[Equest-users] Outdoor swimming pool and heater

Jayant Patil jppatil at gmail.com
Mon Mar 28 09:18:46 PDT 2016


I use the methodology described in the below link. It is pretty much close
to the ASHARE  method and EPA's energy star performance rating technical
document.


http://www.rlmartin.com/rspec/whatis/studies_outdoor_inactive.htm

Jay



On Mon, Mar 28, 2016 at 9:14 AM, Elizabeth Gillmor <
elizabeth at energetics-eng.com> wrote:

> I use bin calcs for this, though I am interested to hear if others have a
> better way.  Total load = losses from evaporation + radiation +
> convection.  Use 8760 data from your weather file to get OA DB, humidity,
> solar radiation, wind speed etc.  Useful paper with equations here:
> http://www.mmshah.org/publications/ASHRAE%202014%20Evaporation%20paper.pdf
>
> From my bin calcs I get a total annual load in Mbtu/year, then convert
> that to Mbtu/hr for the days that the pool is open (which averages the load
> across its operating period), and model that as a process load on a boiler
> loop with an on/off schedule ("on" during the open season).  It's a
> relatively OK estimate for a fuel rate that doesn't have a demand charge,
> but might not be the best way for your electric pool heater if you have a
> demand charge on your rate.
>
> *Elizabeth Gillmor  PE, BEMP, LC, LEED AP*
>
> *e n e r g e t i c s  **consulting engineers, llc*
> energetics-eng.com | 303.619.0091
>
> On Mon, Mar 28, 2016 at 9:42 AM, Christian Kaltreider <
> ckaltreider at sudassociates.com> wrote:
>
>> Rehana,
>>
>>
>>
>> Estimating the energy consumption of a pool heater can be very tricky.
>> The dominant mode of heat loss is generally evaporation.  Some major
>> influences include activity level of people using the pool
>> (splashing/stirring increases evaporation), wind speeds, and the use of a
>> pool cover.  The US DOE has some material on the subject:
>> http://energy.gov/energysaver/gas-swimming-pool-heaters  There is a
>> table on this page which I have used to back calculate and extrapolate
>> heating requirements for a specific project as a sanity check.
>>
>>
>>
>> Also, ASHRAE HVAC Applications 2015 addresses pool heat loss starting on
>> page 5.6.  The discussion is helpful and provides sound calculation
>> methods, but they are more easily applied to indoor pools than outdoor
>> pools.
>>
>>
>>
>> That’s all I have at the moment; hopefully you can find some additional
>> resources.
>>
>>
>>
>> Good luck,
>>
>> Christian
>>
>>
>>
>> *From:* Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] *On
>> Behalf Of *Sunayana Jain
>> *Sent:* Monday, March 28, 2016 8:23 AM
>> *To:* Rehana Jiffrey; equest-users at lists.onebuilding.org
>> *Subject:* Re: [Equest-users] Outdoor swimming pool and heater
>>
>>
>>
>> Rehana,
>>
>>
>>
>> You can model pool heater load on electric meter (see image below) with
>> winter months schedule:
>>
>>
>>
>>
>>
>> Thanks,
>>
>>
>>
>> *Sunayana Jain CEM, LEED AP BD+C*
>>
>> *From:* Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] *On
>> Behalf Of *Rehana Jiffrey
>> *Sent:* Saturday, March 26, 2016 11:21 AM
>> *To:* equest-users at lists.onebuilding.org
>> *Subject:* [Equest-users] Outdoor swimming pool and heater
>>
>>
>>
>> Dear All,
>>
>> I'm trying to model an outdoor swimming pool located at the roof top of a
>> residential building. Pool heater (45Kw) operates from December to March (4
>> months).
>>
>> I was wondering if anyone could help me how to model this scenario, and
>> where to input these consumption values.
>>
>> FYI, this is my first time modeling an outdoor pool and pool heater.
>>
>> Thank you,
>>
>> Rehana.
>>
>> _______________________________________________
>> Equest-users mailing list
>> http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org
>> To unsubscribe from this mailing list send  a blank message to
>> EQUEST-USERS-UNSUBSCRIBE at ONEBUILDING.ORG
>>
>>
>
> _______________________________________________
> Equest-users mailing list
> http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org
> To unsubscribe from this mailing list send  a blank message to
> EQUEST-USERS-UNSUBSCRIBE at ONEBUILDING.ORG
>
>


-- 
************************************************************************************************
"I'd put my money on the sun and solar energy. What a source of power!
I hope we don't have to wait till oil and coal run out before we tackle
that."
- Thomas Edison (1847-1931)
************************************************************************************************
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20160328/17105140/attachment-0002.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.jpg
Type: image/jpeg
Size: 27726 bytes
Desc: not available
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20160328/17105140/attachment-0002.jpg>


More information about the Equest-users mailing list