An investigation of the vertical diffuse efficacy of solar irradiance for Thailand's climate

2018 2nd International Conference on Energy and Environmental Science

能源学;生态环境科学

Umar, Sutiwat^1 ; Chaiwiwatworakul, Pipat^1

Joint Graduate School of Energy and Environment, CHE Center for Energy Technology and Environment, King Mongkut's University of Technology Thonburi, 126 Pracha-Uthit Road, Bangmod, Tungkru, Bangkok

10140, Thailand^1

关键词: Bangkok , Thailand;    Diffuse solar irradiance;    High-latitude regions;    Luminous efficacy;    Mean values;    Sky condition;    Solar irradiances;    Thailand;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/164/1/012009/pdf
DOI  :  10.1088/1755-1315/164/1/012009

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

This paper presents a study result of the luminous efficacy of diffuse solar irradiance on vertical plans using records from a daylight measurement station located in Bangkok, Thailand. Hourly mean values of the vertical diffuse efficacy are first introduced. Variations of the efficacy are also presented for different sky conditions. Our results indicate that the tropical diffuse efficacy was higher than those in high latitude regions. In this study, the authors proposed a method for the efficacy prediction. The proposed method was evaluated its performance against some selected existing models. The results show that the authors' method predicted well the tropical efficacy value and outperformed other evaluated models with their original coefficients.