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A vapor-compression heat pump system uses R-134a as the working fluid. The refrigerant enters the compressor at 0.24 Mpa, 0 degrees Celsius, with a volumetric flow rate of 0.6m^3/min. The compression process is adiabatic to 0.9 MPa, 60 degrees Celsius, and saturated liquid exits the condenser at 0.9 MPa.
Find the following: a.) The power input to the compressor, in kW.
b.) The heating capacity of the system in kW (Qout)
c.) The coefficient of performance
d.) The compressor's isentropic efficiency.
Komodo dragons are the largest lizards known to man. A 250-pound dragon can eat enough food to increase it body weight by 1/2. Which number sentence could be used to find w, the weight of a k0modo dragon after increasing it body weight by 1/2?
DOF system and Find the differential equation describing the system
To determine the heat transfer characteristics of a cylinder under cross flow conditions when the cylinder is isolated.
Determine if the shaft has infinite fatigue life. If not, determine the number of cycles to failure. Also determine the safety factor for first cycle yield and draw a free body diagram, shear and moment diagrams, and graph the loads on the shaft..
A 4 m diameter sphere is embedded in insulation. The sphere contains a liquid-ice mixture maintained at 0 deg C. The ambient temperature surrounding the insulation is 25 deg C.
Determine an expression for the number of cycles to failure, Nf if the initial crack size is a0. State any assumptions you make.
What are the knot values? How many different curves is the B-spline curve composed of? Expand the B-spline curve equation to get the separate equations of the curves in b.
Prepare the statement of financial position
Determine distribution of shear force and bending moment
Determine the mode shapes and frequencies of vibration of the system of cars by Sweeping the rigid body mode
A pump station has been designed to lift water out of a 6 metre deep pit (vented to atmosphere) via a centrifigual pump mounted at ground level. Calculate the Net Positive Suction Head (NPSH) for the system ?
What is the discharge revised discharge pressure (guage pressure) of the compressor ? Is the assumption of change in temperature valid for calculating the discharge pressure of the compressor ?
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