6-125 A heat pump designer claims to have an air-source heat pump whose coefficient of performanceis 1.8 when heating a building whose interior temperature is 300K and when the atmospheric airsurrounding the building is at 260K. Is this claim valid?

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Answered: 6-125 A heat pump designer claims to…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Determine the COP (coefficient of performance) of a heat pump if the rate of heat rejected is 360 kJ/min and power supplied is 2 kW.
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(9) The coefficient of performance of a residential heat pump is 2.85. If the input power to this heat pump is 2.7 kW, Calculate the rate of heat supply to the house, in kJ/h.
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In refrigeration systems is it possible to change the refrigerant? If you alter the type of refrigerant whattype of changes is required for your refrigerator design? Compare two different refrigerants and discussyour proposal about the design change.
If a house needs a minimum heat transfer rate of 75 kJ/h (i.e., 75 kJ of heat needs to be transferred into the house during one hour) to maintain a pleasant indoor temperature. If one wants to use a heat pump with a COP of 5.55 to fulfill this heat transfer rate, what is the corresponding electricity (in kWh) consumption to run such a heat pump for one hour?
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A heat engine operates between thermal energy stores at 800 ° C and 20 ° C. Half of the power generated by the heat engine drives the Carnot heat pump, which is used to heat a house. While the interior temperature of the house is 22 ° C, the outside temperature is 2 ° C, the heat loss of the house is 62000 kJ / h. In these conditions, calculate the minimum heat that should be given to the heat machine per unit time as kW.
Choose the CORRECT relation between the Coefficient of Performance (CoP) for Refrigerator and Heat Pump? Select one: (CoP)Refrigerator = (CoP)Heat Pump + 1 o (CoP)Heat Pump = (CoP)Refrigerator + 1 o (CoP)Refrigerator + (CoP)Heat Pump o (CoP)Refrigerator = (CoP)Heat Pump 1 o (CoP) Refrigerator – (CoP) Heat Pump Clear my choice
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6-125 A heat pump designer claims to have an air-source heat pump whose coefficient of performance is 1.8 when heating a building whose interior temperature is 300K and when the atmospheric air surrounding the building is at 260K. Is this claim valid?