【作者】 康炜；

【导师】 赵蕾；

【作者基本信息】 西安建筑科技大学 ， 供热、供燃气、通风与空调系统， 2011， 硕士

【摘要】 目前,建筑能耗已占到国民经济的30%,而其中公共建筑空调能耗又占建筑能耗相当大的比重。公共建筑空调制冷系统的具有很大的节能潜力,本文在空调系统节能应用及迅速发展的背景下提出。本文采用EnergyPlus动态模拟软件分析了高新国际商务中心空调系统能耗状况,并研究了不同空调方案的能耗水平,对空调制冷系统的设计方案进行了优化。首先,对西安高新国际商务中心空调系统运行时的室内热环境进行了实测,并监测了制冷系统的实际运行参数,分析了其能耗状况以及冷机的运行状况。采用Energy-Plus软件在实测气象条件下模拟了冷机的制冷量以及蒸汽能耗,与实测值进行了对比分析,揭示出模拟值与实测值的偏差所占的时间频率。然后,采用E+软件对高新国际商务中心空调制冷系统的供冷季能耗进行了模拟,得到逐时冷负荷,分析绘出了冷负荷的分布频率表。研究了冷冻水以及冷却水参数对空调制冷系统总能耗以及各个设备能耗的影响,以及送风温度对空调制冷系统能耗的影响。最后,针对蒸汽溴化锂吸收式冷机、压缩式制冷机、冰蓄冷空调以及土壤源热泵四种冷源型式,CAV系统、VAV系统以及辐射冷板空调系统三种空调末端类型的组合,模拟分析了12种制冷空调与系统组合方案。分析了供冷季的能耗状况,得出各部分能耗以及总能耗值。采用EUI与CEC系数对各类型空调系统的能耗进行评价,并结合各种空调系统的适用性,得出离心式冷水机组与辐射冷板空调系统为适合于本建筑的最优化空调制冷系统型式。更多还原

【Abstract】 Currently, building energy consumption has accounted for 30% of the national economy, and Air-conditioning energy consumption of public buildings has a Large proportion. Public buildings air-conditioning system has great potential for energy saving, under the background of the building energy efficiency and the energy for air-conditioning system, this thesis is discussed.In this paper, the status of energy consumption was simulated from dynamic simulation software Energy-Plus for Gao Xin International Business Center. Also analyzed the energy consumption Condition of different air-condition project, and got the optimizing project. Major are as follows:First, Xi’an Gao Xin International Business Center was selected to study the energy consumption of its air-conditioning and refrigeration system. The indoor thermal environment was measured and operational parameters of the refrigeration system were monitored in summertime. The energy consumption was analyzed to acknowledge its part-load operation condition. The software of Energy-Plus was used to simulate the cooling capacity of chillers and the amount of its steam consumption. The simulation results were compared with monitoring data. It reveals the frequency distribution of their deviation ranges.Then, the energy consumption of air-conditioning and refrigeration systems was simulated for cooling season by E+ for Gao Xin International Business Center, results indicate the load changes and the cooling load of the frequency table. And to study the chilled water and cooling water parameters on the total energy consumption and air conditioning systems the impact of energy consumption of each device, and supply air temperature on the energy consumption of air conditioning and refrigeration.Finally, Li-Br absorption refrigeration of steam、compressed air-conditioning refrigerator、ice-storage air-conditioning refrigerator and heat pump air-conditioning refrigerator for four cold source types, CAV systems, VAV systems and radiant cooling system for the three terminal types, the different cold source and air-conditioning end equipment combination of air-conditioning system ,obtained the 12 types of air- conditioning systems. Its energy simulation analysis, and the total energy consumption of each part of the energy value, and as a basis for comparative analysis of the air conditioning energy consumption. Take the coefficient of energy consumption (CEC) and energy utilization index (EUI) as measure of energy performance of the air-conditioning system. and with the various types of air-conditioning system according to the applicable conditions, the air-conditioning combined the compressed refeigerator with radiant cooling system wes the optimal project of air-conditioning syetem for this building.更多还原