[Ibpsausa] Groundwater temperature estimating

Neal Kruis neal.kruis at bigladdersoftware.com
Wed Jan 6 10:57:51 PST 2016


Andrew,

EnergyPlus has source for the Kusuda algorithm here
<https://github.com/NREL/EnergyPlus/blob/develop/src/EnergyPlus/GroundTemperatureModeling/KusudaAchenbachGroundTemperatureModel.cc#L188>.
As Joe mentioned, this is a pretty crude estimate. For a more accurate
estimate you might want to use a finite difference calculation that takes
into account the surface boundary conditions (solar, wind, IR radiation to
the sky, etc.).

Neal Kruis
720 583-5587

Vice President
Big Ladder Software
1624 Market Street, Suite 304
Denver, CO 80202
bigladdersoftware.com


On Mon, Jan 4, 2016 at 8:50 AM, Andrew Corney <andrew.corney at sefaira.com>
wrote:

> Hi Nick and everyone who replied - thank you all for your help. It's great
> to see so much support in the community :-)
>
> So it turns out what I was actually after was a way to generate ground
> temperatures for a random set of weather data. Someone kindly send me the
> fortran script that E+ uses for its EPW files which is exactly what I
> needed.
>
> Have a great new year all look forward to catching up in 2016.
>
> Andrew
>
> Andrew Corney • PE, M.CIBSE, M.ASHRAE
>
> Product Director
>
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>
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>
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>
>
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>
> On Mon, Jan 4, 2016 at 2:47 PM, Nicholas Caton <ncaton at catonenergy.com>
> wrote:
>
>> Hi Andrew!
>>
>> Oklahoma State University in Stillwater, OK produces quite a bit of
>> research concerning the developing science of ground source wellfield
>> system design and verification.  Also, individuals I personally consider
>> leaders in our circles of energy simulation when it comes to anything
>> ground source spent time with that department.
>>
>> If there exists an established best practice for extrapolating ground
>> temperatures (short of direct measurement), there's a good chance someone
>> at that institution knows and possibly even derived the answer ;-).
>>
>> Of course if you're lucky someone will reply with a direct answer -
>> here's hoping!
>>
>> ~Nick
>> On Dec 23, 2015 2:38 PM, "Andrew Corney" <andrew.corney at sefaira.com>
>> wrote:
>>
>>> Hi All,
>>>
>>> Does anyone know of a peer-reviewed paper / methodology they could share
>>> with me that describes a process for converting annual weather data into
>>> monthly groundwater temperatures?
>>>
>>> Obviously a lot of EPW files already have ground water temperatures but
>>> many don't and a lot of other weather data doesn't have that information so
>>> it'd be great to know if there was a well-recognised process for making
>>> those estimates.
>>>
>>> Thanks in advance for any help anyone can provide.
>>>
>>> best regards,
>>>
>>> Andrew
>>>
>>> Andrew Corney • PE, M.CIBSE, M.ASHRAE
>>>
>>> Product Director
>>>
>>> Sefaira - Sustainability • Performance • Design
>>>
>>> M +44 (0)7887 059 722
>>>
>>> T +44 (0)2037 147 619
>>>
>>> Skype andrew.corney.sefaira
>>>
>>>
>>> Read this article
>>> <http://continuingeducation.bnpmedia.com/article.php?L=480&C=1446> in
>>> Architecture Record and complete a quiz to earl AIA and GBCI credit
>>>
>>> This email was sent from Sefaira UK Ltd.
>>>
>>> For company contact and registration information, please visit:
>>> http://www.sefaira.com/info/contact
>>>
>>>
>>>
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