Engineering, 03.05.2021 21:10 zamirareece17
A gas refrigeration cycle with a pressure ratio of 4 uses helium as the working fluid. The temperature of the helium is -6C at the compressor inlet and 50C at the turbine inlet. Assuming isentropic efficiencies of 0.85 for both turbine and the compressor, determine (a) the minimum temperature in the cycle, (b) the coefficient of performance, and (c) the mass flow rate of the helium for a refrigeration rate of 25kW.
Answers: 3
Another question on Engineering
Engineering, 03.07.2019 19:30
When using the ohmmeter function of a digital multimeter, the leads are placed in what position relative to the component being tested? a. parallel b. control c. series d. line
Answers: 3
Engineering, 04.07.2019 18:20
Select any two (2) areas of applications of chain-drive. (clo4) a)-permanent lubrication necessary b)-hydraulic forklift truck operation c)-rigging and heavy moving materials d)-relatively high maintenance costs e)-costlier than belt drives
Answers: 2
Engineering, 04.07.2019 19:10
Estimate the change in specific internal energy au and specific enthalpy h from inlet to outlet for ethylene glycol (a liquid) flowing through each of the following devices: (a) a heat exchanger where the glycol temperature increases from 20 °c to 80 °c; (b) a pump operating at about 25 °c and increasing the glycol pressure from 100 kpa to 8 mpa.
Answers: 2
Engineering, 04.07.2019 19:20
Afan that can provide air speeds up to 60 m/s is to be used in a low-speed wind tunnel with atmospheric air at 35 c. if one wishes to use the wind tunnel to study flat-plate boundary layer behavior up to reynolds numbes of re 10, what is the minimum plate length that should be used? at what distance from the leading edge would transition occur if the critical reynolds nurnber were rer,e = 5 × 105?
Answers: 2
You know the right answer?
A gas refrigeration cycle with a pressure ratio of 4 uses helium as the working fluid. The temperatu...
Questions
Mathematics, 14.04.2021 19:50
Mathematics, 14.04.2021 19:50
Mathematics, 14.04.2021 19:50
Social Studies, 14.04.2021 19:50
Physics, 14.04.2021 19:50
Medicine, 14.04.2021 19:50
Mathematics, 14.04.2021 19:50
Mathematics, 14.04.2021 19:50
English, 14.04.2021 19:50
Mathematics, 14.04.2021 19:50
