候车室论文：某候车室气流组织的模拟研究.doc

候车室论文：某候车室气流组织的模拟研究【中文摘要】本文以无锡火车站为研究对象,现场测试温度、速度、湿度、CO2浓度等参数,并分析这些参数的变化规律,再运用Airpak模拟软件和候车室额实际尺寸进行建模,分析现有空调系统的气流组织,得出温度、速度、湿度、C02浓度场,得到模拟的结果与实测数据相符,说明了该模拟软件的可行性。本文通过利用问卷调查和现场测试的方法,了解到室内的空气品质差,提出了适用于候车室的三种常用的三种送风方案,分别为上(顶棚)送下回、下送上回和中送上回。再分别运用Airpak模拟软件模拟这三种送风方案的温度场、速度场、CO2浓度场,根据他们各自的特征和舒适性进行分析。得出以下结论：1.方案一,采用上(顶棚)送下回的送风方式,室内的平均温度为26,平均风速为0.43m/s,速度和风速都大于设计需求；2.方案二,采用下(侧)送上回的送风形式,虽然平均温度、平均风速、平均CO2浓度都在设计规范的范围内,但是在靠近送风口的风速较高,在0.6m/s左右,远远大于设计规范的要求；3.方案三,采用中送上回的送风方案,平均温度为25,平均风速为0.24m/s,平均C02浓度为474ppmv,都达到了设计的要求。研究结果表明原有的空调系统基本符合设计规范,但是方案三为最佳的送风方案。图表参【英文摘要】This thesis will take Wuxi railway station as its research. Filed test is used in this thesis, main test about temperature, velocity, relative humidity, carbon dioxide concentration. Airpak simulation software as a tool, and conduct a simulation study on the existing air conditioning system, A comparative study are carried out in terms of thermal field, velocity field, relative humidity filed, and carbon dioxide concentration filed. The results show that the simulation software is feasible.Results of field test and questionnaire investigation as to air quality of waiting room indicated that the indoor air quality was very poor. In this paper, three common air distribution forms were made and the accuracy of the Airpak model designed, these three designs are:up-supply (ceiling) down-return, up-return down-supply, central air-conditioning. Then Airpak was applied to numerically simulating the indoor temperature field, velocity field and carbon dioxide concentration field. Their features and comfort will be analyzed respectively.The research result has indicated that:1. Program, up-supply(ceiling) down-return, the average temperature is 26in room, the average wind velocity in the mark area is 0.43m/s, the average temperature and wind velocity are greater than the design requirements;2. Program, up-return down-supply, although the average temperature, average speed and carbon dioxide concentration are meeting the design requirements, but the velocity is 0.6 m/s in some place, the design specifications of the velocity is 0.3m/s, its velocity is greater than the design specifications of the velocity;3. Program, all thermal environments meeting the design specifications.The results show that the all air conditioning system basically meeting the design requirements, but the Program III is the best air-conditioning.【关键词】候车室 气流组织 空气品质 Airpak【英文关键词】waiting room air distribution air quality Airpak【目录】某候车室气流组织的模拟研究摘要5-6Abstract6引言14-151 绪论15-191.1 概述15-161.2 国内外研究现状16-171.3 研究课题的提出17-181.4 课题研究的主要内容18-192 课题研究的理论基础19-362.1 新风量的确定19-202.2 热负荷、冷负荷、湿负荷的计算20-232.2.1 冷负荷的计算20-212.2.2 热负荷的计算21-222.2.3 湿负荷的计算22-232.3 人体舒适度指标23-292.3.1 温、湿度指标23-242.3.2 风速指标24-252.3.3 空气年龄指标25-262.3.4 二氧化碳浓度指标26-272.3.5 热舒适指标(PMV和PPD)27-292.4 空调风口类型和气流组织的介绍29-322.4.1 常见的风口类型29-302.4.2 常见的气流组织类型30-322.5 模拟软件的理论基础32-362.5.1 Airpak模拟软件的简介32-332.5.2 Airpak模拟软件的应用领域332.5.3 Airpak模拟软件的动量方程33-342.5.4 Airpak软件模型求解的具体步骤34-352.5.5 Airpak模拟软件的结果分析35-363 物理模型的建立与现场数据的整理36-513.1 某火车站的简介36-373.1.1 无锡地理位置363.1.2 无锡气候条件36-373.1.3 无锡火车站的简单介绍373.2 物理模型的建立37-403.2.1 外拍图片与简介37-383.2.2 候车室的内部设施383.2.3 模型参数设置的介绍38-403.3 现场实测数据的整理40-453.3.1 现场测量工具的介绍与简介40-423.3.2 某候车室内人数的统计42-433.3.3 现场测量的数据整理与分析43-453.4 对候车室内热环境的问卷调查45-503.4.1 资料收集及调查的主要参数45-463.4.2 调查的结果与分析46-503.5 本章小结50-514 现有空调系统的模拟与分析51-674.1 现有空调系统介绍51-534.1.1 现有空调系统的送风形式514.1.2 空调系统相关参数的计算结果51-534.2 边界条件的设定53-544.2.1 围护结构的边界参数534.2.2 模拟的相关参数53-544.3 模拟结果与分析54-664.3.1 温度场模拟54-604.3.2 速度场模拟60-624.3.3 湿度场模拟62-644.3.4 二氧化碳浓度场模拟64-664.3.5 热舒适性评价(PMV和PPD)664.4 本章小结66-675 不同气流组织方案的模拟研究67-845.1 上送下回的模拟67-725.1.1 温度、速度、CO_2浓度场模拟67-695.1.2 温度、速度、二氧化碳浓度的数据整理69-715.1.3 热舒适度评价(PMV和PPD)71-725.2 下侧送上回模拟72-775.2.1 温度、速度、二氧化碳浓度场模拟72-745.2.2 温度、速度、二氧化碳浓度的数据整理74-765.2.3 热舒适度评价(PMV和PPD)76-