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Heat tranfer: boundary conditions for vertical U-Type heat exchanger
Posted Feb 15, 2010, 10:40 a.m. EST 1 Reply
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I am trying to simulate vertical U-Type heat exchanger for geothermal system.
I my model I have 2 pipes witch are surrounded by grout, and the grout is surrounded by the ground. Temperature of the ground is 18[degC], booth pipes have the same velocity in different directions, the first pipe at the top has [9degC] intake and at the bottom has convective flux boundary condition. Second pipe at the top has convective flux boundary condition, but at the bottom it should be the same temperature as it is at the bottom of the first pipe.
I have no idea how to do the same temperature at the bottom of the second pipe as it is at the first pipes bottom.
Can anyone help with this?
Thanks, Mantas
Hello Mantas Valantinavicius
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and do you plan to solve for 1 pipe (down flow)....and than extend your result to next pipes?
I have done some research in this field......and had problems with finding outlet temperature.......can you help me that?