A refrigerator uses refrigerant-134a as the working fluid and operates on an ideal vapor-compression refrigeration cycle between 0.12 and 0.7 MPa at a rate of 0.05 kg/s. Show the cycle on a T-s diagram with respect to saturation lines. Determine (a)the rate of heat removal from the refrigerated space and the power input to the compressor, (b)the rate of heat rejection to the environment, (c)the coefficient of performance.

A refrigerator uses refrigerant-134a as the working fluid and operates on an ideal vapor-compression refrigeration cycle between 0.12 and 0.7 MPa at a rate of 0.05 kg/s. Show the cycle on a T-s diagram with respect to saturation lines. Determine (a)the rate of heat removal from the refrigerated space and the power input to the compressor, (b)the rate of heat rejection to the environment, (c)the coefficient of performance.

Name: A refrigerator uses refrigerant-134a as the working fluid and operates
Uploaded: 2022-11-23T13:49:29.000Z
Channel: Bartleby
Description: A refrigerator uses refrigerant-134a as the working fluid and operates on an ideal vapor-compression refrigeration cycle between 0.12 and 0.7 MPa at a rate of 0.05 kg/s. Show the cycle on a T-s diagram with respect to saturation lines. Determine(a)th

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter28: Special Refrigeration Applications

Section: Chapter Questions

Problem 15RQ: Why is two-stage compression popular for extra-low-temperature refrigeration systems?

See similar textbooks

Similar questions

Refrigerators currently being manufactured in the United States are using______as their refrigerant.
A refrigerator uses refrigerant-134a as the working fluid and operates on an ideal vapourcompression refrigeration cycle between 0.12 MPa and 0.7 MPa. The mass flow rate of therefrigerant is 0.05 kg/s. Show the cycle on a T-s diagram with respect to saturation lines.Determine;(a) The rate of heat removal from the refrigerated space and the power input to thecompressor,(b) The rate of heat rejection to the environment, and(c) The coefficient of performance.
An ideal vapor-compression refrigeration cycle uses R-134a as the refrigerant. The refrigerant enters the evaporator at 160 kpa with a quality of 25% and leaves the compressor at 65 °C. If the compressor consumes 800W of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the COP of the refrigerator
A refrigerator uses R-134a as the working fluid and operates on an ideal vapor compression cycle between 0.14 MPa and 0.8 MPa. If the mass flow rate of the refrigerant is 0.06 kg/s, determine (a) the rate of heat removal from the refrigerated space, (b) the power input to the compressor, (c) the heat rejection rate in the condenser, and (d) the COP.
3. A refrigerator uses refrigerant-134a as the working fluid and operates on the ideal vapor- compression refrigeration cycle except for the compression process. The refrigerant enters the evaporator at 120 kPa with a quality of 34 percent and leaves the compressor at 70°C. If the compressor consumes 450 W of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the COP of the refrigerator. Answers: (a) 0.00644 kg/s, (b) 800 kPa, (c) 2.03 |↓ Condenser Expansion valve 120 kPa x=0.34 Evaporator M Warm environment 70°C Compressor Cold environment
A refrigerator uses refrigerant-134a as the working fluid and operates on an ideal vapor compression refrigeration cycle between 0.18 and 0.7 MPa. The mass flow rate of the refrigerant is 72.4 g/s. Determine the power input to the compressor (in kW). Do not answer in image format
A refrigerator uses refrigerant-134a as its working fluid and operates on the ideal vapor-compression refrigeration cycle. The refrigerant evaporates at 5.00°F and condenses at 180 psia. This unit serves a 45000 Btu/h cooling load. Determine the mass flow rate of the refrigerant and the power that this unit will require. (Take the required values from saturated refrigerant-134a tables.) (Round the final answers to three decimal places.) The mass flow rate of the refrigerant is Ibm/h, and the power requirement is kW.
A refrigerator uses R-134a as its working fluid and operates on an ideal vapor- compression refrigeration cycle that uses an expansion valve (throttling device). The refrigerant evaporates at -20°C and condenses at 1.4 MPa. This unit serves a 15-kW cooling capacity. Determine the mass flow rate of the refrigerant, in kg/s.
Refrigerant-134a enters the condenser of a steadyflow Carnot refrigerator as a saturated vapor at 90 psia, and it leaves with a quality of 0.05. The heat absorption from the refrigerated space takes place at a pressure of 30 psia. Show the cycle on a T-s diagram relative to saturation lines, and determine (a) the coefficient of performance, (b) the quality at the beginning of the heat-absorption process, and (c) the net work input.
Consider a refrigeration system that operates on an actual vapor-compression refrigeration cycle with refrigerant 134a as the working fluid with an isentropic efficiency of a compressor of 83.4%. The refrigerant enters the compressor as saturated vapor at 140 kPa and is compressed to 800 kPa. Determine the value of h2 in kj/hg, answer in 4 decimal places with unit analysis. SUBJECT: Refrigeration Systems
Consider a 300 kJ/min refrigeration system that operates on an ideal vapor-compression refrigeration cycle with refrigerant-134a as the working fluid. The refrigerant enters the compressor as saturated vapor at 140 kPa and is compressed to 800 kPa. Show the cycle on a T-s diagram with respect to saturation lines, and determine (a) the quality of the refrigerant at the end of the throttling process, (b) the coefficient of performance, and (c) the power input to the compressor.
A refrigerator uses refrigerant-134a as the working fluid and operates on an ideal vapor-compression refrigeration cycle between 0.12 and 0.9 MPa. The mass flow rate of the refrigerant is 0.05 kg/s which exits the condenser as saturated liquid. (a) Show the cycle on a P-h and T-s diagram with respect to saturation lines. (b) Determine the rate of heat removal from the refrigerated space and the power input to the compressor, and (c) the coeifficient of performance.