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A gas refrigeration system using air as the working fluid has a pressure ratio of 5. Air enters the compressor at 0 Celsius. The high-pressure air is cooled to 35 Celsius by rejecting heat to the surroundings. The refrigerant leaves the turbine at ( - 80 C ) and then it absorbs heat from the refrigerated space before entering the regenerator. The mass flow rate of air is 0.4 kg/s. Assuming isentropic efficiencies of 80 percent for the compressor and 85 percent for the turbine and using constant specific heats at room temperature, determine (a) the effectiveness of the regenerator, (b) the rate of heat removal from the refrigerated space, and (c) the COP of the cycle. Also, determine (d) the refrigeration load and the COP if this system operated on the simple gas refrigeration cycle. Use the same compressor inlet temperature as given, the same turbine inlet temperature as calculated, and the same compressor and turbine efficiencies.
rope AB an AC are thrown to a boater whose canoe has capsized.Given that the angle is 25 and the magnitude of the force FR exerted by the river on the boater is 70N determine the tension in rope AB , in rope AC.
refrigerant-134a enters the evaporator coils placed at the back of the freezer section of a household refrigerator at
the frame ACD is supported by a ball-and-socket joint at A and D and by a cable which passes through a ring at B and is attached to hooks at G and H. Knowing that the frame supports at point C a load of magnitude P=268N, determine the tension in t..
superheated steam at 500 celsius and 3 mpa enters a steady state turbine with a mass flow rate of 500 kgs. the steam
an air-standard diesel cycle operates with a compression ratio of 18. at the beginning of the compression process the
water is sprayed radially outward over 180 degrees. the jet is in the horizontal plane. if the jet velocity at the
cast aluminum products often contain gas porosity and shrinkage cavities which can undermine the integrity of these
there are supplied to a nozzle 2400 lbhr of steam at an absolute pressure of 200 psia. at the entrance v1 6000 ftmin
the density and associated percent crysallinity for two nylon 66 materials are shown as follows compute the desities of
If I take measurements using a Pitot Tube and get results for pressures Horizontal In, Horizontal Out, Vertical In, and Vertical Out all in inches of mercury. How do I take these pressures and determine a Velocity using Bernoullis equation?
if silcion is cooled quickly it will form glass instead of crystallyzingone way to do this is to deposit si atoms onto
please find attached some work i need help with. i have also attached the appendix which the work says is required to
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