Answers: 2
Physics, 22.06.2019 03:30, zahradawkins2007
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 16:30, Nerdylearner8639
Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?
Answers: 2
Physics, 23.06.2019 05:20, s2000damian
How to know which equation of motion to use where?explain
Answers: 1
The major intracellular positively charged electrolyte is...
Mathematics, 26.04.2021 22:30
History, 26.04.2021 22:30
Mathematics, 26.04.2021 22:30
History, 26.04.2021 22:30
Mathematics, 26.04.2021 22:30
Mathematics, 26.04.2021 22:30
Spanish, 26.04.2021 22:30