[esp-r] Building embedded radiative cooling/heating

[Pueltz, Gunter]

Dear Aziz,

is the transient 2D-radiant cooling/heating model, which has
been developed by you, included in the new version 11.2 of ESP -r ?

Can this model be used not only for suspended radiative cool paneels,
but also for a "slab cooling" ? 
Slab cooling defined as water pipes integrated in the concrete layer of
a ceiling, see attached figure. 

Regards,
Gunter 

--
Gunter Pültz

Müller-BBM GmbH
Robert-Koch-Straße 11
82152 Planegg
Telefon +49 (0)89 85602 - 336
Telefax +49 (0)89 85602 - 111
http://www.MuellerBBM.de 

> -----Original Message-----
> From: Laouadi, Aziz [mailto:Aziz.Laouadi at nrc-cnrc.gc.ca]
> Sent: Wednesday, February 11, 2004 6:57 PM
> To: 'esp-r at strath.ac.uk'
> Subject: RE: [ESP-r] Building embedded cooling/heating
> 
> 
> 
> Dear Christian,
> 
> There are different ways in simulating radiant heating or 
> cooling systems in
> ESP-r, ranging from very simple to detailed models. I'll just 
> list some of
> them:
> 
> 1- fixed node temperature method: create a fictitious zone 
> with an imposed
> control so that the air zone temperature is equal to the mean pipe
> temperature.  for more details consult the RADTEST 
> methodology of the IEA
> task 22.
> 
> 2- fixed node heat injection method: create the building 
> model, and locate
> the piping position within the construction.  Use the fixed 
> heat injection
> control in esp-r to impose a heat flux on that node.  While 
> this method
> predicts well the amount of heat going to the space, it does 
> not, however,
> tell a clue on the energy-source side (e.g. boiler or 
> chiller) whether or
> not it meets the energy demand.
> 
> 3- fixed node heat injection coupled with a plant network: this one is
> similar to 2, except that it uses a plant network to 
> calculate the amount of
> heat injected in the node.  To do so, create a plant network 
> (e.g., boiler,
> piping, pump, etc.) and use the containment heat loss of a 
> component (e.g.,
> piping) and link it to the node in the construction where the 
> pipe resides.
> To my knowledge the containment heat loss has not been 
> implemented in ESP-r
> (ESRU staff may have more info on this).
> 
> 3- Use a detailed method that I developed for ESP-r. This 
> method uses a new
> plant component model for radiant heating/cooling systems.  
> The method uses
> a 2-D analytical model to compute the node temperature as a 
> function of the
> heat source input and the building heat loss.  You may consider the
> following paper for more details on the model.  However, the 
> radiant plant
> component is not right now in the source distribution of 
> ESP-r.  I hope
> within the upcoming months, it will be in  the distribution 
> source of esp-r.
> 
> Paper:
> 
> Laouadi, A. "Development of a radiant heating and cooling 
> model for building
> energy simulation software," Building and Environment, 39, 
> (4), April,  pp.
> 421-431, Apr, 2004 
> (NRCC-46099) 
> <http://irc.nrc-cnrc.gc.ca/fulltext/nrcc46099/>
> 
> 
> 
> 
> Dr. Abdelaziz (Aziz) Laouadi
> Research Officer
> Indoor Environment Research Program
> Institute for Research in Construction
> National Research Council of Canada
> 1200 Montreal Road, Building M-24
> Ottawa, Ontario, Canada, K1A 0R6
> Tel.:  (613) 990 6868;	Fax:  (613) 954 3733
> Email: Aziz.Laouadi at nrc-cnrc.gc.ca 
> Web: http://irc.nrc-cnrc.gc.ca/ie/light/skyvision/
> 
> 
> 
> -----Original Message-----
> From: Christian Martin Mølholm [mailto:s974606 at student.dtu.dk]
> Sent: Monday, February 09, 2004 3:16 AM
> To: esp-r at strath.ac.uk
> Subject: [ESP-r] Building embedded cooling/heating
> 
> 
> 
> Dear all!
> 
> We are 2 guys doing a study in building embedded 
> heating/cooling primary in
> concrete slabs. We are going to do some field measurements in 
> full-scale and
> may do modelling in esp-r. But we need some help and ideas 
> how to make a
> model in esp-r. 
> Are there anyone who can help us!  Right now we are 
> intermediate users in
> esp-r.
> 
> thank you.
> 
> Niels & Christian
> 
> 

-------------- next part --------------
A non-text attachment was scrubbed...
Name: slab-cooling.png
Type: application/octet-stream
Size: 97918 bytes
Desc: not available
Url : http://lists.strath.ac.uk/archives/esp-r/attachments/20061207/c599af2d/attachment-0001.obj