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, 22.06.2019 15:30
What is the increase in density of a medium due to wave travel?
Answers: 2
Physics, 22.06.2019 23:30
The photo above shows oil and vinegar in a pitcher. the top make a claim about about the density of the vinegar compared to the density of the oil summarize the evidence to support the claim and explain your reasoning
Answers: 3
Physics, 23.06.2019 11:30
Which two statements are true about a system? a system is a group of objects analyzed as one unit. energy that moves across system boundaries is conserved there's only one way to define the boundaries of a system all systems are made by humans
Answers: 3
Why is a crop top a thing...
Mathematics, 17.02.2021 01:10
Mathematics, 17.02.2021 01:10
Mathematics, 17.02.2021 01:10
Mathematics, 17.02.2021 01:10
Mathematics, 17.02.2021 01:10
Chemistry, 17.02.2021 01:10
Mathematics, 17.02.2021 01:10
Health, 17.02.2021 01:10