Heat Exchanger????

[BurnIt0017]

Greetings, after two days of testing my idea of using a stainless steel elbow as a heat exchanger and blowing the hot air into the shop does not work. On the plus side the gravity feed pellet burner works very well. I did find that considerable heat is radiating from the top of the metal box housing the pellet burner. I am planning to add a plenum to the top of the housing and vent that into shop, hopefully this will recover more heat. If anyone has any ideas how I can improve heat recovery and transfer that heat into the shop please let me know. Best regards

http://www.youtube.com/watch?v=epGDmJciN0U

http://www.youtube.com/watch?v=epGDmJciN0U

[boneh3ad]

What is it you are trying to do? You seem to assume we have prior knowledge of your device and goals.

[BurnIt0017]

Greetings, I created a gravity feed pellet burner. The pellet burner works very well. It has a 8 hour unattended burn time. My challenge now is to recover as much heat from the pellet burner and transfer that heat into the building. My first attempt using a stainless elbow positioned over the flame to heat the air inside the vent has failed. Basically the project is to have a fire box outside the building and then try to recover as heat as possible and transfer that heat to inside the building. I am looking for ideas that are low cost and easy to fabricate. I found some videos on youtube showing heat recovery systems. If anyone has any other ideas please let me know.
Best regards.




Videos of my project:
http://www.youtube.com/watch?v=HTUxarUvb2E

http://www.youtube.com/watch?v=nfoDyKCA3xs