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长沙金外滩某社区工程冷热电联产可行性研究报告DOC

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随着人民生活水平的提高,空调已经成为住宅建筑与非住宅建筑的难本要求。 在典型的既需要制冷以需要制热的人口密集的城镇,特别是夏热冬冷地区长沙, 集中供热和区域制冷或者冷热电联产系统成为一种合理的空调方式,它们能在不 同类型的建筑最大限度的梯级利用初级能源。 基于芙国绿色建筑认证绿色建筑邻里社区(LEED-ND)绿色基础设施和建筑 (GIB)要求,对金外滩某社区工程三、四、五期公共建筑区域型冷热电联产系 统进行技术特征、经济效益和环境影响可行性研究。金外滩某社区丄程项目位于 湖南省长沙市,包含65万平方米综合社区/丨:发项目。在金外滩某社区建筑工程中 使用各种不同的能源影响来衡量,运用Energyplus能耗模拟软件进行冷热电模拟, 模拟结果显示,金外滩某社区工程在ASHRAE90.1-2007的基准上使用不同节能 措施使得金外滩某社区工程电负荷减少31.8%,社区工程三、四、五期公共建筑 部分冷热负荷减少34.85%。对两套方案进行对比,这两种系统分别是:方案一, 采用2100kW内燃发电机2台,回收内热机发电机余热用于余热型溴化锂吸收制 冷机使用。发电机为建筑提供基本电力负荷,余热型溴化锂吸收制冷机为建筑供 热供冷;h'巢二利用电网供电,直燃型溴化锂吸收制冷机供热供冷。 —研究小了 //案—两ft—内應发_电机令年共运行—13g48—小吋,艾中满--负荷运行--- 10175小时,系统一的全年能源利用率为83.6%。方案一对比方案二,全年相对 节能率为31%,并且系统-每年节省1578万元运行费用,动态投资回收期为3。2 年。环境分析显不,方案…比方案二每年要减少2418吨二氧化碳排放。 关键词:区域供热和供冷;冷热电联产;建筑节能;内燃机;溴化锂吸收制冷机; 成分效益分析 L<:沙金外滩某朴区T.程冷热屯联产行fk分祈 Abstract With the improvement of people's living standards, air conditioning becomes the basic requirements for residential and non-residential buildings. District heating and cooling (DHC) or combined heating cooling and power (CCHP) system is a rational way for domestic heating and cooling in densely populated towns, especially in areas with hot summer and cold winter such as Changsha. DHC or CCHP can maximize primary energy efficiency by cascading the energy uses with different building types. On the basis of the principles of Green Infrastructure and Building (GIB) in LEED for Green Neighborhood Development (LEED-ND), this paper studies the technical feasibility, economic soundness, and environmental effectiveness of a CCHP energy system in Jinwaitan project,a 6.5 million square feet mixed-use neighborhood development project in Changsha,Hunan Province, China. Various energy efficient measures are applied in the building design, and the simulation results by Energy Plus show that the buildings saves 31.8% electricity and 34.85% thermal energy comparing to the basecase as defined by ASHRAE 90.1-2007. Two case are compared in the study. The two energy systems are: System One. two internal combustion engines (ICE) with power generation capacity 2100 kWe each, and associated Water-LiBr absorption chillers to recover the rejected heat from ICEs. The system will provide electric base load for buildings, and the recovered heat will be used to produce heating and cooling for buildings; System Two, The buildings will use electricity from power grid, and the heating and cooling will be provided by natural gas fired absorption chillers. The study shows that System one can operate 13,848 hours annually with 10,1 75 hours in full load operation. The annual energy efficiency of System one is about 83.6%. System one demonstrates 31% more efficient than System two, The cost benefit analysis indicates that System one saves ¥15,780,000 RMB Yuan operation cost annually, and the payback period for System one is about 2.9 years. The environmental analysis shows System one will save 2,4】8 tons of Carbon Dioxide emission annually than System two. Key Words: District Heating and Cooling; Combined Cooling Heating and Power; building energy efficiency; internal combustion engine; water lithium bromide absorption chiller; cost benefit analysis in am i.学位论义 目录 学位报告版权使用授权书 I M H Abstract Ill 第i章绪论 1 l.i弓丨§ 1 1.2冷热电联产现状和前景分析 1 1.3本文主要研究内容 3 第2章冷热电联产系统分类 5 2.1冷热电联产能源利用形式 5 2.2冷热电联产动力子系统 6 2.3冷热电联产系统的规模 8 第3章金外滩某社区工程项目概述 10 3.1项目背景 10 3.2气象设计条件 11 3.3节能措施介绍 12 第4章—金外滩某社区工程冷热电负荷分析 :..14 4.1负荷指标法缺陷 14 4.2金外滩某社区工程负荷计算 14 4.2.1卟算软件及初设条件 14 4.2.2模拟分析软件计算法 15 4.2.3建筑迖模 16 第5章冷热电联产系统集成及性能分析 21 5.1系统构思 21 5.2系统设计 21 5.3两种方案设备选型 23 5.3.1方案-设备选增 23 5.3.2方案二设备选增 26 5.4热力学性能 26 5.5经济与环境对比分祈 27 30