热泵驱动溶液除湿空调系统的研究

发布时间：2018-05-09 00:05

本文选题：热泵驱动 + 溶液除湿　；参考：《江苏科技大学》2013年硕士论文

【摘要】：日渐普及的常规制冷空调系统和设备在为人们提供良好舒适的室内人居环境的同时，却带来了新的社会问题：空调能耗巨大，能源浪费严重、对电力系统冲击大，电网安全运行受到威胁、对室内空气品质有负面影响，，舒适性下降等。热泵驱动溶液除湿空调系统就是在这一背景下提出来的，它不仅运行稳定、高效节能省电，而且有助于提升室内空气品质，为人们提供一个更加舒适、健康的生活和工作环境，是未来理想空调的一个新的发展方向。本文从除湿剂的选择标准出发，结合热泵驱动溶液除湿空调系统的自身特点，通过综合分析，得出了LiCl溶液更适合做该系统的除湿剂的结论，并对LiCl溶液的物性进行了探讨。本文对该系统的结构、工作流程、特点加以介绍，并分析了发生在除湿器和再生器中的空气和溶液之间的传热传质机理、溶液除湿/再生过程特性，指出空气中水蒸气分压力与边界层中水蒸气分压力之差是质交换的驱动力。另外，还探讨了绝热型叉流除湿器/再生器工作过程数学模型和数值求解方法、过程。本文采用该系统对我校某实验办公室进行了实验系统理论设计。为了及时、有效地排除系统中多余的冷凝热，采用了在制冷系统管路上串联一个风冷冷凝器的方法来改进系统，其理论能效比EER可达3.69，比常规风冷机组制冷系统省电12.5%。最后，本文采用改变单一变量的实验方法，对改进后的系统整体性能进行了实验研究，主要研究了风量、新风温度、新风含湿量、冷凝温度、再生溶液流量、除湿溶液流量对系统除湿量、再生量、供冷量及机组能耗的影响，为热泵驱动溶液除湿空调系统的性能优化提供了一定的数据参考。
[Abstract]:With the increasing popularity of conventional refrigeration and air conditioning systems and equipment, while providing people with a good and comfortable indoor living environment, it has brought about new social problems: air conditioning energy consumption is huge, energy waste is serious, and the impact on the power system is great. The safe operation of power grid is threatened, which has negative influence on indoor air quality and decreases comfort. Heat pump driven solution dehumidification air conditioning system is put forward under this background. It not only runs stably, but also helps to improve indoor air quality and provide people with a more comfortable and healthy living and working environment. Is the future ideal air conditioning a new development direction. Based on the selection standard of dehumidifier and the characteristics of heat pump driven solution dehumidifying air conditioning system, this paper draws the conclusion that LiCl solution is more suitable for dehumidifying agent of this system, and discusses the physical properties of LiCl solution. In this paper, the structure, working flow and characteristics of the system are introduced, and the mechanism of heat and mass transfer between air and solution in the dehumidifier and regenerator, the characteristics of the solution dehumidification / regeneration process are analyzed. It is pointed out that the difference between the partial pressure of water vapor in air and the partial pressure of water vapor in boundary layer is the driving force of mass exchange. In addition, the mathematical model of adiabatic cross flow dehumidifier / regenerator working process and the numerical solution method are also discussed. In this paper, the experimental system is designed for a laboratory office in our university. In order to eliminate the superfluous condensation heat in time and effectively, a series of air-cooled condenser was adopted to improve the system. The theoretical energy efficiency ratio (EER) of the condenser was 3.69, and the power saving was 12.5% compared with the conventional air-cooled unit refrigeration system. Finally, an experimental study on the whole performance of the improved system is carried out by using the method of changing the single variable. The air volume, the temperature of the fresh air, the moisture content of the fresh air, the condensation temperature and the flow rate of the regenerated solution are studied. The effect of dehumidification solution flow rate on the dehumidification, regeneration, cooling capacity and energy consumption of the unit provides a certain data reference for the performance optimization of the heat pump driven solution desiccant air conditioning system.
【学位授予单位】：江苏科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU831.3

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