Anylon pipe has a bore of 50mm and a wall thickness of 5mm. it is covered with insulation 10mm thick. the thermal conductivity of the nylon is 0.25w/mk and for the insulation it is 0.1 w/mk. the inside of the pipe carries hot water at 50°c and the outer surface of the pipe is at 10°c. calculate the heat loss per metre length and the temperature between the two materials.

A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.