A simple vapour compression refrigeration cycle using R-12 is designed for taking a load of 10 tonnes (1 ton of refrigeration is 3.5 kJ/s). The refrigerator and ambient temperatures are -0⁰C and 30⁰C respectively. A minimum temperature difference of 5⁰C is required in the evaporator and condenser for heat transfer. Determine: (a) the mass flow rate through the system (b) the power required in kW (c) the COP (d) the cylinder dimensions of the compressor assuming L/D = 1.2 for a single cylinder, single acting compressor if it runs at 300 rpm with volumetric efficiency of 90%.
A simple vapour compression refrigeration cycle using R-12 is designed for taking a load of 10 tonnes (1 ton of refrigeration is 3.5 kJ/s). The refrigerator and ambient temperatures are -0⁰C and 30⁰C respectively. A minimum temperature difference of 5⁰C is required in the evaporator and condenser for heat transfer. Determine: (a) the mass flow rate through the system (b) the power required in kW (c) the COP (d) the cylinder dimensions of the compressor assuming L/D = 1.2 for a single cylinder, single acting compressor if it runs at 300 rpm with volumetric efficiency of 90%.
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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A simple vapour compression refrigeration cycle using R-12 is designed for taking a load of 10 tonnes (1 ton of refrigeration is 3.5 kJ/s). The refrigerator and ambient temperatures are -0⁰C and 30⁰C respectively. A minimum temperature difference of 5⁰C is required in the evaporator and condenser for heat transfer. Determine: (a) the mass flow rate through the system (b) the power required in kW (c) the COP (d) the cylinder dimensions of the compressor assuming L/D = 1.2 for a single cylinder, single acting compressor if it runs at 300 rpm with volumetric efficiency of 90%.
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