[TRNSYS-users] About Type-952 for geothermal cooling

[SANJEEV JAKHAR]

Dear Mr. Jeff,
First of all thank you for your reply I have checked the Type 952 as per
your suggestion. However for zero insulation thickness and with zero
thermal conductivity it is not working at all.  For zero thickness means
there is no thermal conductivity of the insulating material. But when I put
default value of thermal conductivity with zero thickness it works.

Thanks & Regards,

*Sanjeev Jakhar*
Research Scholar


*Center for Renewable Energy and Environment Development (CREED)Mechanical
Engineering Department*
*Birla Institute of Technology & Science, Pilani*
*Rajasthan - 333031*

On Wed, Apr 29, 2015 at 7:02 AM, Jeff Thornton <thornton at tess-inc.com>
wrote:

>  Dear Sir,
>
> I just dragged out a Type 952 from the GHP Library, set the insulation
> thickness to zero and it ran just fine - with and without flow.  I checked
> the source code and there is no mention of a recent bug fix dealing with
> the insulation thickness.  Are you sure that you don't have som other error
> causing you problems?
>
> As for the average surface temperature, for most applications it's
> relatively close to the average air temperature for the site - but not
> always.  It is also close to the average deep earth temperature for many
> locations as well.
>
>
>
> Jeff
>
>
>
> ---
> Jeff Thornton
> President - TESS LLC
> 22 N. Carroll Street, Madison WI USA 53703
> Office: (608) 274-2577  Fax: (608) 278-1475www.tess-inc.com
> E-Mail: thornton at tess-inc.com
>
>  On 04/27/2015 1:05 am, SANJEEV JAKHAR wrote:
>
>  Dear sir/madam,
>
> I have a doubt on Type-952 (Buried horizontal pipes) for geothermal
> cooling in which the system supposed to be buried inside the soil. In the
> parameters how to define the thickness of insulation since I don't want to
> give thermal insulation to allow heat transfer between the pipe and soil.
> If I gave insulation as zero value it is showing some error and simulation
> no running. Please guide me how to solve the problem.
> Also please clarify what is average surface temperature. Is it equivalent
> to average annual ambient temperature or temperature of soil at a certain
> depth.
>
> Thanks & Regards,
>
> *Sanjeev Jakhar*
> Research Scholar
>
>
> *Center for Renewable Energy and Environment Development (CREED)Mechanical
> Engineering Department*
>
>  *Birla Institute of Technology & Science, Pilani*
> *Rajasthan - 333031*
>
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