A Carnot heat pump cycle is executed in a steady-flow system with R-134a flowing at a rate of 0.21567 kg/s. The net power input to the cycle is 5 kW and the ratio of the maximum to minimum temperature is 1.2. If the refrigerant changes from saturated vapor to saturated liquid during the heat rejection process, (a) plot T-v diagram of the Carnot cycle process with saturation lines, (b) determine the temperature TH during the cycle process. Hint: For the diagram, study P-v diagrams of Carnot cycle, Carnot refrigeration cycle (Chapter 6- 7) and T-v diagram in example 6-6 before you start.

A Carnot heat pump cycle is executed in a steady-flow system with R-134a flowing at a rate of 0.21567 kg/s. The net power input to the cycle is 5 kW and the ratio of the maximum to minimum temperature is 1.2. If the refrigerant changes from saturated vapor to saturated liquid during the heat rejection process, (a) plot T-v diagram of the Carnot cycle process with saturation lines, (b) determine the temperature TH during the cycle process. Hint: For the diagram, study P-v diagrams of Carnot cycle, Carnot refrigeration cycle (Chapter 6- 7) and T-v diagram in example 6-6 before you start.

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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A vacuum refrigeration system consists of a large insulated flash chamber kept at low pressure by steam ejector which pumps vapor to a condenser. Condensate is removed by condensate to an air vent. Warm return water enters the flash chamber at 13oC, chilled water comes out of the flash chamber at 5oC Vapor leaving the flash chamber has a quality of 0.97 and the temperature in the condenser is 32oC. For 350 kw of refrigeration A) How much chilled water at 5oC does this system provide? B) How much make-up water is needed? C) How much vapor must the steam ejector remove from the flash chamber?
A vacuum refrigeration system consists of a large insulated flash chamber kept at low pressure by steam ejector which pumps vapor to a condenser. Condensate is removed by condensate to an air vent. Warm return water enters the flash chamber at 13oC, chilled water comes out of the flash chamber at 5oC Vapor leaving the flash chamber has a quality of 0.97 and the temperature in the condenser is 32oC. For 350 kw of refrigeration How much make-up water is needed?
A vacuum refrigeration system consists of a large insulated flash chamber kept at low pressure by steam ejector which pumps vapor to a condenser. Condensate is removed by condensate to an air vent. Warm return water enters the flash chamber at 13oC, chilled water comes out of the flash chamber at 5oC Vapor leaving the flash chamber has a quality of 0.97 and the temperature in the condenser is 32oC. For 350 kw of refrigeration How much vapor must the steam ejector remove from the flash chamber?
From the given data, if refrigerant circulation rate is 0.025kg/s, find the refrigerant effect of the ideal vapour compression cycle.
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Condenser a steam power plant that operates on a simple ideal ranking cycle and has a net power output of 22MW. Steam enters the turbine at 7Mpa and 450.05°C and is cooled in the condenser at a pressure of 10kpa by running cooling water from a lake through the tubes of the condenser at rate of 1750 kg/s. Determine the mess flow rates of steam through the steam turbine assuming that the cp of superheated steam is 2.9593kJ/kg.K.
Just to check the answer no need calculation
Carnot cycle heat pump utilizes R-134a as the working fluid. Heat is transferred from the fluid at 100 F, and during this process the refrigerant changes from saturated vapor to saturated liquid. Heat transfer for the refrigerant takes place at 20 F. You are asked to do the following: (a) Show and describe the cycle on a T-s diagram (b) Calculate the quality at the beginning and at the end of the isothermal process at 20 F (c) Determine the coefficient of performance for the cycle.
I need the answer as soon as possible
A:- A commercial refrigerator with refrigerant-134a as shown in Fig. Q3A as the working fluid is used to keep the refrigerated space at -35 °C by rejecting waste heat to cooling water that enters the condenser at 18 °C at a rate of 0.25 kg/s and leaves at 26 °C. The refrigerante enters the condenser at 1.2 MPa and 50 °C and leaves at the same pressure subcooled by 5 °C. If the compressor consumes 3.3 kW of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, and (c) the COP. 12 MPa 5°C subcooled Expansion valve Fig. Q3A Condenser Evaporator Qu Water 18% 1.2 MP 56PC Compressor
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