Assume that you heat your home with a heat pump whose heat exchanger is at tc=2∘c, and which maintains the baseboard radiators at th=47∘c. if it would cost $1000 to heat the house for one winter with ideal electric heaters (which have a coefficient of performance of 1), how much would it cost if the actual coefficient of performance of the heat pump were 75% of that allowed by thermodynamics?

$187.61

Step-by-step explanation:

Data provided:

Temperature of the heat exchanger, Tc = 2° C = 273 + 2 = 275 K

Temperature of the base board radiators , Th=47° C = 273 + 47 = 320 K

Cost of heating the house = $1000

Coefficient of performance of the heat pump = 75% = 0.75

Now,

Actual performance = 75% of performance of heat pump

or

Actual performance = 0.75 ×

or

Actual performance = 0.75 ×

or

Actual performance = 0.75 ×

or

Actual performance = 5.33

Therefore, the cost =

or

cost = $187.61

i think it would be 42cm