An isentropic compressor compresses r-134a initially at 140 kpa and -10c∘ to 1000 kpa at a rate of 1.33 kg/s. what is the temperature of the r-134 when it exits the compressor in c? how much power is needed to run this compressor in kw?

Oxygen at 300 kpa and 400 k is in a closed system with an initial volume of 0.1 m3. is now compressed in a polytropic process, with exponent of n 1.2, to a temperature of 500 k. calculate: a) the boundary work done during the compression, in kj b) the heat transfer during the compression, in kj