[TRNSYS-users] Turning ON-OFF Active system

[David BRADLEY]

Łukasz,

  My apologies for the delay in responding; we've been moving offices 
and so I have gotten behind.

  Controlling the active layer with operative temperature is definitely 
something that I have done. Set up the operative temperature as an 
output of your Type56 model and then in the Studio, implement a 
thermostat that watches the operative temperature and compares it to 
your set point value. The thermostat model will then be connected to a 
pump (and perhaps a boiler or a heat pump as well). Set the inlet 
temperature and mass flow rate of liquid to your active layer as inputs 
to Type56. In the Studio, the pump's output flow rate and temperature 
will be the inputs to the Type56 active layer.

kind regards,

  David



On 08/06/2018 08:17, Łukasz Wątły via TRNSYS-users wrote:
> Dear David,
>
> Thank you very much for your reply.
>
> However, I still would like to ask about one thing, since I am not 
> much into this aspect. My goal is to control the flow rate of Active 
> Layer (ceiling heating system) within the specified range of operative 
> temperature. It means that I would like to switched off the active 
> layer when the T_operative is higher than given value and then switch 
> on again when the temperature drops below other value.
>
> Thus, I wonder how is it possible to change variables that are defined 
> in TRNBuild (flow rate) in TRNSYS? Do you have any experience with that?
>
> Kind regards,
> Lukasz
>
>
> 2018-08-01 16:14 GMT+02:00 David BRADLEY <d.bradley at tess-inc.com 
> <mailto:d.bradley at tess-inc.com>>:
>
>     Łukasz,
>
>       There aren't controls available within TRNBuild. Make the inlet
>     temperature and flow rate to the active layer into inputs and then
>     you can use whatever controls you like in the Studio to turn pumps
>     and other devices on and off and thus control the temperature in
>     the space. Make sure to use a short timestep (1-5 minutes) or the
>     building will not stay reliably near its set points.
>
>     kind regards,
>
>      David
>
>
>
>     On 07/31/2018 12:12, Łukasz Wątły via TRNSYS-users wrote:
>>     Dear All,
>>
>>     I am writing to you, since I would like to ask if there is a
>>     possibility to control the Active Layer - radiant ceiling heating
>>     system so that I could trigger it on\off whenever the airnode
>>     temperature is below or above the certain limit? Is there an
>>     option to do it in TRNBuild?
>>
>>     I would be grateful for any guidance.
>>
>>     Thanks in advance for your reply.
>>
>>     Kind regards,
>>     Lukasz Watly
>>
>>
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>
>     -- 
>     ***************************
>     David BRADLEY
>     Principal
>     Thermal Energy Systems Specialists, LLC
>     22 North Carroll Street - suite 370
>     Madison, WI  53703 USA
>
>     P:+1.608.274.2577
>     F:+1.608.278.1475
>     d.bradley at tess-inc.com <mailto:d.bradley at tess-inc.com>
>
>     http://www.tess-inc.com
>     http://www.trnsys.com
>
>
>
>
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-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI  53703 USA

P:+1.608.274.2577
F:+1.608.278.1475
d.bradley at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com

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