[esp-r] Re: validation of ESP-r according to EN 15265 and EN 15255

[Georgios Kokogiannakis]

Dear Gunter,

I have worked on the ESP-r's modelling of the 15265 tests during the last 
month or so. I have completed the tests and it was necessary to develop 
specific code to deal with two parts of the specifications:
1) to impose global solar radiation on vertical west facing surfaces
2) to account for time shifting of all schedules (including heating and 
cooling setpoints) between summer and winter.

The code is only in my branch and it will probably be in the next official 
release of ESP-r. 
However, to complete the tests I am puzzled with another point in the 
specifications and here is where I need your advice (or the advice of someone 
who is familiar with these specifications):

-I can not figure out the optical properties for ESP-r based on what I read in 
this Standard. There are two types of glazing (shaded double and just double) 
and the Standard defines transmittance, absorptance and reflectance of the 
window glazing components plus the g-value. However, it also says that all 
these solar parameters are considered as independet of the solar angle!!! I 
will have to use WIS or WINDOW5 to get the angular data for ESP-r but I am 
not sure how to interpret the specifications. Can you advise me on this (or 
better: can you send me the angular data for these glazing systems)? These 
tests seem to be very sensitive on the type of optics used.

If I figure out the details on the optics I can make sure that the next 
version of ESP-r includes the required code for these tests and that ESRU 
will publish a report for your needs.

However, I am not aware if there is anybody working on the 15255 (the other 
Standard that you mention). 

Regards,
Georgios



On Tuesday 25 November 2008 12:55, Pueltz, Gunter wrote:
> Dear ESRUs,
>
> in respect of energy efficincy the indoor quality of buildings can be
> evaluated according to EN 15251.
> This evaluation includes thermal comfort in winter and thermal comfort
> in summer - and some additional criteria, e.g. indoor air quality,
> lighting quality, etc.
>
> Concerning the thermal comfort EN 15251 proposes room based (zonal)
> thermal simulations for the prediction of room temperatures.
> But EN 15251 requires thermal simulation tools (like ESP -r), which
> have been validated according to European Standards EN 15265 and EN 15255
> (see chapter 8.3.1 of EN 15251:2007).
> Due to these requirements of EN 15251 my questions:
> - Has ESP-r been validated to these test cases in EN 15265 and EN 15255 ?
> - In case of is an official validation certificate for ESP-r available
> from ESRU ?
>
> Your answers might be interesting for several users of ESP-r, which are
> included into certification processes for sustainable buildings.
>
> Kind regards,
> Gunter
>
> --
> Dr. 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
>
> HRB München 86143
> Geschäftsführer: Bernd Grözinger, Dr. Edwin Schorer, Norbert Suritsch
>
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