Answers: 3
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 04:00
Which terms describe the purpose of antennas on devices that use radio waves? transmit and receivemodify and amplifyamplify and receivemodify and transmit
Answers: 3
Physics, 22.06.2019 06:00
What are atoms of the same element with varying number of neutrons
Answers: 3
Physics, 22.06.2019 07:30
Choose all the answers that apply. our solar system: is in a spiral galaxy no longer includes pluto is made mostly of empty space is in the andromeda galaxy is the only known system that supports life
Answers: 3
How can we reduce friction...
English, 15.09.2020 01:01
Mathematics, 15.09.2020 01:01
Mathematics, 15.09.2020 01:01
Mathematics, 15.09.2020 01:01
English, 15.09.2020 01:01
Mathematics, 15.09.2020 01:01
Spanish, 15.09.2020 01:01
Mathematics, 15.09.2020 01:01
Mathematics, 15.09.2020 01:01
Mathematics, 15.09.2020 01:01
Mathematics, 15.09.2020 01:01
Mathematics, 15.09.2020 01:01
Mathematics, 15.09.2020 01:01
English, 15.09.2020 01:01
Mathematics, 15.09.2020 01:01
Social Studies, 15.09.2020 01:01
History, 15.09.2020 01:01
Chemistry, 15.09.2020 01:01
Mathematics, 15.09.2020 01:01
English, 15.09.2020 01:01