Commercial Water Heating [RE-wrenches]

[Dean T. Newberry]

<x-flowed>
 

Your free subscription is supported by today's sponsor:
-------------------------------------------------------------------
Win a Lexus RX330! Class and beauty rolled up in an SUV! Drive 
your family this winter in style. Make it yours! Click below and 
sign up now!
http://click.topica.com/caacVl3bz8Qcsbz9JC9a/Vente
-------------------------------------------------------------------

Hi y'All,
    I did some analysis several year ago on waste water heat recovery 
for a laundromat.
The timing of the waste water cycle and fill cycles was not coincident, 
and I came to the conclusion was that the efficiency of the system would 
not support the investment.
The drain heat exchanger might work better on a shower where the supply 
and drain flows are coincident. This conclusion is supported by Darryl's 
experience.
    Hot water heating issues are likely to get more interesting as the 
cost of Natural Gas rises. I have been getting papers on the long term 
forecast for LNG, and basically worldwide demand is outrunning supply.
    The last solar thermal marketing opportunity in the 70's was 
characterized by lots of really terrible designs and equipment developed 
by inexperienced entrepueners and installed by incompetents. A 
significant percentage of the buying public got burned. It is up to the 
wrenches to get really agressive about marketing good equipment 
installed to the highest standards to keep the sharks and fools out of 
the center of the market.

culater  deant

Darryl Thayer wrote:

>Hi all
>I have used the standard waste heat recovery exchanger
>in laundry mats.  This is a section of drain pipe with
>a coil of copper around it.  The problem is the hot
>water is drawn when filling the machines and dumped at
>a later time, thus the discharge cycle is not in phase
>wht the charging cycle.  
>
>Another item is the Air to Air exchanger supplying
>heat to the laundry space.  The problem is the fire
>hazard of the lint buildup.  The units require
>frequent cleaning.  I made and installed one several
>years ago, still in use, but I would never take the
>risk again.  I asked if I could remove it, but the
>owner likes it to much.
>
>On Microturbines, again several years ago, 1995? very
>long life, repair, rebuild does not enter picture. 
>First Cost out of sight, and efficiency less than
>recip engine, 15 to 17% as I remember, but check. 
>
>Daryl
>

-- 
Dean T. Newberry
Marketing and Sales

Quantum Energy Group
256 Applegate School Road
Applegate, Ca. 95703

Tel: 530 878-4585
Fax: 530 878-6685
Cel: 530 867-2392

deant at dcn.org
http://www.talbottsolar.com/
http://mjdsolar.com/

Your free subscription is supported by today's sponsor:
-------------------------------------------------------------------
Are you serious about buying a NEW car or truck soon? 
Research before stepping on the car lot and save THOUSANDS!
Get NO OBLIGATION price quotes from car dealers in your area.
http://click.topica.com/caacVmkbz8Qcsbz9JC9f/LeadClick
-------------------------------------------------------------------

- - - -
To send a message: RE-wrenches at topica.com

Archive of previous messages: http://lists.topica.com/lists/RE-wrenches/read

List rules & etiquette: www.mrsharkey.com/wrenches/etiquette.php

Check out participant bios: www.mrsharkey.com/wrenches/

Hosted by Home Power magazine

Moderator: michael.welch at homepower.com
--^----------------------------------------------------------------
This email was sent to: michael.welch at homepower.com

EASY UNSUBSCRIBE click here: http://topica.com/u/?bz8Qcs.bz9JC9.bWljaGFl
Or send an email to: RE-wrenches-unsubscribe at topica.com

For Topica's complete suite of email marketing solutions visit:
http://www.topica.com/?p=TEXFOOTER
--^----------------------------------------------------------------




</x-flowed>