question archive A house that previously used electric resistance heaters consumed 1400 kWh of electric energy in a month
A house that previously used electric resistance heaters consumed 1400 kWh of electric energy in a month
Subject:Mechanical EngineeringPrice: Bought3
A house that previously used electric resistance heaters consumed 1400 kWh of electric energy in a
month. If this house is now heated by a heat pump that has a COP of 2.5, determine how much money
the house owner now saves in a month. If the inside and outside temperatures are nearly constant at 20
°C and -10 °C, determine the rate of entropy generation within the house in the two cases (electric
resistance heating vs. heat pump). Are there other entropy generations outside the house? Are they
different for the two heating techniques? Write brief one-line/ one-phrase explanations.
Start by clearly showing the system(s) you are considering and the energy and entropy flows. Clearly
label the parts and use SI units only.
