Question:-
For an air-conditioning system, the outdoor and indoor design dry bulb temperatures are 45°C and 25°C respectively. The space to be airconditioned is 20 m x 30 m x 5 m and infiltration is estimated to be one air change. If the density and specific heat of air are 1.2 (kg of dry air)/m3 and 1.02 kJ/k (kg of dry air)°C, then the sensible heat load due to infiltration is, nearly
Option (A)
122.4 kW
Option (B)
61.2 kW
Option(C)
12.24 kW
Option(D)
20.4 kW
Correct Option:
(D)
Question Solution:
SHL = 0.0204 x (cmm) x DT
= 0.0204 x [1 x {(20 x 30 x 5) / 60}] x (45-25)
= 0.0204 x 50 x 20 = 20.4 kW
question-answer-faq-9422