[esp-r] Re: Exhaust air converging from more than two zones.

[Achim Geissler]

Dear Dimitrios

I have not tried this with a plant network myself yet, no. Only with an air flow network. In a plant network I have to date only merged a multitude of liquid pipes - not to a mixing box, though. Anyway, the process was to use a series of merging pipes until only one ending was left. This worked well. 

What do you mean by "create the connections […] in the control file"? The simulation starts, the plant network is accepted, only the flow results show that not all connections are used? That sounds strange - what / where is the "driving force" in your network? Are you entirely sure that every branch should be used? Do you also have an air flow network defined?

There is also a controller available with which you can average temperatures to control against (I have only used it with two or three temperatures, though).

Good luck!

Best
Achim



> -----Ursprüngliche Nachricht-----
> Von: Dimitrios Sfakianakis [mailto:dimitrios.sfakianakis at strath.ac.uk] 
> Gesendet: Dienstag, 28. Mai 2013 14:25
> An: Geissler Achim
> Betreff: RE: [esp-r] Exhaust air converging from more than two zones.
> 
> Dear Achim,
> 
> Thank you for your reply and your constant support in all kinds of modelling issues.
> 
> I tried connecting more than one exhaust ducts to a thermal zone acting as a converge, without any luck. Although I manage to create the connections of multiple exhausts to the single zone in the control file, when I run a simulation I see that only one connection was actually established (the last one defined). Have you ever tried anything similar? If so, which approach did you use to connect more than one ducts to a zone?
> 
> Kind regards,
> 
> Dimitrios Sfakianakis
> 
> 
> From: Geissler Achim [achim.geissler at fhnw.ch]
> Sent: 23 May 2013 18:05
> To: Dimitrios Sfakianakis; 'esp-r at lists.strath.ac.uk'
> Subject: AW: [esp-r] Exhaust air converging from more than two zones.
> 
> Dear Dimitrios
> 
> a possible solution is to define the mixing box as a thermal zone and connect this to your plant as desired.
> 
> Cheers
> Achim
> 
> 
> Von: esp-r-bounces at lists.strath.ac.uk [mailto:esp-r-bounces at lists.strath.ac.uk] Im Auftrag von Dimitrios Sfakianakis
> Gesendet: Donnerstag, 23. Mai 2013 16:48
> An: 'esp-r at lists.strath.ac.uk'
> Betreff: [esp-r] Exhaust air converging from more than two zones.
> 
> Dear list,
> 
> I have a model with 10 zones and have set up a plant component network comprised by a mixing box, cooler, heater and a fan (much like the 'Component based HVAC' exemplar) . Air is supplied and exhausted from each zone and converges to a mixing box (converge) where a temperature sensor is located, according to which the operation of the heater and the cooler are controlled. Since the mixing box component only has two inlets I cannot use it to converge multiple exhaust ducts. Is there a way to converge all exhaust ducts to a single mixing box component in order to sense an 'average' temperature?
> 
> Kind regards,
> 
> -
> 
> Dimitrios Sfakianakis
> 
> 

achim.geissler at intergga.ch