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

[David BRADLEY]

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
>
>
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-- 
***************************
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 at tess-inc.com

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

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