LIBRARY Michigan State University MSU LIBRARIES ST RETURNING MATERIALS: Place in book drop to remove this checkout from your record. FINES will be charged if book is returned after the date Stamped below. This tnesis was contributed by wre CO. We. imarp unaer the date indicated by tne uvepertnent stamp, to replace tne original wnich was cestroyved in the fire of itilarch 5, 1916. TEST ON A HOT-BLAST REATING SYSTEX, In the Engineering Laboratory of the MICHIGAN STATE COLLEGE, by C, 4, Knapp, D. M, bennett, 1912, THESIS In the installation of a hot blast heating system, one of the most important factors to take into consideration is the amount of air to se delivered per unit of tire, or the velocity of the air, It is customary to take the manufacturers rating of the fan to be used, with consideration for the losses due to friction in the conductor pipes, neglecting any losses that might occur due to friction of the coils in the heater, Our object in performing this test has been to determine to what extent these losses due to the heater coils will affect the rated output or velocity of air delivered by the system, and, incidentally, obtaih other data on the performance of a system of this type. DESCRIPTION OF SYSTEX. The complete system consists of five sections of four row coils, the long coils being 3'6" in lenght, and the short coils 3'3" in length. The pipe used in the coils is one inch pipe, The dimensions of the coils correspond to the standard No, 412 a type sections as manufactured by the Massachusett's Fan Co. There are twelve pipes in each row, with a spacing of 2,75 inches ceriter to center, The fan is a No, 60 steel plate made by Tne american Blower Co, A 10 H.P. motor vas used to drive the fan. The speed was varied by changing the pulleys on the fan shaft, The discharge vive of the fan is 25 inches in diameter, PH4ARDDH Six runs were made; the firt with all five sections in the heater, the seccnd with four sections, and so on, removing a section before each run, the last being run with all sections removed, Each run consisted of four tests, each at a different fan speed. The length of tests was 1 1/2 to 2 hours each. The velocity of the discharge air was measured in the outlet pipe with a Pitot tube connected to a differential manometer, filled with a special solution, which rend directly in inches of water, She mean velocity was obtained by raking manometer with the Pitot tube inserted midway between the circunferences of imaginary concentric circles which diveded tne discharge pipe into small areas in the cross-section, as shown by blue- print, The averrge velocity of the air passing thru eacn small area of the cross-section wes then obtained fron the application of tne average manometer reading of the area in the formula for reducing tne av, reading to velocity in feet per sec, The sun of 271 these averare velocities multiplied by the area in which the velocity was measured was then divided by the whole area of the cross-section anc the mean velocity of the discharge air was the quotient thus obtained, Having obtained the mean velocity the volune of air passing thru the outlet was obtained by multiplying the mean velocity be the cross sectiorel area of the discharge pipe. All velocities an volumes wei. corrected for a standard temnerature and pressure of 70 decrees Fahr, and 29,92 In, of mercury. All curves plotted are based on tne corrected velocities and volumes, The pressure loss due to the coils in tne heater was measured by means of a manometer attached to a series of 3/38" pipe so as to give the averaze drop, as shown in © blue print nerewith, The condensation from each coil was colledted in large tanks anc weisned at the end of each test. Temperatures were taken of the air, as it entered, in the duct out of doors, and in the outletnine where tne Pitot tube readings were taken, he room temperature was also taxen at the same time, Barometer readings were recorded, also R.P.... of motor and fan, and input of motor, Tne steam xressure in the heater was maintained at 5 Lbs, guace, The thermometers and eteam cuages were calibrated at the bezslaining of the test, and all thermometer readings were corrected from calibration curves, A stea7 separator wos placed in tie main above tie “eater, and the quality of the stean used meastired with a separating calorimeter, The manner of computin,; the velocities by both tne Pitot tupe metnod and the condersietion metnod ere shown vAerewtt:: for Test A-d, - ; PITOT TUCE NETHOD OF MEASURING VELOCITIZS, Referring to tabulated data sheet of test A-1, the Av. nh-1L. and the av, of Of manometer readings No, 12 was taken as > 7, 9 readings Wo, 1 and No, 11, 2 and 10, 3 and 9, etc. were taken as h-2, h-5, etc, No, 6 was taken as h-7, This arranzenent was necessary as the Pitot tube could not be brousht closer than 3" on one side of tne outlet on account of its construction, These reaci os roduced to velocity in ft. per see. correspond to v-1, v-2, etc. on blue print B, The formula for reducinas the uanometer readinzs to velocity readings is V=V 2¢h —~> ade «. es a|o oF wnere h equals av, velocity head in inches of water D equals density of water at room temp, dent-Gos, d equals density of air at outlet temn, Kent-So4, TEST NO, Aci, RESULTS, D = 62,14 d= ,co711i9 V = 2,3146V h x 62.44 = 70.4V h_ 067119 vel = 70.4 V 455 = «7,4 ft. per sec, a-1 = 1,004 sq. ft. yvy-2 = 79, 4 J_l51L0 = 51.1 rT " '" a-2 = 2.629 iT) TT} v-3 = 70.4 V 6504 = 50.0 tt ! " a-3 — ,054 " " v-4 = 70.4 V-.509 = 50.2 ". " " a-4= (430 +" " ve5 = 70.4 V 5438 = 52,0 =" " " a-5 = (3054 " " v-S = 70.4 V (556 = 52,5 " " " a-6 = ,i3i " " v-7 = 7 Vo .000 = 52,2 +" " " a-7 = ,¢054 " " ari x v-l = 47,602 aol X vr2 = 42, SO a-S3 x v-3 = 32,7209 aA-t X vert = 24,9032 a-O X¥ vro = 15,870 a-> X v75 = 6,870 a-7 x v-7 = 282 169.752 49,7 ft. per sec, Average velocity thru outlet = 169,752 5.400 ’ ' Cross sectional area of outlet = 5,409 sq. ft. TOTAL OR IMPACT PRESS. eee ee Pe , STATIC PRESS. —al Aaiainn Roar ' i ' ' ! ! FINE HOLES % SHOWING METHOD OF DIVIDING CROS6~SECT/ONAL AREA OF DISCHARGE PIPE To OFTERMINE Av. VELocITY OF AIR Velocity head read for mid-point of concentric circles each 2" wide and also in centre of small inner cirele (“in diam. wy 0 ae z | % mye Ee Ny ta ify vod | I rie i IE a ty Hie (yt PERFORATED PIPE ° J 4 { | cOoILs my yy Way r tens - o> ee oe ae we | 5 y | . Z 1 } } HN hee | | )| 1 wall ! I DRAFT GUAGE rh ied Ht! ty (1 Hue tet ay 4 i! jit tit yet wi s! i! jul fy Wt 1 : f eet tt! s |*2 |*3 | “4 | *5 | IDE VIEW METHOD OF MEASURING (<) PRESSVRE DROP THRU COILS — CONDENSATION METHOD, TEST A-i, Atmospheric pres: ure = 14,12 Lbs. per sq. in. Absolute steam pressure = 19,12 Lbs. per sq. in. Quality of steam (see formula) = 93,50,. Later* reat of steam at 19,12 Lis. per sq. in, = Gol b,T.U. Latent heat of steam as used = &06 §.5.7. Temperature of steam used, Heat available per Lb. of stean = 896 # (225,6 - 212/) = 9°9.5 B.T Total condensation per hr, = 592,18 Lbs, Total heat given up by steam = 592,18 x $C9.6 = 5563647 5,7T.U. “9 Totalheat given up by steam = 8,977 3,7.U. per min, Temperature rise of air = (108.5 - 37,3) = 71,2 degrees. Pounds of air passing thru heater per min, = 59077 =052 Lbs 15, Vol, of 1 Lb, of air at 108,5 degrees = 14.4 sq. ft. 14, Volume of air passing over heater = 552.x 14.4 = 7050 cu. ft. min 15, Area of outlet pipe = 3,409 cu, ft. 15, rree area thru heater = 0.47 sq. ft. 17, Vel city trnru outlet =__7S20= 2242 ft. per inin, 13, Velocity thru heater = 7350 = 1402 ft. per min. D.%7 Spa V 3(P - Pa). “ormula for quality of steam q = 42 Pa ~APa V"S(P - Pay) © W +2 Pa A = Area of orifice in sa. in, Pa = Absolute pressure of atmosphere, P W fl Absolute stéeam pressure, Welgnt of separated water in Lbs. per second. PERFOR VANCE CuRVnSs., Curve sneet A snows the average friction loss in inches of water for different deptns of sections, with fan delicering air at different velocities (in ft. per min, obtained from the condensation metnod), The cur 2 was plotted from the data in Table A, Curve sheet Awi shows the curves from sheet 4 plotted logarithmically, The abscissae represent velo ity in ft. per .wtn. stabting at 1 on the sheet, for values of 100c , 1100, 1200 etc. with the corresponding pressure losses in Iinch.s of water as ordinates of the curves (41 representing a pressure loss of .1", 2 represe .ts .2" etc.). Curve i-1 is for a depth of one section, 2-2 for a depth of 2 sections ete, The points for curves 1-121 2-2 and 5-5 do not give a curve with an exact slonve for which the exponent n = 2 in the equation y = Bx", but since curves 5-5 and 4-4 do, and since curves i-l and 2-2 give a greater slope and curve 5-° gives a lesser slope than onf for which n= 2, this value was taken as the average for all the curves, For an explanation of logarithmbc curves see Kent 8th edition pg. 85, Curve sheet B snows the average friction loss in in:hesof w.ter for different depths of sections, for different fan speeds, wiese curves are plotted from data in table A, Curve sheet C shows the average friction losses for different depths vos sections for the same fan speed, This curve is plotted from values taken from curves on curve sheet B, Curve sheet D shows the velocities in ft. per min. produced for different depths of sections, by different fan speeds, The velocity is that thri t!.e free areain heater, as measured by Pitot tube method. The points for curve are taken from t°ble a, Curve sheet E shows the condensation ner sq. ft. per hr, for varicus section deptns for different velocities of air in ft. per min thru the heater, as calculated by the dondensation metnod, Curve sheet F shovs tne different velocities produced for different consunptions of power, From table A, Curve sheet G shows the power necessary to drive the fan at vablous speeds with five sections in the heater, he depth of sections does not alter the power required at low speeds, and only very slightly at higher speeds, so the curve shown may be assumed as that for any devth of sections for Speeds shown, These curves show, in general, that for a constant fan speed tie pressure loss varies approximately as the depth of sections, and the square of the velocity, (curve A) and with tre fan speed in a ratio of 3:2, (@urve B/, calculations base on the concensation method of measuring velccity. The relative velocity loss is found to vary directly both as the fan spneett and as tie depth of sections, (Curve sheet D). Curve sheet E is probably only approximately correct, owing to trouble in collecting condensation, However it shows that tne condensation ner sa, ft. per hour increase@ at a :zuch mape rapid rate for five sections as the velocity increases, than for @ lesser deoth of sections, or in other words the condensation per sq. ft. increases more rapidly the greater the deptn of sections, We find that taking all friction losses intc ccnsideration the power input increases gradually in a uniform manner, up to a fan speed of about 500 R.P.iil. and a delivery of about 1ooc ft. of air per min, after which the input increases ata rapid rate, A glance at the curves will give quite complete information as to the performance of the s;stem, For instance, taking the sheets in order, if we desire to know the performance of the system, wrder the standard conditions .calculated, fora depth of five sections and a fan speed of 5CO R. Pou. we find the pressure @oss is ,36 inches of water, the velocity of the air thru the heater is 755 ft. ner min, (Condensation Nethod) or 1125 ft, per min, (Bitot tube method), The condensation per hour is 1,57 Lbs. per sq. ft, of heating surface, and it takes 5,9 horse power to drive the fan, GENERAL DISCUSSICHN OF RESUSTS OBTAINZND, we used the condensation method results for obtainirs the velocity of the air tnru the he:ter, because this metnod os Supposed to be more accurate than the Pitot tube metnod, The velocity heads in this latter method should be multiplied by a coefficient to cbtain the correct velccity “reads, and thes coefficient is difficult, if not impossible, to obtain accurately. The system we used was not provéded with air valves on the inlet side of the coild, so tre results, in all probabioity, are affected by the coils beconing air-bound towards the latter part of eacn test, We let tne steam blow thru the coils before we began ecch test, until we judged all the air was expelled, but during the gest the air, coming over in the steam had no means for escape, This air settled in the botton manifold and extended some distance up the pipves, air being heavier tnan stean, In our tests we kept the coils as free from air as possible, yet we believ: the small amount of condensation collected in the first two tests of runs C & D was due to air-bincirg. We con easily imagine the affect of this air-bindirng, and its consequent reduction of effective heating surface, in commercial installations wrere no attention is paid to the coils whatever, Tue results of the condensation me’ od mist be also affected by the radiation of heat from the sheet (‘ron casings of the heater and fan housing, and air leakage thru the casing, We could not detcrmine nor estivate tlhese losses, so we irade no allowance for ghem, There may, also, be some error from the evaporation of the collected condensation in the tanxs during the test. CONCLUSIONS, we have found that tne fan runs most efficiently at a speed of about 5¢tC R.P.Ui. and consuming abecut 3,5 HYP, and deliverins air ata velocity of acco ft. ner min, These conclusi are drawn from curve sheet 63 which takes into consideration all friction losses, From curve sneet A, we find that the pressure Lose due to pre coils varies directly gs toe rimber of sections and ppreximatcly as the scuare cf tre air velocity, Ke nminber of coils increasc, tre pressure drop comes to vary alunos dircctly as the velocity. Th- velocity referred to is the velo thru the heater, Curve srect D shows that tre velocity dron caused by t friction oF **c¢ coils, varies directly as the number of secticns and directly as the fan sneed, Public buildings require air furnished at a velocity os about 12¢0¢ ft. ner minite, Referring to table C, we finde that the air scunnlied wren the entire five sections are in tve heater is 227 lese than when the coils are all renoved, Now, since tre preceure locs varies Cirectly as the number of cections in the eater, and approximately as the square of the air velocity tru the hea iter, we are able to derive a formula fron the curves on curve sheet a-l, 2 p = inv P.e@ general equation for the curves 3 (ne ¢ form; Log y = Log BE *# hog x, in weTon ) or in looarithmni oF 3S represents intercent with the vertical axis, and “nt tre slope, These curves @re Shown oa curve sheet acd, aad we Pind t “ey are all straig).t lines from witen we obtain: ct 5 1 = 2 DS ,CCCoST TAs gre value of 5 is an aversve value Por one fPoir row section and is found to vary @s the muiber of cectiois, Substitatics in the orig hs wal formmla we obtcin: . ye {CoCo lCoCoLSnve, p = pressure Loss in ine’res of water, Yeowmiiber of seetions, ~ = air velocity thru henter in ft, ver «in, If it is ersired to find "oy" in ounces per sq. inch the forwulea becomes: ANA AAARA IAA Oo = 0020090 356nv" in the Neatings and Ventilating Wagazine CQ ww : Y ° Bad, Shealy, for Nov, dvli, obtalis the followice form ila for a two row section: AN ARAKRAWN p= ,O720Ct2av", p = ounces per sq. in. The syste: upo. wiich his tests were rin consisted of two row sections 2 ft, high and 35 ft. wide, and the fan used was z¥ iaciues in dlameter, uakiils it rather dlfficult to co.rpnare resilta, fpol. ve ressilts obtabicd ta these tects, we ore Lead to stallation of a neating cysten of touis to sive exmtire citisfaction,. tre friction O a rr) 3 loss due to tie ils must be ec.leuluted e:id licwed for, TESTS OF 5 No, 112 Hot Blast Coils. MICHIGAN STATE COLLEGE, TEST No, A-i, BAST LANSING, MICH, LENGTH OF PIPES 3'6" & 3'3", DATE 4-£8-12, TOTAL HEATING SURFACE 277.5 sq. ft. Fol 4:25 P.M. to 3:25 PVM, FREE AREA TIRU HEATER 5.47 " 0 Time 1;25 1:55 2:25 2:55 3:25 Ax, Barometer 28,72 28,72 28,74 88,75 28,75 23,75 oteam pressure in heater © Lbs, Temp. of steam in heater 826 Temp. of entering aér 53,2 38,5 37 37 37 37.3 Temp, of leaving air 11¢ 169.5 $07.5 £€°97.5 $07.5 18,5 Temp. rise 71,2 Temp, test room 89.1 R.P.:*. of fan 764 766 770 T74 787.79 w.P.if, of motor 772 775 778 778 775.75 Friction loss thru heater 79 .78 9 80 ~8S0 C3 Calorimeter readirgs .072 Lbs. in 25' ,055 in 20', MANOMETER READINGS, READINGS (In. of water,) 1, 2495 465 et05 2, et0O0 ~t05 465 on 2400 430 2450 4, 2009 2OUO 005 5, 040 2000 2040 5. 2000 000 000 7. .o75 ~o7d ~otod 8, 2090 090 .o90 om ~O10 ~Oo10 ~610 10, 2625 2025 2020 11, 2000 2000 2065 12, 2490 0450 2495 No, of section, 3 Condensation in Lbs, per hr, 1.2. 062.) COt, Oe. 4,., Dea 1 149.5 £29,143 115.3 103.6 64,3 S921 per sq, ft. per hr, 2,14 Quality of stex: .93,3% o,i.U. of steam used 909.6 Wt. of cu. ft. of air in blast .067419 Lbs, Velocity of air (ft. per min.) from Man. readings 2985' Outlet vin Volume -f air (cu, ft. per Nin f& " " 104734! " ml Equivalent velocity of air at 702. & 29,92 He, 2675' iree area volume under above conditions 9125' " " Velocity thru heater from condensations 1409 " " Velocity thru heater from concensation TESTS OF 5 No, 116 Hot Slast Coils, MICHIGAN STATE COLLEGE, TEST No, A-2, EAST LaNSING, MICH, A LENGTH OF PIPES 3'6" & 3'3" DALE 4-19-12, TOTALHEEATENG SURFACE 977.5 Sq. ft. FROM 1:40 BY. O30 FREE AREA TRI HEATER 5,47 " " Time 24C¢ 2:10 2:4C 33 5:40 carometer 45 20,42 2y.,4e Bd dt 2y,ide Steam pressure in heater Temp. of stean in heater Temp. of entering air 51,5 91,0 o1,2 oC 0 Temp, of leaving air 118 117.5 118 117,5 Temp. rise Temp, test room: R.P.il, of fan 560 552 508 5350 R.P.ii, of motor SOO acc 6C36 _ooS Friction loss thru heater 0474 2482 48 248 Calorimeter readings .C92 Lbs, in 20!'' ,09 Los. in 001 "1 " 201 .o° " MANOMETER READINGS, READINGS. (In. of waterd 1. ~125 ~150 .125 2. .20o e2td ~2309 o. 2209 ~2td 2235 4, 0200 255 0200 5. 2200 275 2200 6, 22795 5230 2275 7. ~200 2200 ~280 8, ~29C 2200 298 Oo, 2005 ~oL0 2205 ic, ~oLd eOL5 ~510 11, ~285 °eR0 . 265 12, 0200 22 -C 2250 . No. of sections. Condensation in Lbs, per hr. £09,12 94,¢ 36,45 59, 42,50 per sq. ft. per kr, Quality of steam 89,7% B.T.U. of steam used °5C,7 wt, of cu, ft, of air in blast ,0Q6673 Lbs Velocity of air (cu, ft. per min.) from Man, readings 2230 Volume of air £cu, ft, per min.) B R 5 629 Equivakenht velocity of air at 70 FP & 29,92 He. 1986 volume under above conditions 6775 1460 TUOSTS OF 5 No, 1122 Hot Blast TEST No, Avs, t mW t 1 3°6 & 3°35", LENGTH OF PIPES aT~n tv TOTAL HEAT FREE ARZA THRU HUEATER 5,47 Time sar-meter oteam pressure in heater Temp.of steam in heater ve 29.14 Lea "7 SC SURFACE 277,5 Sq. ft. "! ry tin: i) Lections, Ml Ci IG AN Kast Lansi DATE FROM 73:50 BLM. TO 9:50 be CN 8 29.1 OO 4 OTATI oy -43, 9 29 COLLEGE ich, AV 29, war oO as) Pp ba ' e-'*e@ 15 5 Les. 26 Temp. of entering air 423 39,2 39,2 40.0 40.0 SO ,9e Temp, of leaving air 120 119,7 117.0 114.5 115.0 117,40 Temp. rise 74,00 Temp. test room 86.09 a.P.-t, of fam 448 457 456 45 458 goers R.Pwil, of motor 8C3 838 848 S41 84C 834, Friction loss thru heater 2000 eot2 044 ~0t8 . 44 306 Calorimeter readings (117 Lbs. in 21' .cSO Lbs, in 48%. 114 Lbs, in 25' ,O05 Lbs, in 2c'. MANOMETOR ROADIMNGS, RUADINGS (In. of water) 1, ~145 ~150 .2OO ~L5C Se 145 ~L50 2200 ~L5C O. 2200 215° 2150 2 20C 4, ~167 e155 ence 2250 OD. . ~L70 27S ~L7O .17¢ cS, ~180 ~ice iv? ence 7. .185 pasre 2LSO ~LLS 8, ,190 2acd ea 2105 G, .£95 LCC 2207 ~LCOd 1c. 2200 ~20° 2200 .aCc ii, L170 ~170 227 L770 12, ~142> etteo id LO NO, Of section, 1 . , 4 c otal Condensation in Lks.per co. in. per hr .ef,4 72.9.50.8 524.5 12.5 342.5 i ner ca. ft. ner hr, 4.1 quality of Steam Cf,77 E.T.U, of steam used 857. “wt, of cu, ft, of air in blast ,8072 tel- seity 2 1. Aft. per atin.) fron Man. readings vo Outlet pic Yolune of air (cu, ft, ser mia.) " " o75o =f " Equivaleat velocity of air at 7O 2, & 20,52" Ne. 47 Pree area " voluwie under above conditions So " " Velocity tiru heater fro... coidens. tion ~ " " PLOTS Ci 2g Hot Blast Neater Secrtons, MIQilsan STALH COLLEGE, Tzil No, acs, EAcl LANC TAG, 2108, LENGT.: OF PIPES 2's" & 3'3", DATE i-igv-12, TOTAL HEATING SURFACE 277.5 $q. ft, Facil derocd BLg. TO ad:co Pu, FREE AREA THRU HEATIR 3,42 " " -ime 20:CC 49:30 42:00 11:30 Av. Barometer 29,16 20,45 20,16 29,15 239,15 w~tean pressure in heater o,o0c Lbs. Temp. of stean in heater \ 2326,C0 leap, of entertngs air 5356.50 35,50 35,50 36.,C2 GS,10 remp, of leaving air 4148.00 445,00 1215,CC 116,Cc 145,70 Temp. rise 77,60 Texzp., test roon 66,ce0 RP au, of fan 553.CO 352,00 355.00 353,00 553.00 R,.P.u,. Of motor SS7,0C GO7.Co COU.0C 654,00 655.75 rriction loss thru heater 2252 e222 woe eonn ona Calorimeter readings 6115 Lbs. in 22' .365 Les, in ii! . 17 hee 1? 26 . 5 ' . mANOMETER READINGS, RESDI IGS ZIn, of water) 1. 07 2c oul 26 CT ae .c7 Se 207 207 2o7 4, .02 Ca 20 5D, 28 ~CB85 erere O. ecco C35 2Ccd 7 ~C&d 200 C9 S, .Co eCLO 2CLO C. eel e200 2t0d ic, 2100 ~LTC 2Lte a1, ~Co5 20d 209d 12, 2075 ~c0o 2coS5 No, of cectbon, | 1, 2, oO, +, So, Tota Concensation in Lbs, per or, 73,27 2,00 [09,45 48,99 42,245 280,65 " per sq. ft. per hr, 1.2 Guality of steam 68,673 ".35.7. of steam used 852 at, of air in blast ser cu, ft, .O037¢6 Velocity of air (cu, ft. ver min. from Man reading S iisc outlet Volume of air(cu, ft. per min.) " " $025 " Equivalent velocity of air at 70 F. & 29,92" He. O61 free area volune under aoove conditions Velocity threu heater from concenvation, 5619 947 Co to TESTS OF ¢ Hot Blast Neating Sections, MICHIGAN STATE COLLEGL, TEST No. B-i, bast LANSING, MICH, LENGTH OF PIPES 3'S" & 3'3", DATE 4-25-12 TOTAL HEATING SURFACE 222 5q. ft. PROM ©:15 4,.:, TO 14:15 ay FRE AREA THRU HEATER 5,47" " Time 0315 9345 10:15 10:45 41:15 av. Barometer 29.47 29.423 29.42 29.82 20.42 29.42 Steain pressure in heater 5 Lbs. Temp. of steam in heater 2O.UL Temp, of entering air 57.0C 58.25 60.00 50,00 SO0,0L 57,U¢e Teup, of leaving air 195.00 105,00 106,20 105,00 105,00 102,00 Temp. rise 44.70 Temp, test room 77.Ceo Ree.m. Of fan 738,CO0 73 :,0C 705,00 764.C00.750.0C 755,Ce Ree... Of motor 752.00 773.00 7714.00 772.00 773,00 758,00 Friction loss thri heater .6 205 200 .62 20k .o74 Calorimeter readings, 14 Lbs. in 16' 413 Lbs, in 20! 16 " 20' = .cd5 "45! Manometer readings. Readinss (In. of water) i, 2455 2 rOO 2 2485 etOO0 Oe 200d .OCOD 4, 20ae 2050 D. ~080 .080 6. 2600 ~600 7. .62 ~O25 &, 2690 2050 9, ~67C 679 10. 2615 .O15 ii, 2oCd 505 12, 2OCd 2005 No, of section, 1, 2. om 4, Total Condensation in Lbs. per hr, 149,75 129,00 110.25 106,0C 497.00 per sq. ft. per hr, 2,wt Quality of steam 85,05 3.T.U. of steam used 81406 wt, of cu, ft. of air in blast .05937 Velocity of air (ft. per min.X from Man, readings 5100 Outlet Volume of air (cu, ft. per min.) " " 1056 Equivalent velocity of air at 70 F, & 29,92" He. 1766 sree ® volume under above conditions 919 , 4515 Velocity thru heater from condensation TESTS Or 4 Hot BLast Neaténg Sevtions, WICHIGAN STATE COLLEGE, Test No, obe2, BEAST LANSIvGa, “ICH, LENGTH OF PIPES, B'6" & 3'3", DATE 4-25-12, TOTAL HEATING SURFACE 2252 sq. ft. PROM 22:45 OPN. TO 2:45 P.t, TREE AREA TRU HEATER 5,47" " Time 12:45 £545 1:45 2:15 Av. Barometer 29.40 29.40 29,37 29,36 29,38 Steam pressure in heater 9,cO Lbs. Temp. of steam in heater 826,90 Temp.of enterins air 65,20 83,60 65,00 64,60 635,50 Temp, of leaving air 116,00 2115.60 116,C0 115.80 Temp, of rise 49,70 Teinp. test room 81,79 R.Pv.if. of fan 570,00 573.00 570,00 571,00 571,00 R,Pwi:. OF motor 822,00 &@27,.CC 622,00 822.00 825,.C¢ Friction loss thru heater ~te2 ~ord 042 040 200d Calorimeter readings 15 Lbs, in 26' ,141 Lbs, in 20' 6002 " “" 17' MANOMETER READINGS, READINGS (In. of water) 1. .260 2260 2, ~200 ~260 O. 270 .270 4, 2280 .230 3. 2000 2000 6, ~oL5 ,o8 7. ~020 2020 3, 2500 2000 o, 2045 , 045 10, 2000 .O00 11, eO20 »oLC 12, 2200 6200 No, of section 1, 2, 3 4, Total Condensation in Lbs, per hr, 130.2 108.5 86.5 73.7 404.7 " oer sq. ft. per hr, 1,83 Quality of steam 87.63 23,.T.U. of stean used 842 wth, of cu, ft. of air in blast ,O671 Velocity of air (ft. per min.) from Man readings 2350 Outlet Pipe Volume of air (cu. ft. per min.) " " " 7850 " " Equivalent velocity of air .t 70 F, & 29,92" He, 2090 sree Area " volume under above conditions 7125 2M ; 2132 Velocity thru heater fron condensstion Tests 6f 4 Hot Blast Heating Sections, Test No, L-3, Length of Pipes 3'6" & Total Heating Surface Free Area Tnru Heater 5,47" " Time 2:02 3392 Barometer 29,35 29,34 Steam pressure in heater Temp. of steam in heater Temp, of entering air C4 65 Temp, of leaving air 120.5 12¢ Temp, rise Temp. of test room R.P.:!. of fan 443 453 R.P.it, of motor 382 BiC Michigan State Collere, Hast Lansing, ‘ich. =~? ow Date #¢+ O322 29.54 2 64 3 5742 Friction loss thru heater 2276 2200 e285 woe Calorimeter readings ,12 Lbs, in 24', ,13 Lbs wanoneter readings, Reedinzs In. of water) 1, ~150 2155 4455 2, ~L0¢ 2405 2L55 oO. 2155 2160 2100 4, 2165 ei 7S oi D . ei7O ~LEO eicd S, ~18¢ Lcd 2405 7. 2190 e205 eno 8, 2105 ec’ eal’ 9, esl soo ~2c0 19, ewe oa eon Li, ~180 2499 2220 12, esoQo ehOO aero No, of eection, 1, 2, 3. 4, Condensation in Lbs. ner hr, 115.3 83,5 2.4 61,3 ner Sq.ft per hr, Quality of steam €2.47 3,T.U, of steax vised 542 ut, of cui, ft. of air in blast ,.65747 Velocity of air (ft. per Min.) from Man, readinzs 41740 Volume of air @u, ft. ser Min M " " 5040 Fquivalent velocity of air at 72 F, & 20,02" Ile, 27S " volume undsp avove condrtitoas 5500 Velocity thru heater froa condesasatioa TOs To 4:C2 Fil, Av, Cor. 29,54 5,cc0 Lbs, 826.5 63.4 116,2 Oo,4 Total COT .O q, 58 O. m~m., 4 -~ ¢ Vutlet Pines, i! i bree apca, TT TT] 1p "7 a IT) 7 cee vA 73 qt OUT A 00 UTTAR Ee kM Ve TP ry wR Ne ey To OPS Pucts Of ¢ Nou olastu PEAULLM OO Vw COoLolls, whi dee Odea COLL L, Y TP faye semesry ere r’ as her tg s-bivine TZSB WO, B-4, mA ENGTIT OY PIOES PS" & otc PATH i-Lo-i2, POTAL ULATING SUAPACE 222 ea, fu, Bic. 3sOt Pou, TO o3:co Pll PALE AleA TAU NEATER 5.47 eq. ft. ii.ne 2:02 2:52 BSc G:2e av, @or, barometer 25.6 23,70 23,78 23.70 75,70 steaa preossure in heater 5 Los. remo, oIfsteaanrin heraér Bat Gg temp, of entering air 73 72 71.5 onne 70.6 Te-p, of leaving alr 127.5 126.3 426.5 126 425,85 Leap. rise 92,6 Tenp.,of testroon, 61,8 RiP,..., of Lan 336 go O42 530 338 R.P.il. of motor Sis G23 B24 OS enue Npiction lLlossthrpu heater ~tc3 ~awt 2105 wee are, Calortiueteorp reaciacs .ct5 Lbs, in 20' .c75 Lbs. in 21", NANOMETER READINGS, RBADTNGS, (IN, of water) 1, 2CS oo? 2 ae 00S ae 2c Oo. 2co ae .o? 4, eCCo e075 eC7D oD. ev? eCSO ecced oO. ~Lo? COG 205d 7. ~itd Rests 205d 3, ~ii5 125 wold Co. eLiic ~Lc > ~LCC 1c. etid ~Loe 2cd5 1i, eCcs ~LC2D ecve 1°, 2Cod 795 .O70 NO. of sections 1, ° Oe +t. Total Condensation in Lbs, per hr, 162.3 73.5 55.3 44,3 275.4 " 1,24 per aq. ft per hr, wuality of stea: 93,153 O.T.U. of stea. used 89 at, of cu, ft, of air in blast .065 Velocity of air (ft. per min.) from Man, readings 1222 Outlet Pine, Voluze of air (cu. ft. per min.) " " " 4170 B i Equivalent velocity of air at 70 F, & 29,928 He, 1570 Free area volume under above conditions 3652 £& fs Velocity thru heater from condensation so02—COo"" " TESTS OF 3 Hot Blast Heating Sections, MICHIGAN STATE COLLEGE, TEST WO. Ce, EAST LANSING, MICH. EANGTH OF PIPES 3'6" & 3'3", DATE 4-29-12, TOTAL HEATING SU7FACE 166.5 Sq. ft. FROM 3:43 P.M. TO 5:13 PLN, FREE AREA THRU HEATER 5,47 " " Tine 3:43 4:13 43:43 5:13 Av. Cor Barometer 22,87 28,58 238.68 28,68 28,66 Steam pressure in heater 5 Lbs. Temp, of steam in heater 226 Temp, of entering air 49,3 48,5 £8 43 47,7 Temp, Of leaving air 83 85 6D 85 384.6 Temp. rise 36.9 Te:;ap. of test roon 79 RP, of fan 7356 780 731 780 774 R,P.uw., Of motor 766 787 79C 789 733 Friction loss thru heater eto 240 24d ~47 2408 Calorimeter readings 152 Lbs. in 29' ,9i3 Lbs, in 8'. .085 Lbs, in 20' NANOMETER READINGS READINGS ZIN. of water) 1, 2435 2tO5 etrCO 2. 0455 2455 2t35 3 et0C 2t55 6445 4, 2tES 200d 2230 SD. e020 2025 20230 CG, 55C 2O00 2o:8 7. 2O75 2o9e 2O79d 5. ~50C 2620 ~600 9, 2685 2045 2050 10, oo 2660 2065 11, ~OLe ~615 2605 12, 2oLd ~oLd 2oC? Np. of section, 1, 2, on Total Condensation in Lbs, per hr, 99,7 130.3 124.8 5,904.8 " per sq. ft. per hr, 2,14 Quality of steam 63.753 8.T.U. of steam used 852 wb. of cu, Ft, of air in blast .o6705 Velocity of air (ft. per min.) from Man, readines 5055 PButlet Pipe " Volume of air (cu, ft. per Min.) & " " 10410 Equivalent velocity of air at 70 F & 29,6 -"5, 1793 Free sArea volume under above conditinis 662¢ " " Velocity tnru heater from condensution 14538 TESTS OF TEST NO, C=2, -_> Th LENGTH OF PIPES 3'6S" & Condensation in Lbs, Quality of steam per per Sq. ft. 91.47% wt, of cu, fr. of air in Velocity of air (ft. per Volume of air (cu. ft. per Min.) Equivalent velocity of air at 70 F, volume under above conditions hr, 5 Hov Jlast Heating Cections, MICHIGAN STATE CCLLEGE, EASE LANSING, MICH, DATE 4-50-12, on o 190.8 1°9,1 81,5 ver hr, B.T.U. blast Min.) from Man, readings ope steam used 8783 O608 . i" " & 29,92" He, Velocity thru heater from condensation TOTAL HEATING SURFACE 165,95 Cq. ft. PROM 2:90 P.M, TO 2:ce0 F... FREE AREA TRU HEATER 5,47 " " Tine 13900 1:30 2300 2330 av. Cor, Barometer 29,14 29,14 79,14 29,14 29,14 Steain pressure in heater © Lbs, Temp, of steam in heater 225 Temp, of entering air 62 61 53 63 61.1 Temp. of leaving air Q7 95 97 95 O4 Temp, rise 52.9 Tenp, of test room 84.1 R.P.si, oF fan 910 5938 576 572 557 R.P.u. of motor 813 Bo2 Sis 821 Siz Friction loss tnru heater ~oL5 2208 2005 ool 2250 Calorimeter readings .145 Lbs. in 24' ,f05 Lbs. in 35' .OG6 Lbs. in 33! ~ WMANOMETER READINGS, READINGS ZIn, of water) 1, 2200 2225 ~2900 2. 2200 2205 2200 3. 6250 e200 e2u0 4, e200 240 0200 Oo. 2265 e200 620d 5. .279 e200 ete 7. 2oCeo ele 2290 8, 2old 2oCe 2000 9, eO2o 219 2c 10, e200 2290 ~3CO 11, 250 ev20 2025 12, 2200 2200 2200 No, of section, Total 291.4 i. 2150 7599 2Z2CO00 6327 i4il 75 Outlet Pine. "! Free Area t tt TESTS OF 3S Hot Blast Heating Sections, MICHIGAN STATE COLLEGE, TEST NO, C-3. EAST LANSING, XICH, LENGTH OF PIPES 3'6" & 3'3", DATE 4-30-12, TOTAL HEATING SURFACE 166.5 Sq. ft. FROM 8:55 A.M, TO 10:25 a... FREE AREA THRU HEATER 5.47 " " Time 83:55 9:25 9:55 10:25 Av. Cor, Barometer 29,12 29,14 29,14 29,14 29,14 steam pressure in heater > Lbs, Temp. of steam in heater 226 Temp. of entering air 51 52 55 55,9 52.6 Temp, of leaving air 99 92.5 101 ic1 97.5 Temp. rise 44.9 Temp. of test room 79.1 R.P.M. of fan 439 446 444 441 442 R.P.“. Of motor 614 B29 386 816 816 Frictiom loss thru heater ,.178 ,.17S5 .177 ,172 2155 Calorimeter readings 0155 Lbs, in 22' ,21 Lbs. in 28! cos ff " 17! MANOMETER READINGS, READINGS (In, of water) 1, ~Lo0d 2100 2129 2. ~t50 ~150 ~i25 oO. ~L50 ~130 ~125 4. 240 ~140 2135 Do. ohOO ~150 2145 6, ~ 160 ~t6C ~455 7. ~170 ~170 2165 C. ~ 480 ~175 L170 9, ~185 ~i85 ~L80 10, ~190 ~190 .185 11 075 ~175 L170 1°, ~140 ~140 21355 No, of section 1, 2. 3. Total Condensation in Lbs, per hr, 121 97,7 83.7 02,4 " per sa. ft. per hr, 1.51 Quality of steam 83,57 B.T.U. of steam used 8C2 wt, of cu, ft, of gir in blast ,c693 Velocity cf air (ft. per min.) from Man, readings 1615 Outlet pipe Volume of air (cu. ft,per min.) 8 " 5510 Equivalent velocity of air at 70 F & 20,92" He, 950 Free area " volume under above dondetions scg0. Ci" ; Velocity thru heater fpom condensation 1oi90 " " TeESTS OF 3S Hot Blast Heating Sections. MICHIGAN STatvk COLLrGE, TEST NO& Cr4, EAST LANSING, MICH, LENGTH OF PIPES 3'6" & 3'o" DATE 4-50-12, TOTAL EFATING SURFACE 166.5 sq. ft. FROM 2:45 TO 4:15 PVN, FREE AREA TIERU HEATER 5.47 " " Time 2:45 3:15 3:45 4:15 Av. Cor. Barometer 29.14 29,14 29,14 29,15 29,14 Steam pressure in heater 5 Lbs. Temp. of steam in heater 286 Temp, of entering air 61 62,5 61 60 60.1 Temp. of leaving air 110 108.5 107.5 106 195,5 Temp, rise 45.4 Temp. of test room 90.3 R,P.u, of fan 339 343 548 345 544 R.P... of motor 837 863 838 850 849 Friction loss thru heater ~115 ~118 118 2125 ~1CCS Calorimeter readings ,045 Lbs, in 27' .04 Lbs. in 28', MANOMETER READINGS, READINGS (In, of water) 1. 2077 .c8 2. O77 .c8 oO. .O79 ~O8 4, C8 09 5D .088 ~095 6, ~C95 ~095 7. ~ 100 ~102 8, 2105 ~1C7 9, 2 110 2112 10, 0413 ~115 11, oLc0 .1C5 12, ~C8O ~080 No, of section, 1, Oe Bb, Total Condensation in Lbs. per hr, 105,5 76.7 06.5 258.5 " per sq. ft per hr, 1,3 Quality of steam 95.7% b,.T.U. of steam used 920 Wt. of cu, ft. of air ir blast ,cC684 Velocsicvy of air (ft. per min.X from Man. readings 1285 Outlet Pine Volume of air (cu,ft, per min,) " " " 4460 " " Equivalent velocity of air at 70 F, & 29,92" Hg, 1200 Frée ared tt 1 " volume under above conditions Velocity thru heater from condensation 4090 896 TESTS OF 2 Hot Blast Heating Sections, TESTNO, Del, MICHIGAN STATE COLLEGE, EAST LANSING, MICH, DATE 5-41-12, FROL e320 TO 1:55 Pah. LENGTH OF PIPES 3'6" & 3'3", TOTAL HEATING SURFACE 111 sq. ft. FREE AREA THRU HEATER 5.47 sq. ft. Time 12:25 12:55 1:25 1:55 Av, Cor. Barometer 29.09 29.,.C85 29,08 20,08 19,08 Steam pressure in heater 5 Lbs. Temp. of steam in heateb 226 Temp, of enteri.ig air 51 51.5 51;5 51.5 50,8 Temp. of leaving air 71 71.5 71,8 71.8 70.6 Temp. rise 19.7 Temp, of test room . 71,5 R.P.M. of fan 769 769 759 769 767 R.P.i:. of motor 772 774 777 777 779 Friction loss thru heater O79 old 208 .065 Calcrimeter readings .065 Lbs, in 25' ,@5 Lbs, in 22' MANOMETER READINGS, READINGS (8n, of water) 1. .@60 2450 24350 2. ~460 2450 0430 Oo. «470 2450 0455 4. ~005 475 485 5, 2000 .000 e020 6. ~080 .000 e000 7. .600 2089 ~500 8, 2090 550 ~640 QO. 690 e069 ~6905 10, 705 ~670 O75 ti, =, ,660 .6350 ~630 12, 000 .0o40 ~ 040 No. of section, 1, 2, Total Condensatio.. in Lba, per hr, 104.2 112.2 216.4 " per aq. ft per hr. 1,99 Quality of steam 04% 3.T.U. of stean used 9C4 Wt, of cu, ft, of air in blast .d0728 Velocity of air (ft. per min.) from Man. readings 3015 Outlet pipe Volime of air (cu. ft. per min.) " " " 10280—s"’ " Equivalent velocity of air at 70 F & 29,92" He, 1825 Free area " volune under above conditions e990 _~«—" " Velocity thru heater from concensation 1730 =O" " TESTS OF 2 Hot Blast Heater Sections, “MICHIGAN STATE COLLEGE, TEST NO, D-2, EAST LANSING, MICH. LENGTH OF PIPES 3'6" & 3'3", DATE 5-41-12, TOTAL HEATING SURFACE 111 aq. ft. FROM 2:05 Pvii, TO 3:35 P.... FREE AREA THRU HEATER 5,47 " " Tire . 2:05 2:35 3:05 33:35 Av. Cor, Barometer 29,C8 19,075 19.C7 19.07 20.075 Steam pressure in heater © Les. Temp. of steam in heater Oo Temp, of entering air 52 54 53.5 54 92.4 Temp. of leaving air 72,5 75 75 75,9 73.9 Temp. rise 21.5 Temp, of test room 74.7 R.P.u. of fan 568 568 587 574 574 R.P..., of motor 812 820 825 826 816 Friction loss thru heater 217 eter, 220 .20 .24 Calorimeter readings 0575 Lbs. in 33' 30425 Lbs. in 19'. WANOMETER READINGS, READINGS (In. of water) 1, .208 eco 2285 2270 2, 2258 ~208 ~280 279 O. 0 otd you eo 27C 4. ,25% ~165 .o08 300 5. .282 ~290 .825 315 S. 2OCd ~o00 2000 325 7, .o18 225 ~069 355 8, e000 340 .080 2000 9, 2045 »o00 2090 397 10, 2000 2000 0405 »o95 1i, 2000 e000 .085 ~o70 12, ~285 288 2020 315 No, of section. Condensation in Lbs, per hr, 85,35 &.7 134 " per sq. ft. per hr, 1.65 Wt, of cu, ft, of air in blast ,.07235 Velocity of air (ft. per min,) fron an. readings 2390 Outlet Pipe Volume of air (cu. ft, per min.) 8&8 " siso Ol" Equivalent velocity of air at 70 F & 29,92" Hg, 14iC Free area " volume under above conditions 7860 #2" Velocity thru heeter from condensation 1178 " " TESTS OF 2 Hot Vlast MNeatinge Coils, NICHIGAN STATE COLLEGE, TEST NO, D-s, BAST LANSING, MICH, lo LENGTH OF PIPES 3'G" & 3'3", DATE 5-2-12, TOTAL HEATING SURFACE 111 sq. ft. FROM 8:33 Ait, TO 10;03 Avi, FREE ARCA THRU HEATER 5.47" " Time 8;38 9;Ccé 9;38 10;c8 Av. Cor, Barometer 29,145 29,16 19,18 1°,18 19,18 Steam pressure in heater 5 Lbs, Temp. of steam in heater 226 Temp. of entcring air 64 34 54 S 63.2 Temp. of leaving air 94,2 94.5 04 94,09 92,5 Temp. rise 29,5 Temp. of test room 78.4 R,>.--. of fan 438 444 442 442 441 R.P.::. of motor 818 813 824 B23 819 Friction doss thru heater wid 2123 ~128 ~12 Jil Calorimeter readings .c8 Lbs, in 92' .C25 Lbs, in 136', MANCNETER READINGS, READINGS (In, of water) 1, ~155 24555 155 2. ~155 ~155 2155 om 2160 LEC 2160 4, .17°2 L750 L700 DO. ~LS5 2185 185 So. oL02 195 2105 7. esc ello eol? 8, waceG 2213 .215 oO. -o co eoef elo 1c, 6225 ,2n7 .on 11, ooo ,2a0d ~210 12, .17¢ 2178 ~180 NO. of section. 1, 2, Total Condensation in Lbs. per hr. 117.7 174 Bo. " per sq, ft. per hr, 2a0 Quality of steam ¢€57 3B.T.U. of steai used $14 wt, Of cu, ft, of air in blast ,¢2393 Velacity of air (ft. per min.) from Man, readings L792 Outlet Pire Volune of alr (eu, ft, per min,) " " " 4750 " " Equivalent veloclty of air at 7CF-& 29,92" Mp dC-z0 Free area " volume under above condltiors 5725 " " Velocity thru heater frou condensation 1257 " " THSTeS Or 2 Not Blast Neating Coils, WICUIGAY STATE COLLESE, TST NO, D-4, Reol LANSING, MICH, LENGTH OF PIPES 3'é" & 3'S", DATE 5-2-12, Wrhe AREA TORU UEATIER 553547 2a. Ft. PROD 22:25 Avi, TO 24:34 TOTAL NEALTING SURPACE 441 " " Ti:e 19:26 22:43 21:15 %L::2: Av, Cor, baroaeter 20,28 29,15 ie.lc 19,15 20,16 oteam prescire Lia heater 5 ubs, Ter, of stear in heater en's fenp, of enterincs alr 65 35 S7 37 S36 temp, of leavicgs air 99.5 102 1o2.6 i¢2.6 O9 Teup. rise Og Tend. of test roon 34,5 RP... of fan 349 942 342 343 5-2 R.P.... OF motor B32 834 83-4 G30 634 Friction loss tru heater co 2002 2c .CO EGTaNTs) Colorineter redadivncs ~co45 Lbs, in 22' .635 Lbs, in Gi! (O53 it " 40! MANOMETER RrADbIvSsS, AKADITZS (In, of water) 4; Gove mencre 2O8S woe 20G2 CO2 022 Se eCvo ecOo 0CSD 4, eLCOD 2100 eid De ~119 ~ild acd Oo. ~i15 oid eae 7, 2125 ~120 2115 é, ~i80 .123 2co o. ~1352 22ca ~130 iC, 2125 2200 .130 ii, 2125 2125 eid a2, 2105 ood 2205 nO, Of cection, 1, ne Total Condencation in lbs, per hr, 835 62 Lid " per sa. ft per hr, 1,34 quality of stean 65.43 3B.T.U. of stean used 832 Wt, of cu, ft,of air i. blast ,co94 Velocity of air (ft. per min.) from lian, readings 15376 Cutlet ni Volume of air (cu, ft, per min,) " " " 750 v M oqgiivalent velocity of air at 70 F. & 29,92" He, 737 Free aArea volume under above condcitions Velocity thru heater from condensation +550 748 A... TESTS OF 2 Hot Elast Heating Sections, MICHIGAN STATE COLLEGE, Test No, =-2, EAST LANSING, Mich, LENGTH OF PIPES 3'6" & 3'3", TOTAL HEATING SURFACE 55,9 Sq. ft. TO 4:50 BLY. FREE AREA THRU HEATER 5.47 " " Time 3:2c 3:50 4300 4:6¢ Av, Cor, Barometer 29.16 29,14 29,14 29,135 29,14 otean pressure in heater > Lbs, Temp, of steam in neater 2.26 Temp. of entering air 78 2 72 72 74 Temp. of leaving air C5 C4 85.2 62,5 82 .4 temp, or test room 11.4 R.Pwu. of fan 62.4 R.P,.i. of motor 773 779 775 774 775 Friction loss thru heater 778 784 769 768 754 Calorimneter readings oou0 2208 2200 e200 .224 6035 Lbs, in 22' .815 Lbs. in 1i5'. manometer Readings. neadings, (In. of water) 1, 0450 2OUd 2450 2. 0430 2OCd 0tEO Oe 2o10 2000 0430 4, =525 200 ~oL0 OD. 2065 2Oc? 2000 O. 0620 ~62C .696 7 6 2O7C 2O7C 2520 8, 0700 27d 2685 0, 0739 0045 2710 10. eMC 0770 0745 11, 0745 0150 of0O 12, 2615 2020 ~610 No, of section, 1, Total Condensation in Lbs, per hr, 107.8 167.8 " per sq. ft. per hr, 1.94 Quality of stean 95.6 B.T.U. of steam used 920 Wt, of cu, ft. of air in blast ,.0713 Velocity of air (ft. per min.) from Man readings 3204 Ciitlet pipe Volume of air (cu. ft. ver min,) &f " " 10920 " " Equivalent velocity of air at 70 F & 29,982" Hz, 1895 Free Area " volume under above conditions 1293 " Velocity thru heater fro: condensation 2547 " " TESTS OF 1 Hot Blxst Heating Section, MICHIGAN STATE COLLEGE, TEST NO, E=x2, FAST LanSIaG . ICH, LENGTH OF PIPES 3'G6" & 3'3", DATE 575-42, TOTAL HEATING SURFACE 0,5 Sq, ft, FROM 8:26 TO 93:46 4,.., FREE AREA THRU HEATER 5.47 8&8 " Time 8:16 8:46 9:16 9:46 Av. Cor, Batometer 29,25 29,25 29,24 29,22 29,24 Steam pressure in heater 2 Lbs, Temp. of steam in heater 226 Temp. of entering air 57.5 59 50 6é 59.3 Temp. of leaving air 71.5 73 735.8 76 735.2 Temp, rise 13.9 Temp. of test room 73,8 R,P.:', of fan 544 555 564 550 555 R.P.ii.e Oc motor 795 8CO B02 808 OL Frictio: loss thru heater 2126 ~125 2128 ~127 ~ii15 Colorimeter readings Calorimeter MANOMETER READINGS, READINGS (In, of water) 1, 2258 ~260 255 2. 2258 2262 200 3. 2245 eo" 299 4. e200 239 275 D. 2d 305 298 5, 2900 e020 520 7. e020 eOtd 5335 8, 2000 2085 ~ 000 9, 2060 2o95 580 10, 280 0400 0O0” 11, 2060 2080 060 12, 008d 0020 510 Condensation in j/bs, +3r hr, 109 " per sq.ft. rer “rp, 1,07 Quality of steam 96.8% B.T.U. of steam used wt, of cu, ft. of air in blast .0728 Velocity of air (ft.per min.) from Man readings Volume of air (cu, ft, per min,) " " Equivalent velocity of air at 70 F & 29,72" " volune uider above conditions Velocity thru heater from condensation Her “+e, 8 showed no reading, 950 wood Cutlet Pioes, 75076 170 2340 4279 free area tf " » TESTS Or 2 Hot 3Slast Heating Section, MICHIGAN STATE COLLEG TEST NO, H-3, EAST LANSING, MICH, LENGTH OF riEng ofo" 2 5te", DATE 9-3-12. TPTAL HEATING SURFACE 955.5 Sq. ft. PU 03;52 Ava, TO Lasdg vime 9:52 40:22 40:52 2:'°,22 av. Cor. Sabometer 6G, G2 60,2038 ob, 205 Lu ,i3d 12,19 Stean pressure in heater > Lbs, Temp, of steam in eater oO Tero, “oS enberiiug «air 33.5 37 33 33 Jo.2 eEaDd. OF Leoviag air 3O GO S21 SL 72 Temp, rise Loc Temp. of test room Uo.4 Rye, of fan 220 a0 z52 4.23 £27 RP... of motor 3.03 321 3822 335i 22.) Priection Low: than, Feaeter C55 ecceé ~C8S5 ~C&S ~C305 Caloriieter eoidiags .04 Lbs, in 19! 9+ Lps, in 30' {C4 " i 30 ' MANOMETER READIUGS, READINGS (In, of water) 1, e155 ~i65 ~ 150 oa 2155 2155 ~158 3 2id5 ~1c5 ~iG2 4, 2175 ~1i78 .1i78 D. ~185 2195 2192 6. ~L195 0200 2200 7, 2d ~.15 ~2id oy 2220 2250 ,220 9, 235 e2td 2200 10, ~240 245 0245 41, 0200 248 240 12, 2105 evict 2200 Condensation in lbs, per hr, 81.4 " per Sq. ft, per hr, 1,47 Quality of stean 96.6% B.T.U., of steam used $28 vt, of cu, ft. of air in blast 07175 Velocity of air (ft. per min.) fron Volume of air (cu, ft. per min,) & uan readinss " "! Equivalent velocity of air at 70 F & 29,92" He, volume under above conditions Velocity thru heater from condensation see Outlet Pi 290 " 1100 Free area 6o20.) Co" " 1042 pes. TESTS OF pe Hot Plast Heating Section, NICUIGAN STATE COLLEGH, TEST NO, E-4, EAST LANSING, MICH, LENGTH OF PIPFS 3/5" & Zio", DATE 5-3-12, TOTAL HEATING SURFACE 55,5 Sq, ft. FROM 212:2C Pil, TO 2:50 P.... FREE ARCA THRU NEATER 5,47 " " Time 12:20 12:50 21:20 4:5¢ Av. Cor. Barometer 29.1858 29,17 209,165 29,16 29,17 Steam presszizre in heater 5 Lbs, Temp, of steam in heater 22 Temp. of enterins air 70 71 72. 72 70 Temp, of leavin: cir 83.5 83.2 64 84.8 G2,5 Temp. rise 12,5 Temp. of test room 84.1 R.P.::. of fan 342 345 345 345 S49 R.P.2:, Of motor B55 38 835 537 S34 rricrion loss thru heater C52 cog ~ooRg O52 0085 Calorimeter readings .C45 Lbs, in 20' .B45 Lbs, in 34' .0O5 Lbs, in 16' MANOMETER READINGS, READINGS (In, of water) | 1, e100 eco CoS 2. 20d ~Ccced ~000 3, 22CC 2093 ~cod 4, ~ L105 ~co8 itd © SD, ~it5 ~L07 ~1C8 Oo, ~1i8 ~415 ~218 7. 2128 ~i22 2120 S, 2138 2120 ~150 o, 2145 ~140 ~138 1o, oii5 180 2140 119 e122 eeu ~159 12, ~122 oii? 2115 Condensation @n Lbs, per kr, 72,6 " per sa.ft. per hr, 1,31 Quality of steam 04,57 B.T.,U. of steam used 9C8 Wt, of cu, ft. of air in blast .B7125 Velocity of air (ft. per min,) fron Van readicys 1415 Outlet Pines. VYOlune of air (cu, ft. oer min.) " " " C25 " " bquivalent velccity of air at 70 F & 29,92" Ho. ooh Free area " volume under above conditions: 4°90 7 " Velocity ‘tip. heater from condensation O40 " " Ww TESTS WIDTH HEATING SPFCTICNS REMOVED, sICHIGAN STATE COLLEGE, Tenca ie F-1, PACT Lawl. LENGTH OF PIPiC PhiE S-G-se, a Le 2 ee a4 a EPporete, ear yo Co “ . ye 4 =~ fT: Pan me. f- ar ¢ ney! e wie £ aed € Y Ing ©. ir .- . ty Tr & -eays ; ~_ Po Oe Temp, of leaviess ctr roan rep ) . ro! t oe e - i Le u f I - ~ Cc ~ ‘ae oan e . 4 toa KR . t i ’ F wd “_—— . ~~ A =P 4 e C f Ce ry a oS db ~ ol ¥ ry oe >-- 9 x e- e C 3 - ‘ > & Su f Lrerore ioe CEC e ’ Nee . 7 ‘ \ \ te [ d a - >» 6 e ! t e WO) Oa) 1 @ 00 ©) © e Cs © e e e e e YIOOVYVIOGUNAMH t- - 2 « e e OW we G b&b OO CIAQAONO OO ot, of cu, ft, or air in blast .90725 Velocity of air (ft, per min,) fron Nan readings S524 Outlet pioes Volune of air (cu, ft, per min,) " " " 1136 " Equivalent velocity of air at fg © & 29,92" Hg, 223 Free area volume under above conditions 1ic " TESTS wer le Tzsf NO, Til HEATING SECTIONS REVOVED, MICHIGAN STATE COLLSGL, F-2 EAST LANSING, ICH, DATE 5-3-12, Tine av,Cor, parometer 2c ,1i+ Temp. of entering air 79,9 Temp. of leaving air 72,0 Temn, rise 2.0 Temp, of test roon TO.1 n.P., of fan 447 NR ,Pyit, Of motor 354 MANOMETER READINGS, READINGS £In. of water “vt, OF Velocity of air (ft, per min.) from Man, readings 8508 Outlet Pi Volume of air (xu. ft. per min.) 8 " Equivalent velocity of air at 70 F & 29,92" IIz, 1514 Free area Cu, 1, 2200 2, 225d 3. 225d 4, 2200 Oo. ~oLd Oo, 2200 7. 200° S, ood 0, 0420 Lc. 445 11, 045 12, e000 ft. of air in blast ,07275 " 8550 =O" volume under above conditions 3280. —=Co"" pes t TESTS CF 2 Hot Vlast Heatins Coils MICHIGAN STATE COLLEGE, T2&ST NO, D-3d, BACT LANS , wih, LENGTH OF PIPES 3'G6" & 3'3", DATE 5-2-1°, TOTAL HEATING SURFACE 111 sq. ft. FROM 8:59 Avi, TO 10;08 Ava, FREE ARCA THRU HEATER 5,47 " " Tin 8;38 9;cE 9;38 10;c8 Av. Cor, Barometer 29,145 23,16 19.18 1°,18 10,128 oteam pressure in heater 5 Lbs, Temp. of steam in heater 226 Temp, of entering air S4 3! 54 S& 63,2 Temp. of leaving air 94,2 94.5 94 94,5 92.5 Temp. rise 29,5 Temp, of test room 78.4 R.>.--. of fan 438 441 442 442 441 R.P,... of motor 818 E13 824 3295 819 Friction doss thru heater 1s 2122 128 ,2128 ~119 Calorimeter readings (08 Lbs, in 32' ,025 Los, in id', MANONETER READINGS, REALDINGS (In, of water) 1, ~155 1555 ~155 a. ~155 ~155 2155 O. ap S6re 1c 2152 4, .172 w1L72 179 D. ~LS5 ~185 125 S, 2102 asks 2105 7. ewe elo ene S, wold 2213 221d v 200 222 32 10, 22 122 an 11, 529 240 210 12, .17C¢ 2178 ~180 No. of section, 1, 2, Total Condensation in Lbs. per kr, 117.7 194 22,7 per sq, ft. per hr, 2,32 Quality of steam ¢€57 3.1.0. of stear used $44 wt, Of cu, ft, of air in blast ,¢c903 Velacity of air (ft. per min.) from Nan, readings L702 Outlet Pires Volure of air (cu, ft, ner min.) " " " 475000" " Equivalent veloclty of air at 7CF-& 29,92" 21 C30 Pree areu " volune under above es oni tto cs 3722" " Velocity thru heater frou condensation 1257 =~" " THs Ts OF 2 Not Blast Neating Colls, WICMISAy STATE COLLESE, TST NO, D-4, Paol LANSING, MICH, LENGTIT OF PIPES 3'd" & 3'S", DATE 5-2-1412, WREL ARMA TURD HEATER 53547 Ea. Ft. FRO. 20:13 Avil, TO 12:34 TOTAL HEATING SURFACE Lit " " Ti.ie 40:26 22:45 11:15 aL21:21 Av, Cor, paroneter 22,28 29,15 i0,fc $22,135 29,46 oteam presc.ire La neacear 5 Lbs, Temp, of steam in heat “7 BO Temp. of ecterins alr 65 35 67 S7 66 Temp. of leaving air 99.5 100 1Co.5 400.6 99 Tenap. rise OS Temp. of test rooda 34,5 RP... Of fan 349 $42 342 343 542 R.P..., Of wotor B32 834 834 G36 634 Friction loss tury neater C9 2092 ees Cd 2CG39 Calorimeter reading O15 Lbs, in 22' (055 Lbs, in 3i' , OOD "45! MANOMETRR RPPADINGS, READIUGS (In, of water) 4; Core 200° LOCO ie ~oS2 C928 wove Oe ecvo 22d ~CoD ck, ~LOD ~LOOD ence oo .110 ~L10 eco oO, ~ahd eth ~sbe 7, 2125 212d ~i15 a, ~L30 2128 .co 9. 2152 ~ao2 2130 ic, 212d 2435 ~18e 1i, 2125 2125 2425 12, 28 wt 6405 Lo, Of cection, 1, 2. Total Condencation in lbs, ver hr, B35 62 115 " per sq, ft per hr. 1,34 quality of stean $3,43 B.T.U. of stean used 232 Wt, of cu, ft,of air i: blast ,csoo4 Veloctty of air (ft. per min.) from vlan, readings 1376 Cutlet nit t ! " "W Volume of air (cu, ft, per min,) Equivalent velocity of air at 7C F, id ae Qn Velocity thru heater from condensation 25.92" volume under above conditions Ae. 4700 727 4350 743 ores Area "! tt Hs. T=STS OF 2 Hot Blast Heating Sections, MICHIGAN STaTz COLLAGL, Test No, =i-d1, FAST LANSING, iiich, LENGTH OF PIPES 3'6" & 3'3", DATE 5-742, TOTAL HEATING SURFACE 55,5 Sq, ft. FRO 3:00 P.wiy TO 4:30 By. FREE AREA THRU HEATER 5.47 " "™ Time Ore 3:50 4:00 4:8¢ av, Cor, Barometer 29.165 29,14 29,14 29,15 29,14 oteam pressure in heater o Lbs. temp, Of steam in heater 226 Temp. of entering air 7% 7 72 72 74 Temp. of leaving air C5 C 85,2 C2,9 82 .4 Temp, or test room 11.4 n.P.u. of fan 62.4 n.P..c. of motor 773 779 775 774 775 Friction loss thru heater 778 784 769 766 754 Calorineter readings eou0 2208 e200 0208 oc 2055 Lbs, in 22' ,b15 Lbs, in 15'. manometer Readings, Readings. (In. of water) i, 0450 2Oed 0450 2, 0430 2005 o4EC O. 2010 200d 0430 4, =525 2000 ~oL0 D . 2069 2oce 2000 O. 0620 ~62 .696 7. 2070 O70 0020 S, 0700 o7CO 2665 o, 0735 045 ~710 1o. e750 0770 0745 1i, 0745 0750 0705 12, 2615 2020 ~610 No, of section, 1, Total Condensation in Lbs. per hr, 107.8 167.8 " per sq. ft. per hr, 1.94 Quality of steam 95,65” B.T.U. of steam used 920 wt, of cu, ft. of air in blast ,.0713 Velocity of air (ft. per min,/) from Man readings 3204 cutlet pipe Volume of air (cu, ft. per min.) § " " 16920 =" " Equivalent velocity of air at 70 F & 29,92" Hg, 1893 Free Area " volume under above conditions 1295 8&8 " Velocity thru heater froi condensation 2°49 " " TESTS OF 2 Hot Blast Heating Section, MICHIGAN STATE COLLEGE, TEST NO, Ezxe2, EAST LanSIvG , “ICH, LENGTIL OF PIPES 3'S" & 3'3", DATE 5-95-42, TOTAL HEATING SURFACE 0.5 Sq. ft. FROM 8:40 TO 9:46 a,.i, FREE AREA THRU HEATER 5.47 B " Time 8:16 8:46 9:16 9:46 #£=Av. Cor, Batometer 29.25 29,25 29,2 29.22 29,24 Steam pressure in heater 5 Lbs, Temp. of stean in heater 2:26 Temp. of entering air 57.5 59 60 64 59,85 Temp. of leaving air 71.5 73 73.8 6 73.2 Temp, rise 13.9 Temp, of test room 73,8 R.P.2t, of fan 544 555 564 950 955 RP... or motor 795 800 B02 828 801 Frictio.x loss thru heater e126 .125 128 ~L27 ~iid Colorimeter readings Calorimeter showed no reading, MANOMETER READINGS, READINGS (In, of water) 1, 2208 . 260 e200 o, 2208 202 200 3. 2245 ecg 2200 4, e200 285 ealo OD. 220 305 298 oo e000 2020 2020 7. 320 204d e000 8, e000 ~ 585 v0 9, ~000 O90 20380 10, 580 2400 OU, 11, 2000 ~ OBO 260 12, 280 .020 ~oL0 Condensation in #bs, ~?r hr, 169 " per sq.ft. per “=r, 1,07 Quality of steam 96.87% B.T.U., of steam used Wt, of cu, ft. of air in blast ,.0728 Velocity of air (ft.per min.) from Man readings Volume of air (cu, ft, per min,) " " Equivalent velocity of air at 70 F & 29,72" He, Volaune under above conditions. Velocity thru heater from condensation 950 2eol 7570 i279 C540 4275 Outlet Pines. 1" tt "5 \ rree area tf ft ro) TESTS Ov 2 Hot Slast Heating Section, TEST NO, E-3, EAST LANSING, LENGTH OF PIENS Gho"™ oc oto", DATH o-3-12, TPTAL HEATING SURFACE 55,5 Sq, ft. Paoli 0:52 4,01, time 9:52 40:22 40:52 a4:°.22 Babometer 20,22 GO,805 Ue ae a, 83 Steam pressure in heater Temp. of steam in treater 2 Temp. (2 entering air 33,5 57 SS 35 weap, Of Leaviag air 30 38 81 SL Temp, rise Temp. of test room XePeue OF fan zac 220 +52 4.52 - RP... of motor Su 32d B22 33k rriction Low Cami Feaote rp Poo ocd C83 Crete) Calopine ver e2adiagzs .04 Lbs, in 19' ,.2: Lbs. {04 tt Mt 30! MANOMETER READIGS, READINGS (In, of water) 1, e155 2155 ~i650 Ze 2155 e155 2158 Oo. 2155 2155 2162 4, 2175 .178 .178 Do. ~185 ~195 2192 6. ~195 e200 a Aere 7, ari eol5 ~210 oe 2200 2250 ,20 9, 0255 245 2200 10, 2240 0245 2ot5 41, 0200 22t8 ~240 12, 2105 eat 22d Condensation in lbs, per hr, 81,4 " per Sq. ft, per hr, 1,47 Quality of stean 96.6% B.T.U, of steam used 928 ot, of cu, ft. of air in blast ~O71L75 Velocity of air (ft. per Volume of air (cu, min.) from lian readings ft. per min,) 8 " " Equivalent velocity of air at 70 F & 29,92" Hg, " volume under above conditions Velocity thru heater from condensation MICHIGAN STATE COLLEGE, MICH, tT.) 14303 thao + @ nv. Cor, L),12 5 Lbs, 20 Dieu 72 4. 3 si. gg we SO,4 _r ge 35 ~C805 in 30! seoe Outlet Pipes . 290 110 6020 1042 Free area Ww t? mA YT Tt TESTS OF 4 Hot Llast Neating section, MICHIGAN STaTE COLL&=an, TEST NO, E=4, PAST LANCING, itICh. LENGTH OF PIPES 3's" & 3'0", DATE 5-3-12, TOTAL HEATING SURFACE 55,5 Sq. ft. FROM 22:3:2C P,il, TO 2:50 P,. FREE ARPA THRU MEATER 5.47" " Time 12:2 12:5¢ 1:20 1:50 oN 7" aed O t wt s° . 4° men 6 y j ~ 250, Ve sae ‘ e L€y y 75 I~ 1 . _% wv - Temp. cf leavire . yes ape ~ 13 x ‘ oe uw . -@ - A a! . . 2 ! a "OP.M. cf fer ow e4 e Coa _ ren ? ii , ‘ 4 - + o- e C 5 * f + ow a wo. . a 4d 4 bs - TI a | ~Jo: mm 01) TV OT Oy ee LVAOR Wate wy ro iN de a e e a oi e oe" Ce ers ™ -é ae a a. nm { foes OW M&M OD CI WOM.>d) Cra aQaonooigdgdg@a «ra e NOONN MH CHOON st. of cu, rt, oF air in blast Velocit, of air (ft, per inta,) froa Man readin Volune of air (cu, ft. per min,) velocity of air at 79 & above conditions BEauivalent " volune under OVE, 20 725 ~ICHT vey bedi Tei k a ib "t Ary jo " m™ ASN Li Pha 1 Age we J ~ 74 ams i on 7-7 7 tw ee 3 TE COLLEGE, 9524 Outlet n 1136°> " 204 11020 ae Toes " rree area " 8 cre y MTT MICHIGAN OLTATE COL rn myrrh ad ond 3 TESIS WITH HEATING SECTIONS REVICVED, PiuST NO, F-2, EAST LANSING, “ICH, DATE 5-3-1212, Tine av,Cor, Barometer 22,14 Temp. of entering air 70,9 Temp. of leaving air 72,0 Temp, rise 2,6 Temp, of test room TO,4 RP, of fan 447 nt .P ui, or motor 354 MANOMETER READINGS, READINGS £In., of water) ~2385 ,25dD e200 296 2oLd i> Wr OWMO ON O OF Wl eR @ e e@ e e e H we eb ON OWN Clee 1 CO OE WG mnMcaoaondnano p+ OO e vt, of cu, ft. of air in blast ,07275 Velocity of air (ft. per min.) from Man, readings Volume of air (xu, ft. ver min.) 8 " " Equivalent velocity of air at 70 F & 29,92" Ig, " volume under above conditions #508 Outlet Pipes 8550 " " 1514 Free area 3260. =«—" " TESTS WITH HEATING SECTIONS RENOVED, TEST NO, F-6, AV, Barometer 29,14 temp, Of entering air 99 Temp, of leaving air 72,9 Te:no, rise 5.35 Temp, of test roon 75,4 R.P.i:, of fan O74 A.P.u. Of motor, S21 MICHIGAN BAST LAS DATE WANOWETER READINGS, READINGS (In, of water) We Velocity of air (ft. per min.) Volume of air (cu, ft. per min, ~L&0 ~L5C ore e+ vu e e bs pe © oO lIRF DOON OU WAN RF e bo © -) b+ be pe of cu, ft. of air in blast Equivalent velocity of air at " volu;ne under above ~0725 fro... Nan readinass ty ) ft " i 3 a, qq Qo" te 79 i ww wmogvnw Is condittons TATE ) or dge1 COLLEGE, svt MI CH. 3 7 —ét @ 1955 Outlet pipes A AAA ! ! 6660 1i80 Free area nao tf " O+00 TESTS UETH HEATING SECTICNS REMOVED, (i:10nIGAN STATE COLL:GE, Test NO, Fe BAST LanSiIna, wICi, od CATE 6-33-12, Av,Cor, barometer 20,14 Temp. of entering air 68 Temp. of leaving air 71,5 Temp. rise 6,5 Temp. of test room 79,4 r.P.M. of fan 736 R,P ic. Of motor 789 NANOMETER READINGS. READINGS (In. of water) 1, ~L05 2, 2LC5 O. oL05 4, ~L05 De ~110 6, .L1ic 7. ~L30 OC, 142 9, 2190 LO, 162 1i, 0LS2 12. 2135 Wt, of cu, ft. of air in blast ,.0725 Velocity of air (ft. per min.) from “an readings Volume of air (gu, ft. per min.) B " " Equivalent velocity of air at 70 fF & 29,92" H-, 446 Free area " volume under above conditions 518C " " 1955 Outlet pipes 535C ! t Oo ~ss - ee eo + wee oo er er ee -¢ ——_—- om @ > ~ . od -- - “7 ome le aes 8 ~" “ “re we BOS Od os aS temdion Ye ADs 5 air ren 8: ———- “= 197 ~~ eee ee TABBE B, VELOCITY OF ATR IN FT, FRICTION LOSS IN IN, OF WATER PER MIN, FRC CCNDENSATION wETHC? , NUUWBER OF COILS IN HEATER, i, 2. 4, 9 B00 603. 055 «(6 f05) 6153), 387 909 .043 ,084 ,147 .100 .450 4OCC ,072 ,115 .185 .145 .516 1100 ,100 ,147 .225 .295 .5uC 1200 125 165 (27 .35C .S75 1200 16.220 045) 4h C74 1400 2 167 427) BBO BOS 4500 240,615 (655 87.87 TABLE C, RELATION OF R,Pw.ii, TO AIR VeLOCITY THRU HaATeR, R.P.i. NO, COILS 2 COIL 2 COILS 3S COILS 4 COILS 5 COILS 500 8CO0 — 730 680 620 980 970 400 1030 LO1LO 950 B90 850 805 00G 1350 | 1290 1250 1170 1100 LO50 600 1650 1570 1505 1435 1560 1290 700 L900 1640 1780 1710 1550 1540 TABLE D, DROP IN AIR VELOCITY TIRU HEATER IN PER CENT CAUSED BY THE COILS FOR DIFFERNET R,P.iM. OF FAN, RPM. 1 COIL 2 COILS 3 COILS 4 COILS 5 COILS 300 8.75% 15.00% 22,503 17,503 18,80% 490 6,503 12,003 17.60% 23.00% 25.50% 500 5.50% 8,903 13.00% 18.503 22,203 600 3.68% 7.673 11.933 16.6063 20,867 700 3.16% 6.33% 4¢,00% 14.26% 18.95% wer ees cals 90%) oon 000/ Doe 008 One o09 ons nae Cd rat ‘4 ws wasoap ; Alife. Ays2 ; ) RW Sawa a sSo7 ports SAL eTFa ; } ’ } be 12 | 19 3 Ig foal tenses sees a | 1s | i is | |B } G Stasssetlsreacss sca. Be | 5 n | ! \> . Spd | Resi i t; =} | ; | : ti iceitris peers 8s) i ~~ ~ t i | ’ + i | ~ melee . -~—-—--—-4 3) Meet mene SM 4 ve eee ne 700 600 ~ OO - meme om ee ew. . ¥ owns , eee | Ls} SSOP WI wey. wee oe eh -_s os t ASSI7Lf ee F507 F ’ y WO LHTT| SIYDM/ Sore "> hy ' ey a emetic titny ee Gia conceit incite | y sa igsenres FPESTaE*1 Lle fact ~~ = - ; ; ffe/a Arve Loss | : : : : : ; : ; : Ty. Less At Hee rer o; : : : otene ; ; eee ’ ' 4 » & oe v0 on eM: zy ee / a fe nena St len os 8 : $y +4 ee Shi sek ' ; a ‘ = es i; ; ; ; { % + 2: : : 1 re vad ; thle ‘ zy -1* ¥ A ~~ * - . ' , 2s 2) ten } ; . Part pas Lh ; : ' ths tits; : : tho : ; wh el Teage rid ; ; 7 ‘ ¢ : Letts ; +4 iaitin tir eter ; Tass : t : ; tt repre itirttant ed sant : : oh Sh ebbees ost . ; ; ; rit ool) tetdae —— +* +++ oiwe + + +} eieee Sets et ttt tt ; TH a Poth eae eee Let +See thts + tbe saad > Trost ; 4 4 4-4-4 Shi + * bowme 34 t ; $iageettt iid Lee ee ba per - rar in ‘ — > i323 ' TAMA 93 03145 0053