Answer: Rotary - because it has to
Around in a circle
Explanation:
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Answer:
Refrigerant R-134a is to be cooled by waterin a condenser.The refrigerant enters thecondenser with a mass flow rate of 6 kg/minat 1 MPa and 70 C and exits at 35 C. The cool-ing water enters at 300 kPa and 15 C andleaves at 25 C. Neglecting pressure drops,determine a) the required mass flow rate ofthe cooling water, and b) the heat transferrate from the refrigerant to the water.SolutionFirst consider the condenser as the control volume. The process is steady,adiabatic and no work is done. Thus over any time intervalΔt,ΔEΔt=0and thusXin˙E=Xout˙Ewhere˙E=˙m h+12V2+gz650:351 Thermodynamics·Prof. Doyle Knight37
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Answer:
16
Explanation:
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Answer:
80 kW; 11 kW; 8 kW; 0.6
Explanation:
Part 1
Isentropic turbine efficiency:
Part 2
Coefficient of performance COP is defined by:
Part 3
(a)
Energy balance for a refrigeration cycle gives:
(b)
