Daylighting simulation for external Venetian blinds based on HDR sky luminance monitoring with matrix algebraic approach

An accurate daylighting simulation can potentially improve the quality of pre-planing buildings and regulating daylighting to achieve the goal of green buildings. However, standard sky models can hardly reproduce real skies in real-time for a specific location within its micro-climate. This paper investigates an embedded photometric device based on high dynamic range (HDR) sky luminance monitoring with high resolution mapping in simulating real-time horizontal work-plane illuminance distribution. To increase time efficiency in the iterative process for the illuminance calculation, a matrix algebraic approach was employed and adapted for the device. The photometric device was validated experimentally in a daylighting test module with external Venetian blinds at different tilt angle of slats. The results indicate the embedded photometric device based on monitored sky can improve accuracy in simulating real-time daylighting provision by over 3 times, with 15%∼37% average error, compared with a common practice using the Perez all-weather model.

Yan, Jinyue
Yang, Hong-xing
Chen, Xi
Publié dans:
Energy procedia: Innovative Solutions for Energy Transitions, 158, 2677-2682
Présenté à:
The 10th International Conference on Applied Energy (ICAE2018), Hong Kong, China, August 22-25, 2018
Mar 15 2019
Released under a CC-BY-NC-ND license.

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 Notice créée le 2019-08-16, modifiée le 2020-10-29

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