[RE-wrenches] Hot Water Tanks

Fri Aug 29 05:54:44 PDT 2008

I've been using fibreglass tanks from Design Tanks in South dakota. 

a rather large variaty of sizes from 150 gal to 8000 gal.  you can get 
fittings wherever you want, and can get sectional tanks (to 800 gal) for 
assembly in small rooms (go thru a 28" door, assemble inside.)   good to 
180 F,

could part of the problem be that the tarms might go to higher temps 
than the EPDM can handle.  Just a thought, since flatplate panels are 
sort of self temperature limiting.

Karl Schwingel
NABCEP certified Solar Thermal Installer
Northwind Renewable Energy LLC
Stevens Point, Wi.

David Palumbo wrote:
> Ken,
>
> Appear to be leaking from where heat exchangers contact bottom.
> I do not know the specific tank temps as these were not my tanks, or
> customers tanks.
> No, sidewall penetrations.
>
> What tank lining material have you worked with? And how have they been
> holding up?
>
> Dave
>
>
>
> -----Original Message-----
> From: re-wrenches-bounces at lists.re-wrenches.org
> [mailto:re-wrenches-bounces at lists.re-wrenches.org]On Behalf Of Ken
> Schaal
> Sent: Thursday, August 28, 2008 9:27 AM
> To: RE-wrenches
> Subject: Re: [RE-wrenches] Hot Water Tanks
>
>
> Dave and others-
>
> Where and how do these leaks occur?
> Stress at points of contact with bottom of copper coils?
> Deterioration of the EPDM over time? at what average and maximum temps?
> Sidewall penetrations below water level?
>
> Other issues?
>
> Thanks
> Ken Schaal
> CommonWealth Solar
>
>
> ----- Original Message -----
> From: "David Palumbo" <dave at independentpowerllc.com>
> To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
> Sent: Thursday, August 28, 2008 9:00 AM
> Subject: Re: [RE-wrenches] Hot Water Tanks
>
>
>   
>> We have experience with STSS tank's. Lot's of Tarm's installed around here
>> in the past 10 years with that tank. Too many of the tanks leak after 8 to
>> 10 years. That's why we decided to make our own tank.
>>
>> Dave
>>
>> -----Original Message-----
>> From: re-wrenches-bounces at lists.re-wrenches.org
>> [mailto:re-wrenches-bounces at lists.re-wrenches.org]On Behalf Of Jeff
>> Blick
>> Sent: Wednesday, August 27, 2008 5:28 PM
>> To: re-wrenches at lists.re-wrenches.org
>> Subject: Re: [RE-wrenches] RE-wrenches Digest, Vol 1, Issue 95
>>
>>
>>
>> Hiya Dave,
>> We installed an STSS tank at a very large thermal system in Colorado this
>> past winter.  Check out their website, excellent product.  If nothing else
>> this will give you a jumping off point in your research efforts.  The
>> website is stsscoinc.com.  Good to hear from you the other day...talk to
>> you
>> soon.......
>>
>>
>> Jeff Blick
>> PV installer
>> Sunlight Solar Inc.
>> 4 NW Franklin
>> Bend, OR 97701
>> direct: 541-306-4196
>> fax: 541-322-1911
>> jeff.blick at sunlightsolar.com
>> www.sunlightsolar.com
>>
>> -----Original Message-----
>> From: re-wrenches-bounces at lists.re-wrenches.org
>> [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of
>> re-wrenches-request at lists.re-wrenches.org
>> Sent: Wednesday, August 27, 2008 10:37 AM
>> To: re-wrenches at lists.re-wrenches.org
>> Subject: RE-wrenches Digest, Vol 1, Issue 95
>>
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>> Today's Topics:
>>
>>   1. Re: Hot water tank liner recommendations? (David Palumbo)
>>   2. Re: Hot water tank liner recommendations? (Aaron Wellendorf)
>>   3. Sunny Boy 6000U (marco)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Tue, 26 Aug 2008 22:25:53 -0400
>> From: "David Palumbo" <dave at independentpowerllc.com>
>> Subject: Re: [RE-wrenches] Hot water tank liner recommendations?
>> To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
>> Message-ID:
>> <DJEBJJALDIMBNFIAMJMCKEEFDHAA.dave at independentpowerllc.com>
>> Content-Type: text/plain; charset="iso-8859-1"
>>
>> Wrenches,
>>
>> Does anyone have a recommendation for a waterproof material to line a 950
>> gallon hot water storage tank? This insulated storage tank will have heat
>> exchange coils from a wood fired Tarm boiler as well as from SHW
>> collectors.
>> The liner must be able to withstand temperatures of 180 degrees F.
>>
>> We have had recommendations that include EDPM roofing membrane, and pond
>> liner material http://www.firestonesp.com/pondgard.asp?sub=b1a and
>> http://www.firestonebpe.com/lining/tech_data/tech_guidelines/_down/_en/T
>> and
>> http://www.firestonebpe.com/lining/tech_data/tech_guidelines/_down/_en/T
>>
>> Also, there is a concern that these tank liners have leaked in the past
>> because the bottom of the tank liner was eventually penetrated due to poor
>> protection from the stress of having the copper heat exchanger coils
>> sitting
>> on it. I'm wondering if closed cell blue(or pink) board insulation would
>> be
>> a good choice for this duty. Will it hold up over the years at temps up to
>> 180F? As an alternative we could mill up some local Hemlock wood to
>> separate
>> the coils from the liner. Hemlock has been used for years to build spring
>> boxes out of, the reputation being "that as long as the wood stays wet it
>> will last for decades".
>>
>> And, is there a water treatment product that we should add to the storage
>> tank that will help protect the liner from breaking down over the years?
>>
>> Thanks for your time,
>>
>> Dave Palumbo
>> Independent Power LLC
>>
>>
>>
>>
>> ------------------------------
>>
>> Message: 2
>> Date: Wed, 27 Aug 2008 09:28:06 -0700
>> From: "Aaron Wellendorf" <Aaron at stellarenergy.com>
>> Subject: Re: [RE-wrenches] Hot water tank liner recommendations?
>> To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
>> Message-ID:
>> <352B2228A318104184C8BD2F4B0996E3014D871D at dcpserver2.DCPS2.local>
>> Content-Type: text/plain; charset="us-ascii"
>>
>> I would ask that you contact Stephen Rhoades at Burke Industries: (800)
>> 669-7010 x406, www.burkeind.com. Burke Industries is manufacturer of
>> Hypalon, one of the best single ply membrane roofing products. The same
>> (or similar) products are used for reservoir liners, pond liners,
>> waterproofing underground homes, etc. If you need to set something on
>> the membrane such as a heat exchanger coil, then have a pre-made walkpad
>> heat welded under the area of the coil. The walkpads are several times
>> thicker than the membrane itself and are made for rough service areas.
>> Stephen really helped me a lot on one of my large commercial projects.
>>
>> Aaron Wellendorf
>>
>>
>>
>>
>> ------------------------------
>>
>> Message: 3
>> Date: Wed, 27 Aug 2008 06:53:30 -1000
>> From: "marco" <marco at pvthawaii.com>
>> Subject: [RE-wrenches] Sunny Boy 6000U
>> To: "'RE-wrenches'" <re-wrenches at lists.re-wrenches.org>
>> Message-ID: <BDEAF5FED48B49C0AB18D28476C0CDB8 at marcohp>
>> Content-Type: text/plain; charset="us-ascii"
>>
>> Amigos y amigas,
>>
>> I'm looking for a new or simply working old-style SMA SB 6000U.  Might
>> anyone have one they'd be willing sell me?  If so, please contact me
>> off-list.
>>
>> thanks,
>> marco
>>
>> Marco Mangelsdorf, Ph.D., President
>> Electrical Contractor License C-26351
>> 69 Railroad Avenue, A-7
>> Hilo, Hawai'i 96720
>> (808) 969-3281, 934-7462 facsimile
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> ------------------------------
>>
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>> End of RE-wrenches Digest, Vol 1, Issue 95
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-- 
Karl Schwingel
NABCEP Certified Solar Thermal Installer
NorthWind Renewable Energy LLC

PO Box 723 Stevens Point, WI 54481
Karl at Northwindre.com
Cell: 715 209 0446
Fax : 715 952 4501

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