通水除热管板应用于屋面结构中的模型实验研究

针对夏热冬暖地区的屋顶在夏季受太阳辐射强度大的问题,开发一种新型通水除热管板,将该通水除热管板应用于屋面结构中,构成新型通水除热屋面,可以有效改善夏热冬暖地区顶层屋面的热工性能,在间歇空调状况下,同时达到节能和舒适的目的。通过搭建模型实验台进行模型实验来研究通水除热屋面的隔热性能,得出主要结论如下:将铝制通水除热管板埋入屋顶找坡层,在17:00左右通水,此工况下对屋顶内表面有一定的降温效果,阻止晚间屋顶内表面温度的升高,降低了晚间空调的冷负荷,对夏热冬暖地区居住建筑有着重要的应用价值。     

复合墙体在夏热冬暖地区的热工可行性研究

通过对夏热冬暖地区典型复合墙体的热工计算,得出其传热系数与热惰性指标,并结合热工指标分区图,依据节能标准就复合墙体在热工可行性方面进行分析,对存在的问题进行探讨,并提出相应建议。     

室内空调条件下孝感市建筑物屋顶、墙体的隔热节能指标的选取

根据建筑物热工气候分区,对夏热冬冷地区的孝感市运用“建筑热环境与建筑节能设计标准相关控制法”中所提出的简化公式及孝感市的气象参数,计算出了室内空调条件下建筑物屋顶、墙体的隔热控制和节能控制指标,为我国夏热冬冷地区及其他地区建筑的隔热和节能控制设计提供参考依据。     

夏热冬暖地区太阳热反射涂料的节能性实证研究

本文针对在夏热冬暖地区建筑涂覆太阳热反射涂料后的隔热节能效果进行了实证研究。选取广州地区的某一工厂仓库建筑物屋顶施涂并进行了为期一年的连续测试,结果表明,太阳热反射涂料效果明显,夏季屋顶表面温度及得热量明显降低,而冬季的不利影响可以忽略不计,表明该地区厂房类建筑进行反射隔热是简单可行的节能手段。     

不同气候区外窗对建筑能耗的影响分析

通过TRNSYS软件模拟不同传热系数的建筑外窗,在严寒地区和夏热冬暖地区,对建筑冷、热负荷的影响。分析得出,节能外窗在严寒地区夏季空调能耗的节能率为8.9%,冬季采暖能耗的节能率为39%,全年总建筑能耗的节能率为31%;在夏热冬暖地区夏季空调能耗的节能率为8.0%,冬季采暖能耗的节能率为22%,全年总建筑能耗的节能率为8.6%。由此可见,外窗在严寒地区的节能效果要明显优于夏热冬暖地区。因此,在新建建筑的节能设计和既有建筑的节能改造中,严寒地区应更加重视外窗部分。     

夏热冬暖地区办公建筑能耗模拟与分析

夏热冬暖地区是我国经济和建筑产业最发达的地区之一,也是建筑能耗最多的地区之一。分析和研究夏热冬暖地区建筑能耗的特点对建筑节能有重要的意义。本文用eQUEST建筑能耗模拟软件模拟了夏热冬暖气候下不同的建筑围护结构的能耗性能,并与实际调查结果进行了比较。结论表明:办公类建筑中的空调是最大的能耗终端,全年的能耗以办公设备和照明的能耗最稳定。有外保温措施和同时具有内、外保温措施最大区别在于节省空调电力消耗31.3%和39.1%。说明建筑外墙保温系统是建筑节能的重要手段。     

夏热冬暖地区既有建筑节能改造探讨

以夏热冬暖地区的气候特点为依据,探讨如何对既有建筑进行节能改造及改造工作的重点和相关技术。     

基于围护结构的夏热冬暖地区超高层建筑节能研究

基于对超高层建筑特征的建筑物理分析和工程经验实践,切实做好超高层建筑的节能设计,对我国建筑节能工作有重要意义。结合某个位于夏热冬暖地区的地标类超高层建筑的节能设计实际工程案例,分享部分研究数据、分析结论及提出进一步思考方向,激发建筑节能同行更多思考和在超高层建筑节能设计领域的高质量研究工作。     

建筑外墙传热系数检测技术的研究

阐述了目前建筑外墙围护结构传热系数检测方法存在的一些问题,分析了含湿量对墙体传热系数的影响,针对存在的问题结合夏热冬暖地区气候条件,提出了一种可操作的科学的试验室检测方法,采用调节室调节的方式以快速达到检测的要求,大大方便了节能验收和工程质量控制。     

冷墙技术对夏热冬暖地区建筑能耗的影响研究

为了研究冷墙技术的节能效果,首先利用Sketchup软件建立了广州市住宅建筑几何模型,再利用建筑能耗模拟软件Open Studio对建筑利用冷墙技术的情况进行了模拟,最后通过分析模拟结果研究了冷墙技术对夏热冬暖地区建筑能耗的影响。结果表明,随着冷墙太阳能反射率的增加,节能量也增加。研究对于在夏热冬暖地区应用冷墙技术具有重要的指导意义。     

Building energy saving potential in Hot Summer and Cold Winter (HSCW) Zone,China—Influence of building energy efficiency standards and implications

Hot Summer and Cold Winter (HSCW) region plays an important role in China's building energy conservation task due to its high consumption in recent years for both climate and social reasons. National and local building energy standards according to which the buildings are built and operated can affect the building energy consumption to a great extent. This study investigated the energy saving potential in Hot Summer and Cold Winter Zone under different level of energy efficiency standards (China local, China national, and UK standard). Chongqing was taken as an example, and the commercial energy simulation tool eQuest was applied to analyze the building end-use energy. With the existing situation as a baseline, the building energy saving for residential section could achieve 31.5% if the Chinese national standard were satisfied, and the value would further increase to 45.0% and 53.4% when the Chongqing local and UK standard were met. For public buildings, the corresponding energy saving potentials were 62.8%, 67.4% and 75.9%. Parameter sensitivity analysis was conducted. The analysis was able to provide suggestions on energy saving implementation priorities for residential and public buildings. Indications to improve building energy standards and their implementation were also discussed.     

既有建筑的围护结构节能改造分析

以某办公建筑和住宅楼为模型,对其进行围护结构节能改造分析.通过计算比较改造前后室内负荷的变化,发现节能效果相当显著,证明在我国既有建筑围护结构节能改造存在相当大的潜力.     

采暖居住建筑节能改造收益分析

面对我国华北地区既有采暖居住建筑节能改造资金的匮乏 ,提出既有建筑的节能改造经济性分析不仅要计算冬季供暖节能收益 ,而且还要包括夏季空调节能收益 ,同时还应计入冷热源建设等潜在经济收益 ,这对缩短既有建筑节能改造初投资回收期、推动我国建筑节能的发展具有积极意义。     

Retrofitting solutions for two different occupancy levels of educational buildings in tropics

Within the multi-functionality of educational buildings, the energy conservation potential can be very different. In addition, among different retrofitting solutions investigated involving interventions on the building envelope, ventilation strategies, artificial lighting systems as well as equipment upgrading, different saving potential would come from different aspects. The opportunities for energy saving potential from the overall point of view and from the detailed aspect view of different retrofitting solutions would be very useful and important for building renovation decision making. This study presents a detailed retrofitting study of two different educational buildings. One represents a building with average occupancy variation and containing mainly offices and labs. The other one represents a building with high occupancy variation and containing mainly lecture rooms and studios. This comparison of the results gives an idea of the different energy saving potential for different types of educational buildings. Principal component analysis is also adopted to investigate the detailed performance of one of the buildings which is influenced stronger by these retrofitting solutions.     

Energy efficiency supervision strategy selection of Chinese large-scale public buildings

This paper discusses energy consumption, building development and building energy consumption in China, and points that energy efficiency management and maintenance of large-scale public buildings is the breakthrough point of building energy saving in China. Three obstacles are lack of basic statistics data, lack of service market for building energy saving, and lack of effective management measures account for the necessity of energy efficiency supervision for large-scale public buildings. And then the paper introduces the supervision aims, the supervision system and the five basic systems’ role in the supervision system, and analyzes the working mechanism of the five basic systems. The energy efficiency supervision system of large-scale public buildings takes energy consumption statistics as a data basis, Energy auditing as a technical support, energy consumption ration as a benchmark of energy saving and price increase beyond ration as a price lever, and energy efficiency public-noticing as an amplifier. The supervision system promotes energy efficiency operation and maintenance of large-scale public building, and drives a comprehensive building energy saving in China.     

Assessment of energy savings from the revised building energy code of Thailand

The government of Thailand legislated an Energy Conservation Promotion Act (ECP Act) in 1992 and set bye-laws that identify designated buildings (DBs) and detail mandatory requirements for energy conservation for DBs in 1995. An Energy Conservation Promotion Fund (ENCON Fund) was also created to fund energy audits on 1900 DBs. Recently the requirements and procedures for energy conservation in buildings have been revised where system performance requirements for building envelope, lighting, air-conditioning, and hot water generation are adopted. Moreover, the new building energy code (BEC) distinguishes different categories of DBs, provides credit for use of solar energy, and introduces a new option of whole building energy compliance. The authors develop building models from data obtained from energy audit reports and use them to estimate savings on energy and peak demand from future new buildings using forecasted energy and peak demand data from the Load Forecast Subcommittee, a panel tasked to forecast future electric load of Thailand. From a modest level of energy saving in the first year that the code is expected to be enforced, the level of saving rise to over 10% and 20% annually of requirement of target buildings in 6 and 12 years respectively.     

浅议既有建筑的节能改造

在中国,要真正减少全社会的建筑能耗总量,加强既有建筑节能改造是必然的选择。叙述了既有建筑节能改造的意义,提出了既有建筑的节能改造方法和政策建议。     

Building energy research in Hong Kong: A review

Hong Kong is located in a typical subtropical region. The buildings in Hong Kong are subjected to high cooling demands for their air-conditioning systems throughout most of the year, and their contribution toward the total energy consumption is about 40%. Therefore, energy efficiency in buildings is essential to reduce the global energy use and improve the local environmental sustainability. This paper provides an overall review of the building energy research and efforts in Hong Kong over the last decade. Various aspects and energy saving measures, including energy policy, energy audit, design, control, diagnosis, building performance evaluation and renewable energy systems, studied or used to enhance the energy efficiency in buildings are reviewed. A brief introduction of the Hong Kong Building Energy Codes (BEC) and Hong Kong Building Environmental Assessment Method (HK-BEAM) are also provided to present the efforts of the local government and community on energy efficiency in buildings. This review aims at providing building researchers and practitioners a better understanding of buildings energy saving opportunities and approaches in cities particularly in subtropical regions and taking further proper actions to promote buildings energy efficiency and conservation.     

建筑自然采光方式探讨

将建筑自然采光方法分为不依赖于技术的方法、利用技术支撑建筑设计的方法和采用先进技术的方法三大类,介绍并分析顶部采光、侧向采光、导光管等八种采光方式的利弊及适用场合,同时结合相关典型案例的分析,使各类方法的实际应用较为直观地展现出来。