TY - RPRT
T1 - WINDOW 6.2/THERM 6.2 Research Version User Manual
Y1 - 2008/01//
SP - 1
EP - 126
A1 - Robin Mitchell
A1 - Christian Kohler
A1 - Joseph H. Klems
A1 - Michael D. Rubin
A1 - Dariush K. Arasteh
A1 - Charlie Huizenga
A1 - Tiefeng Yu
A1 - Dragan C. Curcija
AB - WINDOW 6 and THERM 6 Research Versions are software programs developed at Lawrence Berkeley National Laboratory (LBNL) for use by manufacturers, engineers, educators, students, architects, and others to determine the thermal and solar optical properties of glazing and window systems.WINDOW 6 and THERM 6 are significant updates to LBNL's WINDOW 5 and THERM 5 computer program because of the added capability to model complex glazing systems, such as windows with shading systems, in particular venetian blinds. Besides a specific model for venetian blinds and diffusing layers, WINDOW 6 also includes the generic ability to model any complex layer if the Transmittance and Reflectance are known as a function of incoming and outgoing angles.The algorithms used in these versions of the programs to determine the properties of windows with shading layers are relatively new and should be considered as informative but not definitive.As such, for windows with shading layers, the results are intended for research purposes only. Pending further validation efforts, results for windows with sh ading layers should not be used for NFRC certified calculations of design decisions in real buildings.All calculations for products without shading layers are identical to those from WINDOW 5.2.WINDOW 6 Research Version includes all of the WINDOW 5 capabilities with the addition of shading algorithms from ISO15099 which are incorporated into the program, as well as an extension of those algorithms with the matrix calculation method.THERM 6 Research Version includes all of the THERM 5 capabilities with the addition of being able to import and model WINDOW 6 glazing systems with shading devices. Those THERM 6 files with shading devices can them be imported into the WINDOW 6 Frame Library and whole windows with shading devices can then be modeled in WINDOW 6.
PB - Lawrence Berkeley National Laboratory
CY - Berkeley
U1 - Windows and Daylighting Group

U2 - LBNL-813E
ER -
TY - JOUR
T1 - Window Optics
JF - Solar Energy
Y1 - 1997/
SP - 149
EP - 161
A1 - Michael D. Rubin
A1 - Klaus von Rottkay
A1 - Rebecca Powles
AB - Optical and radiative properties of glazing materials are primary inputs for determination of energy performance in buildings. This paper revisits the problem and reformulates the calculations to encompass a variety of solutions to practical problems in window optics. Properties of composite systems such as flexible films applied to rigid glazing and laminated glazing can be predicted from measurements on isolated components in air or other gases. Properties of a series of structures can be generated from those of a base structure. For example, the measured properties of a coated or uncoated substrate can be extended to a range of available substrate thicknesses without the need to measure each thickness. Similarly, a coating type could be transferred by calculation to any other substrate. A simple monolithic model for extrapolating from normal properties to oblique properties is shown to have sufficient accuracy for the purpose of annual energy performance calculations. A process is initiated to develop a reliable method for determination of effective indices suitable for more detailed spectral and directional optical calculations.
VL - 62
U1 - Windows and Daylighting Group

U2 - LBNL-39911
ER -
TY - RPRT
T1 - Window 4.0: Documentation of Calculation Procedures
Y1 - 1993/
A1 - Elizabeth U. Finlayson
A1 - Dariush K. Arasteh
A1 - Charlie Huizenga
A1 - Michael D. Rubin
A1 - M. Susan Reilly
AB - WINDOW 4.0 is a publicly available IBM PC compatible computer program developed by the Building Technologies Group at the Lawrence Berkeley Laboratory for calculating the thermal and optical properties necessary for heat transfer analyses of fenestration products. This report explains the calculation methods used in WINDOW 4.0 and is meant as a tool for those interested in understanding the procedures contained in WINDOW 4.0. All the calculations are discussed in the International System of units (SI).
U1 - Windows and Daylighting Group

U2 - LBL-33943
ER -