Welcome! Here are the website rules, as well as some tips for using this forum.
If you've found help here, check back in to let us know how everything worked out.
It's a great way to thank those who helped you.
I have an old shell and tube heat exchanger laying around, and am contemplating using it as a solar heater for my pool. I get plenty of sun, the bundle is a ubend, 2 pass, 30 tubes about 40 inches long...so a decent size. I'm thinking if I paint the shell Matt black to absorb more heat from the sun it would heat up the air in the shell around the tubes to get a few free degrees into the pool...what do you guys think?