Heat pumps can be used as a practical way of heating buildings. The ground itself can be
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Heat pumps can be used as a practical way of heating buildings. The ground itself can be used as the cold source because at a depth of a few metres the temperature is independent of the air temperature; in temperate latitudes the ground temperature is around 13°C at a depth of 10 m. On a cold day it is found that to keep a certain room at 18 °C a heater rated at 5 kW is required. Assuming that an ideal heat pump is used, and that all heat transfers are reversible, calculate the power needed to maintain the room temperature. Recall that 1 W = 1 J s−1.
Related Book For
Fundamentals of Thermal-Fluid Sciences
ISBN: 978-0078027680
5th edition
Authors: Yunus A. Cengel, Robert H. Turner, John M. Cimbala
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