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1. A reversible power cycle operating between hot and cold reservoirs at 1000 K and 300 K, respectively, receives 100 kJ by heat transfer from the hot reservoir for each cycle of operation. Determine the net work developed in 10 cycles of operation, in kJ.
2. A reversible power cycle operating between hot and cold reservoirs at 10408F and 408F, respectively, develops net work in the amount of 600 Btu for each cycle of operation. For three cycles of operation, determine the energy received by heat transfer from the hot reservoir, in Btu.
3. A power cycle operates between a lake's surface water at a temperature of 300 K and water at a depth whose temperature is 285 K. At steady state the cycle develops a power output of 10 kW, while rejecting energy by heat transfer to the lower- temperature water at the rate 14,400 kJ/min. Determine
(a) the thermal efficiency of the power cycle and (b) the maximum thermal efficiency for any such power cycle.
a certain type of rocket system is proposed for fighting fires. it will be released from an airplane above the fire and
A heat pump is used to heat a building. The outside air temperature is -10 C and the desired inside temperature is 20.3 C. The heat loss through the walls, ceiling, etc, is 30 kW. Determine the ideal coefficient of performance and the minimum power r..
the following activities and times were recorded for a mold operator removes molded piece from die 0.6 walks 10ft to a
water at 10 kpa and 40 c enters the pump of a rankine cycle. the pump has an effiiciency of 82 and pumps the water up
a system receives 10 kj of energy to do something. the system is adiabatic and its super efficient. how much work
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steam is working fluid in rankine cycle with super heat amp reheat and steam is entered in 1st state turbine 8mpa amp
A helical compression spring made from hard drawn wire needs to be designed to fit inside a 50mm cylindrical cavity and there must be enough space inside the coils for a 20mm cylindrical guide rod.
The hydraulic lift in a car repair shop has an output diameter of 30 cm and is to lift cars up to 2000 kg. Determine the fluid gage pressure that must be maintained in the reservoir.
a hail storm caused nearly golf-ball sized hail to fall on a house. the hailstones were nearly spherical with a
Wet stream (Saturated liquid-vapor mixture) at 2.00 Mpa is the initial state of a constant enthalpy process. The end state is at 0.100 Mpa, 150?. Determine the quality of the wet stream (i.e. the initial state)
a bead a weighting 2lb slides on a quarter-circular frictionless bar bc with radius. the bead is supported by a cable
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