[TRNSYS-users] Type557b's problems-about borehole resistance

[Dapeng Li]

Dear Jeff and Trnsys users,

Actually I use Type557b to obtain the borehole thermal resistance and
thermal conductivity of soil by thermal respons test. I think understanding
the parameter 11 and 12 will make my work better. And can you give me some
other advise for thermal response test by using Type557?

Thank you in advance.

Dapeng Li

On Wed, Jan 21, 2009 at 2:35 AM, Jeff Thornton <thornton at tess-inc.com>wrote:

> <2. What I understood about these two paramters is that the total borehole
> resistance is calculated by paramter 11 and the absolute value of
> parameter 12. I don't know whether my understanding is correct or not?  If
> my understanding is right, then how is the form of the formula that
> calculate the total borehole resistence and how to accurately get the
> values of these two parameters?>
>
> If you're not comfortable calculating the resistances yourself and
> entering them in the proformas, then you should use the other proformas
> for the Type 557 model that calculate these resistances for you based on
> the type of pipes, pipe spacing etc.  You chose the "Thermal Resistance
> Known" folder and instead should have chosen the "Standard" folder.  Hope
> this helps.
>
> Jeff
>
>
>
> Jeff Thornton
> President - TESS, LLC
>
> 2916 Marketplace Drive - Suite 104
> Madison WI 53719 USA
>
> Phone: 608-274-2577
> Fax: 608-278-1475
> E-mail: thornton at tess-inc.com
> Web: www.tess-inc.com
>
>
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