长沙某高层办公建筑节能技术应用研究

发布时间：2019-03-16 11:25

【摘要】：2015年我国公共建筑能耗占建筑总能耗的33%左右,其中高层办公建筑能耗约占公共建筑能耗的30%,因此降低高层办公建筑能耗可有效降低我国城镇建筑能耗。本文以长沙市某新建高层办公建筑为对象,分析了各项建筑节能技术对该建筑能耗的影响水平,并提出了适合于该建筑的建筑节能技术优化组合方案。根据该高层办公建筑的基本信息,建立物理模型,以1980年代公共建筑的围护结构做法作为参照建筑,进行实际建筑和参照建筑的能耗分析,结果显示实际建筑比参照建筑节能60.53%。在此基础上,将该办公建筑能耗分类为照明系统能耗、围护结构能耗和空调系统能耗,分析现有节能技术不同参数值对以上三种能耗的影响,并得出了降低该建筑能耗的节能技术组合:照明系统采用低照明功率密度值和优化照明控制技术,围护结构采用外墙保温技术、屋顶保温技术和节能保温外窗,空调系统采用高COP直燃机组、变频水泵系统、高效率水泵、双速冷却塔风机、新风热回收等技术。分析了以上各因素对建筑节能率的影响,并选出对建筑能耗影响较大的8种节能技术为试验因素:水泵效率、外窗遮阳系数、变频水泵系统、照明功率密度、照明控制方式、直燃机能效比、外窗传热系数、外墙保温等,利用均匀设计法和多元线性回归分析方法,对该高层办公建筑进行整体性的能耗分析,研究各项节能技术对建筑能耗的影响水平,结果显示各项技术对该建筑能耗影响水平的显著性大小顺序为:照明功率密度照明控制方式水泵类型外窗遮阳系数水泵效率直燃机能效比(外窗传热系数和外墙保温对建筑能耗影响不显著);对该建筑空调能耗影响水平的显著性大小顺序为:水泵类型外窗遮阳系数水泵效率直燃机能效比照明功率密度外窗传热系数外墙保温(照明控制方式对空调能耗影响不显著)。在此基础上得到了适合该建筑的建筑节能优化组合方案,计算结果显示该方案的建筑节能率为68.5%,比实际建筑能耗降低13.78%。
[Abstract]:In 2015, the energy consumption of public buildings in China accounted for about 33% of the total energy consumption of buildings, and the energy consumption of high-rise office buildings accounted for about 30% of the energy consumption of public buildings. Taking a newly built high-rise office building in Changsha City as an object, this paper analyzes the influence level of various energy-saving technologies on the energy consumption of the building, and puts forward an optimized combination scheme of building energy-saving technology suitable for the building. Based on the basic information of the high-rise office building, the physical model is established and the energy consumption analysis of the actual building and the reference building is carried out based on the enclosing structure practice of the public buildings in the 1980s as a reference building. The results show that the actual building is more energy efficient than the reference building 60.53%. On this basis, the energy consumption of the office building is classified as the energy consumption of the lighting system, the energy consumption of the enclosure structure and the energy consumption of the air-conditioning system, and the influence of the different parameters of the existing energy-saving technologies on the above three energy consumption is analyzed. The energy saving technology combination of reducing the energy consumption of the building is obtained: low lighting power density value and optimized lighting control technology are adopted in lighting system, exterior wall insulation technology, roof insulation technology and energy saving heat preservation window are adopted for exterior wall insulation structure, roof insulation technology and energy saving heat preservation window, respectively. The air conditioning system adopts high COP direct combustion unit, variable frequency pump system, high efficiency pump, double speed cooling tower fan, fresh air heat recovery and so on. This paper analyzes the influence of the above factors on building energy saving rate, and selects 8 energy saving technologies which have great influence on building energy consumption as experimental factors: pump efficiency, sunshade coefficient of outer window, variable frequency pump system, lighting power density, lighting control mode, etc. The energy efficiency ratio of direct combustion turbine, heat transfer coefficient of outer window and exterior wall heat preservation, etc., are analyzed by uniform design method and multiple linear regression analysis method, and the influence level of energy saving technology on building energy consumption is studied, and the energy consumption of the high-rise office building is analyzed by means of uniform design method and multiple linear regression analysis method. The results show that the significant order of the influence of various technologies on the energy consumption of the building is as follows: lighting power density lighting control mode water pump window shade coefficient pump efficiency direct gas turbine energy efficiency ratio (external window heat transfer coefficient and exterior wall) The influence of heat preservation on building energy consumption is not significant); The significant order of the influence level of air conditioning energy consumption in this building is as follows: water pump type outer window sunshade coefficient pump efficiency direct gas turbine energy efficiency ratio lighting power density exterior window heat transfer coefficient external wall insulation (lighting control mode has no significant effect on air conditioning energy consumption). On this basis, the optimum combination scheme for building energy efficiency is obtained. The calculation results show that the energy saving rate of the building is 68.5%, which is 13.78% lower than the actual building energy consumption.
【学位授予单位】：湘潭大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU972;TU201.5

【参考文献】