—— |THS| THESIS Regenerative Heating and Yentilation S, S. Fisher K. £. Hopphan moh, THESIS This thesis was contributed by Mr. K. E. Hopphan under the date indicated by the department stamp, } to replace the original which was destroyed in the fire of March 5, 1916. iy ti i Pit | [ Vv; . ” SEP 25 1918 DEPARTMENT OF CIVIL ENGINEERING TESIS REGENSRATIVE HEATING AND VENTILATION MICHIGAN AGRICULTURAL COLLEGE +4 00020004+ 4m mes —-00/T50B700~-- Se. S. FISHER K.. E.. HOPPHAN oa THESIS REGENERATIVE HEATING AND VENTILATION Objects; (1) Devising a plan by which the heat of the foul air may pass thru the walla of the pipes containing the fresh incoming air, thus being used, in part, over and over again; (2) applyinre this system to the design of a house of about twelve rooms, giving the plan of the basement and of each story,as well as a cross-sectional view of whole house, showing the system in operatione. Each day's work under its own heading. Monday, Dec. 21, '08 Determined general outline of thesis; for first part it was to be the finding the amount of heat exchanged thru the walls of Pipes of different sizes and forms, the finding of the velocity of incoming air, and also the pressure at each end (whence the fric- tion of the pipe is obtained). The use of tris system would mean the building of an air= chamber in a central position of the house--to communicate with rooms more readily--up which the foul air is to pass, and down which the fresh air is to come to basement in a nest of tubese. To avoid more room for chimney the idea wag brought out of having this space for a chimney, thrg which the flue-gas from the fur- mace and kitchen range are conducted in wrought iron pipes, thus 2647798 | #2 using much of their heat to the same end,- & Bed room, d 6.21" (6¢*) 4.18% (44*) > Up stairs Reading room, like library in floor space # 4.68" for d. Bed room, above parlor, same in floor space, d= 5.6" Bed room, above bedroom, same, d= 5.27*.. Bath room, same as below, d #2 3.33", Rooms above of different sige, /% 2bgx%9 Bed room, -/ 26 = 26 2 4.74"°5 4. V {165.8 x 9 Bed roon, 25 #8 25 = = 5.43 = ad. ~/2 -~/2 : $30 Taking the sum of the 3.1416R® Of above pipes, it is found that the cross-section of the main flue, by slide-rule, must be 279.6 sq. ine As dampers even tho open obstruct air, will take required cross section at two sq. ft., - a pipe 2' x if if rectangular, Probably more than oneehalf of the foul air of house is emptied directly into the @ir-chamber; but will allow a return flue of one square fcot’s cross-section to carry back foul air from roome not adjacent to air chamber. Above formulagare for hot air heating, but the assumption was made that only one-half as much aree was needed by this method. Then 3.141GR° = 2 R2 = 2, Ryp-(/2.. Or, required radius s: old Sines Tt ErlY , radius :3 1 30/2. The blue vrints show the fresh and foul air ducts as pianned, - the latter by a heavy broken line. Conclusion The plans here given can hardly be expected to be put into a building to be constricted without revising, perhaps radically. The idea of surrounding the furnace smoke flue by the nest of pipes in horse-shoe shape, eas on the blue=-prints, for ex- ample, is not mentioned in first part of thesis, and many other changes might well be made. LI@st the plans be understood too rigidly, the following surrestions are made; increase number of pipes to decrease speed of incomirg wir and work of fan; even substitute copper for iroh,. 1f original cost be disre=- garded, to fet out more of the hext. #351 In a small house’ by careful planning nearly every room could be adjacent to the fresh-air chamber; and it could also be made a safe place for heating pipes, gas-pipes, electric wiring to floor above, eto., as it is near the center of the house and connected with the outside by small opening in side of chimneye. In large buildinrvs the rooms could be grouped about central systems.. This idea of regenerative heating may become a means of great saving, especially when the certain increase in the future cost of coal occaurs. DGH Tia beet ee eee ee ey ‘uoigoipru fo aft rors ere ROR eRe BGS VoL o Be Teh aie et ae ee eet ee lee mace RL tne 4 Re oe Bee ee a re Te eae | N St wee a Pare Dera its coe ei: Oh Ske ee ek te | ne ee | : Ri” < | N 2 8 . S; ; ore on eee a Eyer; Set Ua TS fod N Y \ \ N \ \ Wy 0\ \ 8 S \ XN \ \ S ag A LEN sli ree CU cata eae \ Niji a Vi - \ : | Nill S ay REELS TET et ee — rare lenses GN G sks v cnum na ea EE iy TOC ERE goats eet Y BSS claw ae / gcuaa aS. | NS | - i We ie od ca Coal-bins WaT na able Cellar Cae ta Se ha VUnNventLrons: Re x BESTE WW Basement Plan. Cemen haurflue G& Hopphan & anette Scale, 5'=!" 09 Thesis Platform. CEO eeM Ch oe rel lay a. hae aah aon st rate First Floor Plan. a. aie delehs 0 Corridor, ee: Bedroom. Reading ater e Porch Roof PF roni- - eee wel ae aaa HT 3 1293 03056 4987