Engineering, 31.03.2020 00:05 ayoismeisalex
A compressor receives 0.1 kg / s of R-134a at 150 kPa, − 0 ° C and delivers it at 1200 kPa, 50°C. The power input is measured to be 3 kW. The compressor has heat transfer to air at 100 kPa coming in at 20°C and leaving at 30°C. What is the mass-flow rate of air?
Answers: 3
= 0.1 
= - 0 °c = 273 K
= 50 °c = 323 K
= 3 KW
= 20 °c = 293 K
= 30 °c = 303 K
= 0.1 
× 1.005 × ( 303 - 293 )
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A compressor receives 0.1 kg / s of R-134a at 150 kPa, − 0 ° C and delivers it at 1200 kPa, 50°C. Th...
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