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A large refrigeration plant is to be maintained at -15C, and it requires refrigeration at a rate of 100kW. The condenser of the plant is to be cooled by liquid water, which experiences a temperature rise of 8C as it flows over the coils of the condenser. Assuming the plant operates on the ideal vapor-compression cycle using refrigerant 134-a between the pressure limits of 120 and 700 kPa, determine
1. The mass flow rate of refrigerant
2. The power input to the compressor
3. The mass flow rate of the cooling water
Show the cycle on T-s diagram and state ALL assumptions and proper units.
Steam at a pressure of 14.7psia and a temperature of 320deg F enters a diffuser inlet at a velocity of 500ft/s. The steam decelerates in the diffuser to a velocity of 100ft/s. The steam leaves the diffuser as saturated vapor at 240 deg F. The area of..
What information do you need to know from the process engineering department to select suitable pipe? What information do you need to know from the structural engineering department to select suitable pipe?
i a solid 1.5-m-diameter sphere floats at the interface between water sg 1.0 and mercury sg 13.56 such that 30
refrigerant r-22 enters a constant diameter pipe at a pressure of 10 bar a temperature of 20degc and a velocity of 2.20
a can of juice consists of .06 kg of aluminum and .355 liters of liquid. consider the contents to be saturated liquid
oxygen is flowing through a nominal 2 inch schedule 40 steel pipe pipe at a velocity of 10 fts. the oxygen is at a
A piston/cylinder with cross sectional area of 0.01 m2 has a piston mass of 100 kg resting on the stops. With an outside atmospheric pressure of 100 kPa, what should the water pressure be to lift the piston?
Steam at 0.2 Mpa and 300 degrees Celsius is mixed with cold water at 20 degrees celsius and 0.2 MPa to produce 20 kg/s of saturated liquid water at 0.2 MPa. Find the required steam and cold water flow rates.
A closed system contains 0.5 kg of nitrogen, initially at 150 KPa with a volume of 0.3 m^3. The system undergoes a poly tropic process resulting in the final state of 240 KPa and 100 C. Determine a) the poly tropic coefficient and b) the associated b..
Given that the nominal diameter (per print) is 15.00mm +/-0.10mm, what can be said about the expected defect rate?
A mercury manometer (r = 13,600 kg/m3) is connected to an air duct to measure the pressure inside. The difference in the manometer levels is 15 mm, and the atmospheric pressure is 100 kPa.
It is proposed to use Liquid Petroleum Gas (LPG) to fuel spark-ignition engines. A typical sample of the fuel on a volume basis consists of: 70% propane C3H8; 5% butane C4H10; and 25% propane C3H6. The higher heating values of the fuels are 50.38 MJ/..
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