In the evaporator of an air conditioning system, air flows over finned tubes through with the refrigerant R134a flows.air outrefrigerant inrefrigerant outair inThe mass flow rate of the air is 0.75 kg/s and the air enters at 40°C and pressure 1.04 bar. The air leaves the evaporator at25°C and 1.01 bar. The refrigerant enters the evaporator with a quality of 0.2 and a temperature of 12°C. The refrigerant exitsas saturated vapor. Obtain the properties of air and R134a using the fluids "Air" and "R134a" in EES.What is the volumetric flow rate of the air entering the heat exchanger (m^3/s)?Determine the rate of heat transfer from the air to the refrigerant (W).Determine the mass flow rate of the refrigerant (kg/s).

Answered: Image /qna-images/answer/c76356f7-6530-4400-ad55-afaa2a8438b8.jpg

Answered: In the evaporator of an air…

In the evaporator of an air conditioning system, air flows over finned tubes through with the refrigerant R134a flows. air out refrigerant in refrigerant out

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 20RQ: Welded ______sealed compressors are normally used in household refrigerators.

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Question

In the evaporator of an air conditioning system, air flows over finned tubes through with the refrigerant R134a flows.
air out
refrigerant in
refrigerant out
air in
The mass flow rate of the air is 0.75 kg/s and the air enters at 40°C and pressure 1.04 bar. The air leaves the evaporator at
25°C and 1.01 bar. The refrigerant enters the evaporator with a quality of 0.2 and a temperature of 12°C. The refrigerant exits
as saturated vapor. Obtain the properties of air and R134a using the fluids "Air" and "R134a" in EES.
What is the volumetric flow rate of the air entering the heat exchanger (m^3/s)?
Determine the rate of heat transfer from the air to the refrigerant (W).
Determine the mass flow rate of the refrigerant (kg/s).

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