A heat pump supplies heat energy to a house at the rate of 140,000 kJ/h when the house is...

Question:

A heat pump supplies heat energy to a house at the rate of 140,000 kJ/h when the house is maintained at 25{eq}^{\circ} {/eq}C. Over a period of one month, the heat pump operates for 100 hours to transfer energy from a heat source outside the house to inside the house. Consider a heat pump receiving heat from two different outside energy sources. In one application the heat pump receives heat from the outside air at 0C. In a second application the heat pump receives heat from a lake having a water temperature of 10{eq}^{\circ} {/eq}C. If electricity costs $0.12/ kWh, determine the maximum amount of money saved by using the lake water rather than the outside air as the outside energy source

Heat pump:

The heat pump is the mechanical device that is used to heat transfer by absorbing the cold space to the warmer place. The heat is measured in joule under the SI system. The heat pump is the device that works opposite the air conditioner. The heat pump is used to heat the cabin or room.

Answer and Explanation:

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We have given that,

Higher temperature {eq}\left( {T_H } \right) = 25^\circ C = 298 {/eq}

Lower temperature {eq}\left( {T_L } \right) = 0^\circ C...

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Types of Heating & Cooling Systems

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Chapter 10 / Lesson 9
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You can choose from a number of different heating and cooling systems to make your home comfortable to live in. Watch this video to learn about the advantages and disadvantages of forced air, radiant heat, baseboard heat and geothermal systems.


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