Aspherical vessel 2m diameter is lagged to a depth of 300mm. the thermal conductivity of the lagging is 0.1w/mk. the temperature of the inside and outside of the lagging is 180°c and 40°c respectively. calculate the heat loss.

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.