重庆市某办公建筑空调系统节能改造研究

随着经济高速发展,重庆市办公建筑数量逐年增多,能源消耗迅速增加.根据对重庆市某典型办公楼能耗进行的现场测试和调研,掌握了该办公楼的实际能耗情况.在分析测试与调研结果的基础上,针对其存在的具体问题,提出了空调系统节能改造的若干措施,并进行了简单的技术经济分析,发现改造后能节约大量经费,节能改造效果十分明显.     

既有建筑空调系统节能改造的能耗分析方法

介绍了既有建筑空调系统节能改造的流程.针对空调系统能耗调研一般只在短期内进行,长期测试难以实现的情况,提出了在进行能耗分析时,合理利用短期内的测试数据与当地室外气象参数,通过拟合计算出空调系统的供冷、供暖负荷,为节能改造提供评价依据.结合工程实例,对该方法的实际应用进行了探讨.     

对既有公共建筑的空调供热节能改造的预评估

介绍了上海某栋既有公共建筑的空调供热系统节能改造的案例。通过详细的能耗调研、检测评估、模拟计算等工作,对大楼的能耗状况作了全面评估和改造工程可行性分析,在此基础上提出节能改造方案,并预测了节能效果。     

基于实际能耗数据分析上海某商厦空调系统节能改造方案及效果北大核心

以上海某商业大厦为例,从建筑实际运行能耗数据出发,通过调研和空调系统性能测试,找出该大厦空调系统冷热源存在的能耗方面的问题,确定了节能改造方案并分析了实际改造效果。在对改造后的建筑能耗数据进行深入分析的基础上,进一步提出了继续开展节能改造的方向和技术措施,供上海市类似大型商业建筑节能改造借鉴。     

城市地铁环控系统节能措施与效果的初步研究

通过对城市地铁环控系统能耗的调研分析,对既有节能技术措施与效果进行了评价,在此基础上调查研究了既有地铁环控系统节能改造的潜力以及新技术新产品集成应用的可行性,对进一步开展地铁环控节能降耗及其他行业或系统的节能改造具有参考借鉴价值。     

重庆市江北区酒店用能现状分析与节能诊断

通过对重庆市江北区宾馆酒店公共建筑能耗调研,对重庆市江北区酒店总体能耗、空调系统能耗、空调能耗构成、空调系统运行管理的现状进行了分析,并提出了节能诊断。调研发现,重庆市江北区酒店类公共建筑单位能耗较高,运行管理水平较低,节能技术未得到广泛应用,空调设计负荷普遍偏高,有很大的节能改造潜力。     

上海大型公共建筑锅炉使用现状和节能案例北大核心

根据上海地区130栋大型公共建筑的能耗调研数据,分析了上海地区大型公共建筑中燃油/燃气锅炉的使用情况和能耗水平。介绍了两个酒店锅炉系统节能改造案例,分析了空气源热泵替代锅炉、烟气热回收、锅炉油改气等节能改造方法的改造效果。探讨了上海地区适用的供暖系统形式。     

既有建筑节能改造——成都地区某公共建筑节能改造案例分析

通过对成都地区某公共建筑空调系统能耗进行的调查与分析,提出了节能改造的建议,并对改造效果进行了跟踪测试,分析了节能改造后的经济与环境效益。     

合肥市某既有办公楼节能改造及能耗模拟

简要介绍了既有建筑现状和改造要点,运用能耗模拟软件DesignBuilder对合肥市某办公楼建筑改造前后的全年建筑能耗进行模拟,分析各项节能措施的节能改造效果。计算和分析结果表明,经过围护结构、照明系统及空调系统综合改造后,建筑全年能耗比既有建筑能耗降低了33．38％,二氧化碳排放量大大减少。     

哈尔滨市既有建筑节能改造研究

哈尔滨市既有建筑节能改造的研究,首先从分析现有建筑能耗入手,采用计算分析与实测相结合的方法,对既有建筑能耗现状进行分析。根据《民用建筑节能设计标准》规定的建筑节能目标,确定围护结构各部位及供热系统的节能目标。最后根据节能目标确定节能改造方案,并按此方案施工;施工后对经过节能改造的建筑进行能耗分析,以确定最终节能效果并进行技术经济分析。     

浅析高速公路工程招投标中的最低评标价法

结合目前高速公路施工项目招投标活动的实际情况,阐述了最低评标价法的概念,归纳了其优点及存在问题,对完善最低评标价法提出几点策略,以期促进招标投标市场更加规范有序。     

Place-Making in Megaprojects in Melbourne

This article analyses state-led place-making practices in Melbourne. The two levels of government that influence planning in Melbourne make much of the city as ‘culturally vibrant’ and ‘creative’, and have incorporated creative city-inspired place-making principles into many layers of the planning system. An examination of the development of two mixed-use megaprojects in central Melbourne reveals however that ideals of culturally engaging public places, and indeed of creative landscapes for middle-class consumption, wither in the face of more basic imperatives for economic development. In these case studies the ‘creative city’, no matter how the idea is interpreted, has little traction either as a set of inclusive place-making principles or as a gentrification strategy. The article concludes that the creative city-inspired place-making objectives in the planning system at both state and local levels are ambiguous in their overall intents and completely unsupported by statutory controls. Such place-making objectives as are realised are the compromised results of the interplay of uncoordinated decisions, delivered at the pleasure of the developer.     

Pathogens in septage in Vietnam

Septage is widely acknowledged as a major source of infectious pathogens while disposal of septage, and the operation and maintenance of septic tanks, is not regulated in many developing countries. Twenty untreated septage and septage sludge samples were taken from Can Tho City, Vietnam to examine their pathogen content, and indicator micro-organisms. Escherichia coli and Enterococcus spp. were detected in all samples, regardless of sludge storage time. Phages were detected in 80% of samples. Salmonella spp. were detected in 70% of the untreated septage and 60% of septage sludge samples. Concentrations of phages and bacteria tested in septage sludge after many years of tank storage were much higher than the expected levels. Helminth ova were present in 95% of untreated septage samples with an average of 450 ova l^− 1, and were detected in all septage sludge samples with an average of 16,000 ova l^− 1. Twelve varieties of helminth ova were identified. More helminth ova varieties in higher concentrations were found in septage than those reported from stool samples. The varieties' frequency ranged from 10% to 50% and Ascaris lumbricoides predominated. Results show that pathogens and indicator micro-organisms, especially helminth ova, accumulate in sludge. Thus helminth ova should be considered when septage sludge is treated and used for agriculture. Proper health protection measures must be applied for people handling septage.     

在市场中实践在实践中学习在学习中进步--工程公司市场化进程的回顾与展望

近两年来，工程公司在提高市场竞争意识、推动市场化进程中做了大量工作，其中坚持走出去的方针是我们自我加压、推行加快市场化步伐的一个重要战略步骤。     

新时期广东城市化的新特点

新时期广东城市化出现以下特点:知识源导向、城市由单体向群体化发展、产业集群推动、政府主导自上而下的集约化发展、城镇化向城市化转变、由重“数量”发展向重“质量”发展的转变。     

新形势下高校强化基建财务管理的探讨

在市场条件下高校基建财务人员在加强日常财务管理的同时,必须树立起高度的工作责任心,抓好事前监督、事中监督、事后监督三个环节,全面理解、贯彻执行《高等学校财务制度》,管好用好各项基本建设资金,提高基建财务管理水平,更好地完成高校各项基建任务,以有限的投资,最快的建设速度,获得最大的投资效益。     

2005年北京办公物业市场七大趋势

趋势一:CBD区域写字楼集中放量从各区域规划方案上看,CBD区域多数项目在03～04年处于项目的报批手续及拆阶段,预计2005年正式推向市场,因此2005年CBD区域将成为北京市场供应集中的域,区域即将供应的项目有北京财富中心(二期)、金地国际花园、万达广场、SOHO尚都、万通中心、世纪财富中心、怡禾国际中心、光华国际等。除去未知项目,2005CBD写字楼办公面积的供应量为60万平方米左右。中关村区域经过一段时间的集中供后开始逐步放缓,2005年供应的体量相对较大的项目有中关村金融中心、新中关。金街区域可能开盘的项目只有2个:英蓝国际中…     

浅谈我国工程项目建设成本控制存在的问题

结合目前我国施工企业工程项目成本管理现状,对工程项目成本管理过程中存在的问题进行了较详细的分析,并提出了一些解决问题的办法,以做好项目成本控制工作,进而增强企业经济实力。     

Variation in property taxation in Tulsa

Conclusions It may be reasonably concluded from this study that the range of variation in these ratios of assessed to actual value are of a reasonable size for the great majority of cases. The frequency distribution of these sample ratios was not normal, however, as was assumed a process of this type would produce. On the other hand, the failure of the regression analysis to identify any significant variables which would explain these variations would tend to re-enforce the assumption that the fluctuations were indeed of a random nature.To sum it up in one paragraph, aside from a few extreme cases, the assessing process appears to give estimates which are more consistent than would be expected under the assumption that any errors would be of a random nature, but the regression analysis was unable to isolate any particular socioeconomic characteristics which would explain the variation which was present.Financial support for this research project was furnished by the University of Tulsa.