[TRNSYS-users] help for cooling load in type 56

[David Bradley]

Dear Meltem,
   The sensible cooling load calculated by Type56 is the amount of energy 
that must be extracted from the space in order to keep it at the 
temperature that you have specified (25 C in your case). If you want Type56 
to report 0 cooling load when the building is not occupied, you have a 
number of options. You could write an equation in your input file that 
multiplies the Type56 reported cooling load by 0 whenever the building is 
not occupied. Alternatively, you can define a SCHEDULE in Prebid (or 
TRNBuild for those of you using TRNSYS 16) that sets the available cooling 
capacity of the building to zero whenever the building is not occupied. A 
third alternative is that you can set an unrealistically high cooling set 
point temperature (100 C for example). That will insure that your building 
would not naturally reach the cooling set point temperature and would 
therefore not require any cooling energy.
Kind regards,
  david

At 03:29 12/16/2005, Meltem Bayraktar wrote:
>  Dear Trnsys users,
>
>I am a masters student and just started using Trnsys. I want to calculate 
>cooling load for my 5-zone building with Trnsys 15 using IIsibat3. I ve 
>defined my building in Prebid and set up the model in IIsibat using Type 
>56. I defined set temperatures for my cooling system 25 C in Prebid as 
>COOLING. I want my model to calculate cooling energy only for occupied 
>hours like 8.0-18.00. When i run the simulation it calculates it for the 
>whole season.
>How can i achieve to get right results
>Any help would be appriciated
>Thank you in advance
>Meltem
>
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