2. One zone of the building is designed as office for 10 people occupancy. The building inside is maintained at 77 F. The outside air temperature is the 99.6% heating dry bulb temperature. Find the ventilation sensible heat loss. (20) Some constants and unit conversions: air heat capacity C 0.2396 Btu/lb-F, air gas constant R= 0.06856 Btu/lb-R, 1 Btu = 778 lbf-ft, 1 psia = 144 lbf/ft²

Fig: 1