A field study of infiltration-induced variations in the heating of apartments.

Makes a field study of energy consumption in 3 electrically heated high rise apartment buildings in Chicago, to see if stack effect causes significant variations in the heating requirements of apartments according to their location in tall buildings. The buildings have 30, 42, and 45 floors, and theheating consumption for December through March is computed and plotted against floor number. Results show that normal stack effect is suppressed in a tall apartment building when supply and exhaust fans are running. Since the effect on heating consumption is weak in buildings of over 40 storys, it is probably negligible in the more common case of apartment buildings of 20 storys or less.