2. An ideal refrigeration cycle that has a condenser temperature of 45°C and an evaporator temperature of-15°C. Determine the COP of this refrigerator for the working fluid R-134a.Equations:Efficiency of a turbine:Нааctual — H,W,(actual)W,(isentropic) H2isentropic – H12,acEfficiency of a compressor:W,(isentropic) H2.isentropic – H1W,(actual)Нааctual — HRankine cycle efficiency:Wnet|Wturbine] – |Wpump|dundQHQboilerCOP of a refrigerator:Q¿(heat absorbed from cold space)||Wc(work input to the compressor)

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Description: 2. An ideal refrigeration cycle that has a condenser temperature of 45°C and an evaporator temperature of-15°C. Determine the COP of this refrigerator for the working fluid R-134a.Equations:Efficiency of a turbine:Нааctual — H,W,(actual)W,(isentropi

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Answered: C. Determine the COP of this…

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Mechanical Engineering

C. Determine the COP of this refrigerator for the working fluid R-134a.

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

Chapter45: Domestic Refrigerators And Freezers

Section: Chapter Questions

Problem 12RQ: Refrigerators currently being manufactured in the United States are using______as their refrigerant.

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Condensers in these refrigerators are all_______cooled.
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1st Step: Evaluate the performance of the Refrigerator 1.Refrigerator 1 operates as a reverse Carnot cycle using R-717 as the refrigerant at aflow of 1.8 kg/s. The condensing and evaporating temperatures are 25 °C and -5 °C, respectively.To evaluate the performance of Chiller 1, you must determine the following performance parameters:project:a) Rate of heat elimination in the condenser (Q );b) The power of the compressor;c) The COP of the cycle.For the energy balance, make the following considerations:- Permanent regime;- Variation of kinetic energy and potentials are negligible;- Compressor and turbine operate adiabatically;- Evaporation and condensation steps do not involve work. Please, make it typeable, written in virtual text, do not do it by hand and do not take a photo, it interferes with the understanding of the lyrics.
2. An ideal refrigeration cycle that has a condenser temperature of 25°C and an evaporator temperature of -25°C. Compute for the work input to the compressor, heat absorbed by the evaporator from the cold space, heat released to the hot space, and the COP of this refrigerator for the working fluid R-410a. Equations: Efficiency of a turbine: W,(actual) H2.actual – H1 W,(isentropic) H2.isentropic - H, Efficiency of a compressor: W,(isentropic) H2isentropic – H1 = W,(actual) H2actual – H1 Rankine cycle efficiency: Wnet_ |Wturbinel - |Wpump| Qboiler COP of a refrigerator: Q¿(heat absorbed from cold space) B Wc(work input to the compressor) Thermodynamic tables: Water Van Ness – Page 681 Sonntag – Page 776 R-134a Sonntag – Page 810
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