A14 (single shell pass, four tube-side passes) heat exchanger is to be designed to heat liquid from 300 k to 370 k. the heating medium enters the shell-side at 430 k and leaves at 380 k. if 10 kg/s of cold liquid is supplied, find the heat transfer area required and suggest a suitable tube arrangement. if the hot fluid outlet temperature drops to 360 k, is the design method still valid? if not, why not?

Air inially occupying a volume of 1 m2 at 100 kpa, 27 c undergoes three internally reversible processes in series. process 1-2 compression to 500 kpa during which pv constant process 2-3 adiabatic expanslon to 100 kpa process 3-1: constant-pressure expansion to 100 kpa (a) calculate the change of entropy for each of the three processes. (b) calculate the heat and work involved in each process. (c) is this cycle a power cycle or refrigeration cycle?