I simulated ground coupled to heat exchanger with Ansys fluent and I want to calculate the mean thermal energy (KWh) transferred to the heat exchanger from the soil.
Can't you simply integrate the heat flux density on the interface between the heat exchanger and the soil?
Thank you Mr.Jörg Leicher for your reply.
I tried to calculate the heat flux on the interface between the heat exchanger and the soil. I used the coupled wall command between the pipe and soil.but the results give me always 0 W in the interface (Soil/heat exchanger and Heat exchanger/fluid).
But do you see an increase in temperature in the heat exchanger? If so, I guess you're integrating over "both sides" of the interface, so that the ingoing and the outgoing heat flux add up to zero.
If you have a water or gas flow through the heat exchanger, you could also simply calculate the energy input into the fluid via Q=massflow*Cp*deltaT.
- Badges
- Science topic