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Housing - Renovation: recycling warm air

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  1.  
    • CommentAuthorgeoffnet
    • CommentTimeMay 29th 2007
     
    We virtually live in a kitchen with a high (11ft6") ceiling. I'm fed up with forking out to heat the light bulbs. Any suggestions for a warm air recycling system that won't look a disaster, make a lot of noise? I'm sorry if this is a well trodden path, but I can't find a reference to it in past discussions.
    • CommentAuthorGBP-Keith
    • CommentTimeMay 29th 2007
     
    Ceiling fans can help to push the warm air back down (called de-stratifying) but you will need to watch the energy consumption of the fan and choose carefully.
    • CommentAuthorgeoffnet
    • CommentTimeMay 29th 2007
     
    I was wondering whether there was a simple (ish) method of sucking the air down through (for instance) a duct to floor level. I have seen references to it without enough detail to replicate anything. Obviously it would use electricity but the trade off against the gas bill for the radiators would need to compensate.
  4.  
    Would you be better with a radiant heating system which warms objects not the air? I understand underfloor heating works this way. Hot air rises - ain't much you can do about it.
  5.  
    Geoff,
    Xpelair do some little heat recovery and ventilation units. Some of them have DC powered fans ideal for renewables.
    By combining your kitchen/bathroom ventilation extracts you can recycle the heat and also remove the moisture.
    You will need to fit a condensate line too.
    Of course this needs some voids to hide the ducts for a multiroom package, but you may be able to use a single air path or you can just use the inline units.
    There are many more manufacturers and they do work very well.
    If you cook a lot you can nearly heat your house this way!!
    good luck
    thamesrenewables.com
    • CommentAuthorken davis
    • CommentTimeMay 31st 2007
     
    seems to obvious but why not lower the ceiling? if you make a real feature of it, perhaps vaulted it will enhance the space and improve air circulation. make a framework up in timber, leave plasterboard against the wall until it reaches approx the curve you need (occassional light water spraying can help). this also gives a void to stuff with insulation and can have some (low energy) recessed lights set in to it. void could accommodate heat recovery system if you wished but best to avoid 'systems' if possible .

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