Calculate the amount of work input a freezer needs to make ice cubes out of a tray of 0.25 kg liquid water at 10°c. assume the freezer works in a carnot cycle between −8°c and 35°c with a motor-compressor of 600 w. how much time does it take if this is the only cooling load?

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

Slip occurs via two partial dislocations because of (a) the shorter path of the partial dislocation lines; (b) the lower energy state through partial dislocations; (c) the charge balance.

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.