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Outlet Stream Temperature of an Adiabatic Mixer

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Streams of air and water vapor are mixed adiabatically. Both streams are at a pressure of 1 atm. You can set the values of the molar flow rate and temperature of the two streams.

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This Demonstration computes the outlet stream's temperature using the energy balance equation for nonreactive systems: .

The specific enthalpies of air and water are computed using the temperature-dependent expressions of the constant-pressure heat capacities given in [1, Appendix B2]. In addition, we chose these reference states: air (gas) and water (vapor) both at 25 °C and 1 atm.

It is straightforward to extend this calculation to a larger number of streams and/or components.

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Contributed by: Housam Binous and Ahmed Bellagi (September 2016)
Open content licensed under CC BY-NC-SA

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Reference

[1] R. M. Felder and R. W. Rousseau, Elementary Principles of Chemical Processes, 3rd ed., Hoboken, NJ: Wiley, 2005.

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