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A piston/cylinder assembly in a car contains 12 in3 of air at 13 lbf/in2 and 68 F. The air is compressed in a polytropic process with exponent n = 1.25 to a final volume six times smaller. Determine the final pressure and temperature, and the heat transfer of the process
hydrogen at 25 bar 450degc enters an adiabatic turbine and expands to 2 bar 160degc with a mass flow rate of 0.2 kgs.
oxygen at 100 kpa 27degc is compressed to 1 mpa in an adiabatic compressor whose isentropic efficiency is 0.80.
at steady state a refrigeration cycle maintains a clean room at 55degf by removing energy entering the rom by heat
a residential air-conditioner with cop of 4.0 re-circulates 0.4 kg-das of indoor air that is cooled and dehumidified as
A knowing that the normal stress magnitude in each link is not to exceed 24 ksi, the shearing stress in pin F is not to exceed 15 ksi, and the deflection of point A is not to exceed .08 in.
a domestic water heater holds 189 l of water at 60 degrees c 1 atm. determine the exergy of the hot water in kj. to
at steady state a refrigeration cycle maintains a freezer at -2degc removing energy by heat transfer from the food
A Brayton gas turbine cycle has two stages of compression and two stages of expansion. The pressure ratio across each stage of the compressor and turbine is 3. The air enters each stage of the compressor at 300K and each stage of the turbine at 1..
what four processes make up the ideal otto cycle? what is happening in an actual engine during the real processes that
three kg of air contained in a sealed deformable device at 150 deg c and 500 kpa is expanded to 150 kpa in an
an ideal gas-turbine with two stages of compression and two of expansion. the pressure ratio for each stage is 3.
an automobile of weight w that has a wheel base of lenght l during fourwheel braking. the center of gravity is a
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