[esp-r] Re: Simple models (single lumped capacitance per zone)

[Jon Hand]

This question could be interpreted in different ways.  Does the phrase 'simple model'
refer to a simple thermal zone, or to simple zone geometry, or a simple representation
of a HVAC system?

If the question is about a simple representation of HVAC system then this
is possible via ideal zone controls. An ideal control specifies what is being
sensed, it specifies where the flux is applied (e.g. at the air node or at
a node in a construction, a mix radiant source) as well as a control logic to apply (e.g. On/Off,
PI, PID, fuzzy logic).  In this case you do not specify the full details of
the equipment/components to be used but how they react with the room.

This abstract approach is great for trying out ideas and seeing how well demand and
supply can be matched.

There is a chapter about this in the ESP-r Cookbook, there are dozens of
exemplar models.

Regards, Jon Hand
________________________________________
From: esp-r-bounces at lists.strath.ac.uk [esp-r-bounces at lists.strath.ac.uk] On Behalf Of José Agustín Candanedo [tincandanedo at gmail.com]
Sent: 28 February 2010 19:16
To: esp-r at lists.strath.ac.uk
Subject: [esp-r]  Simple models (single lumped capacitance per zone)

Hi,

I understand that it is possible in ESP-r to create simple models, for HVAC controls, having a single lumped capacitance per zone.
Could anybody kindly provide more details about this feature?
Thank you in advance for your help,

José