A person walks from the store their car in the parking lot. The outside temp is 35° The person's skin is 91.49 F. Determine the net energy transfer from the person's body during the mins spent walking to the car. Note: skin emissivity is 0.90 and the surface area of the person is 1.3 square meters 18 points!!

Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.