中庭论文：中庭建筑空调负荷研究.doc

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中庭论文：中庭建筑空调负荷研究【中文摘要】随着城市建设的发展，可引入室外自然光、增强设计空间感的中庭建筑不断涌现出来。但由于中庭的引入，使得建筑热环境影响因素多且复杂，传统的空调负荷计算方法难以准确描述中庭建筑回廊及走廊的负荷分布状况,进而难以对中庭建筑进行合适的空调系统设计。本文以中庭建筑为研究对象，根据中庭建筑传热及流动特点，建立适合中庭建筑传热和流动的物理、数学模型。使用三维计算流体力学软件得到中庭建筑空气流通区域的气流流动情况以及温度分布情况；并与实测值进行对比，验证三维模型的正确性。使用EnergyPlus软件计算I乂域温度及负荷，取出三维计算结果的区域值进行对比，验证EnergyPlus模型的正确性。分析比较了不同朝向中庭建筑实际状态和基准状态负荷；提出设计负荷差概念，对中庭建筑各层设计负荷差和其占各层基准设计负荷的百分比进行分析；研究了同一时刻中庭引起的负荷转移量值、影响区域和影响范围；分析比较了不同气象条件下的中庭建筑实际状态和基准状态负荷，总结各层设计负荷差和其占各层基准设计负荷的百分比的规律。研究结果表明，中庭的存在对中庭建筑回廊区域负荷影响较大，对走廊区域负荷影响较小；同时随楼层的增高设计负荷差不同程度的增加，但同层间不同朝向单位面积负荷差相同；确定了产生负荷差的主要原因是由于气流流动空气交换嬉差的影响。通过本文的研究，对中庭建筑回廊及走廊的空调负荷提供了一定的数值参考,对于工程实际中负荷计算有一定的指导意义。【英文摘要】The bui 1 dings designed wi th atrium are more and more popular with outdoor natural light and enhancing the sense of space.However,the impact factors of thermal environment in bui 1 ding become more complex because of the introduction of the atrium.The corridor air-conditioning load distribution is difficult to be accurately described with traditional air-conditioning load calculation method.Therefore,it is hard to conduct the suitable designs of air-conditioning systems with atriums.The research objection at present is atrium building.Physical and mathematical models are established according to the heat transfer and flow characteristics of atrium buildings.The air flow and temperature distributions in the atrium area are simulated by three-dimensional computational fluid dynamics software package,and the three-dimensional model is verified by comparing with the measured results.The temperature and air-conditioning load are calculated by EnergyPlus and the validation of the EnergyPlus model is performed.The actual state and referential state air-conditioning 1oads are analyzed by EnergyPlus.The concept of design load difference is defined.The atrium bui1 ding of design load difference and thereof it’s percentage to referential state air-conditioning 1 oad of various layers are analyzed.The air-conditioning load transfer value and the distant of influence causing by atrium are researched and the actual state and reference state air-conditioning load in different meteorological conditions is studied.The discipline of each layer design load difference and thereof it’s percentage to referential state air-conditioning load are summed.The results show that the influence of the present atrium on air-conditioning load of corridor nearby atrium is more weighed than that of corridor far away atrium.The design load difference increasing in varying degrees complying with increasing of the stories,and the air-conditioning load per area at different orientation corridor are the same.It is assured that the air enthalpy by air flow exchanging is the main factor of the design 1oad difference.By the present study,numerical reference on air-conditioning 1oad of the corridor in atrium building is provided for engineering.【关键词】中庭空调负荷数值模拟【英文关键词】A tri um Air-conditioning load Numerical simulation【目录】中庭建筑空调负荷研究摘要6-7 Abstract 7第1章绪论10-17 1.1研究背景10-12 1.1.1中庭概述10-11 1.1.2中庭建筑的特点11 1.1.3问题的引出11-12 1.2国内外研究现状及不足12-14 1.2.1研究现状12-13 1.2.2存在的不足13-14 1.3研究内容和方法14-16 1.3.1研究内容14 1.3.2研究方法14-15 1.3.3研究思路15-16 1.4研究意义16-17第2章建筑中庭热过程及分析方法17-28 2.1中庭的热传递过程17-19 2.1.1建筑热传递过程17-18 2.1.2中庭建筑热传递特点18-19 2.1.3太阳辐射作用19 2.2建筑热传递数学模型19-23 2.2.1透明围护结构热平衡方程20 2.2.2非透明围护结构热平衡方程20-22 2.2.3室内空气热平衡方程22-23 2.3传热及流动数学模型23-26 2.3.1控制方程23-24 2.3.2湍流模型方程24-26 2.4模拟软件26~28 2.4.1 EnergyPlus 26~27 2.4.2 Fluent 27-28第3章中庭建筑热环境现场测试及结果分析28-34 3.1现场测试28-29 3.1.1建筑概况28 3.1.2测试R的28 3.1.3测试步骤28-29 3.2测试结果与分析29-33 3.3小结33-34第4章中庭建筑模拟结果及分析34-45 4.1区域模拟计算34-38 4.1.1模型建立34-36 4.1.2计算结果36-38 4.2三维计算38-43 4.2.1模型建立38-39 4.2.2计算结果39-43 4.3计算结果与实测结果对比43-44 4.4小结44-45第5章中庭建筑空调负荷计算及分析45-70 5.1模型的建立45-49 5.1.1工程概况45 5.1.2原始数据45-46 5.1.3建模过程46-49 5.2研究思路49-50 5.3计算结果分析50-69 5.3.1南北朝向时的空调负荷50-58 5.3.2东西朝向时的空调负荷58-65 5.3.3不同气候分区对空调负荷的影响65-69 5.4小结69-70结论70-71致谢71-72参考文献72-75攻读硕士学位期间发表的论文及科研成果75【丹采买全文丹】1 39938848 138113 721同时提供论文写作一对一辅导和论文发表服务.保过包发.t说明】本文仅为中国学术文献总库合作提供，无涉版权。作者如有异议清与总库或学校联齐。