[RE-wrenches] SWH data logging

[Carl Adams]

Bill,

There is another metering system in use by Lakeland ELectric.  The meters
are from ABB (similar to the Metrima in concept).  I feel sure Lakeland is
collecting RECs based on these meters.  Here is a link to a paper presented
at the ASES solar conference last summer in CLeveland.
http://www.ncsc.ncsu.edu/research/documents/technical_papers/ASES_Cleveland_final.doc

Cheers
Carl

On Fri, Nov 14, 2008 at 10:55 PM, bill roush <billroush at gmail.com> wrote:

> Anyone using these to receive REC's Renewable Energy Credits?
>
>
> On Fri, Nov 14, 2008 at 9:39 PM, Carl Adams <swingjunkie at gmail.com> wrote:
>
>> Kelly,
>>
>> I have installed several of the Metrima BTU/KWH meters for SHW.  The kit
>> comes with a flowmeter, temperature sensors and wells (hot and cold), and a
>> calculator, nicely integrated.  These are utility grade meters and more
>> economical than the hardware you mentioned(dealer price $425).  Check out
>> TCT Solar ( http://www.tctsolar.com/ the US distributor).  The only
>> downside is that the units are BSP thread ( adapters to NPT are provided in
>> the kit to drop the temperature wells and the flow meter into a 3/4" NPT
>> line).  I guess if we deployed more of these in the US we'd have NPT as a
>> standard option.  Another use I've found for these units is they allow me to
>> adjustment for offsets in the tank temperature sensor vs the actual hot
>> water temperature ( 2 - 10 degrees typical), and adjust the high limit set
>> point accordingly.  I like the fact that customers can look at the kWh of
>> energy delivered by the SHW system and easily convert to $$savings.  Larger
>> units are available for higher flow rates/pipe sizes.
>>
>> Cheers
>> Carl
>>
>>
>>
>> On Fri, Nov 14, 2008 at 9:50 AM, Kelly Keilwitz, Whidbey Sun & Wind <
>> kelly at whidbeysunwind.com> wrote:
>>
>>> Thermal wrenches,
>>> We have a customer who wants to log the energy gain of his SHW system.
>>> The only viable option we've found is by Resol (also rebranded by
>>> Caleffi)
>>> which includes their top-line controller (~$280) in conjunction with
>>> their
>>> data logger, DL-2 ($500). With markup and installation this system will
>>> cost
>>> our customer over $1K.
>>>
>>> Are there any other AFFORDABLE options out there, that include data
>>> logging
>>> to a computer or web interface?
>>>
>>> Thanks,
>>> -Kelly
>>>
>>> Kelly Keilwitz, P.E.
>>> Whidbey Sun & Wind, LLC
>>> Renewable Energy Systems
>>> NABCEP Certified PV Installer
>>> 987 Wanamaker Rd,
>>> Coupeville, WA 98239
>>> PH & FAX 360-678-7131
>>> sunwind at whidbeysunwind.com
>>>
>>>
>>>
>>>
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>
>
> --
> Best,
> Bill Roush
> Heartland Solar Energy Industries Association
> www.hseia.org
> Heartland Renewable Energy Society
> www.heartland-res.org
>
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