Air (cp = 1005 j/kg·k) enters a crossflow heat exchanger at 20°c at a rate of 3 kg/s, where it is heated by a hot water stream (cp = 4190 j/kg·k) that enters the heat exchanger at 70°c at a rate of 1 kg/s. determine the maximum heat transfer rate and the outlet temperatures of both fluids for that case.

Atank with constant volume contains 2.27 kg of a mixture of water phases (liquid-vapor). in the initial state the temperature and the quality are 127 °c and 0.6, respectively. the mixture is heated until the temperature of 160 oc is reached. illustrate the process in a t-v diagram. then, determine (1) the mass of the vapor in kg at the initial state, (2) the final pressure in kpa.