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Air and refrigerant R22 pass through a heat exchanger in two separate streams. Assume no heat transfer to the surroundings from the heat exchanger (so, all heat transfer occurs only between the fluids), work is zero, and negligible kinetic energy change. The refrigerant's inlet and outlet locations are separated by 1 meter height, so there will be potential energy change! Air: Inlet 1: temperature 27C, pressure 1.1 bar. R22 Outlet 2: temperature 15C, pressure 1 bar (there is a pressure drop in the heat exchanger) Inlet 3: pressure 7 bars, x=0.16 (gas+liquid) Outlet 4: Pressure 7 bar, temperature 15C.

Air and refrigerant R22 pass through a heat exchanger in two separate streams. Assume no heat transfer to the surroundings from the heat exchanger (so, all heat transfer occurs only between the fluids), work is zero, and negligible kinetic energy change. The refrigerant's inlet and outlet locations are separated by 1 meter height, so there will be potential energy change! Air: Inlet 1: temperature 27C, pressure 1.1 bar. R22 Outlet 2: temperature 15C, pressure 1 bar (there is a pressure drop in the heat exchanger) Inlet 3: pressure 7 bars, x=0.16 (gas+liquid) Outlet 4: Pressure 7 bar, temperature 15C.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Air and refrigerant R22 pass through a heat exchanger in two separate streams. Assume no heat transfer to the surroundings from the heat exchanger (so, all heat transfer occurs only between the fluids), work is zero, and negligible kinetic energy change. The refrigerant's inlet and outlet locations are separated by 1 meter height, so there will be potential energy change! Air: Inlet 1: temperature 27C, pressure 1.1 bar. R22 Outlet 2: temperature 15C, pressure 1 bar (there is a pressure drop in the heat exchanger) Inlet 3: pressure 7 bars, x=0.16 (gas+liquid) Outlet 4: Pressure 7 bar, temperature 15C. See the sketch of the heat exchanger below. Place all parameters at the inlets and outlets to visualize the process: Air R22 Air 1 Determine: a.Mass flow rate ratio of the air to R22 [kg/s] b.Determine the heat transfer rate [W] from one fluid to another. 3 R22
Transcribed Image Text:Air and refrigerant R22 pass through a heat exchanger in two separate streams. Assume no heat transfer to the surroundings from the heat exchanger (so, all heat transfer occurs only between the fluids), work is zero, and negligible kinetic energy change. The refrigerant's inlet and outlet locations are separated by 1 meter height, so there will be potential energy change! Air: Inlet 1: temperature 27C, pressure 1.1 bar. R22 Outlet 2: temperature 15C, pressure 1 bar (there is a pressure drop in the heat exchanger) Inlet 3: pressure 7 bars, x=0.16 (gas+liquid) Outlet 4: Pressure 7 bar, temperature 15C. See the sketch of the heat exchanger below. Place all parameters at the inlets and outlets to visualize the process: Air R22 Air 1 Determine: a.Mass flow rate ratio of the air to R22 [kg/s] b.Determine the heat transfer rate [W] from one fluid to another. 3 R22
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