[esp-r] Re: Is there any documentation on plant components?

[Ferguson, Alex]

Unfortunately, there is no concise documentation on ESP-r plant components.

Jan Hensen's thesis provides a general description of ESP-r plant modelling methodologies and describes several of the earlier plant component models, including the boiler model you're referring to:

ftp://ftp.strath.ac.uk/Esru_public/documents/PhD/hensen_thesis.pdf 

However, numerous models have been added to ESP-r since Hensen's dissertation. Many of these are documented in the theses and peer-reviewed papers presented on ESRU's website: 

http://www.esru.strath.ac.uk/publications.htm

If you have an interest in a plant component model for which no documentation seemingly exists, I suggest sending a note to this list. In most cases, somebody will be able to dig up a report or paper about it.

- Alex 

-----Original Message-----
From: esp-r-bounces at lists.strath.ac.uk [mailto:esp-r-bounces at lists.strath.ac.uk] On Behalf Of Gunnar Thöle
Sent: Tuesday, December 05, 2006 06:14
To: ESP-r mailing list
Subject: [esp-r] Is there any documentation on plant components?

Hello,

as a happy Esp-r user for building simulation i am now making my first
steps into plant networks.

The problem i have come across is this:

Which node of multi-node components do i connect my other components to?

I am working with the ESP-R standard plant database.
And, when using a boiler, for example, upon defining a component, i get
asked "Which node to connect to: a water node     b water node".
I already know that Esp-r models components as bodies of fluids which
are tightly connected.
I suspect that my 2-node-boiler ("non-condensing boiler + aquastat
control") is modelled as two bodies of fluids, seemingly both water.
But: Is there any documentation on which node is what?
Where do i get my hot water?
Where do i supply the cold water?

Or for other components like the 8-node radiator: Where do i connect it?

I couldn't find any obvious documentation. Looking at the plant database
with the database management module didn't really help in answering my
question...
Is there any documentation around, besides matrix coefficients in the 
plant database and one example of a wet central heating system?

Thank you,
Gunnar


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