| บทคัดย่อ(English) |
This study aimed at investigating ways to renovate government office buildings for technologically and economically appropriate energy consumption. Divided into three parts, the first involves the investigation and analysis of energy use in buildings and their temperature level, which affects the comfort condition. The second part deals with a case study involving simulation using the computer program DOE-2 to determine the problems regarding building energy consumption and solutions. The third part summarizes ways to design a typical government office building to reduce energy consumption. The findings of the study reveal that most of energy consumed was for air-conditioning as the buildings did not have sufficient heat insulation. Thus, the transfer of heat through building surfaces was higher than the legal standard. An analysis of problematic architectural components for subsequent renovation included walls, roofs, radiation of the sun's ray through glass panels, and heat conductivity through glass. The renovation of building surfaces analyzed included a sunshade outside the building, building planning and designs, and analysis of the ratio of total window space to wall space (WWR). Concerning energy consumed by artificial lighting, the amount of energy consumed for lighting in relation to total space was in accordance with regulations. These findings led to a conclusion that rectangular-shaped buildings with 30% window space consumed the lowest amount of energy. As for sunshades to block the sun's ray from different directions, the analysis confirmed that north facing sunshades should be vertical, while those southern, western, and eastern should be two-layered and horizontal. Selection of building surface materials should consider three criteria: the materials should not be costly, they should be heat insulating, and they should have the lowest energy consumption rate possible. In addition, seven types of wall surfaces were studied, and it was found that those with 2-inch and 3-inch fiberglass insulation are the most energy efficient and technologically worthwhile. As for eight types of roofing analyzed in the study, both tiles and concrete roofing with 2-inch and 3-inch fiberglass insulation are also the most energy efficient and technologically worthwhile, but investment appears high. Finally, among the five types of glass, those with the low SC value have more potential, but if prices are taken into account, both regular glass, reflective glass, and two-ply glass are appropriate for the construction of government buildings. |
