daestrom wrote:

"Robert Gammon" wrote in message
. net...
wrote:
Robert Gammon misunderstands again:
snip
Goto www.gfxtechnology.com/GFX-STAR.html and click on Application
Notes and click on the link to Retrofit of an existing Solar Hot
Water Heater.

You sir, need to READ first, before you make accusations that you
cannot back up with facts.

In there he describes a patent pending application of GFX Star in an
industrial process control application.

The models of what happens to the efficiency of his product with
changing potable water flows thru the equipment are there for all to
see.


Okay, *I* read the documents. It is clear that you must have a
separate storage tank for the GFX-star setup to work 'as advertised'.
Only by using a *cooler* separate storage tank is the setup able to
capture the waste heat from 'batch' drains. Once the storage tank
reaches the temperature of the greywater (or exceeds it in the
conventional heater storage tank), performance will drop off.

Well in the Solar Heater Retrofit, HE DOES NOT USE A SEPARATE TANK!!!

This way can effectively 'shift' the heat from outgoing batch drains
to a separate storage tank of fresh-water. So the greywater doesn't
have to be stored, and you can still use the low-maintenance,
straight-bore, GFX heat-exchanger.

For 'best' performance, you would want to route the storage tank
outlet to the 'cold' tap for the shower as well. This looks like
their 'tempering valve' arrangement. But you might be better off
routing straight 'cold' water from the supply directly to sinks and
laundry, bypassing the whole setup for cold supply to those usage
points. Otherwise you would be wasting some of the captured heat on
laundry, and who wants a glass of warm water to drink. Some more
plumbing :-(

In NEW construction easy to do, or in a home with ALL plumbing in the
basement, this is just a few new runs of 'cold' water. I see the
laundry also getting the warm water from the heat exchanger. Only
refrigerator water supply, and sinks get untreated water. Most all the
clothes washing we do is in Warm water, so if that winds up being a bit
warmer than usual, OK.
Someone mentioned some concerns about storage tank of 'warm' water and
Legionarries disease. But if you have treated water, that probably
isn't too much of a concern.

Its not just Legionnaires, there are an army of bacteria waiting to do
damage. Water with chlorine added, ie city water supplies will be
ok. Well water needs special treatment. My application will be new
construction with a well. All water will be processed thru a Whole
House Filter to get rid of sand and silt. Then it goes thru a
1000gal/day RO with UV to a 350-500 gallon storage tank. A 65psi pump
thn delivers this water to all uses in the house.