1. An ice-making machine is required to remove 0.7 Btu/s of heat from water to produce ice (Qin). This ice machine is a refrigerator that operates steadily using R134a as the working fluid. The refrigerant enters the compressor as saturated vapor at 20 psia and leaves the condenser as saturated liquid at 80 psia. Draw a diagram showing the components of the refrigeration system inside the machine b. Show the cycle on a T-s diagram Calculate the work input required by the machine [0.176 hp or 0.124 Btu/s] C. d. What is the COP of this device? What does this represent? [5.6]

1. An ice-making machine is required to remove 0.7 Btu/s of heat from water to produce ice (Qin). This ice machine is a refrigerator that operates steadily using R134a as the working fluid. The refrigerant enters the compressor as saturated vapor at 20 psia and leaves the condenser as saturated liquid at 80 psia. Draw a diagram showing the components of the refrigeration system inside the machine b. Show the cycle on a T-s diagram Calculate the work input required by the machine [0.176 hp or 0.124 Btu/s] C. d. What is the COP of this device? What does this represent? [5.6]

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

Chapter44: Geothermal Heat Pumps

Section: Chapter Questions

Problem 13RQ: If 14 gpm of water is flowing through an open-loop heat pump with a temperature difference of 7F,...

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