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A carnot heat engine receives heat from a reservoir at 925oC at a rate of 730 kJ/min and rejects the waste heat to the ambient air at 24oC. The entire work output of the heat engine is used to drive a refrigerator that removes heat from the refrigerated space at 1oC and transfers it to the same ambien air at 24oC. Determine
(A) the maximum rate of heat removal from the refrigerated space ( in kJ/min )
(B) the total rate of heat rejection to the ambient air (in kJ/min)
a stone is released from an elevator moving up at a speed of 12 fts and reaches the bottom of the shaft in 2.5 s. a how
Use steam tables to compute the total volume, total enthalpy, and total entropy of 1kg of water at 100o C, half by weight of which is steam and the remainder is liquid water.
Water as a saturated vapor at 600 °F is contained in a piston-cylinder device that has an initial volume of 30 ft3. The device undergoes a constant temperature process, until the water reaches the saturated liquid condition. Draw and label the state..
saturated water vapor at 200 kpa is expanded slowly without friction i.e. internally reversible and isothermally in a
a 1000 diameter steel tube with a .020 wall thickness supports a 350lb load in compression as shown. calculate the
12. 3 kg of refrigerant 22 undergoes a process for which the pressure-specific volume relation is pv^-0.8 = constant. The initial state of the refrigerant is 12 bar and 60 degrees C. The final pressure is 8 bar. Kinetic and potential energy effects a..
1 a gas turbine power plant produces a net power output of 100 mw with an overall thermal efficency of 35a if the
milk is to be transported from texas to california for a distance of 2100 km in a 7-m-long 2-m-external-diameter
What is the phase and the specific volume of water at 3000 Kpa and 455 degrees C? Show this state on a PV diagram
a cyclist is traveling at 8ms when she encounters a hill with 2 grade assume the elevation increases by 2 for every 100
an annular spur gear 1 mounted on shaft a has 120 teeth and drives a spur gear pinion 2 having 15 teeth mounted on
concentration is a process by which both useful heat and energy are produced. here a portion of high -pressure steam is
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