Re: [EnergyPlus_Support] PID controllers

[Philip Haves <phaves@xxxxxxx>]

Maria,

EnergyPlus does not explicitly simulate any kind of feedback controller: 
proportional, PI or PID.  What CONTROLLER:SIMPLE and other controllers 
in EnergyPlus do is to enable the simulation of idealized control in 
which HVAC equipment with no dynamics closely follows the set-point, 
subject only to capacity constraints.  This approach enables the 
efficient simulation of energy performance since the timestep can be 
long relative to the closed loop dynamic response time of the real 
equipment.  This approach does not allow the use of dynamic models of 
HVAC components in EnergyPlus.

There are a number of simulation environments that allow the explicit 
modeling of HVAC dynamics and control; one is SPARK (a free download 
from http://simulationresearch.lbl.gov/).  A unique attribute of SPARK 
is that it is in the process of being integrated with EnergyPlus, the 
aim being to allow selected components and subsystems to be simulated on 
short timescales within an EnergyPlus simulation.  I don't know whether 
this capability will be available soon enough to meet your needs.

Phlip Haves
LBNL

Maria Eugênia de Almeida Freitas wrote:

>Dear Mike,
> 
>Thank you for your help.
>
>I am a undergraduate student on Process Control and I have just started 
>to use EnergyPlus.
> 
>It is possible to develop dynamic models for HVAC components into 
>EnergyPlus?
>I need this model to determine the control characteristics
>Do you know if there is a PID controllers in EnergyPlus?
> 
>Who has developed HVAC components?
>And the PID controllers?
> 
>Thank you in advance.
> 
>Best regards.
>Maria Eugênia
>
>
>
>
>
>The primary EnergyPlus web site is found at:
>http://www.energyplus.gov
>
>The group web site is:
>http://groups.yahoo.com/group/EnergyPlus_Support/
>
>Attachments are not allowed -- please post any files to the appropriate folder in the Files area of the Support Web Site.
> 
>Yahoo! Groups Links
>
>
>
> 
>
>
>  
>



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