A general method to evaluate the thermal impact of complex fenestration systems in building zones

作者：Bueno Bruno^*; Cejudo Lopez Jose M; Kuhn Tilmann E

来源：Energy and Buildings, 2017, 155: 43-53.

DOI：10.1016/j.enbuild.2017.08.055

• g-value
• Directional solar heat gain coefficient
• Complex fenestration system
• Bi-directional scattering distribution function
• Daylighting
• Building simulation
• Solar control
• EnergyPlus
• Radiance
• Fener

This paper presents a method to evaluate the thermal impact of complex fenestration systems on the energy balance of a building zone based on directional solar heat gain coefficients (DSHGC) and bi-directional scattering distribution functions (BSDF). The proposed methodology is presented as an alternative to layer-by-layer heat transfer models. An example of a layer-by-layer heat transfer model is the IS015099 as implemented in the EnergyPlus building simulation program. The IS015099 model relies on a number of assumptions that are not justified in the case of three-dimensional structures, air-permeable layers and deviations from ideal geometries, which are common features in commercial daylighting and solar-control systems. In this paper, the proposed methodology is implemented in the Fener simulation engine and compared with EnergyPlus for systems for which the assumptions of the IS015099 model are valid. Then, the Fener program is used to simulate the thermal behaviour of a zone with a fenestration system that contains sawtooth-shaped retro-reflecting interior blinds, which cannot be directly modelled with the IS015099 model. The impact of different control strategies on the thermal performance of the zone is demonstrated for this case study.

• 出版日期2017-11-15