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how do the inefficiencies of the turbine and the compressor affecta the back work ratio andb the thermal efficiency of
for each of the cases below determine if the heat engine satisfies the first law energy equation and if it violates the
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refrigerant-134a enters an adiabatic compressor as saturated vapor at 160 kpa at a rate of 2 m3min and is compressed to
during an experiment conducted in a room at 25degc a laboratory assistant measures that a refrigerator that draws 2 kw
during a picnic on a hot summer day all the cold drinks disappeared quickly and the only available drinks were those at
during a hot summer day at the beach when the air temperature is 30degc someone claims the vapor pressure in the air to
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consider subsonic flow in a converging nozzle with fixed inlet conditions what is the effect of dropping the back
consider an infinitesimal reversible adiabatic compression or expansion process by taking s sp v and using the maxwell
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an old gas turbine has an efficiency of 21 percent and develops a power output of 6000 kw determine the fuel
an office worker claims that a cup of cold coffee on his table warmed up to 80degc by picking up energy from the
an object whose weight 100 lbf experiences a decrease in kinetic energy of 500 ft lbf and an increase in potential
prepare a fmeca analysis on a hds reactor all the information about the reactor are attaches including the format
an object whose mass is 400 kg is located at an elevation of 25 m above the surface of the earth for g 978s2 determine
an object whose mass is 35 lb is subject to an applied upward force of 15 lbf the only other force action on the object
an object whose mass is 300 lb experience changes in its kinetic and potential energies owing to the action of a
an initially empty cylinder is filled with air from 70 f 15 psia until it is full assuming no heat transfer is the
an ideal gas refrigeration cycle using air as the working fluid is to maintain a refrigerated space at -23degc while
an ideal ericsson engine using helium as the working fluid operates between temperature limits of 550 and 3000 r and
an equimolar mixture of helium and argon gases is to be used as the working fluid in a closed-loop gas-turbine cycle