Steady Flow Systems - Mixing Chambers & Heat Exchangers | Thermodynamics | (Solved Examples)

Learn about what mixing chambers and heat exchangers are. We cover the energy balance equations needed for each steady flow system and we also solve a few questions step by step.
What are steady flow systems?: • Steady Flow Systems - ...
Pure Substances and Property Tables: • Pure Substances and Pr...
Ideal Gas Law: • The Ideal Gas Equation...
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Mixing Chambers (00:00)
Heat Exchangers (01:42)
Liquid water at 300 kPa and 20°C is heated in a chamber (05:20)
A stream of refrigerant-134a at 1 MPa and 20°C is mixed (08:07)
A thin walled double-pipe counter-flow heat exchanger is used (11:23)
Refrigerant-134a at 1 MPa and 90°C is to be cooled to 1 MPa (13:25)
Books used:
📘Çengel Yunus A. and M. A. Boles, Thermodynamics: an engineering approach. New York, NY: McGraw-Hill Education, 2016.
📘C. Borgnakke and R. E. Sonntag, Fundamentals of thermodynamics. Hoboken, NJ: Wiley, 2019.
#SteadyFlowSystems #MixingChambers #heatexchangers #thermodynamics

[@LouiDude]

Thanks for your videos! It helped my understandings alot. Can u please give the link of the entalphy tables shown in this video? Would be very helpful.

[@QuestionSolutions]

You're very welcome. The enthalpy tables can be found at the end of your textbook :)

[@lycanclawz918]

Amazing videos 💫👌

[@QuestionSolutions]

Thank you very much!

[@user-oy7ut2dn7m]

i have the question for first example
why is the h3 looking for the value by saturated water table
how do you know the outlet is the water ?

[@QuestionSolutions]

Please give me a timestamp so I know where to look and I can help you better, thanks!

[@affanzakir6015]

Sir does order matters for example if we Take the mass flow rate of refrigerant=m1 and for Air=m2 for inlet ?

[@QuestionSolutions]

Please give me a timestamp so I know where to look. Many thanks!

[@narendradc2402]

Great videos. However, at 10:30, you have taken the pressure of outlet same as pressure inlet 1000KPa. is that always valid. Can we take outlet pressure same as inlet pressure?

[@QuestionSolutions]

In most cases, in adiabatic mixing chambers, the pressure is constant in the inlets and outlet. It will say otherwise in a question if there is an exception.

[@DASmallWorlds]

Pardon me if it's obvious, but for the first question, how did you know the output was a saturated liquid (i.e. quality of 0)? I assume P3=>300KPa therefore above the saturation temperature at 60 degrees Celsius and thus a saturated liquid so you can use 25KPa?

[@QuestionSolutions]

Could you kindly provide me with a timestamp so I know where to look? Many thanks!

[@DASmallWorlds]

@@QuestionSolutions 7:42

[@QuestionSolutions]

@@DASmallWorlds Yes, that's correct!

[@RyanLimZW]

How do u even know which table to refer to? Ive watched the properties diagram video multiple and i still dont get why some is superheated or saturated when its not stated in the question

[@QuestionSolutions]

So the only answer I can give you is, you may have watched the video on property tables but you haven't understood it. Unfortunately, it is absolutely fundamental that you take the time and watch it over and over until you understand it. If it isn't helping, and reading the textbook doesn't help either, I highly encourage you to go and speak with your professor or TA. It is a must that you understand and have the ability to distinguish superheated substances, compressed liquids and more. Hopefully, you are referring to this video? th-cam.com/video/rKbjRG4Y-HM/w-d-xo.html
I explain how to determine what is what, and go through a few examples. So please take the time to view it and follow along with the examples.