In a dance hall the indoor and out door temperatures are 28 C and 18 C respectively. There is an internal heat gain of 5 kW and the specific heat of air (on volume basis) is 1300 J/m C, then the necessary cross sectional area (m ) of a duct with an air velocity of 2 m/s required for cooling by ventilation is ____________

In a dance hall the indoor and out door temperatures are 28 C and 18 C

1.	In a dance hall the indoor and out door temperatures are 28 C and 18 C respectively. There is an internal heat gain of 5 kW and the specific heat of air (on volume basis) is 1300 J/m C, then the necessary cross sectional area (m ) of a duct with an air velocity of 2 m/s required for cooling by ventilation is ____________
A.	0.190 to 1.95
B.	1.190 to 2.95
C.	3.190 to 4.95
D.	5.190 to 6.95
Answer» B. 1.190 to 2.95