The optimal design of lighting systems for designated office building in Thailand according to ministerial, the Type or Size of Building Standards and Rules and Procedures, Building Design for Energy Conservation, Act B.E.2552

The financial index of payback period analysis is proposed to evaluate the economic performance of lighting system between conventional designs and design by the Energy Conversation Promotion Act (no.2) B.E. 2550 of Ministry of Energy, The Type or Size of Building Standards and Rules and Procedures, Building Design for Energy Conservation, Act B.E.2552 for office building in term of illumination standard, energy consumption, return of investment and environmental aspect. First of all, the Type or Size of Building Standards and Rule and Procedures, Building Design for Energy Conservation, Act B.E.2552 is reviewed to compare with the conventional designs of lighting system for office building. Secondary, the life time energy consumption of fluorescent lamp T5 with electronic ballast, fluorescent lamp T8 with standard ballast and fluorescent lamp T8 with electronic ballast is simulated by various sizes of office buildings according to IEEE, IEC, IES, and the Type or Size of Building Standards and Rules and Procedures, Building Design for Energy Conservation, Act B.E.2552. In addition, the payback period and CO₂ emission of lighting system for selected office building are simulated by various scenarios which the analytical results show that are the optimal lighting system for office building under the present situation. Finally, the optimal design of lighting system for designated office building in Thailand will be discussed about the energy performance with environmental friendly.