Molecular Physics | Thermodynamics Answers

at a certain mountain location where the barometer reads 13.5 psia, the intake manifold gauge on a cross-country truck reads 20 inches of mercury vacuum. calculate the absolute pressure in the truck intake manifold, psia and in. of Hg.

a steam turbine develops 200 horsepower while receiving 400 BTU from each pound of steam passing through the turbine. calculate the pounds of steam per hour required by the turbine to produce this power

A steam turbine develops 149 kW while receiving 930 kJ from each kilogram of steam passing through the turbine. Calculate the kilograms of steam per hour required to produce this power (in kg/hr).

many marine steam propulsion plants achieve a fuel rate of 0.45 pound of fuel per shaft horsepower hour. determine the equivalent fuel rate in kilograms per shaft kilowatt hour

a small air compressor delivers 1 lb per min of air while supplying 3 horsepower to the air. calculate the specific work, ft-lbf/lb, supplied to the air

One pound of saturated steam at 100 psia is expanded in a reversible non-flow process from a specific volume of 0.017736 #3/16 to a specific volume of 4.434 ftp/lb. If the pressure remains constant and the internal energy increases 807.5 Btu /lb during the process, determine how much heat is transferred, Btu /lb, and whether it will be added to our abstracted from the working substance.

If the above problems is carried out as indicated, but with the additional provision that the process is also performed at a constant temperature of 327.9 F, calculate the change of entropy for the steam during the process, Btu/b.°R.

A turbine operating under steady-flow conditions receives steam at the following state: pressure, 13.8 bar; specific volume 0.143 m^3/kg specific internal energy 2590 kj/kg, velocity 30 m/s. The state of the steam leaving the turbine is as follows: pressure 0.35 bar, specific volume 4.37 m^3/kg, specific internal energy 2360 kj/kg, velocity 90 m/s. Heat is rejected to the surroundings at the rate of 0.25 kW and the rate of steam flow through the turbine is 0.38 kg/s. Calculate the power developed by the turbine.

A steady flow of steam enters a condenser with a specific enthalpy of 2300 kj/kg and a velocity of 350m/s. The condensate leaves the condenser with a specific enthalpy of 160 kj/kg and a velocity of 70 m/s. Calculate the heat transfer to the cooling fluid per kilogram of steam condensed.

a reversible non-flow process with a gas is defined by the equation pv=c. show that the work done is given by the equation wk12=p1v1ln(V2/V1)