Performance experiment on solar energy and air dual-heat-source heat pump system

The flat micro heat pipe array photovoltaic-thermal module was retrofitted into a photovoltaic-thermal evaporator, and then a novel solar energy and air dual-heat-source heat pump system was developed. The operation performance of the system operating in the solar energy mode (S) as well as the solar energy and air dual-heat-source mode (SA) was studied in detail. Studies have shown that: affected by solar radiation and ambient temperature, the role of ambient air in the dual heat source heating mode will switch between heat release and heat absorption, and the temperature difference between ambient temperature and backplane temperature fluctuates between -3.1—3.5℃; the SA mode was suitable for low solar radiation condition, and its thermal efficiency, comprehensive performance efficiency and COP were 56.7%, 81.7% and 2.38 respectively, which were 20.3%, 25.0% and 6.7% higher than that of the S mode; under the high solar radiation condition, the SA mode would accelerate the heat dissipation of the system, but it could improve the electrical performance of the system. According to the above characteristics, it would get the better operation performance operating in SA mode when the backplane temperature was lower than the ambient temperature as well as operating in S mode when the backplane temperature was higher than the ambient temperature.     

基于高分辨率遥感影像的城市建筑目标提取研究

基于Geoeye-1高分辨率遥感影像,根据机场、大型公共建筑、污水处理厂3类建筑目标的光谱特征和形状特征,采用面向对象分类识别方法,并结合城市总体规划专题数据,对上述3类建筑目标进行提取实验。实验表明,本文提出的技术路线对上述3类城市建筑目标提取具有较好的应用效果。     

Comparative study of commercial building energy-efficiency retrofit policies in four pilot cities in China

The energy efficiency of existing commercial buildings is more challenging to regulate and improve than the energy efficiency of new constructions. In 2011 and 2012, the Chinese Government selected four cities- Shanghai, Tianjin, Shenzhen, and Chongqing- to implement pilot commercial building energy efficiency retrofit program. Based on site surveys and expert interviews in these pilot cities, this research conducted a comparative analysis on incentive policies of local city level. The analysis results show that policy designs of existing commercial buildings should be further improved. The aspects that influence the implementation effect in the future, such as subsidy level, installments, and business model promotion, should be specified in the policy clauses. Referring to the technical solution and cost-benefit in Chongqing, we found that lighting system is the most common retrofit objects while envelope system is the least common one. And the subsidy incentive is greatest for educational buildings, followed by office buildings. In the end, we further discussed the problems and obstacles in commercial building retrofit market, and provided a series of recommendations.     

对两类渗透性防水材料的思考

分析了水泥基渗透结晶防水涂料和憎水性硅质渗透材料两类具有渗透功能的材料对混凝土结构防水防护的作用机理,重点对水泥基渗透结晶防水涂料的性能检测与在地下工程中的应用效果进行了阐述。提出水泥基渗透结晶防水涂料应成为地下防水工程两道设防中的首选;同时指出憎水性硅质渗透材料是外露结构混凝土理想的防水、防护材料,应加强对其研究并扩大在防水领域中的应用。     

Conservation controls in Melbourne

Controls to protect the historic environment have developed relatively late in Australian cities. The earliest and subsequently most comprehensive evolved in the state of Victoria, especially in the inner suburbs of the state capital, Melbourne. These controls have two basic forms; specific site registration and protection and broader planning control. While the controls have developed amidst some criticism and opposition, they appear currently to be well accepted and to be making a positive impact.     

建筑业信息化标准体系设计

建筑业信息化标准是规范建筑行业信息化工作的强有力保障。为了完善我国建筑业信息化标准系统性,阐述了信息化标准体系设计原则, 建立了两种信息化标准体系结构模型, 明确了两种结构模型各层次标准的对应关系, 总结了信息化标准体系编制情况, 为指导建筑业信息化标准化建设提供依据。     

智能建造技术协同创新主体互动关系研究

文章分析智能建造技术创新主体的特点,界定并划分智能建造技术协同创新主体互动关系的范畴和类别,建立智能建造协同创新的多方演化博弈模型,揭示智能建造技术协同创新主体互动关系。主要结论为：(1)智能建造技术协同创新呈现级联性、函数性、动态平衡性、不确定性和指数性特征;(2)智能建造技术协同创新主体互动关系分为同质性的内部主体互动和异质性的内部主体与外部主体互动,表现出利益共生、成长进化和共享协同的特征;(3)创新主体之间的互动行为有利于对创新资源进行有效配置,推动智能建造技术的应用。     

新建和既有居住小区生活垃圾生化降解技术的研究

从城市居住小区源头上对生活垃圾进行“减量化、资源化、无害化”处理，是节能减排和提高居民生活质量重要的组成部分。采用生化降解技术处理占50％-60％的有机垃圾处理是非常重要的方法。本文针对这一技术的核心问题，以及运行的成本加以研究，表述了其能够广泛推广和使用的基础，并且提出了未来更加先进的处理方法，随着此项技术的不断推广和使用，将为社会产生了巨大的社会效益、经济效益和环境效益。     

吸取TVCC失火教训 加强外墙的防火是当务之急

分析了TVCC失火原因,幕墙屋面保温材料和面板材料防火性能不好是TVCC火灾技术内因.阐述了外墙、屋面节能必须与防火安全并举,中国建筑节能不能照搬外国模式,必须建立中国式建筑防火节能体系.提出应积极吸取TVCC及近年频繁的幕墙屋面火灾的惨痛教训,切实加强外墙及屋面的防火是当务之急.     

聚乙烯燃气管道工程设计与施工技术要点

本文依据行业标准《聚乙烯燃气管道工程技术规程》CJJ63—2008，重点介绍了聚乙烯燃气管道工程设计、施工和验收等技术。