the Otherpower.com Discussion Board || Comments Flow diagramm for combined water and space heating

Front Page - [Homebrewed Electricity-- (wind) (solar) (hydro) (steam) (controls) (storage) (mechanical)] - Classifieds - Site News
Everything - Newbies - [Remote Living-- (housing) (heat) (light) (water)] - Rants & Opinion - Diaries - Our Products

Flow diagramm for combined water and space heating | 19 comments (19 topical, 0 editorial)

Re: Flow diagramm for combined water and space hea (3.00 / 0) (#7)
by Ungrounded Lightning Rod on Thu Apr 10th, 2008 at 06:20:30 PM MST
(User Info)

The nice thing about pipe-in-pipe is that the central pipe runs straight through the Ts, reducers, etc. So unless something rots a hole in it you can be confident the liquid in the two circuits won't mix. The inner pipe can handle a pressure difference about as great as the pressure it can handle as a hunk of bare pipe. (And if the hydronic system has a lower pressure than the house water you'll still be OK even if you get a pinhole leak, since the water will flow from house to hydronics.)

Meanwhile any flaws in the fittings will cause a leak of the outer circuit water to the surrounding area, rather than between the two circuits.

[ Parent ]

Re: Flow diagramm for combined water and space hea (3.00 / 0) (#8)
by Lumberjack on Fri Apr 11th, 2008 at 05:40:51 PM MST
(User Info)

pipe in pipe is not legal in many areas.... it does not count as double walled.

[ Parent ]

Re: Flow diagramm for combined water and space hea (3.00 / 0) (#10)
by Ungrounded Lightning Rod on Mon Apr 14th, 2008 at 01:37:06 PM MST
(User Info)

Good point.

OK. Then solder a coil of copper tubing to a hunk of copper pipe, wrap it in insulation, and you're all set. Hydronic water through the coil top-down, convection loop between bottom and top of water heater through the inner (fat) straight pipe.

[ Parent ]

Re: Flow diagramm for combined water and space hea (3.00 / 0) (#11)
by Lumberjack on Thu Apr 17th, 2008 at 04:52:25 PM MST
(User Info)

One of the better schemes is to remove the insulation from a water tank and wrap it with copper tubing after which you replace the insulation....

[ Parent ]

Flow diagramm for combined water and space heating | 19 comments (19 topical, 0 editorial)

Menu

· create account
· How to use the board
· FAQs
· search the board
· Google search the board
· Old Otherpower Board

Login

Make a new account

Username:

Password:

You must be a registered user to post here. It's easy and free, and the link is on the upper right side of your page.
All trademarks and copyrights on this page are owned by their respective companies. Postings are owned by the poster, but may be deleted or moved at the ADMIN's sole discretion. The Rest © 2003 Forcefield.
You can Email the board ADMIN here. PLEASE include the username you signed up with!