Making them even worse isn't a good plan. I thought you were a greenie?
You can live in a cave but normal people don't like it. We had an apartment for nine months a few years back that was like your dream house. It *really* sucked not having decent natural light.
Or a failure of imagination, if the small leak is from the hot moisture laden side, then a bigger hole could help, as long as the outside doesn't become wetter... which it does when it rains and such.. it 's a fun question.
George H.
I'm not sure how the two numbers are related. The issue is 1 W/m^2 vs X W/m^2 for insulated walls! Comparing the numbers you do makes an assumption that the sun is shining in the window and being converted to heat. There are many simple ways to improve that issue including having trees outside or white lined drapes inside. Regardless of how cooling effects are mitigated or not, I think it is still a very significant issue for heating.
-- Rick C
compare 1W/m2k to this:
Check around. Some window shops will send them back to the fsctory to have them opened, cleaned and re-filled with new gas. They then run them thru an oven to seal them back up again. Also check out their warranty and what it covers.
I was able to get new free panels for my 8 year old windows, which were only just over $100 each new. Double hung custom size. Weird hazing in lower sections of 3 panes. Looked like the coating was evaporating. A Certain Teed company.
Greg
Another thread in which most participants don't understand the physics, but are sure they do. As Mr. Larkin has found it is a permanent fix, and does not make a significant difference to their insulation. The one thing I woul d suggest is plugging the hole with a filter, eg a dryish mix of sand & epo xy, to keep bugs out.
NT
Right. I have acquired one tiny spider already.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
I think a *very* small hole would be fine, and keep out bugs. Outside, it could slope up to keep out rain. I need a drill that can do that.
-- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
That was probably all new windows, not just the glass. Like I said, the glass replacement was closer to $30 per pane when I did a dozen or so on my VT house. It was pretty simple, really. The hardest part was keeping the cats inside while I was replacing them.
We had the windows fail on our last house but it wasn't the seals or the glass. The idiots put the low-E film on the outside of the glass. We had to have something like 35 panels replaced, some pretty large.
With a small hole, capillary action will dominate over the angle.
Then it should be the right size.
I think what matters is to equalize any thermally-driven pressure differences between the inside and outside, particularly negative pressure inside that will suck in water through degraded seals.
Double-pane windows are absurdly unreliable. They need redesign.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
Perhaps they're not reliable in earthquake zones but if installed properly, they're just fine in the real world.
Done. The units are closed but not sealed airtight. The glazing is external , meaning air access to the units is from outside not inside. Thus they are exposed to the lower water vapour content outdoor air. Such setups almost never mist, and when they do they clear promptly.
Performance figures & guarantees are chased with no thought for anything el se nowadays. As a result we have sealed units that can be filled with fancy gases for a little extra insulation - until it leaks out. And when the sea ls go... it's new unit time, or drill them etc.
Installing unsealed units is no extra difficulty, but few people are aware the solution exists, and the dg companies aren't ever going to profit by me ntioning it. So inherently faulty designs are the norm. So much so that UK BR actually require that now.
NT
Perhaps once again you have no clue what you're talking about.
NT
Once again, you prove just how full of shit you are. If installed properly and aren't physically damaged, they last for many decades.
al, meaning air access to the units is from outside not inside. Thus they a re exposed to the lower water vapour content outdoor air. Such setups almos t never mist, and when they do they clear promptly.
else nowadays. As a result we have sealed units that can be filled with fan cy gases for a little extra insulation - until it leaks out. And when the s eals go... it's new unit time, or drill them etc.
e the solution exists, and the dg companies aren't ever going to profit by mentioning it. So inherently faulty designs are the norm. So much so that U K BR actually require that now.
Huh, Do you know what fraction of heat loss is by conduction vs radiation? For gases does the thermal conductivity go as the molecular velocity,
1/sqrt(mass)? (I'll go look on wiki..)George H.
Monatomic gases behave that way, because they have no excited states in the kT (~25 meV) range of energies. More complicated molecules have lots of rovibrational states in that range, so they transfer more energy per collis ion, which makes them disappointing as insulators.
Xenon is the champ, but it's expensive.
Cheers
Phil Hobbs
In English weather, that is. Outside air is far from dry in the summer here in NY, let alone Miami or New Orleans.
Cheers
Phil Hobbs
n?
he kT (~25 meV) range of energies. More complicated molecules have lots o f rovibrational states in that range, so they transfer more energy per coll ision, which makes them disappointing as insulators.
Something that has always puzzled me is why are Thermopane windows filled w ith Argon instead of CO2. My copy of the Chemical Handbook has CO2 as bein g slightly better than Argon as far as thermal conductivity. I would not t hink that there is enough moisture that carbonic acid would cause problems.
Dan
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