[TRNSYS-users] how to account number of hours which temperature is out of range?

David BRADLEY via TRNSYS-users trnsys-users at lists.onebuilding.org
Wed Apr 12 20:33:52 PDT 2017

you can use an equation that compares the greenhouse temperature to a 
scheduled value (set by a Type14) and sets a value of 1 if the 
greenhouse temperature goes out of bounds.

alternatively there is a Type584 in the TESS Utility library (Zone 
temperature watcher) that is designed to do just what you need.



On 04/12/2017 07:15, Amirreza Heidary via TRNSYS-users wrote:
> Dear All
> I have designed a cooling system for a greenhouse. The temperature 
> should be between 22 and 28 C during the day and  15 to 21 C during 
> the night. I'm going to account number of hours during a month, which 
> the greenhouse temperature is out of the range. As the standard range 
> of temperature is different during the day and night, how can I 
> calculate it?
> Thank you
> --------------------------------------------------------------------------------------------------------------------------------------------------
> *amirrezaheidary*
> /master student of energy systems Engineering/
> /Sharif university of technology/
> /Tehran-Iran/
> /E-mail address/:
>     heidari at energy.sharif.edu <mailto:heidari at energy.sharif.edu>
>     a <mailto:sm_mousavi at pwut.ac.ir>mirrezaheidarysbu at gmail.com
>     <mailto:mirrezaheidarysbu at gmail.com>
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Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
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d.bradley at tess-inc.com


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