基于温湿度独立控制技术的溶液除湿系统研究

发布时间：2018-05-20 15:24

  本文选题：温湿度独立控制 + 溶液除湿　； 参考：《沈阳建筑大学》2015年硕士论文

【摘要】：我国人均能源拥有量较低,随着生活水平的不断提高和室外环境逐渐恶劣,人们对室内生活环境要求也逐渐升高,空调的使用越来越普及,传统空调系统也暴露出越来越多的问题与不足,因此,基于温湿度独立控制溶液除湿空调系统应运而生。目前有很多学者关于该系统在高湿地区的应用进行了研究,但是对其在人口密集、空调需求紧迫、耗能较多的夏热冬冷地区的研究较为缺乏。本文在国内外对温湿度独立控制技术和除湿技术研究的基础上,主要从以下几方面进行研究:(1)总结常规空调系统的不足之处,分析基于温湿度独立控制技术的溶液除湿空调系统的特点、节能效果和应用前景,在前人研究的基础上设计适合本课题的溶液除湿系统;(2)利用fluent数值模拟软件对系统中的除湿填料塔建立物理模型和数学模型,采用体积平均法和多孔介质模型,对从文献[55]随机选取的六组数据进行模拟,将结果与实验数据进行对比分析,结果表明模拟结果与实验数据基本一致,且两者之间的误差率在20%以内,验证了该模型具有较高的可信度;(3)对夏热冬冷地区夏季室外空气参数进行分析,并利用所建模型对该地区的12个城市的室外参数进行模拟研究,结果表明,溶液除湿系统的除湿效率在60%左右,部分地区高达62%,说明溶液除湿在夏热冬冷地区具有良好的应用前景;(4)本文以南京某办公楼为例,从初投资和运行能耗两方面,对温湿度独立控制溶液除湿空调系统和常规空调系统经济性进行对比分析,结果表明,初投资方面,溶液除湿独立新风系统的初投资比常规空调系统多533900元;运行能耗方面,溶液除湿独立新风系统的运行总能耗比常规空调系统少57321.6kWh,节省能耗16.43%;温度侧处理若采用天然冷源,则年运行费用可减少93796.8元,只需要2.5年即可回收资金,进一步证明了溶液除湿独立新风系统在夏热冬冷地区有良好的应用效果。夏热冬冷地区气候夏季炎热、冬季寒冷、涉及省市多且人口稠密,由于全球气候变暖,这一地区夏季温度超过30℃的天数逐渐增多,38℃～39℃也属常见,而且这一地区的建筑围护结构的保温隔热性能差,因此这些地区空调的需求量很大,又由于缺乏规范的管理和科学的指导,导致该地区空调能耗急剧增加。本文通过模拟和工程实例研究,表明温湿度独立控制溶液除湿空调系统在夏热冬冷地区有良好的节能效果,为切实改善该地区室内生活环境、降低空调能耗,以及进一步科学研究提供资料。
[Abstract]:Energy per capita in China is low. With the improvement of living standards and the deterioration of outdoor environment, people's requirements for indoor living environment are also gradually rising, and the use of air conditioning is becoming more and more popular. Traditional air conditioning system also exposed more and more problems and shortcomings. Therefore, solution dehumidification system based on independent control of temperature and humidity came into being. At present, many scholars have studied the application of the system in the high humidity area, but the research on the system in the dense population, urgent air conditioning demand and energy consumption in hot summer and cold winter area is relatively lacking. Based on the research of temperature and humidity independent control technology and dehumidification technology at home and abroad, this paper summarizes the shortcomings of conventional air conditioning system from the following aspects: 1. The characteristics, energy saving effect and application prospect of solution dehumidification air conditioning system based on temperature and humidity independent control technology are analyzed. On the basis of previous studies, a solution dehumidification system is designed. The physical and mathematical models of the dehumidified packed column are established by using fluent numerical simulation software, and the volume averaging method and porous media model are adopted. Six groups of randomly selected data from reference [55] were simulated, and the results were compared with experimental data. The results showed that the simulation results were basically consistent with the experimental data, and the error rate between the two groups was within 20%. It is verified that the model has a high reliability. (3) the outdoor air parameters in summer and summer in hot summer and cold winter area are analyzed, and the outdoor air parameters of 12 cities in this area are simulated by using the established model. The results show that, The dehumidification efficiency of the solution dehumidification system is about 60%, and in some areas as high as 62%, indicating that the solution dehumidification has a good application prospect in the hot summer and cold winter areas. The economy of temperature and humidity independent control solution desiccant air conditioning system and conventional air conditioning system are compared and analyzed. The results show that the initial investment of the solution dehumidification independent fresh air system is 533900 yuan more than that of the conventional air conditioning system, and the operation energy consumption is also higher than that of the conventional air conditioning system. The total energy consumption of the solution dehumidification independent fresh air system is 57321.6kW less than that of the conventional air conditioning system, and the energy consumption is 16.433.If the natural cold source is used in the treatment of the temperature side, the annual operating cost can be reduced by 93796.8 yuan, and only 2.5 years can be required to recover the funds. It is further proved that the solution dehumidification independent fresh air system has good application effect in hot summer and cold winter area. In hot summer and cold winter, the climate is hot in summer and cold in winter, which involves many provinces and cities and is densely populated. As a result of global warming, the number of days when the summer temperature exceeds 30 鈩，

本文编号：1915212