A house is to be maintained at 20°C when the outside air is at -25°C. It is determined that 1800 |KJ is required each minute to accomplish this.
A house is to be maintained at 20°C when the outside air is at -25°C. It is determined that 1800 |KJ is required each minute to accomplish this.
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Transcribed Image Text:A house is to be maintained at 20°C when the outside air is at -25°C. It is determined that 1800
KJ is required each minute to accomplish this.

Transcribed Image Text:If an electric heat pump is used to supply this energy, determine the minimum
theoretical work input for one day of operation, in kJ/day.
4.70 x 10^5 kJ/day
2.76 x 10^2 kJ/day
3.98 x 10^5 kJ/day
3.26 x 10^2 kJ/day
Evaluating electricity at 13 cents per kWh, determine the minimum
theoretical cost to operate the heat pump, in $/day. ($1 = 100 cents)
$16.97 /day
$14.38/day
$9.97/day
$1.17/day
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