[TRNSYS-users] Modelling a cooling coil Type 123

[Max Philipp Krebs]

Hi David,

unfortunately I dont have access to the TESS HVAC library. There isn‘t any
other model or Type in the standard library that includes this control
mode? If not, I maybe have to talk to my boss again ;-).

Nevertheless, thank you for your quick answer!

Regards,
Max




> Max,
>
>   If you have access to the TESS HVAC library you will find a Type508
> cooling coil model that includes the control mode that you are looking
> for.
>
> kind regards,
>
>   David
>
>
> On 10/07/2021 02:35, Max Philipp Krebs via TRNSYS-users wrote:
>> Hi there,
>>
>> I have a question concerning a cooling coil.
>>
>> I want to model a cooling coil Type 123. My goal is to implement a set
>> temperature for the outlet fluid temperature. For example: Cooling power
>> should only be provided if the inlet air temperature is above 20°C and
>> then the coil should have a set temperature for the outlet air
>> temperature
>> to be around 21°C.
>> How can I do this? On/Off Controller doesn't work because there is
>> always
>> the error that the cooling capacity must be greater than 0 which
>> obviously
>> isnt the case if the inlet temperature is below 20°C.
>> I have tried it with an equation and a gt-function but the result isnt
>> satisfying.
>>
>> Thanks for your help!
>>
>> Regards,
>> Max
>>
>>
>> _______________________________________________
>> TRNSYS-users mailing list
>> TRNSYS-users at lists.onebuilding.org
>> http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org
>
> --
> ***************************
> David BRADLEY
> Principal
> Thermal Energy Systems Specialists, LLC
> 3 North Pinckney Street - suite 202
> Madison, WI  53703 USA
>
> P:+1.608.274.2577
> d.bradley at tess-inc.com
>
> http://www.tess-inc.com
> http://www.trnsys.com
>
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at lists.onebuilding.org
> http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org
>