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Green Building Bible, Fourth Edition
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Heating and cooling: Rocket Heaters

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  1.  
    • CommentAuthorJohn B
    • CommentTimeAug 15th 2010
     
    I'd love to heat my house with one of these. What would be the reaction of Building Control or HETAS if I wanted one?
    http://www.youtube.com/paulwheaton12#p/u/0/_jfag47dRCs
    • CommentAuthorbiffvernon
    • CommentTimeAug 15th 2010
     
    Oh Lordy, Lordy, don't go telling anyone with a suit and clipboard. They would never understand! Just do it. Get the book from Ianto Evans http://www.rocketstoves.com/
    • CommentAuthorJohn B
    • CommentTimeAug 15th 2010
     
    I want to do things that set an example that others can follow, so doing things that break the rules defeats the object. I also want to be able to rent out accommodation, so have to stick to the rules in case I kill my tenants!
    • CommentAuthorbiffvernon
    • CommentTimeAug 16th 2010
     
    Include a carbon monoxide meter!
  5.  
    Hmmm,
    A couple of points i noticed
    (i) need very small pieces of wood
    (ii) needs constant stoking
    (iii) How long will the steelwork last ie surely the oil drum will "rust" throught pretty rapidly.
    anyway anyway anyway..............there are no free lunches
    and surely this is basically the same technology as a gasifying log burner?
    • CommentAuthorJohn B
    • CommentTimeAug 23rd 2010 edited
     
    Posted By: orangemannotHmmm,
    A couple of points i noticed
    (i) need very small pieces of wood
    (ii) needs constant stoking
    (iii) How long will the steelwork last ie surely the oil drum will "rust" throught pretty rapidly.
    anyway anyway anyway..............there are no free lunches
    and surely this is basically the same technology as a gasifying log burner?

    Those big wooden things that big logs come from also produce lots of small wood!
    It doesn't have to be an exact copy, so surely doesn't need short lived steelwork.
    Not sure about the stoking, but the idea is that it works as a masonry heater, so should retain heat for a long period. I think the video said something about keeping the house warm overnight. This is where it differs from a manufactured log burner. My idea at the moment would be to build one in an externally insulated stone house.

    So what about building regs?
  7.  
    They are basically a wood fired storage heater. We have lots of them here except here they are built of fire brick lining with either ceramic tiles or bricks on the outside and usually vertical. Built of tiles they can last for years, you take them apart periodically to replace the fire bricks. We have one bought second hand that has external tiles 150 years old. The ones we have here are quite efficient and because they are run on full throttle the burning is good (don’t use soft wood) and our chimneys using these, although checked annually, have not needed cleaning for the last 10 years.
    The essence of using them is that you fire them up on full throttle until the whole thing is hot, continue full burning until all that is left are red embers at which point you can shut the door / air vent which should shut air tight, then the heat store will release its heat to the room. If he door is not air tight a lot of heat is lost up the chimney. If the door is shut too soon then combustible gasses can collect inside which can then…….combust, usually lifting the top off or occasionally taking them apart.
    Neither the ceramic type nor the rocket stoves are foolproof to operate so I would be nervous about letting tenants a free hand in their use.
    Having seen the ytube bit I would go for the brick built version!
    Peter

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