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Example 25.9 A refrigeration cycle uses Freon-12 as the working fluid. The temperature of the refrigerant in the evaporator is –10°C. The condensing temperature is 40°C. The cooling load is 150 W and the volumetric efficiency of the compressor is 80%. The speed of the compressor is 720 rpm. Calculate the mass flow rate of the refrigerant and the displacement volume of the compressor.

Example 25.9 A refrigeration cycle uses Freon-12 as the working fluid. The temperature of the refrigerant in the evaporator is –10°C. The condensing temperature is 40°C. The cooling load is 150 W and the volumetric efficiency of the compressor is 80%. The speed of the compressor is 720 rpm. Calculate the mass flow rate of the refrigerant and the displacement volume of the compressor.

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
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Example 25.9 A refrigeration cycle uses Freon–12 as the working fluid. The temperature of the refrigerant in the evaporator is -10°C. The condensing temperature is 40°C. The cooling load is 150 W and the volumetric efficiency of the compressor is 80%. The speced of the compressor is 720 rpm. Calculate the mass flow rate of the refrigerant and the displacement volume of the compressor. Properties of Freon–12 Temperature C Saturation Enthalpy (kJ/kg) saturated Specific volume (m²/kg) pressure MPa Liquid Vapour saturated vapour -10 0.22 26.8 183.0 0.08 40 0.96 74.5 203.1 0.02
Transcribed Image Text:Example 25.9 A refrigeration cycle uses Freon–12 as the working fluid. The temperature of the refrigerant in the evaporator is -10°C. The condensing temperature is 40°C. The cooling load is 150 W and the volumetric efficiency of the compressor is 80%. The speced of the compressor is 720 rpm. Calculate the mass flow rate of the refrigerant and the displacement volume of the compressor. Properties of Freon–12 Temperature C Saturation Enthalpy (kJ/kg) saturated Specific volume (m²/kg) pressure MPa Liquid Vapour saturated vapour -10 0.22 26.8 183.0 0.08 40 0.96 74.5 203.1 0.02
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