Thermodynamicclass  contains  32  undergrad  students.  The  plan  is  to   air-conditionthe classroomwith air-conditioning units of 8-kW cooling capacity. It is assumed that on average each studentdissipate heat at a rate of about 300 kJ/h. There are 12lightbulbs in the room, each with a rating of 100 W. The rate of heat transfer to the classroom through the walls and the windows is estimated to be 14,000 kJ/h. If the room air is to be maintained at a constant temperature of 23oC,i.e. ∆?????≈0, determine the number of air-conditioning units required.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Thermodynamicclass  contains  32  undergrad  students.  The  plan  is  to   air-conditionthe classroomwith air-conditioning units of 8-kW cooling capacity. It is assumed that on average each studentdissipate heat at a rate of about 300 kJ/h. There are 12lightbulbs in the room, each with a rating of 100 W. The rate of heat transfer to the classroom through the walls and the windows is estimated to be 14,000 kJ/h. If the room air is to be maintained at a constant temperature of 23oC,i.e. ∆?????≈0, determine the number of air-conditioning units required.

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