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A thermoelectric generator consists of a series of semiconductor elements heated on one side and cooled on the other. It is a type of thermal engine, except that the output is electrical rather than mechanical work. Electric direct current output is produced as a result of an input heat transport of energy. In a particular experiment, the steady state direct current is measured to be 0.500 A and the potential across the unit is 0.800 V. The heat input to the hot side is 5.50 W. Determine the heat transfer rate from the cold side and the energy conversion efficiency of this device.
Steam enters a turbine operating at steady-state at 700 ºF and 600 lbf/in2 and leaves at 0.6 lbf/in2 with a quality of 90%. The turbine develops 12,000 hp
a steady flow compressor is used to compress helium from 100 kpa and 20 degrees celcius at the inlet to 1400 kpa and
a furnace wall as 0.5 m thick inner layer of fire clay brick k1.7wmk a 0.1 m thick layer of kaolin brickk0.12 and a
convert the following pressures into absolute presuures.you may assume that the atmospheric pressure at the time of
noting that a person standing in a room maintained at 20degc at all times the inner surfaces of the walls floors and
find the derivative of the following function.y5cos10xx3-2x2-6x10using backward difference and central difference
a pitot static tube records a static pressure of 5.20 psig and a difference between impact pressure and static pressure
suppose that you are designing a toy car that will be propelled by water that squirts from an internal tank at 3 ms
a projectile is launched at a with a spped u and 45 degree launch angle. if the peak of the trajectiry is at 8 km from
an insulated turbine is operating on nitrogen. the gas enters at 3.8 atm 170degc and expands to 1 atm. the isentropic
an aluminum rod is made in the form of a hollow square tube. 2.25 in outside with a wall thickness of 0.120 in. its
Calculate the pressure of 15.0g of methane gas in a 1.50L vessel at 45.0 degrees C using (a) the Ideal Gas Law and (b) the van der Walls equation using the following information about the constants, a and b: a = 2.253 and b = 0.04278.
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