[esp-r] Re: EPBD implementation in Portogual and Phase change material

Thu Oct 26 18:23:13 BST 2006

meant to say 5 nodes for the second case (two 50mm brick layers) - not 6!

On Thursday 26 October 2006 18:01, Georgios Kokogiannakis wrote:
> Nuno,
>
> The PCM options worked fine at my computer. Simulation and results analysis
> also run fine.
> You can also select any node you prefer for your constructions. Each layer
> has 3 nodes (e.g inside, middle and outside). Number 1 node is the outside
> node of the outside layer for the specific construction.
> A simple way to increase the number of nodes of your construction is by
> increasing the number of layers and reduce the thickness of each layer. For
> example, if you have one 100mm brick layer you will normally get 3 nodes
> for this layer. By creating two 50mm brick layers you will get 6 nodes for
> the same construction.
> All this must be correct and I hope they are helpful to you.
>
> Regards,
>
> Georgios
>
> > >>Some days ago I post a message regarding problems with phase change
> > >>materials, I have already cross my initial problems, it's seems that
> > >> the advanced materials file created with the model have one problem
> > >> writhing a value. But it works now.
> > >>
> > >>However I have another question. When modelling PCMs, its necessary to
> > >>define the layer properties in the multilayer constructions file, until
> > >>here no problems. But when I define the active material (PCM) in the
> > >>advanced components module it is necessary to define the node were it
> > >> is associated. Well my problem starts here. I have read that the
> > >> proper way of putting them in the layer is in the middle node but, the
> > >> system, by default, only define two nodes for each layer.
> > >>
> > >>How can I tell the system to define, unless 3 nodes in each layer? I
> > >> read too, that a better subdivision of the layer will increase
> > >> accuracy.
> >
> > Thanks in advance.
> >
> > Best regards,
> >
> > Nuno Fernandes
> >
> > ###################################################
> > Nuno Tiago Afonso Fernandes
> >
> > Universidade de Aveiro
> > Departamento de Engenharia Mecânica
> >
> > nuno.fernandes at mec.ua.pt
> > ###################################################
> > -----Original Message-----
> > From: Georgios Kokogiannakis [mailto:georgios at esru.strath.ac.uk]
> > Sent: segunda-feira, 23 de Outubro de 2006 18:20
> > To: Nuno Fernandes
> > Subject: Re: EPBD implementation in Portogual - calculation methods
> >
> > Dear Nuno,
> >
> > thanks very much for your reply. It will be useful to me if you have any
> > updates in the future regarding this.
> > For the ASHRAE 140-2004 I will say the same thing as at my previous
> > email. ESP-r is already included in the main publication of the standard
> > for the envelope/qualification tests. Just have a look at the original
> > publication of
> > this standard. For the HVAC tests, there might be an issue there because
> > there are only the 2 publications that I sent you the previous time. If
> > you read them you will see that not all of the results are there due to
> > size restrictions. They were done by Canadians (Kamel Haddad is a good
> > contact for
> > this). Maybe an official publication from ESRU for these tests might be
> > necessary. Let me know when your regulations are finalised and what kind
> > of report is needed. I will then talk with the guys in ESRU that could
> > arrange a
> > report and see how we can progress it in order ESP-r to be accredited in
> > Portugal.
> >
> > Kind regards,
> >
> > Georgios
> >
> > On Monday 23 October 2006 13:55, you wrote:
> > > Dear Georgios,
> > >
> > > I do remember our previous contact.
> > >
> > > Relatively to your question what I can say is that the translation of
> > > European directive to Portugal is official, however it just be
> > > practical appliance in 2007 (I think)....
> > >
> > > Relatively to the evaluation of energy demands (heating or cooling) of
> > > buildings there will be two allowed methods:
> > >
> > > -A simplified method based in a one zone model. This evaluation is
> > > calculated with a software (STE-2005) developed by INETI www.ineti.pt.
> > >
> > > -The detailed dynamic simulation method. Yes the ASHRAE 140-2004 tests
> > > still the criteria for the accreditation of the tools.
> > >
> > > The selection of one of these methods is based in the type of building
> > > and its area. But I can say that for large services buildings and
> > > buildings areas above 1000 sqr meters the detailed method is going to
> > > be obligatory. Well, these are the conclusions that I take from the
> > > legal document that translates the European directive. However, there
> > > still a lack of information about how these documents will work.
> > >
> > > Hope asks your questions. If not, just say.
> > >
> > > I hope Esp-r will be allowed.
> > >
> > > Still doesn't exist a report for Esp-r with ASHRAE 140?
> > >
> > > Sorry for my English ;)
> > >
> > > Kind regards,
> > >
> > > Nuno Fernandes
> > >
> > >
> > > ###################################################
> > > Nuno Tiago Afonso Fernandes
> > >
> > > Universidade de Aveiro
> > > Departamento de Engenharia Mecânica
> > >
> > > nuno.fernandes at mec.ua.pt
> > > ###################################################
> > > -----Original Message-----
> > > From: Georgios Kokogiannakis [mailto:georgios at esru.strath.ac.uk]
> > > Sent: domingo, 22 de Outubro de 2006 20:41
> > > To: Nuno Fernandes
> > > Subject: EPBD implementation in Portogual - calculation methods
> > >
> > > Dear Nuno,
> > >
> > > we contacted with each other in the past by email for one of your
> >
> > questions
> >
> > > in
> > > the esp-r list (please see previous email below). I was wondering
> > > whether you
> > > know what is the status of the EPBD implementation in Portugual. Are
> > > they going to allow dynamic simulation tools? If yes, are the ASHRAE
> > > 140-2004 tests still the criteria for the accreditation of the tools? I
> > > am asking because I read in one publication (of 2005) this:
> > > "Portugal will apply the monthly heat balance procedure to dwellings
> > > without
> > >
> > > air conditioning. Its original intention to allow a free choice of
> >
> > approved
> >
> > > simulation tools for other buildings is likely to be amended to make
> > > the CEN
> > >
> > > simplified dynamic method a “preferred option”. It is probable that
> > > their approval criterion will be ASHRAE 140."
> > >
> > > I would appreciate if you can let me know your opinion on the above
> > > statement
> > > and what are the final decisions in regards with this.
> > > Also, this website might be useful:
> > > http://www.p3e-portugal.com/index.asp but
> > > it is in Portuguese  and I can not get anything out of it.
> > >
> > > Kind regards,
> > >
> > > Georgios
> > >
> > > On Friday 07 April 2006 12:43, you wrote:
> > > > Mr Kokogiannakis
> > > >
> > > > Can you please send me the publication:
> > > >
> > > >
> > > >
> > > > -Strachan P.A., Kokogiannakis G. and Macdonald I.A. (2005),
> > > > ?Encapsulation of Validation Tests in the ESP-r Simulation Program?,
> > > > Building Simulation ?05, Montreal, Canada.
> > > >
> > > >
> > > >
> > > > Regards,
> > > >
> > > >
> > > >
> > > > Nuno Fernandes
> > > >
> > > >
> > > >
> > > >   Nuno Tiago Afonso Fernandes
> > > >
> > > >
> > > >
> > > >   Universidade de Aveiro
> > > >
> > > >   Departamento de Engenharia Mecânica
> > > >
> > > >                                      Campus Universitário de Santiago
> > > >
> > > >   3810-193 Aveiro
> > > >
> > > >   Portugal
> > > >
> > > >                                      Tel.: +351 234 370 830
> > > >
> > > >   nuno.fernandes at mec.ua.pt
> > > >
> > > >   www.ua.pt <http://www.ua.pt/>
>
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