Well, I reckon that really is so much p1ss and wind...
Originally Posted by
Waterways
If you read what I wrote I said superinsulation and air-tightness is the way and passive solar third. Passive solar does work in the UK and the sun shines on every house...
Your superinsulation isn?t. SIP panels have a ?U-value? of 0.4 W/m2 K in laboratory conditions and without windows. UK Building Regulations require that wall construction gets DOWN to 0.35 W/m2 K ie., SIP panels may be a revelation to the energy-profligate US market but they don't even satisfy the current UK building regulations.
You claim houses made of these materials don?t need heating and so show that you don?t understand the principles of insulating material ie., they hold up heat loss just long enough for the external daytime heating cycle to take over from the night time chill. You have to put heat in in the first place!
Your air tightness doesn?t work with your ?superinsulation? which requires mechanical ventilation (you should read the stuff you swallow wholesale) and the sun don?t shine so much in the UK and even if it shone all day, the day ain?t so long in the winter, in case you hadn?t noticed.
Originally Posted by
Waterways
They do not look at the Deveci link I gave. If they are standard for new homes and improvements then it makes an impact.
Probably because you wouldn?t be bothered to introduce the material, draw your own original conclusions or get people interested in it. Perhaps you didn?t understand it yourself.
Originally Posted by
Waterways
Ventilation can be controlled. Look at the Canadian 2000 standard and the German Passiv Haus. Canadians say "Build tight, ventilate right".
In these very cold conditions it?s probably quite wise to close the door (and hermetically seal every crack and crevice) but it comes at an environmental cost (of mechanical ventilation/heat recovery/loss and poor air quality or both.
Originally Posted by
Waterways
Timber framed flats up to 5 floors high are being built in London. They are so well insulated no one ever uses the heating systems.
Yes and this adds substantially to the cost of an otherwise 'frameless' construction and again no heat in means... for god?s sake, do you imagine the insulation heats the house up? Jeez...
Originally Posted by
Waterways
Again, none of this put any cost on house. SIP panels? Lay the base and the house is weatherproof in a few days and the fitting out can be done at any time of the year
Energy saving measures cost more. Go buy some! Do you seriously think the market is so competitive that builders will cut their margins to put it in when there is almost zero appreciation of the benefit?
A single storey house constructed in SIP panels can be put up very quickly. So? And why would you wait to fit it out? What for???
Originally Posted by
Waterways
That is incorrect.Denser cities are not necessarily more carbon efficient if new homes in suburbs (the villages) are made of SIPs and prime transport is electric metro using supercapacitor brake regen.
The point, made quite adequately, is that houses that are joined up share walls and therefore lose less heat. Heat loss occurs across a gradient or difference in temperature. Two houses at an equal temperature lose no heat to each other through a party wall. Similarly a first floor flat is ?insulated? by both a second floor flat above and a ground floor flat below. This is a denser configuration than a single storey house (and loses heat through every surface). Now, think about this carefully before you come back with more cr*p.
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SIPs, yes we?ve talked about SIPs and I am sure brake regen is lovely but it can apply wherever
Originally Posted by
Waterways
Read above. Carbon footprint of cities is over stated and there is no need to cram us all in like battery hens while leaving the countryside empty so a chosen few remain billionaires at our expense. Massive reductions can be done in industry and pushing freight to electric trains, coastal ships, etc.
Says who? You? and nobody?s talking about battery hens. We?re talking about putting people into sustainable communities at established densities on vast tracts of EMPTY and derelict land in our inner cities.
Originally Posted by
Waterways
You didn't read what I wrote...It is a massive success.
Unfortunately, I most certainly did.
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