Daylighting simulation for external Venetian blinds based on HDR sky luminance monitoring with matrix algebraic approach
| Type of publication: | Journal paper |
| Citation: | Wu_EP_2019 |
| Publication status: | Published |
| Journal: | Energy Procedia |
| Volume: | 158 |
| Year: | 2019 |
| Month: | February |
| Pages: | 2677-2682 |
| DOI: | 10.1016/j.egypro.2019.02.021 |
| Abstract: | 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. |
| Keywords: | |
| Projects |
Idiap |
| Authors | |
| Added by: | [UNK] |
| Total mark: | 0 |
|
Attachments
|
|
|
Notes
|
|
|
|
|