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Consider a Carnot heat engine and a refrigerator operating between the same two thermal energy reservoirs. If the thermal efficiency of the heat engine is 0.80, the COP of the refrigerator is?
a thermocouple located at the center of a long circular duct with a 10cm diameter has a spherical bead of 2mm diameter.
r134a is condensed at a constant temperature of 30degc as it flows through the condenser of a refrigerator by rejecting
a gaseous mixture consisting of 0.75 kmol of hydrogen and 0.25 kmol of nitrogen occupies 0.085 m3 at 25degreec
a fluid flows through an adiabatic device. at one end the velocity is 30 ms h 320 kjkg and s 0.695 kjkg k and at the
a mass of 0.20 kg of saturated refrigerant-134a is contained in a piston-cylinder device at 200kpa. initially 75 of the
one hundred circumferential aluminum fins of rectangular profile are mounted on a 1.0-m tube having a diameter of 2.5
in a 150 mw steam turbine unit operating on an enhanced rankine cycle steam is delivered from the boiler to the high
consider a non-ideal vapor-compression cycle where refrigerant 134a flows at a rate of 0.05 kgs. the refrigerant enters
water at 24 degree c flows at 0.8 ms in a smooth 1.5 cm i.d. tube that is kept at 27 degree c. the system is extremely
a boiler is designed to convert water at 1mpa 50 degree c to a superheated vapor at 1mpa 500 degree c a determine the
Analyse the operational characteristics of the current system / component available in the market and future systems yet to come into production. Analyse the effect of the system on the environment and its sustainability.
draw the shear and bending-moment diagrams for the beam and loading shown and determine the maximum normal stress due to bending.
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