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A condenser (heat exchanger) brings 1 kg/s water flow at 10 kPa from 300°C to saturated liquid at 10 kPa. The cooling is done by lake water at 20°C
A condenser (cooler) receives 0.05 kg/s R-22 at 800 kPa, 40oC and cools it to 15oC. There is a small pressure drop so the exit state is saturated liquid
A computer in a closed room of volume 5000 ft3 dissipates energy at a rate of 10 hp. The room has 100 lbm of wood, 50 lbm of steel and air
A container equipped with a resistance heater and a mixer is initially filled with 3.6 kg of saturated water vapor at 120°C
A constant-volume tank contains a mixture of 1 kmol H2 and 1 kmol O2 at 25°C and 1 atm. The contents are ignited. Determine the final temperature
A constant-volume tank contains a mixture of 120 g of methane (CH4) gas and 600 g of O2 at 25°C and 200 kPa. The contents of the tank are now ignited
A constant-volume tank contains 5 kg of air at 100 kPa and 327°C. The air is cooled to the surroundings temperature of 27°C
A constant pressure piston/cylinder has 2 lbm water at 1100 F and 2.26 ft3. It is now cooled to occupy 1/10 of the original volume
Find the change in availability of the control mass for each of the three cases.
A container with liquid nitrogen at 100 K has a cross sectional area of 0.5 m2. Due to heat transfer, some of the liquid evaporates and in one hour the liquid
A container has a double wall where the wall cavity is filled with carbon dioxide at room temperature and pressure.
A chiller cools liquid water for air-conditioning purposes. Assume 2.5 kg/s water at 20oC, 100 kPa is cooled to 5oC in a chiller
A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -30°C by rejecting its waste heat to cooling
A closed rigid container is charged with propane, C3 H6, and 150% theoretical air at 100 kPa, 298 K. The mixture is ignited and burns with complete combustion.
A closed feedwater heater in a regenerative steam power cycle heats 40 lbm/s of water from 200 F, 2000 lbf/in.2 to 450 F, 2000 lbf/in 2, the extraction steam
A close system consisting of 0.2 lbmol of air undergoes a polytrophic process from P1=20 lbf/in.2, ?1 = 11.50 ft3/lb to a final state where P2= 80 lbf/in2
A closed, insulated container is charged with a stoichiometric ratio of oxygen and hydrogen at 77 F and 20 lbf/in 2
A closed system consists of 0.5 kmol of ammonia occupying a volume of 6 m3. Determine
A closed system consisting of 5kg of a gas undergoes a process during which the relationship between pressure and specific volume is pv1.3 = constant.
A closed steel bottle contains ammonia at -20°C, x = 20% and the volume is 0.05 m3. It has a safety valve that opens at a pressure of 1.4 MPa
A combination air cooler and dehumidification unit receives outside ambient air at 35?C, 100 kPa, 90% relative humidity.
A coal-burning steam power plant produces a net power of 300 MW with an overall thermal efficiency of 32 percent.
A coal gasifier produces a mixture of 1 CO and 2H2 that is then fed to a catalytic converter to produce methane
A co-generating steam power plant operates with a boiler output of 25 kg/s steam at 7 MPa, 500?C. The condenser operates at 7.5 kPa and the process
A co-flowing heat exchanger has one line with 2 kg/s saturated water vapor at 100 kPa entering. The other line is 1 kg/s air at 200 kPa, 1200 K