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我国于今年3月最新颁布了《建筑节能与绿色建筑发展“十三五”规划》,对中国建筑的用能做出了进一步的要求,强调了建筑节能改造的重要性。而近年来作为建筑能耗主体的公共建筑能耗形式严峻,单位面积耗电量相当于普通住宅的10到15倍,满足节能标准的建筑不到10%,存在很大的节能改造潜力。其中的重要组成部分的校园建筑也体现为高能耗的现状,传统校园的既有建筑中普遍存在节能设计考虑不足的问题,通过合理的节能改造及节能措施,降低建筑能耗,是解决高校高能耗问题的关键。本文根据广东的地理位置及其气候属性,判断该此地区特性带来的建筑能耗问题——夏季长期使用空调能耗造成电能浪费,需要加强建筑的隔热性能,分析研究适宜的节能改造措施并对此进行综合效益评价。通过分析该校某宿舍楼的耗电量数据,总结该校园内宿舍楼用能水平、能耗强度及变化规律,确定改造针对部位及改造材料。同时,对此项方案进行改造前后的技术经济效益分析。在对改造后建筑室内冷量变化量进行合理估算后,将耗冷量减少值转化为电费节省值。采用净现值模型对方案进行经济效益评价,判断得方案在经济上可行。
In March this year, China recently promulgated the “Building Energy Efficiency and Green Building Development” and the “13th Five-Year Plan,” making further demands on the energy consumption of China’s buildings and emphasizing the importance of retrofitting energy-saving buildings. In recent years, the energy consumption of public buildings, which is the main part of building energy consumption, is very serious. The power consumption per unit area is 10 to 15 times that of ordinary residential buildings. Less than 10% of the buildings meet the energy-saving standards. There is a great potential for energy saving and transformation. One of the important components of campus architecture also reflects the status quo of high energy consumption. Existing buildings in traditional campuses generally have problems of inadequate energy-saving design considerations. Through reasonable energy-saving renovation and energy-saving measures to reduce building energy consumption, The key to the problem. In this paper, according to the geographical location of Guangdong and its climatic properties, to determine the characteristics of the region brought about by building energy consumption issues - the summer long-term use of air conditioning energy consumption caused by waste of energy, the need to strengthen the building’s thermal insulation properties, analysis of appropriate energy-saving measures to transform And make a comprehensive benefit evaluation. By analyzing the school dormitory building power consumption data, summed up the campus dormitory energy use level, energy intensity and change rules, to determine the transformation of the site and the transformation of materials. At the same time, the program before and after the transformation of technical and economic benefits analysis. After a reasonable estimate of the change of the indoor cooling capacity of the converted building, the reduction of the cooling capacity is converted into the electricity saving value. The NPV model is used to evaluate the economic benefits of the scheme, and it is economically feasible to determine the scheme.