[esp-r] Re: Zone control sensors - cannot change with control law?

[Achim Geissler]

Hi Lukas

 

Recently (1.12.2009) there was a similar question on the forum, I think.
Aizaz gave this answer:

 

==

There has been an extension to day type facility recently and is available
in the current version. One can define day types in addition to legacy
week/sat/sunday from context>calendar>day types. This should ideally be done
before defining controls and operations information. Once daytype
"summerday" 

and "winterday" are defined in the calendar (and associated with Julian days
of the year), different control laws and schedules can be associated in the
same control loop as with week/sat/sunday.

==

 

Regards

Achim

 

 

From: esp-r-bounces at lists.strath.ac.uk
[mailto:esp-r-bounces at lists.strath.ac.uk] On Behalf Of Lukas Swan (Dal)
Sent: Donnerstag, 7. Januar 2010 22:00
To: esp-r at lists.strath.ac.uk
Subject: [esp-r] Zone control sensors - cannot change with control law?

 

Hello-

 

I am modeling a house that has multiple zones and both heating and cooling.

Each zone has an independent electric baseboard convective heaters and
independent thermostats (i.e. individual zone sensor and actuation).

There is also a central cooling system that distributes to each zone
proportionally (volume based) and is controlled by a single thermostat on
the first floor level (i.e. central sensor and distributed actuation).

 

I was planning on modeling this using zone control loops.

Heating during heating months would be completed using a basic controller
for each zone with the sensor and actuator at that specific zone's air
point.

Cooling during other months would be completed using a master/slave scheme
(Laws #1 and #21), where slave zones would then reference the master zone
air point as the sensor.

 

However, it appears that the specification of the sensor and actuator are
outside the scope of a particular period, and are fixed for a given control
loop.

Also - it appears that each zone can only reference one control loop.

 

Does anyone have a solution to this problem?

 

Thanks,

Lukas Swan

Dalhousie Univ.

Canada

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