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A heat pump supplies 40 kW of heat to maintain the inside of a house at 25 degree C in cold winter months when the ambient temperature is 00C. Power required to operate the heat pump cycle is provided by a heat engine cycle which receives 10 kW of heat from a reservoir at 500 degree C. The heat engine has thermal efficiency of 50%. The heat engine rejects heat to the ambient reservoir at 00C.
a) Calculate the coefficient of performance of the heat pump.
b) Determine the net rate of heat transfer (kW) for the ambient reservoir.
saturated vapor steam at 5 psia eneters an adiabatic heat exchanger and leaves as saturated liquid at 5 psia. the steam
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a 2 m3 tank containing nitrogen at 25oc and 500kpa is connected through a valve to another tank containing 3kg of
A single crystal wire of iron at room temperature is subjected to a tensile stress along [010]. Calculate the resolved shear stress in the (110) plane, along the [-111] direction, if the applied stress is 7500 psi.
ten kilograms of water in a pistoncylinder arrangement exists at saturated liquid and vapor at 100 kpa with a quality
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Design value for the molded friction material and steel disks to be used 0.06 and pressure max=1400kpa. Determine appropriate values for the disk inside dimmeter, the total number of disks and the actuating force?
A process with Gp= 2/(2s+1) and Gd=1/(2s+1) experiences a disturbance step change of magnitude 5. The SP remains constant. If a P-controller alone with Kc=1 is used and Ga=Gs=1, then what is the output variable, delta Y(t) versus time?
Consider the first order system: y_dot + y = u where y is the output and u is the input, Plot the frequency response curves in Matlab using the analytic functions for the amplitude ratio and phase as a function of w. Plot the frequency response curve..
consider an accelerometer with a natural frequency of 800 hz and a damping ratio of 0.6. determine the frequency range
if the density of air is 1.2 kgm3 at the inlet and 1.05 kgm3 at the exit determine the percent increase in the velocity
a liquid food product is processed in a continuous flow sterilizer. the liquid enters the sterilizer at a temperature
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