From the top of my head, COMSOL provides modules enabling you to simulate all sorts of capillary flow/heat conduction and/or environmental influences in a greenhouse environment.

Might not be the best commercial solution for your specific problem, but since I am not an expert in this field my knowledge about viable alternatives is quite limited. maybe someone else can help you further.

I have modeled a tube-shell heat exchanger. I wrote code on my own

Comsol looks best to serve your purpose, unless you want to write your own code.