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Reheat, where high pressure and low pressure turbines are used, is added to a simple steam cycle to increase the steam quality at the location where the steam exits the low pressure turbine and goes to the condenser. Consider a steam cycle where the turbine entrance pressure and temperature are 3.5 MPa, 400°C, and the condenser pressure is 10 kPa. (a) Compare the turbine exit quality for a simple cycle (without reheat) with that for the low-pressure turbine exit quality of a reheat cycle where the exit at 0.8 MPa of the high-pressure turbine is reheated to 400°C and then expands through the low pressure turbine to 10 kPa. Also, (b) compare cycle efficiencies.
Steam heated at constant pressure in a steam generator enters the first stage of a supercritical reheat cycle at 28 MPa, 520°C. Steam exiting the first-stage turbine at 6 MPa
It is known that a long log floats with its axis horizontal. A very short log, however, floats with its axis vertical. Determine the maximum length of a cylindrical walnut log
Room is heated by a base-board resistance heater, which is designed to heat the air in this room from 8oC to 27 oC within 20 min. Approximating the room as a thermo-insulated
Design a spring-loaded gun to shoot a projectile to your worst enemy. The conceptual design of this gun is shown on the next page. It consists of a commercially available pi
Estimate the surface temperature of the chip located 120 mm from the leading edge of the board when the board is operated in Mexico City. The dependence of various thermophy
Provide a final/refined perspective sketch of your preferred aerial drone design. Draw (hand-sketch) orthographic projections. Show height, width, and depth of the object (as
If the friction loss in the line between the reboiler and pump is 7 kN/m2 and the density of toluene is 866 kg/m3, how far above the pump must the liquid level in the reboil
Measurements on the surface of a deformed sheet after unloading indicate that e1 = 0.154 and e2 = 0.070. Assume that the von Mises criterion is appropriate and that the loadin
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