4 marksSpecific Latent Heat, l

CSEC Physics · 1988 · Paper 2 · Question 2(b)

Explain how an air-conditioner is able to transfer thermal energy from the room to the outside, referring to the evaporation and condensation cycle shown in the diagram.

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2(a)State and explain THREE features of the design which could reduce the amount of solar radiation entering the building during the day and hence reduce cooling…[6 marks]
2(c)The heat capacity of a room is 3 × 10⁴ J K⁻¹. The room is cooled by an air-conditioner extracting heat at a rate of 500 W. By how much will the temperature of…[4 marks]
2(d)Architects quote the power of air-conditioning systems in 'ton' of air-conditioning, where 1 'ton' extracts the same amount of heat in 1 day as 1 ton of ice…[6 marks]

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