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A rigid 100-L tank contains air at 1 MPa, 200oC. A valve on the tank is now opened and air flows out until the pressure drops to 100 kPa. During this process, heat is transferred from a heat source at 200oC, such that when the valve is closed, the temperature inside the tank is 50oC. What is the heat transfer?
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a compressor is designed to run at 4000 rpm when ambient conditions are 101 kpa and 20c. on the day when the
The temperature on the faces of a plane wall 15cm thick are 375 and 85?.The wall is constructed of a special glass with the following properties:k=0.78W/m·?,ρ=2700Kg/m³,Cp=0.84KJ/Kg·?.What is the heat flow through the wall at steady-state cond..
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a heat engine supposedly receives 500 kjs of heat from an 1100-k source and rejects 300 kjs to a low-temperature sink
an alcohol manufacturing facility emits air with 500 ppm ethanol. the air flows out several roof vents at a total flow
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