【作者】 赵立前；

【导师】 郑茂余；

【作者基本信息】 哈尔滨工业大学 ， 供热、供燃气、通风与空调工程， 2007， 硕士

【摘要】 余热回收利用是重要的节能措施之一,排风的余热回收是建筑节能的重要组成部分。小型(住宅、户用)通风换气装置近年来迅速发展,小型热管式通风换气装置得到了一定应用。小型热管式通风换气装置是管壳和常温热管所组成的热管式通风换气回收装置。它不但解决新风换气问题,也起到了节能降耗的作用,具有良好的应用前景。就目前而言,对热管式回收装置大量的实验和理论研究大多集中在工业的应用,小型热管式通风换气装置研究较少,而其理论和应用大多采用工业用热管的理论上。本文主要选择最优常温工况下的热管,完成对小型通风换气装置用热管和小型通风换气装置的模拟计算和优化设计研究。在参阅相关文献的基础上,结合一定的理论分析,对小型热管式通风换气装置热管的几何尺寸、倾斜角、充液量、工质的物性、工质温度、管质材料等进行选择,分析其传热机理,运用集总参数法和热阻网络分析,结合Matlab语言编程对热管进行设计计算,优化和改进热虹吸管的结构参数,使其发挥最大限度的传热效能。在热管基本定型的情况下,对小型通风换气装置提出两种适用的优化设计模型,并采用离散计算模型,运用有效度—传热单元数(ε- NTU)法,通过多次迭代对小型通风换气装置内温度物的模拟计算。本课题所做的工作是选择适用于热管式通风换气装置的最优热管,设计最优的热管式通风换气装置并进行模拟研究,并分析其回收效率。更多还原

【Abstract】 Surplus heat utilization is an important method in the energy conservation and the surplus heat utilization in the building ventilation is an important part of the building energy conservation. The compact ventilation equipments (used in the residential districts) have been developing quickly during these years and the heat pipe ventilation equipments have been used widely.The compact heat pipe ventilation equipment is made of the tube shell and the heat pipe at the normal temperature. It not only settled the problems of exchanging fresh air, but also saved energy, so it’ll be used widely in the not too far future. Nevertheless, in the nowadays, the experimental and the theoretic research of the heat pipe is mainly concentrated on the industrial utilization, and we usually use the theory of the industrial surplus heat utilization. The paper is intended to choose the best heat pipe ventilation equipment working at the normal temperature, and then finish simulating calculations and optimization designs on the compact ventilation equipments.On the base of reading some correlated references and the theoretic analysis, the paper designed the sizes of the equipment, the obliquity of the equipment, the percentage of the liquid, the properties and the temperature of the liquid, the materials of the tube and so on. The paper also analyzed the process of heat transfer in the tube, used the concentrated parameter method and the heat resistance network analysis method to design the heat pipe, optimized the construction parameters of the thermosyphon in order to do best in the heat transfer with the language of Matlab. After the designing of heat pipe, the paper proposed two kinds of optimizing models and calculated the temperature of the liquid in the tube, using the discrete calculation model and the method ofε-NTU.The main task of the paper is to choose the optimized heat pipe equipment, simulate the conditions of the heat pipe ventilation equipment, and analyze the efficiency of the surplus heat recovery.更多还原