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[BLDG-SIM] Special Controller
At 11:16 AM 2/6/2004 +0100, Daniel Mugnier wrote to the BLDG-SIM list:
Working on a solar hot water system, I have the project to manage the
back-up use according to some external & evolutive conditions (solar
irradiation, load profile of the last days & hours, atmospheric pressure...).
A special algorithm (fuzzy logic) will be used with several equations,
using values from the inputs (instantenous and older), to preventively
start & stop the back up.
I would like to know whether a good idea is to model this controller with
TRNSYS 15 using the TYPE 66 and the EES solver or to use any other way
such as the "Delayed inputs controller" (taken from HVAC library (TESS)) ???
Daniel,
While you could use the TRNSYS/EES connection and/or the TESS delayed input
controller, I would strongly recommend that you write your own component to
model your fuzzy controller. It's easy to add your own models to TRNSYS
and in this way the controller does EXACTLY what you need it to do. You
could pass in the solar radiation, load profile, atmospheric pressure, and
store any values you need from previous timesteps for your
algorithm. Refer to the source code of relevant components for hints and
ideas on your model.
Good luck,
Jeff
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Thermal Energy System Specialists (TESS)
Jeff Thornton 2916 Marketplace Drive
Principal Suite 104
Phone: (608) 274-2577 Madison WI 53719
Fax: (608) 278-1475 USA
E-mail: thornton@xxxxxxxxxxxx
Web Page: www.tess-inc.com
"Providing software solutions for today's energy engineering projects"
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