A heat pump that operates on the ideal vapor compression cycle. with refrigerant-134a is used'to heaț water from 15 to 50 °C at a rate of 0.24 kg/s. The condenser and evaporator pressures are 1.4 and 0.32 MPa, respectively. Determine the power input tó the heat pump where the specific heat of water is 4.18 ik/kg. C. to

A heat pump that operates on the ideal vapor compression cycle. with refrigerant-134a is used'to heaț water from 15 to 50 °C at a rate of 0.24 kg/s. The condenser and evaporator pressures are 1.4 and 0.32 MPa, respectively. Determine the power input tó the heat pump where the specific heat of water is 4.18 ik/kg. C. 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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A heat pump with refrigerant-134a (R-134a) as the working fluid is used to keep a space at 21 °C by absorbing heat from geothermal water that enters the evaporator at Ti,water = 60 °C at a rate of 0.067 kg/s and leaves at To,water = 40 °C. The specific heat of liquid water is 4.18 kJ/(kg∙K). Refrigerant enters the evaporator at TR-134a = 10 °C with a quality of x = 12 % and leaves at the same pressure as saturated R-134a vapor at the same temperature. The compressor consumes 1.4 kW of power. 1)Determine the mass flow rate (in kg/s) of the refrigerant. 2)Determine the rate of heat (in kW) supplied to the space. 2)Determine the COP of the heat pump. 4)Determine the ideal minimum power input (in kW) to the compressor for the same rate of heat supply
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The following information is provided for a refrigerator operating on the a vapor-compression refrigeration cycle with R-134a: High pressure: 800 kPa Low pressure: 160 kPa Compressor exit temperature: 50 °C The work required to run the refrigerator per kg of refrigerant is?
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In a R-134a based refrigeration system the cycle operates in the temperature range of 40°c and - 20°c. Find COP of the system if the vapor is dry and saturated .hile entering the compressor. Assume mass flow rate of refrigerant is 1 kg/s.
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Using the ideas in heat pumps under cyclic process, thoroughly explain the following(with diagram if possible)
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