Re: [TRNSYS-users] Help in a themostat with 2 monitering temperature ( 2 temperatures to watch)

[David BRADLEY <d.bradley@tess-inc.com>]

Shahen,
  I think you can do this using two instances of Type108 and then an equation that combines the results into a single result. The equation will probably need to use some of the boolean logic functions such as GT(:,:). The GT(:,:) function returns a "1" if the first argument in parenthesis is greater than the second argument.
kind regards,
 David

On 3/23/2015 6:34 AM, Shahen Fakhraldin wrote:

Hi all,

I am looking for a controller that depends on two monitoring temperatures (and each monitoring temp has its own set temp), and this controller works according to the conditions below:

1- if the monitoring temp 1 is below a set temp 1 ===> system Off

2- if the monitoring temp 2 is higher that a set temp 2===> system On

To explain more, the system is turned Off when the first monitoring temp is below (or equal) the first set temp, and the system stays in Off condition until the 2nd monitoring temperature is higher (or equal) the 2nd setting temp where the system is turned On and continuous to be On till the 1st mentoring temperature is equal or below the 1st setting temp and so on.

Is there a component in TRNSYS can do that ?

Any kind of help would be most appreciated.

King regards,

Shahen Fakhraldin

_______________________________________________
TRNSYS-users mailing list
TRNSYS-users@lists.onebuilding.org
http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org

-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI  53703 USA

P:+1.608.274.2577
F:+1.608.278.1475
d.bradley@tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com