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Heat Rate obtained higher than input
Posted 2017年11月29日 GMT-5 23:35 Structural & Acoustics, Fluid & Heat, Heat Transfer Version 5.3 0 Replies
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Hi everyone, I am solving a coupled fluid flow and heat transfer problem. The conditions are as follows: I have water flowing in with a velocity of 0.01m/s at 0.5LPM flow (velocity is calculated according to dimensions). Boundary heat of 50Watts is applied. Theoretically if we solve this, the temperature rise should be 1.44degC/K. Solving this 3D problem gives me a temperature rise of 1.549, which may or maynot be acceptible. However, when I back calculate for the total heat input, from the mass flow and heat capacity values from the results section, I get a total heat input of 52.8W. How could the heat input higher than the one applied. I would like to know the issue with analysis.
Hello Sai Phani Kiran Hota
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