[Greenbuilding] Drain Waste Heat Recovery

[Dr. C.F. Vasile]

Dr. John Straube, P. Eng.
Associate Professor
Dept of Civil Engineering & School of Architecture
University of Waterloo
Waterloo, ON Canada

Dear Professor Straube: Regarding your comment "I have actually seen the 
Renewability factory, and their is nothing trade secret about it that I can 
see" --- if you ever saw John Ratzenberger's TV show "Made in America" you 
would know many products are made with trade secrets that cannot be seen.
    Additionally, please clarify some comments in your email below:
a.    How much is "pretty good efficiency": 20%? 60%? 90%?
b.    At what flow rates did your friend measure this efficiency and what 
were the corresponding pressure drops?
c.    What did you mean to say in this confusing sentence: "Also, low 
pressure drop coils are more not necessarily poor heat transfer."?
d.    Are you aware this sentence is redundant "There are [U-] factors of 
thermal transfer, mass flow rates, roughness inside, area of contact 
etc." --- because the effects of "roughness" are automatically accounted for 
in a heat exchanger U-factor?

Are you also aware:
1.    The coil & tube GFX designed in 1986 by DOE consultant Milton Pravda 
(http://gfxtechnology.com/Pravda.pdf, Figs 1 & 2) exhibited "pretty good 
efficiency" but couldn't meet plumbing codes?
2.    Watercycles (http://www.watercycles.ca/watercycles/) developed a 
GFX-design similar to Pravda's that meets plumbing codes?
3.    We invested our entire $85,000 DOE Grant and five years R&D developing 
a trade-secret manufacturing process because in 1986 it wasn't "Pretty easy 
to role a squared copper tube onto a DWV copper pipe in a thermally 
conductive manner"?
4.    The first Power-Pipes were US-made GFX's illegally passed off as 
Power-Pipes; as you may verify from the photos and invoices @ 
http://www.gfxtechnology.com/Exporting-America.pdf?

Finally,
i.    When you visited the Renewability factory, were you informed that 
multi-coil Power-Pipes made by Doucette not only embodied misappropriated 
trade secrets; some had counterfeit UL-labels supplied by Renewability?
ii.   Why do you suppose Renewability pirated GFX-testimonials 
(http://www.power-pipe.ca/en/testimonials.html) from my Website 
(http://gfxtechnology.com/testimonials.html)?
iii.  Why doesn't Renewability publish effectiveness measurements like that 
posted by their Canadian competition? (See "Test Sheet " links @ 
http://www.watercycles.ca/watercycles/content/view/15/30/)

Yours truly,
==================================================================
Dr. Carmine F. Vasile, President & GFX's Inventor
WaterFilm Energy Inc.; P.O. Box 128; Medford, NY 11763
Tel: 631-758-6271 Fax: 631-730-3918
Email: gfx-ch at msn.com  Web: http://www.gfxtechnology.com/
==================================================================


----- Original Message ----- 
From: "John Straube" <jfstraub at civmail.uwaterloo.ca>
To: "Carmine Vasile" <gfx-ch at msn.com>
Cc: <richard6 at gmail.com>; <Greenbuilding at listserv.repp.org>
Sent: Friday, June 29, 2007 2:39 PM
Subject: Re: [Greenbuilding] Drain Waste Heat Recovery
<snipped>
I have actually seen the Renewability factory, and their is nothing trade
secret about it that I can see. Pretty easy to role a squared copper tube
onto a DWV copper pipe in a thermally conductive manner. In fact, one of
best friends actually made his own and has measured pretty good efficiency.
It is simply easier to buy a product.
Also, low pressure drop coils are more not necessarily poor heat transfer.
There are factors of thermal transfer, mass flow rates, roughness inside, 
area of contact etc.
<snipped>
Dr John Straube, P.Eng.
Associate Professor
Dept of Civil Engineering & School of Architecture
University of Waterloo
Waterloo, ON Canada