太阳能翅化板降膜溶液再生过程的实验研究

发布时间：2019-01-17 09:23

【摘要】：太阳能溶液除湿空调系统是一种极具发展前景的空调系统，可利用低品位热源实现溶液再生，耗电小和对环境无污染。集热型再生器把再生器和太阳能集热器集中在一起，，再生器作为太阳能溶液除湿空调系统的核心部件之一，它的效率、运行状况、结构和初投资等直接影响系统的性能及可行性。因此，人们希望设计出一种可靠、和性价比高的集热型再生器。多年来，国内外许多学者对其进行了大量的理论分析计算和实验研究。本文主要对翅化板式集热型再生器和平板式集热型再生器的再生性能进行了理论分析和实验研究，设计和搭建了具体的再生器实验台，建立了理论计算模型，选择了LiCl溶液作为再生溶液，分析了在广州地区室外天气下，空气和溶液进口温度、空气含湿量、空气和溶液进口流量、溶液浓度以及太阳能辐射强度七个参数对这两种再生器的溶液再生量和再生器效率的影响，同时比较了两种再生器的溶液再生量和再生器效率。实验和理论分析结果表明：在相同的实验工况下和再生器其它结构参数不变的情况下，翅化板式集热型再生器的溶液再生量和再生器效率均高于平板式集热型再生器，采用翅化板式集热型再生器代替平板式集热型再生器，能够提高再生器的集热性能，翅化板式集热型再生器的溶液再生量比平板式集热型再生器的溶液再生量多140g/h左右，溶液的再生量能够提高13%~22%左右，再生器效率能够提高7%左右。且这两种再生器的溶液再生量和再生器效率都有着相同的再生规律，即：溶液再生量和再生器效率随着空气进口流量和进口温度、溶液进口流量和进口温度的增加而增加，随着溶液进口浓度和空气进口含湿量的增加而减小；溶液再生量随着太阳能辐射强度的增加而增加，再生器效率随着太阳能辐射强度的增加而减小。
[Abstract]:Solar solution dehumidification air conditioning system is a kind of air conditioning system with great development prospect. It can use low grade heat source to realize solution regeneration, with little electricity consumption and no pollution to the environment. The collector brings together the regenerator and the solar collector. As one of the core components of the solar solution desiccant air conditioning system, the regenerator is efficient and operating. Structure and initial investment directly affect the performance and feasibility of the system. Therefore, people hope to design a reliable, and high cost-effective heat collector. Over the years, many scholars at home and abroad have done a lot of theoretical analysis and calculation and experimental research. In this paper, the theoretical analysis and experimental study on the regeneration performance of the wing plate type regenerator and the plate type regenerator are carried out, the concrete regenerator experimental bench is designed and built, and the theoretical calculation model is established. The LiCl solution was selected as the regenerated solution. The inlet temperature of air and solution, the moisture content of air and the flow rate of inlet air and solution were analyzed in the outdoor weather of Guangzhou area. The effects of solution concentration and solar radiation intensity on the solution regeneration quantity and regeneration efficiency of the two regenerators were studied. The solution regeneration capacity and the regenerator efficiency of the two regenerators were also compared. The results of experiment and theoretical analysis show that under the same experimental conditions and the same structural parameters of regenerator, the regenerator's solution regeneration capacity and regenerator efficiency are higher than those of flat plate type regenerator. The performance of the regenerator can be improved by using the wing plate type collector instead of the flat plate type regenerator. The amount of solution regeneration of the wing plate type regenerator is more than that of the flat plate type regenerator about 140g/h. The regeneration capacity of the solution can be increased by about 13 ~ 22%, and the efficiency of the regenerator can be increased by about 7%. Both of the two kinds of regenerators have the same regeneration law, that is, the amount of solution regeneration and the efficiency of regenerator increase with the increase of air inlet flow rate and inlet temperature, solution inlet flow rate and inlet temperature. With the increase of the inlet concentration of the solution and the moisture content of the air inlet, it decreases. The amount of solution regeneration increases with the increase of solar radiation intensity, and the efficiency of regenerator decreases with the increase of solar radiation intensity.
【学位授予单位】：广州大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TB657.2;TK51

【参考文献】