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House Renovations
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 03/05/2008, 21:24
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Mikey
 
Joined on 23/08/2004
Posts 173
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Gyn, not yet but i'm working on it. I've done a fair bit of research and these are ideal for heating large houses.
A friend has one without buffer tank and just needs to fill it once in morning and in the evening and it gets their very big house toasting.
Atmos seem to be very popular, you can get a pretty good deal from www.ph-renewables.co.uk
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07/05/2008, 14:32
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EcoPower
Joined on 07/05/2008
Posts 32
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Quote: We are also looking at backing that up with evacuated tube solar heating to supply the boiler with warm/hot water to start off with and that will bring the anual cost down even more.
This idea comes up frequently and unfortunately does not warrant the expenditure and is not as effective as it might seem. It is better to use solar thermal for just the domestic hot water which is efficient - at least this reduces the demand on the boiler.
The best form of heating is definitely underfloor and I would suggest electric with some form of renewable energy to supplement the grid electricity. This way, when the demand is lower during the warmer months you can still utilise the electricity elsewhere.
Underfloor can be run as low as 15 degrees to provide comfort heating andf if used in conjunction with the good old wood burning stove is very cost effective. Underfloor is suitable for all types of floor construction. The only word of caution re underfloor is that for wood the temperature must never be allowed to reach 27 degrees as the wood may become irreparably damaged - not a problem with electric systems as the thermocouples are actually fitted into the floor.
Good luck
Marc
www.ecopower.eu.com
Renewable Energy need not cost the Earth
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07/05/2008, 15:25
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powerdesal
Joined on 07/01/2006
Sharjah U.A.E
Posts 2,173
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 Mikey wrote: | Gyn, not yet but i'm working on it. I've done a fair bit of research and these are ideal for heating large houses.
A friend has one without buffer tank and just needs to fill it once in morning and in the evening and it gets their very big house toasting.
Atmos seem to be very popular, you can get a pretty good deal from www.ph-renewables.co.uk
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I am also still at the design stage but, at the moment, an Atmos 20kw unit with a 2000l heat store is looking good. Heating load is calculated at approx 16.5 kw and the balance of 3.5 kw being for DHW. The latter may be a bit too high for just two of us. Having said that, the 16.5 Kw heat load assumes all rooms are heated wheras at least two bedrooms are likely to be on frost stat for most of the winter.
The heat store unit with a second heating coil for evac solar should give DHW in summer without running the Atmos.
All heat load calcs have been done using the conventional 21 degC delta T (outside temp at -1C) and using 200mm insulation in the roof spaces.
Costs of kit would seem to be about GBP 5000 as far as I an see and the site indicates an expected season useage of approx 25m cu of wood. If, as I believe, this roughly equates to 8 stere it seems quite economical. I have just ordered 8 steres at E45 / stere. I cant imagine a winter season heating bill of E360 plus the pump power + wood burner in sitting room for "ambience" but thats what the numbers say.
Any comments from anyone will be truly appreciated.
Steve
Sharjah (but not for long ) + 50 (in France)
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7 days Ins'Allah (1 with the packers, 2 for the week end, 4 for work)( or maybe 8, or 9, or 10 or 11 or....)
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09/05/2008, 18:13
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Mikey
Joined on 23/08/2004
Posts 173
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10/05/2008, 8:59
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EcoPower
Joined on 07/05/2008
Posts 32
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A previous post referred to property insulation and this is by far the best, no doubt about it, way to improve comfort and reduce energy bills.
For those who have Oil, Gas or LPG boilers the following may be of interest.
I cannot mention any details without contravening Forum rules re advertising, but if anyone would like to PM or email me I can provide further information about a product that has previously only generally been available to the commercial market.
I will not note where you can found out more or purchase this product.
I hope that helps some and also sincerely hope that this general information is not seen as advertising.
Marc.
Post edited by a moderator to remove link
www.ecopower.eu.com
Renewable Energy need not cost the Earth
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10/05/2008, 9:19
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powerdesal
Joined on 07/01/2006
Sharjah U.A.E
Posts 2,173
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Marc,
Whilst I am sure that many of us really appreciate your input on energy matters, do you not think that you are "ever-so-slightly" advertising your own company?
Personally, I have no problem with that, but I suspect the mods (or others ) might.
Steve
Sharjah (but not for long ) + 50 (in France)
...........................................................................
7 days Ins'Allah (1 with the packers, 2 for the week end, 4 for work)( or maybe 8, or 9, or 10 or 11 or....)
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10/05/2008, 9:35
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powerdesal
Joined on 07/01/2006
Sharjah U.A.E
Posts 2,173
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As I said Geoff, I have no problem with it. There does seem to be fine line between a 'www.me' in the strap line and an overt link to a company web site.
Either way, it doesn't bother me, in fact it can be (and is) helpful on occasions.
edit: I see I was right. Luckily I got the link before it was removed.
Steve
Sharjah (but not for long ) + 50 (in France)
...........................................................................
7 days Ins'Allah (1 with the packers, 2 for the week end, 4 for work)( or maybe 8, or 9, or 10 or 11 or....)
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France Forum » Building and Re... » House Renovatio... » Re: Heating Costs
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