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

[Dapeng Li <jiap1120@gmail.com>]

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@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@tess-inc.com
Web: www.tess-inc.com