Which interface choose for fluid flow with heat transfer

Good day!

I would like to ask for an advice.
I wish to solve the following problem: I have a plate of a solid material with low thermal conductivity. There is a pipe with cold water inside the plate. The water flows throuth the pipe with a fixed rate and goes outside. I need to simulate the temperature field in this system.
I'm not sure which interface I should use: "Conjugate Heat Transfer" or "HT -> HT in fluids".

Thanks!

With best regars,
Irina