A back pressure steam cycle works as follows. The boiler produces 8 kg/s of steam at 40 bar and 500degs c. This is expanded to 2bar with an isentropic efficiency of 0.88. The pump is supplied with feed water at 0.5bar and 30degs c and delivers it to the boiler at 31degs c and 40bar. Calculate the net power output of the cycle.

Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.

Water at 55c flows across a flat plate whose surface temperature is held constant at 95c. if the temperature gradient at the plate's surface for a given value of x is 18 c/mm, find a) local heat transfer coefficient. b) heat flux

How much power could a wind turbine produce if it had the following specifications? cp = 0.45 -d=1.2kg/m3 d=50m v 5m/s