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Heat from the Shower Drain | 23 comments (23 topical, editorial)

Re: Heat from the Shower Drain (3.00 / 0) (#2)
by TomW on Thu Dec 13th, 2007 at 10:57:06 AM MST
(User Info)

g-;

I wonder, did you mean "horizontal"?

Maybe I missed something here?

Seems like vertical would let the water just drop thru unimpeded?

Recapturing the heat from just used hot water makes great sense for sure.

I just don't understand that vertical bit,however.

If ours ran horizontal it would trap enough hair to make a wig weekly I think.

All in good fun.

Cheers.

TomW

"Education consists mainly of what we have unlearned."--Mark Twain

Re: Heat from the Shower Drain (3.00 / 0) (#3)
by ghurd on Thu Dec 13th, 2007 at 11:29:31 AM MST
(User Info)

The vertical thing is important!

The water sticks to the side of the pipe.

The more perfectly vertical, the more evenly it is spread. The thinner the layer of water, the more surface area it has per volume to transfer the heat to the pipe.

And IIRC, the thinner the layer the slower the flow, allowing more time for heat exchange.

There is a word for all that, but dang I don't remember what it is.
"anti-laminar flow"? :-)

I shed more than a Shetland pony...
G-

[ Parent ]

Re: Heat from the Shower Drain (3.00 / 0) (#23)
by joedupont (joedupont@juno.com) on Thu Jan 17th, 2008 at 09:40:55 PM MST
(User Info)

you might be better off going to a batch system .. maybe two or three.
that is you dump your cloths washer, dish washer and shower into three different drums with copper coils in them. they are insulated and you draw water through copper coils in them in parallel. every degree rise per pound is one btu. the hotter the tank the greater the btu transfer to the water going through. but you will extra some btus out of each tank . once the tanks reach close to ground temp. you dump them and wait for more water.
Our mission is to keep ourselves entertained with knowledge and learning through creativity. As long as we can create as long as we breath with out the governm
[ Parent ]

Heat from the Shower Drain | 23 comments (23 topical, 0 editorial)

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