I wanted to build this heat exchanger to reclaim some of the heat that is lost up the chimney of my wood stove. I use the wood stove to heat my workshop during the winter months . I have seen heat exchanger units available in stores for around $160. Since I'm cheap, and I hate to pay money for things that I think I can build myself, I set out to create my own heat exchanger.
Step 1: Materials and Tools Used
2- 12" x 12" pieces of 19 gauge sheet metal
8- 1-1/4" diameter thin wall steel pipe pieces 11-1/4" long ( I used Galvanized top rail from chain link fence)
1- 2-1/2" diameter thin wall steel pipe 11-1/4" long ( I used Galvanized fence post)
1- 5 gallon steel bucket , the type that Tar, Asphalt roof coating or Driveway Coating come in.