Simulatneous temperature distribution...!

Dear Comsol Users,

I am willing to come over to you again, this time with some questions I would like to be enlighted.
I've built a 3D heat exchanger (coil) inside a material (cylinder) and with Comsol, I would like to figure out the temperature distribution in the coil and on the material (cylinder). For this purpose i used "conjugate heat transfer" thinking that could give the both temperature distribution. Unfortunately, I only have velocity/pressure and temperature distribution
of the fluid inside the coil and nothing regarding the material...!!!!

- So I ask to you which other physics should I apply or did I used the previous module in the wrong way?
- What can I do to have the temperature distribution in the cylinder?
- Which physics moduls should I apply together in order to evaluate both fluid and maerial?
- Please, how to evaluate then the heat transfer coefficient?

Thanks in advance for your replies and look forward to hear from you guys.

--
A. Fopah Lele