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Re: window with on glazing?

Dear Mohammed,


I’m using Prebid 3.1, and I do not know how can I add a window with
no glazings on an external wall. I am Studying a poultry house in
which windows do not have glazings.
TRNSYS 15 window library includes an "open window" (Window ID 10001 in the German library). You should be able to use it with Prebid 3.1 too. I attached the section of the library that you should add to your w4-lib.dat file (please make a backup copy and refer to your manual before doing this!).

The window ID 10001 in TRNSYS 15 German library has a transmittance of 1, so Type 56 will calculate the radiation transmitted through the window accurately. You will still have to take into account the infiltration through that window. You can calculate it outside Type 56 and use a special infiltration type, for example. If you use TRNFLOW (with TRNSYS 15), you can define the window in TRNFLOW and get an accurate calculation of the natural ventilation as well.

Good luck,

Michaël Kummert



--
_________________________________________________________

Michaël Kummert

Solar Energy Laboratory - University of Wisconsin-Madison
1303 Engr Res Bldg, 1500 Engineering Drive
Madison, WI 53706

Tel: +1 (608) 263-1589
Fax: +1 (608) 262-8464
E-mail: kummert@engr.wisc.edu

SEL Web Site: http://sel.me.wisc.edu
TRNSYS Web Site: http://sel.me.wisc.edu/trnsys

WINDOW 4.1  DOE-2 Data File : Multi Band Calculation

Unit System : SI
Name        : TRNSYS 14.2 WINDOW LIB
Desc        : Keine Glasscheibe = offen
Window ID   : 10001
Tilt        : 90.0
Glazings    : 1
Frame       : 11                       2.270
Spacer      :  1 Class1                2.330  -0.010   0.138
Total Height: 1219.2 mm
Total Width :  914.4 mm
Glass Height: 1079.5 mm
Glass Width :  774.7 mm
Mullion     : None
Gap        Thick   Cond  dCond    Vis   dVis   Dens   dDens     Pr     dPr
1              0       0      0      0      0      0       0      0       0
2              0       0      0      0      0      0       0      0       0
3              0       0      0      0      0      0       0      0       0
4              0       0      0      0      0      0       0      0       0
5              0       0      0      0      0      0       0      0       0
Angle     0    10    20    30    40    50    60    70    80    90 Hemis
Tsol  1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 0.998 0.000 0.998
Abs1  0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.001 0.000 0.001
Abs2      0     0     0     0     0     0     0     0     0     0     0
Abs3      0     0     0     0     0     0     0     0     0     0     0
Abs4      0     0     0     0     0     0     0     0     0     0     0
Abs5      0     0     0     0     0     0     0     0     0     0     0
Abs6      0     0     0     0     0     0     0     0     0     0     0
Rfsol 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 1.000 0.001
Rbsol 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 1.000 0.001
Tvis  1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 0.000 1.000
Rfvis 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Rbvis 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
SHGC  1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 0.000 1.000
SC: 1.0



Layer ID#         9052        0        0        0        0        0
Tir              0.000        0        0        0        0        0
Emis F           1.000        0        0        0        0        0
Emis B           1.000        0        0        0        0        0
Thickness(mm)    0.001        0        0        0        0        0
Cond(W/m2-C     )999.0        0        0        0        0        0
Spectral File     None     None     None     None     None     None

Overall and Center of Glass Ig U-values (W/m2-C)
Outdoor Temperature                 -17.8 C      15.6 C      26.7 C      37.8 C
Solar      WdSpd  hcout hrout  hin
(W/m2)     (m/s)     (W/m2-C)
   0        0.00  12.25  3.42  8.23  5.27 5.27  4.95 4.95  4.94 4.94  5.53 5.53
   0        6.71  25.47  3.33  8.29  6.26 6.26  5.73 5.73  5.68 5.68  6.46 6.46
 783        0.00  12.25  3.49  8.17  5.25 5.25  4.58 4.58  5.24 5.24  5.66 5.66
 783        6.71  25.47  3.37  8.27  6.25 6.25  5.53 5.53  5.95 5.95  6.57 6.57