中央空调论文：某中央空调系统节能改造及能耗分析

中央空调论文：某中央空调系统节能改造及能耗分析 中央空调论文:某中央空调系统节能改造及能耗分析 【中文摘要】建筑耗能已成为我国能源消耗三大“能耗大户”之一。目前,建筑能耗约为社会总能耗的30%左右。在我国既有近400亿m~2建筑中,其中99%为高能耗建筑,且新建建筑中的95%以上也在高能耗建筑之列。我国机关办公建筑和大型公共建筑面积不足全国城镇总建筑面积的4%,但每年电耗量却占到全国城镇电耗总量的22%,单位面积年耗电量高达普通居民住宅的10,20倍。另一方面,建筑能耗约占我国社会总能耗27.4%,而空调和供暖能耗约占建筑总能50%~70%。大型公共建筑的高能耗问题日渐突出,这类建筑的节能改造工作成为当前建筑节能的重点。本文以重庆大学主教学楼为研究对象,首先针对原有中央空调系统运行过程中出现“大流量小温差”问题,对原有空调系统进行节能检测及诊断分析并提出相关节能改造建议,为下一步空调系统节能改造打下基础。针对主教楼空调系统节能改造,引入电量分项计量及冷量分楼层计量技术,重点研究能耗监控平台的建设,并基于本 工程 路基工程安全技术交底工程项目施工成本控制工程量增项单年度零星工程技术标正投影法基本原理 冷量计费要求,提出主教楼空调冷量计费 方案 气瓶 现场处置方案 .pdf气瓶 现场处置方案 .doc见习基地管理方案.doc关于群访事件的化解方案建筑工地扬尘治理专项方案下载 设计并予以验证。基于建筑整体能耗分析模型及能耗分析方法,先对主教楼进行逐年、逐月建筑总能耗分析,得出主教楼总体用能特性并分析用能原因;然后从制冷季、典型空调月对建筑各分项能耗进行研究分析,并对空调系统各分项能耗进行逐日能耗分析,得出建筑各分项能耗及空调系统各分项能耗的用能指标及用能特性。建立基于分项计量的空调节能诊断分析方法,基于主教楼中央空调系统运行及能耗监 测数据,通过系统运行工况量化诊断指标分析,从冷冻水及冷却水温 差、冷机负荷率及运行性能系数COP、水系统输送系数等方面对空调 系统运行工况进行诊断分析,并研究不同负荷率对冷机COP的影响。 并选择冷机高负荷率下典型空调日,对中央空调系统运行工况进行逐 时监测分析。最后,对改造前后空调系统能效测试情况进行对比分析, 比较改造前后各运行设备能耗所占总能耗比重变化以评价系统节能 改造效果。 【英文摘要】Building energy consumption has become one of the three “major energy consumers” in our country’s energy consumption. Currently , building energy consumption accounts for about 30% of the total social energy consumption. There are the existing buildings of nearly 400 million square meters,of which 99% are high-energy consumption buildings,and more than 95% of the new buildings are in the same column as well. The areas of state organs of office buildings and large public constructions accounts for the town total construction area less than 4%,but the power consumption quantity is 22% of the total of urban consumption each year, and the power consumption per unit area is as high as 10 to 20 times of ordinary residential level. On the other hand, building energy consumption accounts for about 27.4% of total energy consumption in our society, while the air conditioning and heating energy consumption of buildings can always be about 50% to 70% of total energy consumption. Large public buildings have become increasingly prominent high-energy consumption, energy-saving type of construction work as the focus of the current building energy efficiency. As the prominent problems of high energy consumption of the large-scale public buildings,for this kind of buildings, the energy saving renovation work becomes the focus of the current building energy efficiency.In this paper,the main teaching building of Chongqing University was taken as the research object,first of all,According to the problem of “big flow, small temperature difference” appeared in the process of operation, the original air conditioning system was energy-efficiency tested,and the diagnosis analysis and transformation measures related were raised, which lay the foundation for the energy saving transformation of air conditioning system in the next. In allusion to the energy saving transformation of the main teaching building, the technologies of electric quantity breakdown and cold quantity measurements are introduced to key research the construction of the energy-consumption monitoring system. Further, based on the project pricing requirements, the cold quantity pricing scheme of the main teaching building is designed and verified.Based on the overall energy consumption analysis model and of method, total building energy consumption is analyzed year after year and month after month. The energy consumption characteristics are put forward and the causes are analyzed. Then, on the research and analysis of respective energy consumption of refrigeration season and typical air conditioning month and the respective energy consumption of air conditioning system day by day, the energy consumption indicators and characteristics are concluded.Building up energy-saving diagnosis analysis method which based on the partial measurement of air conditioning, based on the central air conditioning system operation and energy consumption monitoring data of the main teaching building, system operation condition quantitative diagnosis indexes are analyzed. Chilled water and cooling water temperature differences, water chillers load rate, operation performance coefficient COP and water system transmission coefficient are Researched and analyzed to evaluate of the air conditioning system operating conditions. The influence of different load rate to COP is researched. Typical day of air conditioning water chillers under a high load rate is chosen for hourly monitoring analysis on the central air conditioning system operation condition.Finally, through the contrast and analysis of the testing for the air conditioning system of energy efficiency before and after the reconstruction, the proportion changes of respective operation equipment of the total energy consumption are being compared to evaluate the energy-saving transformation effects. 【关键词】中央空调 节能改造 分项计量 能耗分析 节能诊断 【英文关键词】the central air conditioning energy-saving transformation breakdown measurement energy consumption analysis energy-saving diagnosis 【 目录 工贸企业有限空间作业目录特种设备作业人员作业种类与目录特种设备作业人员目录1类医疗器械目录高值医用耗材参考目录 】某中央空调系统节能改造及能耗分析 中文摘要 3-4 英文摘要 4-5 1 绪论 8-20 1.1 我国能源形 势与建筑能耗 8-9 1.2 大型公共建筑能耗现状及节能潜力 9-11 1.3 国内外建筑节能诊断的研究现状 11-18 1.3.1 国外建筑节能诊断研究现状 11-13 1.3.2 国内建筑节能诊断研究现状 13-18 1.4 本文研究的重点及主 要内容 18-20 2 改造前主教楼空调系统节能检测及分析 20-38 2.1 工程概况 20-21 2.1.1 建筑概况 20 2.1.2 空调系统概况 20-21 2.2 空调系统运行记录 统计分析 21-23 2.3 改造前空调系统的节能检测 23-35 2.3.1 检测内容及检测仪器 23 2.3.2 冷冻水系 统节能检测分析 23-28 2.3.3 冷却水系统节能检测分析 28-35 2.4 本章小结 35-38 3 空调系统节能改造及冷量计费方法 38-62 3.1 空调系统的节能改造 38-39 3.2 主教楼能耗监控平台建设 39-49 3.2.1 基于 PLC 与 IFIX 的 SCADA 系统构成 39-40 3.2.2 就地计算机控制系统(下位机) 40 3.2.3 中央操作站(上位机) 40-49 3.3 冷量计费系统设计研究 49-59 3.3.1 中央空调计费的主要方法 49-53 3.3.2 冷量计费需考虑的因素 53 3.3.3 重庆大学主教楼冷量计费方案设计研究 53-59 3.4 本章小结 59-62 4 主教楼建筑能耗分析 62-78 4.1 建筑节能诊断依据及原理 62 4.2 初步节能诊断分析的平衡原理 62-65 4.3 建筑能耗分析方法 65 4.4 主教楼能耗建筑用能分析 65-75 4.4.1 建筑能耗数据处理方法 65-66 4.4.2 建筑总能耗分析 66-71 4.4.2 建筑分项能耗分析 71-75 4.5 本章小结 75-78 5 空调系统节能诊断分析 78-98 5.1 空调系统节能诊断依据及原理 78 5.2 基于分项计量的空调节能诊断分析方法 78-85 5.2.1 空调系统划分[] 78-79 5.2.2 空调系统节能诊断指标体系 79-85 5.3 空调系统节能诊断分析 85-93 5.3.1 冷机运行工况诊断分析 85-91 5.3.2 水系统输送系数 91-93 5.4 典型空调日运行工况监测分析 93-95 5.4.1 蒸发器进出水温度及温差 93 5.4.2 冷凝器进出水逐时温度及温差 93-94 5.4.3 主机逐时能效及空调 系统逐时能效(除空调末端外) 94-95 5.5 本章小结 95-98 6 改造前后空调系统能效对比分析 98-104 6.1 空调系统改造前系统能效 98-99 6.2 空调系统改造后系统能效 99-102 6.2.1 室外空气 参数 转速和进给参数表a氧化沟运行参数高温蒸汽处理医疗废物pid参数自整定算法口腔医院集中消毒供应 100 6.2.2 室内平均温湿度 100 6.2.3 改造后空调系统能效 100-102 6.3 本章小结 102-104 7 结论及展望 104-108 7.1 本文主要结论 104-105 7.2 建议及展望 105-108 致谢 108-110 参考文献 110-114 附录 114-119 【备注】索购全文在线加好友QQ:139938848 同时提供论文写作一对一指导和论文发表委托服务。 本文由学术文献总库合作提供，无涉版权。作者如有异议请与总库或学校联系。