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Show HOME-HEATING THEIR PROBLEM 1 k JffV niMlM riM'l'HH aiitMiWHHi iiai, . nun ijii i is m II m ijit. If Yi If ; C i ' j . ..' - .. - . I y f'''''"T7ni r '' ' ' r 1 " X'- l -yr I Six r '" ;'. I y 1 I Abovei Prof. J. R. Kmewller of the W I department of engineering research, U ''' r-'" v University of Michigan, wtth Prof. LCV I A. Marin at the left and Victor W. 12? I Cherven, chief heating engineer of the f 'i Holland InatJtuU ef ThermoloQy at I n right, analyirng heating-plant data i, C Cf , i In the test-house at Anq Arbor. I Laftt Proftesor Meria arranging a J Instruments for testing the sttperlN L.m " culatlng fan m the warm -air keetlng j p(j(rt t Ann Arbor. Abovei Prof. J. E. Kmewller of the department of engineering reaearch. University of Michigan, wtth Prof. A. Marin at the left and Victor W. Cherven, chief heating engineer of the Holland Institute ef Thermology at the right, analysing heating-plant data In the teet-houee at Ann Arbor. Left i Profeeaor Maria arranging Instruments for testing the sttperelr. eulatlng fan m the warm -air heating plant at Ann Arbor. Find Way to Cool 4 Homes in Summer i Engineer Prove Super-Circulating System Ends Chilly-Room Nuisance. Ann Arbor, Mich. By operating a motor-fan unit In a warm-air heating plant in summer, the home-owner can Increase the cooling power of the air from 7 to IS per cent, according to a report issued here by Prof. J. B. Euswiler and A. Mark) of the department de-partment of engineering research of the University of Michigan. This proof that sammer cooling of homes Is possible with the same equipment equip-ment that keeps them warm In winter win-ter comes from more than SO testa recently re-cently finished by the university In co-operation with the Holland furnace company of Holland, Mich. "Fan circulation produces a well-defined well-defined cooling effect which la readily recognlaed by bodily sensation," the report states. "It produces some drop in temperature of the air In the rooms, but more of the cooling effect Is to be attributed to air motion. Cooling Effect 7 to 18 Per Cent Tan circulation produces air motion and cooling In every room. It produced pro-duced a general cooling of from 7 to 15 per cent in the rooms of the house tested. Coming at a condition of bodily bod-ily discomfort when It is most needed, an increase of IS per cent In cooling - I !- ! - I.I power teems to bo a reasonable measure meas-ure of the Increase of bodily comfort noted when the fan was In operation." Besldos yielding the facta as to the summer cooiing power of this super-circulating super-circulating plant the testa produced facts pertinent to the home-owner's winter heating problems. The motor-fan motor-fan unit forced air tato the rooms at velocities ranging from 280 to 087 feet a minute. This contrasts with velocities veloci-ties of from 100 to 800 feet In an ordinary or-dinary warm-air system. Heats Large Homes. This men ds that the air has enough driving power behind It to carry H to rooms far distant from the central heating plant, so that larger homes can be heated with super-circulating warm-air systems than heretofore. Also, installation of the motor-fan unit will bring an end to trouble with far corner rooms which their owners "have never been able to keep warm." Positive ventilation throughout the 14 rooms and two halls of the residence resi-dence rented for testing was maintained main-tained by the super-circulating system. While in a steam or hot-wator-heated home the air Is practically stagnant, and while the average warm-air ptant changes the air m each room from one to two and a half times an hour, the motor-fan unit Increased this to six and a half changes an hour in each room of the test-bouse. Professor Emswller concluded the report by stating that "the super-circulator super-circulator Is very quiet In operation, being scarcely audible," and that the cost of fan operation was about a cent an hour. |