An air conditioning unit operates on the simple refrigeration cycle using R-134a as the working fluid. The pressure bounds for the cycle are 550 kPa and 1200 kPa. The refrigeration system is maintaining a home at 26°C while the outdoor temperature is 34°C. Electronic devices inside the home (TV, computer, etc.) dissipate heat at a rate of 1200 W, and the home gains thermal energy through the walls and windows at a rate of 220 kJ/min. There are also people in the home dissipating thermal energy at a yet-unknown rate. The refrigerant exits the condenser as a saturated liquid, exits the evaporator as a saturated vapor, and the compressor has an isentropic efficiency of 85%. Determine the total rate of heat dissipated by the occupants of the home if the compressor consumes power at a rate of 900 W.
An air conditioning unit operates on the simple refrigeration cycle using R-134a as the working fluid. The pressure bounds for the cycle are 550 kPa and 1200 kPa. The refrigeration system is maintaining a home at 26°C while the outdoor temperature is 34°C. Electronic devices inside the home (TV, computer, etc.) dissipate heat at a rate of 1200 W, and the home gains thermal energy through the walls and windows at a rate of 220 kJ/min. There are also people in the home dissipating thermal energy at a yet-unknown rate. The refrigerant exits the condenser as a saturated liquid, exits the evaporator as a saturated vapor, and the compressor has an isentropic efficiency of 85%. Determine the total rate of heat dissipated by the occupants of the home if the compressor consumes power at a rate of 900 W.
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 2RQ: The operating condition for the single compressor in a household refrigerator is the lowest box...
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![An air conditioning unit operates on the simple refrigeration cycle using R-134a as the working fluid. The
pressure bounds for the cycle are 550 kPa and 1200 kPa. The refrigeration system is maintaining a home
at 26°C while the outdoor temperature is 34°C. Electronic devices inside the home (TV, computer, etc.)
dissipate heat at a rate of 1200 W, and the home gains thermal energy through the walls and windows at
a rate of 220 kJ/min. There are also people in the home dissipating thermal energy at a yet-unknown rate.
The refrigerant exits the condenser as a saturated liquid, exits the evaporator as a saturated
vapor, and the compressor has an isentropic efficiency of 85%.
Determine the total rate of heat dissipated by the occupants of the home if the compressor
consumes power at a rate of 900 W.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb78840cf-991a-43cf-baf3-7d430789620d%2Fc11450ef-2687-4d9a-8f94-3a31d3250470%2F0zgmj6o_processed.jpeg&w=3840&q=75)
Transcribed Image Text:An air conditioning unit operates on the simple refrigeration cycle using R-134a as the working fluid. The
pressure bounds for the cycle are 550 kPa and 1200 kPa. The refrigeration system is maintaining a home
at 26°C while the outdoor temperature is 34°C. Electronic devices inside the home (TV, computer, etc.)
dissipate heat at a rate of 1200 W, and the home gains thermal energy through the walls and windows at
a rate of 220 kJ/min. There are also people in the home dissipating thermal energy at a yet-unknown rate.
The refrigerant exits the condenser as a saturated liquid, exits the evaporator as a saturated
vapor, and the compressor has an isentropic efficiency of 85%.
Determine the total rate of heat dissipated by the occupants of the home if the compressor
consumes power at a rate of 900 W.
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