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A system that operates in a reversible cycle receives energy by heat transfer from a 24.8oC reservoir at a rate of 25.5 kW, and delivers energy by heat transfer to a 42.1oC reservoir. Determine the rate of heat transfer (kW) to the high temperature reservoir.
Determine the coefficient of performance of a reversible refrigeration cycle (COPR) given the following information:
Tcold = 13.5oC
Thot = 29.1oC
Steam at 100 psia, 500oF is throttled to 20 psia. Changes in kinetic energy are negligible for this process. Determine the final temperature and specific volume of the steam.
a hollow spherical iron container whose outer diameter is 20 cm and the thickness is 0.4 cm is filled with ice water at
consider a steam turbine in which the steam enters at 23.26 mpa and 808 k with a flow rate of 17.78 kgs. the steam
a 5 ft3 tank containing steam at 14.7 psia 1 quality is fitted with a relief valve. heat is transferred to the tank
A 9º wedge is inserted using a force of 1000 lbs. The static coefficient of friction between the wedge and the log is 0.50. Determine the force required to pull the wedge out.
consider a single crystal oriented such that the slip direction and normal to the slip plane are at angles 42.7deg and
a concentrating solar collector consists of a parabolic reflector and a collector tube of diameter d through which
Estimate the mass flow rate of fuel into the engine in kg/h.
an insulated system is divided into 2 parts by a partition . one part of the tank contain 2.5 kg of compressed liquid
the steady-state creep rates at 473 k for any alloy are 2.510-3 h-1 at 55 mpa and 2.410-2 h-1 at 69 mpa. the activation
compute the required diameter for a solid circular shaft if it is transmitting a maximum of 110hp at a speed of 560
air enters the compressor of an air-standard brayton cycle with a volumetric flow rate of 60 m3s at 0.8 bar 280 k. the
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