Engineering, 06.05.2020 02:43 jaychavez1926
Refrigerant 134a is the working fluid in an ideal vapor-compression refrigeration cycle that communicates thermally with a cold region at -8 degree C and a warm region at 30 degree C. Saturated vapor enters the compressor at -8 degree C and saturated liquid leaves the condenser at 30 degree C. The mass flow rate of the refrigerant is 0.08 kg/s. Determine (a) the compressor power, in kW (20 points) (b) the refrigeration capacity, in tons (20 points) (c) the coefficient of performance (10 points)
Answers: 3
Engineering, 03.07.2019 14:10
If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.
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Engineering, 04.07.2019 18:10
Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false
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Engineering, 04.07.2019 18:10
You are making beer. the first step is filling the glass carboy with the liquid wort. the internal diameter of the carboy is 15 in., and you wish to fill it up to a depth of 2 ft. if your wort is drawn from the kettle using a siphon process that flows at 3 gpm, how long will it take to fill?
Answers: 1
Engineering, 04.07.2019 18:10
Which of the following ziegler nichols tuning methods the response of the controller to a step input should exhibit an s-shaped curve? a)-open loop mode b)-closed loop mode c)-both modes (open & closed) d)-none of the modes (open & closed)
Answers: 3
Refrigerant 134a is the working fluid in an ideal vapor-compression refrigeration cycle that communi...
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