【作者】 卢昱；

【导师】 刘刚；

【作者基本信息】 东华大学 ， 供热、供燃气、通风与空调工程， 2008， 硕士

【摘要】 工位空调较传统空调而言,能够提供更好的热舒适性和更高的空气品质,并能在一定程度上降低建筑能耗。隔板工位空调是工位空调中的一种,它适用于开放式大办公空间,其风口置于不同工位之间的隔板上,距离使用者较近,因此对于隔板工位空调而言,其风口的形式将直接影响到工位空调系统的性能。而送风量、送风温度和背景空调送风参数的选择也会对隔板工位空调的舒适性、节能性产生很大的影响。本文以典型办公建筑的工位空调为研究对象,以数值模拟与实验测量为主要研究手段,研究了办公建筑中工位空调系统的气流组织和微环境评价。利用CFD商业软件FLUENT,研究了工位空调单独运行和背景空调与工位空调联合运行下的人体舒适性、能量利用系数以及个人暴露率。在人工环境室内模拟实际的办公间,搭建一套隔板空调系统实验台进行送风性能的实验,研究了隔板系统的送风特性,并将实验结果与模拟结果做了对比分析,从而验证了模拟实验的可行性与准确性。对现代办公建筑办公区域的布置形式及空调的分类形式做了调查,将变风量送风形式应用于工位送风系统中,详细研究了变风量形式在工位送风系统应用中各环节的控制方法及依据。按典型办公建筑建立数学模型,通过计算各部分耗电量,对工位送风系统与传统送风系统的运行能耗进行比较,得到了工位送风系统较传统定风量系统节能22～35%这一结论。文中通过实验研究、数值模拟及模型分析,得出一些规律性的结论,为预测、分析、评价采用工位空调形式房间的气流分布奠定了基础。更多还原

【Abstract】 Task-ambient air conditioning (TAC) system with the ability of reducing energy consumption to some extent can produce a better thermal environment and breathing air quality than traditional air conditioning. As one type of the TAC system, partition-type TAC applies to the open office space. As its nozzles located on the partitions among work units are close to the people, so there needs more discussion about the comfort of TAC system. The supply nozzles and the parameters of the supply air including temperature and volume will effect its thermal environment and energy consumption.Based on the major means of numeric simulation and lab test, this paper studies the airflow distribution and microenvironment assessment of TAC system according to the typical TAC system in office building. Thermal comfort, energy utilization coefficient and personal exposure effectiveness under TAC system and also when running in company with background air conditioning are investigated by CFD commercial software FLUENT. A workstation simulating a typical office desk with partition-type TAC system is established in a controlled environment chamber to research the performance of TAC system. Results from tests are compared to those from numerical simulation which proves the feasibility and the veracity of simulation experiments.The paper surveys the regional office layout and the air-condition classification in modern office buildings, applies VAV to TAC system, detailedly studies the control method and the basis of each tache when VAV system being used, establishes a mathematical model in accordance with typical office building, calculates the total power consumption, compares the energy consumption between TAC system and traditional CV system, and finally educes results that the former can be able to reduce energy consumption by 22～35%.Conclusions obtained by test, numeric simulation and model analysis have established stable basis for predicting, analyzing and evaluating for air distribution of task-ambient air conditioning.更多还原