While the ideal vapor-compression cycle maintains saturated vapor at the compressor inlet, it is common to adjust the mass flow rate and the evaporator conditions to maintain a level of superheat at the compressor inlet. Why do you think this is? What side-effects might this have on the cycle?

An electric kettle is made out of stainless steel, weighs two pounds (when empty) and is equipped with a heating element that consumes 2 kw of electricity. assuming that the water and the kettle are at the same uniform temperature at any moment of time, calculate the shortest possible time to bring 2 quarts of water from room temperature to the onset of boiling