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An inventor claims to have made an engine that operates from a plutonium energy source at 1060°R and a heat sink at 558°R. He also claims that the engine produces 4.80 hp while rejecting 16000 Btu/hr of heat.
a) What is the claimed efficiency of the engine?
b) What is the claimed 2nd Law efficiency?
c) Is this engine possible?
Air is expanded from 315 psia and 650 F to 96 psia and 40 F. Assuming constant specific heats at room temp, determine the change in the specific entropy of air.
A 15.9-kg aluminium block initially at 197 C is brought into contact with a 17-kg block of iron at 92 C in an insulated enclosure. Determine the final equilibrium temperature and the total entropy change for this process.
What is the fathers role in decision, considering the historical and contextual role of fathers in making decisions regarding pregnancy?
Propose an interesting Heat-Transfer project that includes a numerical analysis to determine temperatures and heat rate or heat flux. Object, device or system description and sketch.
Determine the voltage gain and calculate the current - Is the circuit capacitive or inductive and explain.
A system consisting of 2 kg of water initially at 160 C, 10 bar undergoes an internally reversible, isothermal expansion during which there is an energy transfer by heat into the system of 2700 KJ. Determine the final pressure (in bar) and work (in K..
The inlet and outlet air temperature of a centrifugal flow compressor are 70oF and 120oF respectively (See Figure 1). The air flow steadily at a mass flow rate of 24 lbm/min. If the compressor is adiabatic, determine the rate of work at which the air..
A steady-state, well insulated turbine operated in two stages in series using steam . The first stage has an efficiency of 85% and the second stage 90%. Steam enters the first stage at 400 C degree and 4 MPa and exits at 1.5 MPa.
Water enters a pump at 120 kPa and 25 C degree at a rate of 1.5 kg/sec and leaves at 4 MPa . The pump has an efficiency of 75% . Determine The actual power input in KW. The entropy generation of the pump.
An adiabatic compressor is used to bring saturated water vapor at a pressure of 103 lbf/in^2 up to 1000 lbf/in^2 , where the actual exit temperature is 1000 F degree. Find the compressor efficiency and the entropy generation. is there an improvement ..
a carnot engine operates between temperatures of 700k and 400k and does 150 j of work in each cycle. what is the
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find the transfer function for the following impulse responsefind the transfer function for the following impulse
air is compressed in a piston-cylinder device from 90 kpa and 20 degrees c to 400 kpa in a reversible isothermal
argon gas flows steadily through a well-insulated turbine at the conditions shown below. some of the flow exits at an
On a single graph, plot "Hardness" as the ordinate versus "Aging Time" as the abscissa for each aging temperature - Discuss the effect of aging time and temperature on the effect of material hardness.
the retracting load on a 2 in diameter hydraulic cylinder increases from 10000 lbto 15000 lb. du to the compressibility
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