A Carnot heat pump with refrigerant-134a as the working fluid is used to keepa room at 78°F by absorbing heat from geothermal liquid water that enters theevaporator at 60°C at a rate of 3.78 kg/min and leaves (still as a liquid) at 40°C.The refrigerant, meanwhile, enters the evaporator at 12°C with a quality of 25%and leaves at the same pressure as saturated vapor. If the compressorOutside i InsideExpansion Valveconsumes 1.8 kW of power, determine (a) the mass flow rate (in kg/s) of therefrigerant at the evaporator, (b) the rate of heat (in kW) supplied to maintainthe room temperature, and (c) the COP. Also, what is (d) the ambienttemperature at the outside, in °C, that necessitates the use of the heat pump?CondenserQnEvaporatorAssume steam properties to compute for the thermodynamic conditions ofgeothermal water.Compressor

(a) from the energy balance of water and the refrigerant we can calculate the mass flow of…

A Carnot heat pump with refrigerant-134a as the working fluid is used to keep a room at 78°F by absorbing heat from geothermal liquid water that enters the evaporator at 60°C at a rate of 3.78 kg/min and leaves (still as a liquid) at 40°C. The refrigerant, meanwhile, enters the evaporator at 12°C with a quality of 25% and leaves at the same pressure as saturated vapor. If the compressor consumes 1.8 kW of power, determine (a) the mass flow rate (in kg/s) of the refrigerant at the evaporator, (b) the rate of heat (in kW) supplied to maintain the room temperature, and (c) the COP. Also, what is (d) the ambient temperature at the outside, in °C, that necessitates the use of the heat pump? Assume steam properties to compute for the thermodynamic conditions of geothermal water. Outside Inside Expansion Valve Condens Evaporator Compressor

A Carnot heat pump with refrigerant-134a as the working fluid is used to keep a room at 78°F by absorbing heat from geothermal liquid water that enters the evaporator at 60°C at a rate of 3.78 kg/min and leaves (still as a liquid) at 40°C. The refrigerant, meanwhile, enters the evaporator at 12°C with a quality of 25% and leaves at the same pressure as saturated vapor. If the compressor consumes 1.8 kW of power, determine (a) the mass flow rate (in kg/s) of the refrigerant at the evaporator, (b) the rate of heat (in kW) supplied to maintain the room temperature, and (c) the COP. Also, what is (d) the ambient temperature at the outside, in °C, that necessitates the use of the heat pump? Assume steam properties to compute for the thermodynamic conditions of geothermal water. Outside Inside Expansion Valve Condens Evaporator Compressor

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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