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An inventor claims to have developed a power cycle operating between hot and cold reservoirs at 1175K and 295K, respectively, that provides a steady state power output of (a) 28 kw, (b) 31.2 kW, while receiving energy by heat transfer from the hot reservoir at the rate 150000kJ/h. evaluate each claim.
a reversible heat engine operating a 1500 f source and the atmosphere at 0 f produces work to drive a reversible heat
an ideal vapor-compression heat pump cycle with refrigerant 134a as the working fluid provides heating at a rate of 15
trees at the bottom of a lake are approximated as a truncated cone with a base diameter of 6 ft a top diameter of 1 ft
geothermal steam is planned as an energy source for power generation. the steam enters and adiabatic exchanger at 2
In air-conditioning systems, streams of cold and warm air are mixed to get air with the right temperature. Consider a mixing chamber into which cold air enters at 8C and 100 kPa at a rate of 0.55 m^3 /s and warm air enters at 300C and 100 kPa. The ra..
a compressed air cylinder initially contains air at 25ordmc and 100 kpa. the volume of the cylinder is 0.01021 m3. the
Determine the eigenvalues and eigenvectors for the following matrices:
an annealing process shown uses a hot plate operating at an elevated temperature of 635 c. the wafer initially at a
calculate the joule-thomson coefficient for r-134a at a state of 140 degree f and 30 psia use this value of the j.t.c.
the following data apply to the auxiliary power unit apu on the boeing 777 single-shaft unit driving separate load
Steam enters an adiabatic turbine at 6 MPa, 600°C, and 80 m/s and leaves at 50 kPa, 100°C, and 140 m/s. If the power output of the turbine is 5 MW, determine (a) the reversible power output and (b) the second-law efficiency of the turbine. Assume t..
an engineering student considers using a fan as a levitation demonstation. she plans to face the box-enclosed fanso the
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