Solar-optical properties of multilayer fenestration systems
Conference
·
OSTI ID:6489197
The bidirectional solar-optical properties of a fenestration system are necessary to accurately determine its luminous and thermal performance. Bidirectional transmittance and reflectance can be determined experimentally for fenestration systems of arbitrary complexity using a scanning radiometer, after which the total directional absorptance can be calculated. However, for the case of multilayer fenestration systems, this approach does not provide information about the net absorptance of each layer. Moreover, the same layers can be ordered in more than one way, resulting in fenestration systems with different solar-optical properties, the determination which requires additional experimental procedures. This paper describes a mathematical model for the calculation of the bidirectional solar-optical properties of multi-layer fenestration systems, using the bidirectional solar-optical properties of each layer. The model is based on the representation of the bidirectional solar-optical properties using matrices. Matrix operations are then used to calculate the bidirectional solar-optical properties of any combination of layers, considering the interreflections between them. This approach offers two advantages: (1) the reduction of the experimental procedures to those required for the determination of the bidirectional transmittance and reflectance of fenestration layers, rather than complete fenestration systems, and (2) the determination of the net absorptance of each layer as part of the fenestration system, rather than the total absorptance of the complete fenestration system. 7 refs., 4 figs., 1 tab.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 6489197
- Report Number(s):
- LBL-20543; CONF-861109-3; ON: DE89006664
- Country of Publication:
- United States
- Language:
- English
Similar Records
A new method for predicting the solar heat gain of complex fenestration systems: II, Detailed description of the matrix layer calculation
A new method for predicting the solar heat gain of complex fenestration systems: 1, Overview and derivation of the matrix Layer calculation
Measurement of bidirectional optical properties of complex shading devices
Conference
·
Fri Oct 01 00:00:00 EDT 1993
·
OSTI ID:10179398
A new method for predicting the solar heat gain of complex fenestration systems: 1, Overview and derivation of the matrix Layer calculation
Conference
·
Fri Oct 01 00:00:00 EDT 1993
·
OSTI ID:10166417
Measurement of bidirectional optical properties of complex shading devices
Conference
·
Sat Dec 31 23:00:00 EST 1994
·
OSTI ID:70819
Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320107* -- Energy Conservation
Consumption
& Utilization-- Building Systems-- (1987-)
DAYLIGHTING
ENERGY ANALYSIS
ENERGY CONSERVATION
LIGHT TRANSMISSION
MATHEMATICAL MODELS
OPENINGS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
SOLAR RADIATION
STELLAR RADIATION
WINDOWS
320107* -- Energy Conservation
Consumption
& Utilization-- Building Systems-- (1987-)
DAYLIGHTING
ENERGY ANALYSIS
ENERGY CONSERVATION
LIGHT TRANSMISSION
MATHEMATICAL MODELS
OPENINGS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
SOLAR RADIATION
STELLAR RADIATION
WINDOWS