Answers: 2
Physics, 22.06.2019 03:30
As part of an industrial process, air as an ideal gas at 10 bar, 400k expands at steady state through a valve to a pressure of 4 bar. the mass flow rate of air is 0.5 kg/s. the air then passes through a heat exchanger where it is cooled to a temperature of 295k with negligible change in pressure. the valve can be modeled as a throttling process, and kinetic and potential energy effects can be neglected. (a) for a control volume enclosing the valve and heat exchanger and enough of the local surroundings that the heat transfer occurs at the ambient temperature of 295 k, determine the rate of entropy production, in kw/k. (b) if the expansion valve were replaced by an adiabatic turbine operating isentropically, what would be the entropy production? compare the results of parts (a) and (b) and discuss.
Answers: 3
Physics, 23.06.2019 00:30
Why is no-till farming more sustainable than many traditional methods of farming
Answers: 3
Physics, 23.06.2019 02:30
Anthropology is the study of the effects of disease on the body, while forensic anthropology studies the disease of crime a.) true b.) false
Answers: 2
Physics, 23.06.2019 07:00
The minute hand of a clock is 7cm long. calculate the displacement and distance covered by it from 8 am to 8.30 am pls answer fast i will surely mark as brainliest fast fast fast
Answers: 2
1. if the mass of something increases, it is harder to get it to move. this means the force required...
History, 26.10.2019 14:43
Mathematics, 26.10.2019 14:43
History, 26.10.2019 14:43
Mathematics, 26.10.2019 14:43
Biology, 26.10.2019 14:43
Social Studies, 26.10.2019 14:43
Mathematics, 26.10.2019 14:43
English, 26.10.2019 14:43
Mathematics, 26.10.2019 14:43
History, 26.10.2019 14:43
Mathematics, 26.10.2019 14:43
Arts, 26.10.2019 14:43
Mathematics, 26.10.2019 14:43