A house has an effective heat loss of 100,000 Btu/hr. During the heating season of 160 days

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A house has an effective heat loss of 100,000 Btu/hr. During the heating season of 160 days the average inside temperature should be 70°F while the outside is 45°F. Freon-134a is the working fluid and an ordinary vapor-compression cycle is used. A 10°F approach on each side may be assumed. Electricity costs $0.14/KW-hr.

(a) What is the cost in $/hr if the compressor is 100% efficient?

(b) What is the cost if the compressor is 80% efficient?

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