Engineering, 08.02.2021 18:40 sistersquad
Air enters an adiabatic compressor at 100 kPa and 17 ºC at a rate of 2.4 m^3/s, and itexits at 257 ºC. The compressor has an isentropic efficiency of 84 percent. Neglecting the changes in kinetic and potential energies, determine the exit pressure of the air and the power required to drive the compressor. Use constant specific heatsfor air (Cp=1.005 kJ/kgK, γ=1.4, R =0.287 kJ/kgK)
Answers: 3
Engineering, 04.07.2019 18:10
Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?
Answers: 1
Engineering, 04.07.2019 18:10
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Engineering, 04.07.2019 18:10
Which of the following controllers anticipates the future from the slope of errors over time? a)-proportional b)-on/off c)-integral d)-derivative.
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Engineering, 04.07.2019 18:20
Wiy doeres rere okhn a pump whon working betwon the same pressure range?
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Air enters an adiabatic compressor at 100 kPa and 17 ºC at a rate of 2.4 m^3/s, and itexits at 257 º...
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