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a) Two thermal reservoirs are placed in contact with each other. Prove from the increase of entropy principle that heat transfer will be in the direction of high temperature to low temperature.
b) Prove using the increse in entropy principle that the maximum thermal efficiency for any heat engine is the Carnot efficiency.
c) Using the Tds equations to show that the polytropic exponent of an ideal gas undergoing an isentropic process is k( the ratio of specific heats).
a stationary gas turbine power plant operates on a simple ideal brayton cycle with air as the working fluid. the air
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
if the exit velocity needs to be 27 ms and the nozzle tip has a diameter of 0.48 mm what is the volumetric flow rate
steam at 1 mpa 630.2oc expands in an insulated piston cylinder assembly to 0.01 mpa. determine the maximum work kj done
the motion of a particle is defined by the equation x4t3 - 5t2 5t and y5t2-15t where x and y are expressed in
a rigid tank contains an ideal gas at 40u2070c that is being stirred by a paddle wheel. the paddle wheel does 200 kj of
a large tower is to be supported by a series of steel wires.it is estimated that the load on each wire will be 11100N. determine the minimum required wire diameter assuming a factor of safety of 2 and a yield strength of 1030MPa.
1. an aluminum casting that weighs 10 pounds sits on a steel surface. how much force will be necessary to get it to
a round compression member with both ends pinned and made of aisi cold-drawn steel sy441 mpa e207 gpa is to be used in
a counter shell and tube exchanger is used to heat water with hot exhaust gases.the water c4180 jkg cflows at a rate 2
a partitioned chamber that is well insulated has frac12 filled with h2o at 500 deg f and 50 psia and the other frac12 a
an electric wire made of c14500 copper is stretched between two street supports at 20 degrees celcius so that a stress
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