Fluid thermo

A cylinder contains .014 cubic metres of a fluid at 700kpa,having a specific enthalpy of 695kj/kg and a specific volume of .00125 cubic metres per kg.Heat energy is supplied until the volume of the fluid becomes .28cubic metres,the pressure remains constant at 700kpa.If the final specific internal energy of the fluid is 885kj/kg. Need the mass of the fluid,the final specific volume,work energy transfered+ the heat energy supplied?

steady flow air compressor

A steady flow air compressor compresses 50 lb/min from 14 psia and 80 degrees F to a discharge state at 45 psia and 300 degrees F. Heat departs from the air only via circulating water that enters the jacket at 75 degrees F and leaves at 95 degrees F, circulating at the rate of 15lb/min. Let the frictional losses external to the fluid be 10% of the fluid work. Determine (a) the size of the driving motor required and (b) the rate of the change of entropy of the air. Ans. (a) 76.5 hp (b) .1195 Btu/degreesR-min. I'm not sure how to deal with the information given to me concerning the water. I think I use the equation: W=m(cp)(T2-T1). I have never done a compressor problem before so ... click for more

Brayton cycle Gas Turbines

Large stationary brayton cycly gas turbine power plant delivers a powr output of 100MW to an electric generator . Minimum temperature is 300K so T1= 300k max temp is 1600k so T3= 1600k Minimum pressure in the cycle is 100kpa compressor pressure ratio is 14 to 1 so p2/p1 = 14 but turbine efficiency is 85% and compressor efficiency is 80% calculate the Power output of Turbine? What fraction of the turbine output is required to drive compressor? what is thermal effciency of the cycle? Maybe assume constant Cpo 1.004KJ/kg "for cold anal"?? K= 1.4

rankine cycle

Rankine Open Cycle with an Ideal steam reheat cycle where steam enters the high pressure turbine at 3 MPa and 400C and then expands to 0.8 MPa It's then reheated at constant pressure of 0.8 MPa to 400C and expands to 10kPa in the low-pressure turbine. Each turbine stage isentropic efficiency of 85% FWH is open T-S diagram for cycle?? What is thermal efficiency and the moisture content of the steam leaving the low- pressure turbine?

Determine the change in entropy of the surrounding.

Liquid H2O at 8 MPa and 40 degrees C is heated reversibly at constant pressure until the temperature reaches 600 degrees C. Determine the change in entropy of the surrounding (universe).