Q&A Heat collector for wood stove

QandA Posted By QandA, Oct 5, 2001 at 2:20 PM

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  1. QandA

    New Member 2.
    Staff Member

    Nov 27, 2012

    Im writing to you because IÕm looking for a solution to a heating problem. We are building a new home in northern New Hampshire and are planning to heat it with Solar collectors. The heat will be captured and moved via antifreeze fluid in pipes, and stored in the earth under the basement as well as in the basement slab itself.

    I need a back up heat source for the cool, short winter days. We want to use a wood stove.

    Have you ever heard of a way to capture and move the radiant heat from a wood stove into piping? Are there any floor or wall mount radiant heat collectors which could stand the temperatures close to the stove?


    There are many ways to do this depending on how much heat you are looking to reclaim. There is one article at: https://www.hearth.com/what/woodstovedhw.html which deals with getting hot water from your wood stove and also a few question and answers at http://chi.hearth.com/search.html which deal with it.

    You have a choice of internal or external heat exchangers. There are stainless steel and other small vessels that can go inside a woodstove... and holes drilled out through the stove wall to pipe the water in and out. You can also have a heat exchanger external to the stove. Something as simple as one of those flat cast-iron or new steel radiators mounted close to the stove and painted black would soak up a lot of heat. Be sure to provide the proper pressure relief valves.

    Don't figure on getting a massive amount of heat into the water from a stove. Assuming that a stove was burning at 40,000 BTU/Hour, a fairly high rate, you would probably only get 10,000 BTU max into the water each hour.

    Link: Link to Hot Water Article
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