How is efficiency translated into fluid temperature in Simscape Fluids fixed displacement pump?

조회 수: 2(최근 30일)
Nick
Nick 2019년 2월 27일
답변: Juan Sagarduy 2020년 12월 3일
I am using the Simscape Fluids fixed displacement pump, with a thermal liquid. I looked through the documentation and could not find any explanation of how mechanical and volumetric efficiencies affect the fluid temperature. I am using "Input Efficiencies" block choice. When I reduce mechanical efficiency, the temperature of the outlet liquid increases, but not by as much as I would expect it to if 100% of the friction torque were added to the fluid. Is some of it assumed to be dissipated to the air? Similarly, when I reduce volumetric efficiency, the temperature increases, is this due to a fluid shearing effect? Are these equations documented anywhere?
I am working on a model where I need to account for all energy streams, so if some of the heat is assumed to go somewhere other than the thermal liquid, I need to account for it separately.

답변(1개)

Juan Sagarduy
Juan Sagarduy 2020년 12월 3일
Hi Nick
The documentation explains well the equations behind the fixed displacement pump TL and losses. See the link below:
https://se.mathworks.com/help/physmod/hydro/ref/fixeddisplacementpumptl.html
Br Juan

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