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Forum: Conservation

10-06-09, 08:33 PM

Replies: 16

drain water heat recovery

Views: 14,312

Posted By Daox

They're placed vertically to maximize efficiency....

They're placed vertically to maximize efficiency. The water clings to the walls of the pipe giving you the most surface area. IMO, 40% efficiency is pretty darn good. However, a few of the places...

Forum: Conservation

11-25-08, 08:20 AM

Replies: 16

drain water heat recovery

Views: 14,312

Posted By Daox

Well, you could install it right under the shower...

Well, you could install it right under the shower and have it preheat your cold water going to the shower. That would work perfectly. I highly doubt you can take a shower before a drop of hot water...

Forum: Conservation

11-24-08, 08:14 PM

Replies: 16

drain water heat recovery

Views: 14,312

Posted By Daox

I found another maker of these things. It...

I found another maker of these things. It appears that this one can be installed horizontally or vertically. The website doesn't say much about how it operates though.

EcoDrain | high...

Forum: Conservation

10-15-08, 09:55 AM

Replies: 16

drain water heat recovery

Views: 14,312

Posted By Daox

I just checked out your spreadsheet for...

I just checked out your spreadsheet for calculations. What efficiency does the sheet use for the heat exchanger? There is a pretty large variance between the different models avaliable.

Here are...

Forum: Conservation

09-22-08, 04:55 PM

Replies: 16

drain water heat recovery

Views: 14,312

Posted By Daox

Thats exactly my thought on it! :) Since...

Thats exactly my thought on it! :)

Since they install them vertically, the water going down the drain clings to the sides of the pipe creating a thin film and thus a great amount of surface area...

Forum: Conservation

09-22-08, 03:20 PM

Replies: 16

drain water heat recovery

Views: 14,312

Posted By Daox

drain water heat recovery

Has anyone used or know about drain water heat recovery? I am incredibly interested and am most likely going to try this out.

http://gfxtechnology.com/

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