Refrigerant-134a enters a diffuser steadily as saturated vapor at 800 kPa with a velocity of 120 m/s, and it leaves at 900 kPa and 40°C. The refrigerant is gaining heat at a rate of 2 kJ/s as it passes through the diffuser. If the exit area is 80 percent greater than the inlet area, determine (a) the exit velocity and (b) the mass flow rate of the refrigerant. (for R-134, vs00 kPa= 0.025621 m/kg; hsoo kPa-267.29 kj/kg) (for R-134, v900 kPa, 40°C= 0.023375 m/kg; ho0o kPa, 40°C=274.17 kj/kg)

Refrigerant-134a enters a diffuser steadily as saturated vapor at 800 kPa with a velocity of 120 m/s, and it leaves at 900 kPa and 40°C. The refrigerant is gaining heat at a rate of 2 kJ/s as it passes through the diffuser. If the exit area is 80 percent greater than the inlet area, determine (a) the exit velocity and (b) the mass flow rate of the refrigerant. (for R-134, vs00 kPa= 0.025621 m/kg; hsoo kPa-267.29 kj/kg) (for R-134, v900 kPa, 40°C= 0.023375 m/kg; ho0o kPa, 40°C=274.17 kj/kg)

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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Question

3) Refrigerant-134a enters a diffuser steadily as saturated vapor at 800 kPa with a velocity of 120
m/s, and it leaves at 900 kPa and 40°C. The refrigerant is gaining heat at a rate of 2 kJ/s as it
passes through the diffuser. If the exit area is 80 percent greater than the inlet area, determine (a)
the exit velocity and (b) the mass flow rate of the refrigerant.
(for R-134, vs00 kPa= 0.025621 m/kg; hs00 kPa-267.29 kj/kg)
(for R-134, v900 kPa, 40°C= 0.023375 m'/kg; h9oo kPa, 40°C-274.17 kj/kg)

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