[TRNSYS-users] Using to pairs of simulation start time and simulation stop time in a project

[knut.erik.enerstvedt at niva.no]

Hello Mehdi,

You can use a forcing function (Type 14) and an equation block to solve 
this issue. Step 1: Set the forcing function to output 0 for the hours of 
the year you define as winter and 1 for the hours you define as summer. 
Step 2: In an equation block with an input variable "Summer" from the 
forcing function, define two equations "c_coil_ctrl = Summer" and 
"h_coil_ctrl = 1 - Summer". Step 3: Link "c_coil_ctrl" to all control 
signals concerning the cooling coil (pumps, fans etc.) and "h_coil_ctrl" 
to all control signals concerning the heating coil. This will run the 
cooling coil in summer and heating coil in winter.

Best regards,
Knut Erik Enerstvedt 


----- Message from mahdi shahrestani <mahdishahrestani at yahoo.com> on Sat, 
5 Jun 2010 18:08:23 -0700 (PDT) ----




>Hello everybody 
 
>My project has two main parts, first cooling coil and the second heating 
coil. I want to run the cooling coil in summer >and heating coil in 
winter. 
 
>As far as I know, start and stop run time in ?control card? are 
applicable to all equipment but I need to run cooling part >in summer and 
heating parts in winter.
>I was wondering if any body could give me some hint to solve the issue. 
 
>Regards
>Mehdi




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