During a fall season a heat pump is operating on a heating mode to maintain a large convention hall at 24°C during which the outside temperature is 5°C. The system is using R134a as a working fluid. The refrigerant leaves the condenser at 30°C and enters a compressor at -5°C. The refrigerant flow rate is 0.3 kg/s. Assume an ideal VCC to evaluate the system and report the followings: If similar system is used to maintain a large freezer at -0 C with an outside temperature at 25°C. a. Draw the system b. Draw process flow diagram for the cycle c. Draw detail Ts diagram for this cycle d. What is the cooling capacity BTU/hr and tons of refrigeration? e. Find COP. Is actual COP is higher or lower? Explain. f. What is the monthly cost of running this freezer if the electrical tariff is 50 cent/Unit? One unit is 1 kWh g. What is the SEER rating? h. What is maximum COP? Clearly show all your calculations and state all assumptions.

During a fall season a heat pump is operating on a heating mode to maintain a large convention hall at 24°C during which the outside temperature is 5°C. The system is using R134a as a working fluid. The refrigerant leaves the condenser at 30°C and enters a compressor at -5°C. The refrigerant flow rate is 0.3 kg/s. Assume an ideal VCC to evaluate the system and report the followings: If similar system is used to maintain a large freezer at -0 C with an outside temperature at 25°C. a. Draw the system b. Draw process flow diagram for the cycle c. Draw detail Ts diagram for this cycle d. What is the cooling capacity BTU/hr and tons of refrigeration? e. Find COP. Is actual COP is higher or lower? Explain. f. What is the monthly cost of running this freezer if the electrical tariff is 50 cent/Unit? One unit is 1 kWh g. What is the SEER rating? h. What is maximum COP? Clearly show all your calculations and state all assumptions.

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

Chapter44: Geothermal Heat Pumps

Section: Chapter Questions

Problem 2RQ: An important factor (or factors) involving water quality with regard to open-loop heat pump systems...

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