Forum: Renovations & New Construction
03-31-22, 08:48 PM
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Replies: 10
Views: 13,458
I must disagree with berniebenz. Any material...
I must disagree with berniebenz. Any material that is a good reflector of thermal radiation is automatically a very poor emitter of it as well. A barrier that has the reflective side facing away...
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Forum: Renovations & New Construction
09-18-16, 10:39 PM
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Replies: 30
Views: 16,761
Hi Steve,
The benefits that you mention for...
Hi Steve,
The benefits that you mention for radiant floors apply at least equally for ceilings. You say that the floor option makes sense as you were going to a concrete floor anyway. Since you...
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Forum: Renovations & New Construction
09-18-16, 03:40 PM
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Replies: 30
Views: 16,761
It is claimed that "Luxury" vinyl is pet...
It is claimed that "Luxury" vinyl is pet friendly. It has low conductivity compared with other hard surfaces, so it might feel a little less cold if you decide to go without sub-floor heat. Still...
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Forum: Renovations & New Construction
10-01-14, 08:08 PM
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Replies: 27
Views: 13,063
Air stratification and ceiling radiant heat
Hi AC, This is a bit late, I just noticed this thread. My 2 cents worth:
The temperature of the air in contact with a flat ceiling radiator will have virtually no effect on the heat output of the...
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Forum: Renovations & New Construction
09-28-14, 06:52 AM
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Replies: 80
Views: 42,297
Reflective foil insulation
This web page may be of interest.
Radiant Barriers :: Bubble Foil Insulation :: Reflective Insulation (http://www.healthyheating.com/Page%2055/Page_55_o_bldg_sys.htm#.VCfvXfmSxLA)
Seem as if...
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Forum: Renovations & New Construction
09-27-14, 11:18 PM
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Replies: 80
Views: 42,297
Air Gap over foil
Originally Posted by AC_Hacker
I'm pretty sure that you need an air gap between the radiating surface and the reflective material. I've seen recommendations of 1/2 inch to 1 inch. But the...
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Forum: Renovations & New Construction
09-27-14, 06:31 PM
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Replies: 80
Views: 42,297
Perforated foil
Not Icelandic, although some of my ancestors do figure in the Orkneyinga Saga. What’s unlucky about being Icelandic anyway? The fact that their ancestors made it across the far North Atlantic in...
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Forum: Renovations & New Construction
09-26-14, 03:55 PM
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Replies: 80
Views: 42,297
Conditioned crawl-space a better idea?
The info in this thread is really good. However, there is another factor that nobody has mentioned. Maybe we are unlucky, or just klutzes, but over the decades we have had several “indoor floods”. ...
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Forum: Appliances & Gadgets
02-09-13, 09:40 AM
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Replies: 25
Views: 20,462
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Forum: Renovations & New Construction
01-07-13, 08:05 PM
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Replies: 21
Views: 16,337
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Forum: Geothermal & Heat Pumps
01-07-13, 07:55 PM
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Replies: 41
Views: 36,312
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Forum: Renovations & New Construction
01-07-13, 05:42 PM
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Replies: 21
Views: 16,337
Having now reread the post on insulation, I'm...
Having now reread the post on insulation, I'm properly embarrassed. Of course you need to insulate pipes where they might freeze, hot or cold, plastic or copper. My excuse is I'm now in a climate...
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Forum: Renovations & New Construction
01-07-13, 04:57 PM
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Replies: 21
Views: 16,337
I've just replumbed my new-old house with...
I've just replumbed my new-old house with small-diameter plastic piping. Longest pipe run from the central in-line condensing gas water heater is about 12 metres (40 feet). I just completed the...
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Forum: Solar Heating
06-09-12, 04:31 PM
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Replies: 67
Views: 45,477
Hi Gary,
Thanks for the very interesting...
Hi Gary,
Thanks for the very interesting link. BuildItSolar is a jewel.
You note that the "other Gary" has built an exceedingly robust timber structure. So the reduced costs of the lining must...
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Forum: Solar Heating
06-08-12, 08:32 PM
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Replies: 67
Views: 45,477
Hi Gary,
I certainly would go for EDPM, if I...
Hi Gary,
I certainly would go for EDPM, if I can get it, when I finally finish
enough of my other projects to get onto the heating. It's the paint on type of liner that I was questioning.
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Forum: Solar Heating
06-08-12, 03:30 PM
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Replies: 67
Views: 45,477
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Forum: Solar Heating
06-07-12, 05:57 PM
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Replies: 67
Views: 45,477
Hi A C Hacker,
The problem of putting the...
Hi A C Hacker,
The problem of putting the insulation outside the wood is that the wood will be at elevated temperatures for very long periods. It is considered undesirable to have structural...
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Forum: Solar Heating
06-07-12, 05:49 PM
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Replies: 67
Views: 45,477
I should Google first. see here:
Pump and...
I should Google first. see here:
Pump and Pipe Sizing for a Solar Water or Space Heating System (http://www.builditsolar.com/Projects/SpaceHeating/PipeSizing/PipeSizing.htm)
Quoting from that...
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Forum: Solar Heating
06-07-12, 05:26 PM
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Replies: 67
Views: 45,477
Hi Daox, Water can only drain faster than the...
Hi Daox, Water can only drain faster than the pump can supply if air is able to flow up the pipe against the water flow. Unless the return pipe is over-sized, I am a bit surprised that this would...
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Forum: Solar Heating
06-07-12, 04:04 PM
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Replies: 67
Views: 45,477
I've a question about the pumping heads. Once...
I've a question about the pumping heads. Once the flow is established, won't the return pipe, the down leg, be full of water? If it is, won't there be a siphon effect, effectively reducing the...
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