Refrigerant 22 vapor enters the compressor of a refrigeration system at an absolute pressure of 20 lbf/in.2. A pressure gage at the compressor exit indicates a pressure of 280 lbf/in.2 (gage). The atmospheric pressure is 14.6 lbf/in.2. Determine the change in absolute preRefrigerant 22 vapor enters the compressor of a refrigeration system at an absolute pressure of 20 lbf/in.2. A pressure gage at the compressor exit indicates a pressure of 280 lbf/in.2 (gage). The atmospheric pressure is 14.6 lbf/in. 2. Determine the change in absolute pressure from inlet to exit, in lbf/in.2.ssure from inlet to exit, in lbf/in.2.