A freezer of 16 ft3 requires removal of 105 kJ heat transfer per day to maintain its temperature at 0C. a) Determine the minimum theoretical work input for one day of operation of the refrigeration cycle (cooling the freezer) if the heat is dumped into the ambient at temperature of 27C. b) What is the coefficient of performance of the refrigerator if in reality its power consumption is 400 W? How does this power consumption compare with that of similar size freezers available on market?

Agas contained within a piston-cylinder assembly e end nation about same energy states, 1 and 2, where pi 10 bar, v undergoes two processes, a and b, between the sam 0.1 m3, ui-400 kj and p2 1 bar, v2 1.0 m2, u2 200 kj: process a: process from 1 to 2 during which the pressure- volume relation is pv constant process b: constant-volume process from state 1 to a pressure of 2 bar, followed by a linear pressure-volume process to +20 0 state 2 kinetic and potential energy effects can be ignored. for each of the processes a and b, (a) sketch the process on p-v coordinates, (b) evaluate the work, in kj, and (c) evaluate process the heat transfer, in kj