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An ideal Otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 540R and 2400R. Accounting for the variation of specific heats with temperature, determine: A) the amount of heat transferred to the air during the heat addition process (Qin) B) the thermal efficiency and C) the thermal efficiency of a carnot cycle operating between the same temperatures.
consider an acrylic sheet of thickness l 5 mm that is used to coat a hot isothermal metal substrate at th 300 degrees
steam at 2 kg s enters a turbine at 6000 kpa and 600 c and exits as saturated vapor at 20 kpa. the turbine produces
steam at 1 bar enters an adiabatic heat exchanger with a quality of 0.89 and exits as a saturated liquid. the steam is
There are three copper blocks, A, B, and C, containing 10 kJ of energy at 600 C, 200 C, and 100C, respectively, and a fourth iron block, D, containing 10 kJ of mechanical energy. (Thus, all devices have the same amount of energy.) The surrounding tem..
air undergoes a polytropic expansion process in a piston-cylinder assembly from 75 psia and 300 f to 15 psia. employing
a constriction in a pipe will cause the velocity to rise and the pressure to fall at section 2 in the throat.nbspthe
calculate the joule-thomson coefficient for r-134a at a state of 140 degree f and 30 psia use this value of the j.t.c.
steam enters a converging-diverging nozzle operating at steady state with p1 40 bar t1 400oc and a velocity of 10 ms.
a 10 cm2 plate has an electric heater installed that produces a constant heat flux. saturated liquid water at 10 degc
In a tubular low pressure chemical vapor deposition (LPCVD) reactor, gas is introduced at one end at a rate of 75 torr-L/min. At the other end is a vacuum pump of a speed Sp. If the reactor must operate at 1 torr, what value of Sp is required?
A volume of 1.8 L of neon gas (monatomic) is at a pressure of 3.4 atmospheres and a temperature of 370 K. The atomic mass of neon is 20.2 g / mol. Calculate the mass of neon gas in SI units.
a 14 scale model of a tractor trailer is tested in a wind tunnel under standard sea level conditions. the model
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