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A refrigerator freezer compartment is maintained at a temperature of -15°F by removing heat at a rate of 4500 Btu/hr. The refrigerator is located in a room with a temperature of 75°F. The power input required to run the refrigerator is 1200 Btu/hr. (a) Calculate the COP for the refrigeration cycle. (b) Calculate the rate of heat transfer (Btu/hr) from the refrigerant to the room. (c) Calculate the power (Btu/hr) to run the cycle and the heat transfer rate (Btu/hr) from the refrigerant to the room if the refrigeration cycle was reversible. Assume that the heat transfer rate from the freezer compartment to the refrigerant is the same 4500 Btu/hr as for the actual cycle.
The purpose of this project is to introduce you to the application of FEA by using the ANSYS software to examine the deflection of an I-beam under a point load.
water flows 2m deep at 2ms in a rectangular channel. find the change in depth and in water surface elevation caused by
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Assume they test null hypothesis H0: versus H1: Will the engineers decide to use the steel if H0 is rejected? Will the engineers decide to use the steel if H0 is not rejected?
the elevator e has a mass of 500kg and the counterweight at a has a mass of 150kg. if the motor supplies a constant
Air expands isentropically from 1.5 MPa and 60 C (centigrade) to 0.4 Mpa. Calculate the ratio of the initial to final speed of sound.
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