Re: [TRNSYS-users] radiation and shadow, type 56

Dear Marion and Others

I try to improve my file on myself. It seems to me that it is prepared well, but results are still strange:

Building with surrounding buildings has only a little higher heating demand but there is no difference in solar gains for each version (with and without surrounding buildings).

I use ntype 74 for solar radiation gains.

I enclose .bui files and .idf files exported form TRNBuild (Mnr8_alone is from MNr8, and Mnr8_shading is from Mnr8_3D_sh)

I will be grateful for your time and hints!

Regards,

Karol

------------------------------------------------

Karol Bandurski MSc.

Institute of Environmental Engineering

Poznan University of Technology

www.ee.put.poznan.pl

www.put.poznan.pl

From: Marion Hiller [mailto:hiller@transsolar.com]
Sent: Tuesday, December 11, 2012 12:59 PM
To: karol.bandurski
Cc: trnsys-users
Subject: AW: radiation and shadow, type 56

Karol,

No this is impossible.

However, the bui files aren’t the same, especially the geometric part of the Mnr8_sh contains only geometric information of 2 zones

BATHROOM and HALL.

Also the calculated volume isn’t the same.

It looks like all the zones with the GEOMODE=MIXED are missing. How did you create shading file?

I repaired you shading file concerning the geometry. Are the results now ok?

Best,

Marion

Dipl.-Ing. Marion Hiller
TRANSSOLAR: KlimaEngineering - Technologien für energieeffizientes Bauen und Nutzerkomfort in Gebäude
Munich - New York - Stuttgart + 49.711.67976.0

Transsolar Energietechnik GmbH, Curiestrasse 2, 70563 Stuttgart
Amtsgericht Stuttgart - HRB 23347, Steuernummer 99073/00911, USt-IdNr.: DE152272639

Geschäftsführer: Dipl.Ing. Matthias Schuler, Dipl.Ing. Thomas Auer, Dipl.Phys. Stefan Holst, Prof. Dipl.-Ing. Bleicher

Von: Karol Bandurski [mailto:karol.bandurski@put.poznan.pl]
Gesendet: Dienstag, 11. Dezember 2012 00:24
An: trnsys-users@cae.wisc.edu; Marion Hiller
Betreff: radiation and shadow, type 56

Dear All,

I have two .bui files of the building. The first file is assumes that there is no buildings next to consider one( Mnr8), the second file contain shadow zone of surrounding buildings (Mnr8_sh).

The energy demand are higher for version with building shadow zone –it seems OK. But I am looking for solar radiation that reach building windows in each case, so I use NTYPE 69 or 74 (it is ok???). And the problem is that the building with shadow has higher values of those NTYPE then the building without shadow. How it is possible???

I will be grateful for any hints!

Regard,

Karol