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A quantity of air undergoes a thermodynamic cycle consisting of three internally reversible processes in series: Process 1-2: constant-pressure compression from P1 = 12 psia, T1 = 80F; Process 2-3: constantvolume heat addition to 160F; and Process 3-1: adiabatic expansion. (a) Sketch the cycle on p-v and T -s diagram. (b) Determine T2, in R. (c) If the cycle is a power cycle, determine its thermal efficiency. If the cycle is a refrigeration cycle, determine its coefficient of performance.
the upside-down steel a frame shown in the figure is to be bolted to steel beams on the ceiling of a machine room using
design a container using differentiation that has a volume of 2500 litres. it must use the minimum amount of material.
one way to decrease the power needed to compress a gas using a compressor is to encompass the compressor in a water
State the sequence in which the cylinders operate on the operation of the start valve and show, with the aid of a schematic diagram, how an electronic controller could be included in the circuit to control the sequence of cylinder operations.
Starting from the energy equation and using the one-dimensional heat conduction derivation as an example
No heat interactions with the environment are allowed. You do not need to describe the details of the process that produces the maximum work, but you do need to describe the final state of the blocks fully.
a water tank with an open top and square horizontal cross-section is to have a capacity of 5 m2. find the minimum cost
a servomotor is connected to a forearm axis drive shaft without any reduction drive components. the maximum weight of
the wear resistance of a steel shaft is to be improved by nitrogen hardening of its surface. the initial nitrogen
a weight attached to a spring of stiffness 525nm has a viscous damping device. when the weight is displaced and
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 ?
steam is flowing in a line at 100 bar. it is flashed out through a valve to 1 bar pressure. the temperature of the
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