From a thermodynamics perspective, I realize that a TEC-based fermentation chamber is not the most efficient type of cooler due to very inefficient heat transfer, but, alas, I want to build one as I have most of the parts lying around. I haven't done the all the math, but I believe that I can achieve acceptable cooling for lagering using a 48W TEC as long as I can efficiently dissipate the waste heat from the hot side of the TEC.
I have read many posts, articles, etc. over the years, but haven't kept the references to all of them and am now wanting to get started. My question is: What are some good sources for plans, including parts lists, dimensions of materials and anything else that might be useful for a DIY-builder?
Here's what I have on hand that appears to be the most common set of components for a TEC-based fermentation chamber from what I've read:
- 12V, 10A power supply
- Digital TEC thermostat
- 12V, 4A (48W) Peltier with dual heatsinks and fans
- Foam insulating board
- Plywood for external surfaces
- Plexiglass for TEC mounting
What I'm looking for are plans or projects that utilize those things or similar items that can be used in conjunction with them. I would be really interested in the use of pumps and or radiators for heat exchanger waste dissipation.
Probably as important would be feedback from anyone who has built one and some of their experiences related to things that worked and things that they might have done differently.