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If the cost of this work input is 10¢/kW · h, how does its cost compare with the direct heat transfer achieved by burning natural gas at a cost of 86.0 cents per therm. (A therm is a common unit of energy for natural gas and equals 1.055 ✕ 108 J.) cost of heat pump cost of natural gas =

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Answer:

Explanation:

One therm = 1.055 x 10⁸J

= 1.055 X 10⁵ kJ

= [tex]\frac{1.055\times10^5}{60\times60}[/tex]kWh

29.3055 kWh

cost of 29.3055 kWh is 86 cent

or cost of imput= [tex]\frac{86}{29.3055}[/tex]

= 2.93 cent /]kWh

compare it with cost rate quoted earlier which each was

= 10

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