Nano-scale to Macro-scale

Hello COMSOLers,

I am working on a model dealing with an adsorption reaction in a porous media that generates heat, and the heat generated is then transferred to a heat transfer fluid (air). The objective of my model is to calculate the time needed for an increase of 30 degC to the temperature of the heat transfer fluid.

My model has two parts; the first part is the adsorption, for which I have followed the COMSOL tutorial on Transport and Adsorption. For the heat transfer, I am using the conjugate heat transfer module, where I am defining the the solid part, the fluid part along with the material properties etc and the generation of heat. For the generation of heat I am using a boundary heat source, which is related to the adsorption rate (variable R in Transport and Adsorption model).

The investigation I am doing concerns only one pore, which I assume to be a very small tube with a diameter of 0.8nm and length of 5nm. The problem I am dealing with right now is that I don't know how I can use the results I am getting on the nanoscale in order to see what happens on the actual geometry (11X23X27)

Thank you in advance for your help.

Giorgos