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A vapor compression refrigeration cycle is used. The working fluid is R134a. The fluid at the compressor inlet is a superheated vapor with a pressure p1 = 200 Kpa and a temperature T1 = 10°C. The compressor pressure ratio p2/p1 = 8, the fluid exits the condenser as a saturated liquid, and the mass flow rate is 0.8 kg/sec. The isentropic efficiency of the compressor work input is 0.65. Assume that the pressure drops in the evaporator and condenser are negligible.
a thermal power station operates on the following cycle . water is pumped into a boiler where it is converted to high
suppose that water at room temperature of 27degc is put into an ideal refrigerator that maintains an inside temperature
a 2.5 pound block b is moving with a velocity v06 fts as it hits a 1.5 pound sphere a which is at rest hanging from a
the 300 kg and 400 kg mine cars are rolling in opposite directions along the horizontal track with the respective
part 1 a piston-cylinder assembly has the piston fixed in place so it cannot move. the internal chamber is divided into
a natural gas methane pipeline is to be designed to transport the gas at a rate of 50000 scfm. the pipe is to be 6
a refrigerator with a coefficient of performance of 4.0 transfers heat from a cold region at -20 degrees c to a hot a
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 tr..
a reheat cycle operates with initial steam conditions of 1500 psia and 1000 degrees fahrenheit at the inlet to the
Gary is using a 12-bit A/D converter with a range of -10 to 10 V. His input signal comes from a pressure transducer, and has a range of -15 to 15 mV. Gary also has an amplifier circuit (output = G x input, where G is the gain of the amplifier) which ..
The process and volume relation is given p=(8-4v)bar for a non flow process ,where V is in cubic meter.If 130kJ of work is supplied to the system,calculate the final pressure and volume of the system.Take the initial volume as 0.5 cubic meter.
a pinroller supports resist . rotation displacement rotation and displacement none of the aboveb inflection points
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