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Heat transfer in fluid with Super Critical CO2
Posted Jun 26, 2022, 6:07 a.m. EDT Fluid & Heat, Heat Transfer, Physics Interfaces Version 6.0 0 Replies
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Hi everyone,
For my research project I have managed to build a multiphysics model coupling heat transfer in solids and heat transfer in pipes to simulate deep geothermal energy production. The model currently uses water as heat transfer fluid, however I want to move on to super critical carbon dioxide (CO2). C02 behaves as a supercritical fluid above its critical temperature (304.13 K, 31.0 °C, 87.8 °F)[1] and critical pressure (7.3773 MPa, 72.8 atm, 1,070 psi, 73.8 bar), and is ideal for heat transfer compared to water.
Comsol does have CO2 as an option for heat transfer fluid. I have also changed the initial conditions for the model so that they match critical temperature and critical pressure. However, the model doesn't seem to work as outlet temperature does not change - meaning heat transfer in pipe module became broken with the new heat transfer fluid.
I would love to have some pointers from someone who has done something similar before. Thanks in advance!
Hello Xuan Hieu Nghiem
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