Characteristics and advantages of energy performance contracting mode for energy saving transformation of existing large public building

Existing large-scale public building energy saving renovation is the inherent requirement of sustainable development, it has been proved that implementing the energy performance contracting mode in the Existing large public buildings energy-saving is an effective way both at home and abroad. EPC mode has obvious characteristics for the ESCO and the customers, it can meet the basic requirements of large public buildings energy-saving, such as the width of funding sources, program specifi cation, advanced technology, information fl ow and management level higher, etc. Under the condition of market economy, it also provides a broad platform for the ESCO implements building energy saving transformation, which is conducive to the realization of the win-win cooperation between the parties, and to promote the healthy development of the existing large public building energy saving reconstruction.

Optimization and implementation strategy of ESCO driving force in the development of energy-saving transformation market of existing buildings

The development of the existing building energy-saving transformation market is inseparable from the internal driving force of ESCO.Giving full play to the driving role of ESCO scientifically is the internal requirement to promote the healthy and orderly operation of the existing building energy-saving transformation market.This paper summarizes the practical experience of developing ESCO driving force operation in foreign existing building energy-saving transformation market,analyzes the bottleneck of developing ESCO driving force operation in China’s existing building energy-saving transformation market,and puts forward useful practical enlightenment based on the comparison between home and abroad;According to the optimization principle of ESCO driving force operation in the development of existing building energy-saving transformation market,the optimization design framework of ESCO driving force is proposed,and the implementation strategy of ESCO driving force optimization in the development of existing building energy-saving transformation market is planned.In order to optimize and improve the effectiveness of the operation and development of the energy-saving transformation market of existing buildings with the internal driving force of ESCO.

Power Transformer No-Load Loss Prediction with FEM Modeling and Building Factor Optimization

Estimation of power transformer no-load loss is a critical issue in the design of distribution transformers. Any deviation in estimation of the core losses during the design stage can lead to a financial penalty for the transformer manufacturer. In this paper an effective and novel method is proposed to determine all components of the iron core losses applying a combination of the empirical and numerical techniques. In this method at the first stage all computable components of the core losses are calculated, using Finite Element Method (FEM) modeling and analysis of the transformer iron core. This method takes into account magnetic sheets anisotropy, joint losses and stacking holes. Next, a Quadratic Programming (QP) optimization technique is employed to estimate the incomputable components of the core losses. This method provides a chance for improvement of the core loss estimation over the time when more measured data become available. The optimization process handles the singular deviations caused by different manufacturing machineries and labor during the transformer manufacturing and overhaul process. Therefore, application of this method enables different companies to obtain different results for the same designs and materials employed, using their historical data. Effectiveness of this method is verified by inspection of 54 full size distribution transformer measurement data.

Transformation of Modern Chinese Architectural Form and Its Influence on the Protection of Contemporary Chinese Architectural Heritage

Architecture is a fascinating and complex mixture of cultural practices.Different cultures are intertwined to form a new system.The relationship between Chinese native architecture and Western construction methods in the development of Chinese construction from 1840 to 1937 is inspected.Based on Chinese and British sources,special attention is paid to building materials and different aspects of the building process.The research shows that the complex interaction in shaping Chinese architecture has led to a new style and a new construction method,which combines the characteristics of two systems in material supply and use,construction technology,builder organization,tools used and the education received.In the construction and protection related to integration and conflict,the development of contemporary China's emerging construction protection industry is similar to the history of modern Chinese architecture.

Behavior characteristics and market operation problems of existing building energy-saving renovation market

The long-term and effective implementation of the existing building energy efficiency renovation depends on the development of the existing building energy efficiency renovation market.The key to the development of the existing building energy efficiency renovation market is the joint role of the market players.Starting with the analysis of the externalities and information asymmetry of the existing building energy efficiency renovation market,this paper analyzes the behavioral characteristics and influencing factors of the existing building energy efficiency renovation market entities(central government,local government,owners,energy conservation service enterprises,third-party evaluation institutions,and other market entities),and reveals the problems of the existing building energy efficiency renovation market,such as the absence of government,the lack of main power,and the lack of financing channels,Thus,it lays a platform foundation for the research on the behavior strategy and security system of the existing building energy-s aving renovation market.

Assessing effectiveness of existing building energy-saving reconstruction policy adapted to market development

The market development and policy matching of existing building energy-saving retrofits determine the effectiveness of policies in promoting the operation of existing building energy-saving retrofit market.Based on the perspective of market development to evaluate the effectiveness of existing building energy-saving transformation policy,it is necessary to clarify the basic connotation of the effectiveness of existing building energy-saving transformation policy,systematically analyze the evaluation content,construct a multi-level evaluation index system,and select scientific and effective quantitative evaluation methods to implement a strict evaluation process.

Recycling of Old Industrial Buildings in Xichang

With the advent of the post-industrial era, a large number of idle old industrial buildings have been produced in the city. How to deal with idle old industrial buildings has become a reality. Taking the transformation of the factory building of Chang'an Machinery Plant in Xichang for example, the paper analyzed the recycling strategy of old industrial buildings from the basic conditions and transformation contents of the project, re-constructed the new connotation of the building, so as to exert the use value of the old industrial buildings, with a view to providing a reference for the organic renewal and sustainable development of the city.

Theoretical Research,Practice Exploration and Policy Suggestions on Scenescape Development and Ecological Value Transformation in Chengdu’s Park City Construction

The“Park City”concept presents a new,urban development model that can be used as a guide for planning the growth of a city.Advancing the transformation of Chengdu into a park city is an important and unique strategic option for maintaining and strengthening the Chengdu-Chongqing economic circle.The construction of a park city in Chengdu has many potentially positive and favorable outcomes,including maintaining natural ecosystems while improving biodiversity,livability,and enhancing the city’s historical and cultural heritage,all while establishing Chengdu as a national leader for this new urban development model.In recent years,park city scenescape modeling and the resulting ecological value transformations have been analyzed through theory,mechanism designs,and limited practice,but throughout the explorations on scenescape building and ecological value transformations,the actual construction of a park city is still facing many problems.This article argues that Chengdu should take lessons from the advanced experience in urban ecological construction efforts of other cities,both in China and overseas,focusing on sustained scenescape building,theoretical research in ecological value transformations,establishing meaningful and compatible interaction mechanisms between ecological value transformations and capital markets,improving the levels of planning and designing needed for scenescape building,establishing innovative scenescape building and ecological value transformations management systems and mechanisms,and cultivating park city scenescape brands.Related and detailed scenescape building and ecological value transformation measurement and policy suggestions are also provided in this article.

How green building rating systems affect designing green

Storing thermal energy in mass concrete floors would have a major impact on the stability of the temperature in buildings.The concept of a thermal battery refers to storing the supplied radiant heat and releasing this heat the next day through radiation and convection.In this study,an approach is introduced to examine the idea of thermal battery in thick concrete flooring(1.22 m)using the earth as a heat source.Controlled experiments were built and conducted on an instrumented 3000 m 2 industrial facility.The heating radiant floor combining with ground source system was operated during off-peak hours and the air conditioning system was disabled for 24 h during the test period.The heat pumps were operated in single stage using less power compared to when operated on demand.Indoor air temperature showed that 100(37.78℃)supply temperature at the ground source heat pump would be enough to maintain a stable warm temperature during cold days.Two weather conditions in the winter were selected to do the tests.The second test had a colder ambient temperature to verify the procedure.The indoor air temperature showed that the night heating system performs well for both cases because it maintained a constant temperature for the entire operational day even in the daytime when every heating unit was off.This approach of applying the heating at nighttime with lower electricity rates would lead to significant operational cost savings in the building.

气候变化下窑居建筑屋顶适宜性改造研究

调研发现陕北地区自2010年以来降水量开始呈现明显增加的趋势,而传统窑洞屋顶缺少良好的防水设计,易导致窑洞在经受暴雨时漏水甚至坍塌。村民采取在原屋顶上加建彩钢板的改造方式防雨,然而这种窑洞屋顶构造的自更新不仅未能充分解决屋顶防水问题,还在一定程度上破坏了窑洞村落的传统风貌。以陕北地区传统民居的典型代表窑洞为研究对象,通过调研测试与软件模拟分析窑洞屋顶加盖彩钢板构造对室内热环境的影响,发现加盖彩钢板能够提升屋顶的耐久度和防雨性能,但是不能改善室内热环境,并且不能充分融入到传统的乡村环境中。在此基础上提出了新型窑洞屋顶构造,以期进一步改善屋顶防水性能并延续传统民居建筑风貌,为后期窑居建筑更新改造提供参考。

“双碳”背景下苏州市既有建筑绿色化改造低碳发展路径研究

部分既有建筑存在能耗高,结构部件及部分设备老化等问题,结合城市更新,进行既有建筑绿色化改造,不仅可以提升建筑性能,还可以降低建筑碳排放。本文分析苏州地区既有建筑绿色化改造的现状和任务,提出相应既有建筑绿色化改造规划体系;总结归纳适宜苏州地区的相关绿色化改造技术;并从组织、技术、资金等方面提出促进苏州地区既有建筑绿色化改造工作推进措施。

基于粒子群的旧工业建筑再利用空间优化算法

为了解决土地资源紧张的问题,优化旧工业建筑空间,提高建筑利用空间紧密度,实现空间再利用,提出基于粒子群的旧工业建筑再利用空间优化算法。将土地利用适宜性最大化、用地紧凑度最大化和转化成本最小化作为优化目标,构建空间优化模型,建立旧工业建筑再利用空间优化目标函数,在相关条件的约束下采用粒子群算法求解上述目标函数,实现旧工业建筑再利用空间的优化。仿真结果表明,所提方法的地类转换成本低,总适宜度、生态协调性和社会效益高,空间紧凑度高,优化效率高。

铁路房建工程数据管控系统软件研发

针对铁路房建工程中存在人工汇总效率低、标准不统一、易出错等问题,开发一套铁路房建工程数据管控系统软件。该系统通过制定房建标准化分类命名及标准化的提资模板,实现数据的批量导入;同时通过输入相关参数,可以自动配置全线房屋并汇总房屋相关需求数据,各专业可以通过该系统开展具体的设计并将设计数据汇总至系统中,形成房建数据湖,并利用数据湖生成各专业的数据统计表格。该系统解决了日常工作中专业间提资数据不完整、不可信、获取慢等问题,并实现设计数据的即时共享,大幅提高设计效率及质量,促进铁路房建工程的数字化转型,有力支持以铁路全专业为主体的协同设计系统的研发。

“发明学术”:民国时期《历史语言研究所集刊》与史语所学派的建构

民国时期中央研究院历史语言研究所代表了中国学术由传统走向现代的典范。《历史语言研究所集刊》以“发明学术”为定位,通过征稿、审稿等制度提升学术论文的质量,着力打造学术重心,注重培养学术后备军,推动了史语所学人的代际转换。因此,《集刊》可谓为建构史语所学派的主要阵地之一。

基于人因验证的大学教学楼空间改造策略研究——以北京交通大学建筑与艺术学院教学楼为例

文章以北京交通大学建艺学院教学楼为例,探讨了基于人因验证的教学空间改造策略,并采用人因虚拟环境实验方法评估了改造前后的使用感受。研究发现,在空间设计上,针对教学楼不同区域的使用需求,采取了分区设计、开放式布局、多功能性设计等策略,提高了教学楼空间的利用率和舒适度;在功能分区上,采用了功能区分明、交通流线清晰的设计,使教学楼的功能更加明确和合理。通过人因验证实验,研究发现改造后的教学楼空间在舒适性、视觉环境、听觉环境等方面都得到了改善,同时也提高了用户对教学楼空间的整体满意度。文章旨在为教学楼的建设和改造提供新思路和方法,促进教学空间与新教育理念的相互适应,同时也为人因环境评估技术在建筑设计领域的应用提供了借鉴和参考。

国家区域医疗中心武汉协和重庆医院电气设计要点

以国家区域医疗中心华中科技大学同济医学院附属协和医院重庆医院(一期工程)为例,对医疗建筑电气设计的以下问题进行分析与探讨:供配电系统设计的变压器安装容量合理性分析、供配电系统可靠性分析、变压器能效等级选择及机房选址等;针对医疗建筑的电能质量问题提出解决方案;调研同类医疗项目存在的照明光环境问题,设计本项目的物联网智能照明光环境系统;总结本项目光储直柔微网系统设计要点。

北京某大型商场空调系统节能改造方案分析

大型商场人流量大、散热设备多、空调系统运行时间长,有较大节能潜力。调研了北京某大型商场空调系统的能耗情况,针对其运行过程存在的问题,提出了一套基于空调系统节能控制技术的综合节能改造方案。研究表明,该空调系统节能改造后,年节电量为140.56万k Wh,每年节省电费160.24万元;节热量为601.82GJ,每年节省供热费用5.95万元,节能效果与经济效益较好,可为北京地区类似公建节能改造提供借鉴和参考。

城市公共建筑功能及改造潜力评价指标体系的建立

在建筑能耗较大、城市土地资源紧张的背景下,城市公共建筑更新改造成为城市发展的新趋势。分析了城市公共建筑的功能和改造潜力,建立相应的评价指标体系,从建筑完整、节能优化、文化历史、社会经济等方面对城市公共建筑功能及改造潜力进行评价,提出相应的评价细则,以推动城市公共建筑更新改造的发展。

浅析文旅开发背景下赣州传统民居的功能转变——以郁孤台历史街区为例

文章以赣州市郁孤台历史街区为例,浅析赣州传统民居在现代生活环境下中的功能转变。从历史背景、旅游开发、建筑风貌与特征、平面与空间等多个层面分析郁孤台历史街区实现功能转变的基本方法、前因后果、价值效益,并从郁孤台历史街区传统民居功能转变的实例中归纳总结出一些值得借鉴的传统民居更新和保护策略。

专利转化视角下的高校图书馆馆员服务能力建设

我国高校图书馆缺乏面向专利转化运用的深层次服务,这与高校图书馆员专利信息服务能力不足有直接关系。鉴于此,文章基于专利转化的服务场景,对复旦大学5位服务对象进行深度访谈,对103家高校国家知识产权信息服务中心的服务现状进行调查,采用扎根理论的质性研究方法,借助NVivo12软件对资料数据进行编码和分析;基于需求—服务—能力模型,从服务对象的实际需求出发,构建包括能力素质和知识技能的高校图书馆专利馆员能力素质框架。文章提出优化专利服务人才配置、建立专利馆员培训体系、组建专利转化实践服务团队、开展能力评估和考核4个层面的能力建设对策。