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A wet compression refrigeration cycle uses HFC-134a as the working fluid and operates between 75 F and 8 F. Use a mass flow rate of 50 lbm per hour. Use the tables (in the text) find the enthalpy values and the diagram the cycle on the chart (provided). Find the power (in HP) of the compressor, the heat rate added (in BTU/hr), and the heat rate rejected (in BTU/hr), and compare the Coefficient of Performance and the Coefficient of Refrigeration for these cycles with the Carnot Cycle Coefficient of Performance and Coefficient of Refrigeration.
a bridge to be fabricated of steel girders is designed to be 500 m long and 12 m wide at ambient temperature assumed 20
A 200 kg crate is to be supported by the rope and pulley arrangement shown. Determine the magnitude and direction fo the force P that must be exerted on the freee end of the rope to maintain equillibrium.
a belt pulley is fastened to a 75 mm shaft running at 360 rpm by means of a key 18 mm wide and 125 mm long. the
1. a househusband is steaming beef for his family in a pan with a surface area of 23.544 cm2 that is covered with i a
1. an employee at general electric must order bottles of compressed methane to run her gas oven test facility. the
a plastic ring or hula-hoop is thrown to the right with a velocity of 8ms and it moves in such a way that it produces a
determine the electrical power input to the pump. the density of water is 1kg/l.
it has been determined that a point in a load-carrying member is subjected to the following stress condition sx 400 mpa
distillation of multicomponent alcohol mixture. a feed of 30 mol methanol a 20 ethanol b 15 n-propanol c and 35
an engine operates on an air-standard brayton cycle with reheat. the work required to compress the air in one stage
a gas turbine brayton cycle operates with an intercooler a re-heater and a regenerator. air enters the engine at 14 psi
a four-cylinder engine with a 9.5-cm bore and an 8.75-cm stroke has a 7 clearance. the engine rotates at 2500 rpm. the
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