Forum: Renovations & New Construction
09-25-14, 04:49 AM
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Replies: 80
Views: 53,025
Radiant barriers aren't that useful on upward...
Radiant barriers aren't that useful on upward facing horizontal surfaces, as over time they get dirty and stop working. Also their contribution is pretty minimal anyway.
In A/C's proposed sketch,...
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Forum: Renovations & New Construction
09-25-14, 04:44 AM
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Replies: 80
Views: 53,025
I don't think there's any problem with using...
I don't think there's any problem with using fibre glass, so long as it's kept pretty warm. i.e. the lowest PIR board needs to provide (rule of thumb) approx 50% of the insulation value, so that the...
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Forum: Renovations & New Construction
09-24-14, 04:31 AM
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Replies: 80
Views: 53,025
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Forum: Conservation
01-06-13, 01:26 PM
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Replies: 100
Views: 160,551
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Forum: Appliances & Gadgets
01-04-13, 03:51 PM
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Replies: 25
Views: 24,313
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Forum: Appliances & Gadgets
01-04-13, 01:59 PM
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Replies: 25
Views: 24,313
Did you look at
Home Climate Control...
Did you look at
Home Climate Control (http://www.homeclimatecontrol.com/)
at all for the software end of things?
It's algorithms and design look pretty good, and I'm planning on extending it...
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Forum: Introductions
01-04-13, 10:48 AM
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Replies: 5
Views: 4,918
If you work out how much energy you can shift...
If you work out how much energy you can shift using air (use specific heat capacity of air and heat loss from your target room to work out how much air you need to move at whatever temp differential...
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Forum: Conservation
12-17-12, 06:36 AM
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Replies: 575
Views: 1,285,011
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Forum: Conservation
12-16-12, 12:53 PM
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Replies: 575
Views: 1,285,011
For comparison, those mixed flow second hand...
For comparison, those mixed flow second hand DV6224 fans which I mentioned (available at 25 euro or so each - I saw a set of four fans on US eBay for $30 I think), do the following at max speed:
...
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Forum: Conservation
12-15-12, 02:48 PM
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Replies: 575
Views: 1,285,011
Any idea what sort of COP the de-humidifiers...
Any idea what sort of COP the de-humidifiers achieve? Looking at this table:
http://ecorenovator.org/forum/conservation/891-diy-ventilation-heat-exchanger-14.html
The efficiency of the best...
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Forum: Conservation
12-15-12, 01:19 PM
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Replies: 575
Views: 1,285,011
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Forum: Lighting
12-15-12, 11:35 AM
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Replies: 29
Views: 22,622
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Forum: Conservation
12-14-12, 02:14 PM
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Replies: 575
Views: 1,285,011
Most speed controllable fans seem to go down to...
Most speed controllable fans seem to go down to 10%. If you're shopping for cheap EC (electronically commutated == high efficiency, long life) ebm papst fans, there seem to be various available some...
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Forum: Lighting
12-14-12, 12:29 PM
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Replies: 29
Views: 22,622
In Britain, it'd be allowable to install an...
In Britain, it'd be allowable to install an intumescent "hood" over that sort of fitting.
I'd post a link, but the forum won't allow me to because I'm a new user...
Google for Intumescent...
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Forum: Conservation
12-14-12, 12:21 PM
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Replies: 575
Views: 1,285,011
They will a bit, but they'll also increase the...
They will a bit, but they'll also increase the cost (for a given volume of exchanger) and embodied energy. I believe that the limiting factor is the conductivity of the air, so an important thing is...
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Forum: Conservation
12-14-12, 11:58 AM
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Replies: 575
Views: 1,285,011
So, as far as I can see, this problem can be...
So, as far as I can see, this problem can be split broadly into two different areas:
1. Heat Exchanger (plus housing, condensate drainage, duct ports etc.).
2. Fans
3. Control system (fan...
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Forum: Conservation
12-14-12, 10:24 AM
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Replies: 575
Views: 1,285,011
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