[TRNSYS-users] Modelling a cooling coil Type 123

[RUBIO RUBIO, JOSÉ JAVIER]

Max,

If you couldn't get access to the TESS HVAC library, it might be possible to code the coil you need in FORTRAN. However, it would be much easier for you if your boss buys the TESS HVAC library in order to use the Type508.

Regards,

José Javier Rubio Rubio.

-----Mensaje original-----
De: TRNSYS-users <trnsys-users-bounces at lists.onebuilding.org> En nombre de Max Philipp Krebs via TRNSYS-users
Enviado el: jueves, 7 de octubre de 2021 21:44
Para: TRNSYS users mailing list at OneBuilding.org <trnsys-users at lists.onebuilding.org>
CC: Max Philipp Krebs <M.Krebs at stud.hs-esslingen.de>
Asunto: Re: [TRNSYS-users] Modelling a cooling coil Type 123

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
>>
>>
>> _______________________________________________
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>> g
>
> --
> ***************************
> 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
>
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