) Steam enters a turbine operating at steady state at 800oF and 250 lbf/in.2 with a velocity of 100 ft/s and leaves as saturated vapor at 5 lbf/in.2 with a velocity of 400 ft/s. The power developed by the turbine is 200 horsepower. The mass flow rate is 3000 lb/h. Neglecting potential energy effects, determine the heat transfer from the turbine to the surroundings in Btu/h.

Air at a pressure of 1atm and a temperature of 40 c is in parallel flow over the top surface of a flat plate that is heated to a uniform temperature of 120 c. the plate has a length of 0.40m (in the flow direction) and a width of 0.15m. the reynolds number based on the plate length is 50, 000. what is the rate of heat transfer from the plate to the air? if the free stream velocity of the air is doubled and the pressure is increased to 10 atm what is the rate of heat transfer?