Problem 1 (20 points) A nozzle receives steam at the entrance. The temperature of steam is 673K and the pressure is 8 atm. The steam exits the nozzle at 573K and 2atm. Calculate the exit velocity of the flow and the volume flow rate at the exit. The initial velocity is 10 m/s. The net loss of heat through the walls of the nozzle is 25 kW. The area of inlet is 0.08 m2.

Give heat transfer applications for the following, (i) gas turbines (propulsion) ) gas turbines (power generation). (iii) steam turbines. (iv) combined heat and power (chp). (v) automotive engines

What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.

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.