B3 The thermal efficiency of a refrigerator isdetermined by the coefficient of performanceCOP, which is defined as the ratio of the amountof heat removed to the input of mechanical workneeded for operation, orQoutCOP = WinСОР.%3DPart AAn air conditioner operates exactly as a refrigerator; it removes heat from a cold place (a bedroom, for example) andconveys it to a warmer place (usually the outside). Quantities of practical importance in understanding the efficiency of airconditioners are the rate of heat removal and the electric power input to the unit (i.e., the electric energy consumed per unittime). Find an expression for the coefficient of performance COP of an air conditioner that has a rate of heat removal Hand a power consumption P.Express your answer in terms of H and P.• View Available Hint(s)?COP =SubmitFor most commercial air conditioner systems, the performance of the refrigerator unit is rated according to a quantity calledthe energy efficiency rating or EER. The EER of an air conditioner is defined as the ratio of the rate of heat removal H to thepower input P required for operation. Therefore, it is essentially equivalent to the coefficient of performance COP, although,commercially, H is expressed in British thermal units per hour (Btu/hour) and P in watts. commercially, H is expressed in British thermal units per hour (Btu/hour) and P in watts.Part BGiven the definition of EER, find the EER of an 8000 Btu/hour air conditioner that requires a power input of 1500 W.Express your answer numerically in British thermal units per hour per watt.> View Available Hint(s)?EER =(Btu/hour)/WSubmit(Btu/hour)/WSubmit• Part CWhat is H, the rate of heat absorbtion by an air conditioner with an EER of 8.3 that operates at 1800 W? Recall that1 Btu = 1055 J.Express your answer in joules per minute.• View Available Hint(s)J/minute

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The thermal efficiency of a refrigerator is determined by the coefficient of performance COP, which is defined as the ratio of the amount of heat removed to the input of mechanical work needed for operation, or

The thermal efficiency of a refrigerator is determined by the coefficient of performance COP, which is defined as the ratio of the amount of heat removed to the input of mechanical work needed for operation, or

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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