[TRNSYS-users] Simplified heating and cooling based on operativetemperature

[Erik Olsen]

Maarten, Sabine,

This is accomplished by a reverse approach.  Set the heating or cooling 
air setpoint temperature with type 56 as an input.  Then, you can use an 
equation in the dck to calculate this variable setpoint temperature 
(e.g. the air temperature required to achieve your operative temperature 
setpoint, based on the current mean radiant temperature).

Erik

Erik Olsen, PE
212 219 2255 | olsen at transsolar.com
Transsolar Inc. | 134 Spring St. Suite 601 | New York, NY 10012

Transsolar Climate Engineering
Technical consulting for energy efficiency and environmental quality in 
buildings
New York - Stuttgart - Munich


Sabine Jansen - BK wrote:
> Dear all,
>  
> I am also interensted in that question.
>  
> The only way I know now how to solve this is by using a type 
> (controller, type 2 or thermostat, type 8) outside type 56. The the 
> operative zone temperature must be connected to this type (e.g. 2b and 
> creating a schedule elsewhere, in an equation solver), and the heating 
> must be defined as a limited power connected to an input, which is 
> then the output of the control type (type 2 or type 8).
>  
> One problem with this approach is that I cannot use a very large 
> heating power anymore, since that causes the controller to switch on 
> and off. Thus the heating power must be determined using the ideal 
> heating, based on air temperature, first.
>  
> If there is an easier way, I am also very happy.
>  
>  
> Kind regards,
>  
> Sabine Jansen
>
> ------------------------------------------------------------------------
> *Van:* Maarten Sourbron [mailto:Maarten.Sourbron at mech.kuleuven.be]
> *Verzonden:* do 18-2-2010 13:53
> *Aan:* trnsys-users at cae.wisc.edu
> *Onderwerp:* [TRNSYS-users] Simplified heating and cooling based on 
> operativetemperature
>
> Dear all,
>
> The simplified heating and cooling in Trnbuild is now comparing the zone
> AIR temperature with the given set points.  Is there a way to change
> this (or another controller model) to have the zone OPERATIVE
> temperature compared with the set points?
>
> Kind regards,
>
> Maarten Sourbron
>
> --
> Departement Werktuigkunde-Department of Mechanical Engineering
> Katholieke Universiteit Leuven
> Celestijnenlaan 300A bus 2421
> 3001 Heverlee (Leuven)
> T : 0032 (0)16 32 28 73
> F : 0032 (0)16 32 29 85
> E : Maarten.Sourbron at mech.kuleuven.be
>
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