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Search: Posts Made By: Ko_deZ
Forum: Renovations & New Construction 06-11-12, 12:57 PM
Replies: 588
Views: 501,927
Posted By Ko_deZ
Constand decay rate is not a real world...

Constand decay rate is not a real world situation, is it? Using dt/L and claiming it to be real world example would demand that the material surrounding the pipe drops in temperature exactly like the...
Forum: Renovations & New Construction 06-11-12, 04:01 AM
Replies: 588
Views: 501,927
Posted By Ko_deZ
You twisted yourself out of that quite well...

You twisted yourself out of that quite well Robert, but I am not convinced. I think this is a simplified illustration, not a simulation(?). If it is a simulation, the the parameters you have used is...
Forum: Renovations & New Construction 04-10-12, 02:40 PM
Replies: 588
Views: 501,927
Posted By Ko_deZ
Hi AC. Thicker alu means longer distance...

Hi AC.

Thicker alu means longer distance between pex pipes. Higher alu-cost, lower pex cost. I suggest cc 200mm with about 17mm pex, and maximum 80m long circuits. Just divide in several circuits...
Forum: Renovations & New Construction 12-23-11, 01:05 AM
Replies: 588
Views: 501,927
Posted By Ko_deZ
Regarding expansion tank, yes, you certainly need...

Regarding expansion tank, yes, you certainly need one. The pressure should be between 1.6 and 2.4 bar in a floor heating system to make help make sure the pump does not cavitate. Also, you must have...
Forum: Renovations & New Construction 11-17-11, 03:50 PM
Replies: 588
Views: 501,927
Posted By Ko_deZ
Testing floor heating for leaks using compressed air.

Hi.

Air will leak more easily than water, making air a good test tool if done right. There are a few problems though. The guidelines below should be used:

Test with 0.5 (7,5 psi?) bar gauge...
Forum: Renovations & New Construction 11-03-11, 10:31 AM
Replies: 588
Views: 501,927
Posted By Ko_deZ
In order to give any heat at all, the temperature...

In order to give any heat at all, the temperature of the water must drop trough the loop, that is the only way to get energy from the heated water. If you place the loop as I said, there will more...
Forum: Renovations & New Construction 11-03-11, 02:16 AM
Replies: 588
Views: 501,927
Posted By Ko_deZ
That is why the first place the water flows is...

That is why the first place the water flows is along outer walls, you make sure to place it like that. Also you make it double, back and fourth, before looping across the floor.then the warmest water...
Forum: Renovations & New Construction 10-22-11, 05:47 PM
Replies: 588
Views: 501,927
Posted By Ko_deZ
The pictures does give an idea on how it works....

The pictures does give an idea on how it works. It is not accurate though.

The temperature fall is faster the higher delta T, meaning when the difference in temperature of the air and water. This...
Forum: Renovations & New Construction 07-16-11, 04:15 AM
Replies: 588
Views: 501,927
Posted By Ko_deZ
Looks like a great solution you have there. The...

Looks like a great solution you have there. The grout will be able to store and somewhat distribute heat, and the metal will do the distribution. Steel is not the best thermal conductor, but it...
Forum: Renovations & New Construction 07-03-11, 04:14 AM
Replies: 588
Views: 501,927
Posted By Ko_deZ
No, that would not do much good i'm afraid. To...

No, that would not do much good i'm afraid. To transfer heat to a wooden floor (or anything but a solid concrete one), you need physical contact. The best way is to use heat spreader plates so that...
Forum: Renovations & New Construction 06-29-11, 03:05 PM
Replies: 588
Views: 501,927
Posted By Ko_deZ
That could not have been done better :thumbup:

That could not have been done better :thumbup:
Forum: Renovations & New Construction 06-28-11, 05:45 PM
Replies: 588
Views: 501,927
Posted By Ko_deZ
Hi all. Ok, I will dive in here as well. I had a...

Hi all. Ok, I will dive in here as well. I had a rather elaborate post in another thread, maybe you could make a link to it AC? I don't think I can insert links yet.

EDIT (Piwoslaw): Here is the...
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