绝热型溶液除湿器性能的实验研究
发布时间：2019-05-19 23:47
【摘要】：传统空调通常采用冷凝除湿方式对空气进行热湿处理,这种热湿联合空气处理方式存在着高能耗、热湿处理过程不匹配以及对室内空气品质的负面影响等问题。温湿独立控制空调系统的提出可有效解决上述问题,因此除湿方式的选择成为关键。在空调工程应用中,相比于传统冷凝除湿以及固体吸附除湿,溶液除湿方式有着独特的发展优势。因此对填料塔形式的绝热型溶液除湿装置的研究具有重要意义。绝热型溶液除湿器以填料为溶液流动载体,被处理空气流过填料内部的气相通道与溶液进行传热传质,从而达到空气除湿的目的。则除湿器内液相分布的均匀程度与填料的性能是影响除湿器除湿性能的关键因素。在除湿器内液相分布的均匀程度研究方面,本文对比分析各类布液器的初始液相分布性能,得出盘式布液器在各喷淋点上的流量分布均匀性最优,而在相同喷淋孔数下喷洒式布液器喷淋点的空间分布密度大。为确定两种布液器应用于除湿器内液相分布均匀性的差异,根据波纹填料结构规整的特点并参考灌溉学的喷淋分布均匀性评价方法,提出通过测试除湿填料出口截面上液相分布的克里斯琴森均匀系数来表征除湿器内液相分布均匀程度。搭建液相分布均匀性实验台,设计并使用盘式布液器与喷洒式布液器进行液相分布均匀性实验。对比实验结果得出,使用盘式布液器时,波纹填料绝热型溶液除湿器内的液相分布更均匀。在除湿填料性能研究方面,本文选择传统波纹填料与夹片式波纹填料作为目标填料进行溶液除湿器性能实验研究。首先对绝热型溶液除湿器内的热质传递过程的基本原理进行分析,并根据填料塔设计原理初步探讨了绝热型溶液除湿器的设计计算。搭建绝热型溶液除湿器实验台,在相同工况下,分别使用同体积的两种填料进行除湿性能实验。在本文实验条件下结果表明:使用夹片式波纹填料的除湿器除湿性能要优于使用传统波纹填料。相比传统波纹填料,使用夹片式波纹填料时除湿器的除湿量提高约14%,除湿效率提高约8%。
[Abstract]:The traditional air conditioning usually uses condensation and dehumidification to treat the air with heat and humidity. This kind of heat and humidity combined air treatment has many problems, such as high energy consumption, mismatch of heat and humidity treatment process and negative influence on indoor air quality. The proposal of temperature and humidity independent control air conditioning system can effectively solve the above problems, so the choice of dehumidification mode becomes the key. In the application of air conditioning engineering, compared with the traditional condensation dehumidification and solid adsorption dehumidification, solution dehumidification has unique development advantages. Therefore, it is of great significance to study the endothermic solution dehumidification device in the form of packed tower. The endothermic solution dehumidifier uses the packing as the solution flow carrier, and the treated air flows through the gas phase channel and the solution in the packing for heat and mass transfer, so as to achieve the purpose of air dehumidification. The uniformity of liquid phase distribution in dehumidifier and the performance of packing are the key factors affecting the dehumidification performance of dehumidifier. In the study of the uniformity of liquid phase distribution in dehumidifier, the initial liquid phase distribution performance of all kinds of liquid distributor is compared and analyzed, and it is concluded that the uniformity of flow distribution of disc liquid distributor at each spray point is the best. However, the spatial distribution density of spray point of spray distributor is large under the same number of spray holes. In order to determine the difference of liquid phase distribution uniformity between the two kinds of liquid distributor in dehumidifier, according to the structural regularity of corrugated packing and referring to the evaluation method of spray distribution uniformity of irrigation science, It is proposed to characterize the uniformity of liquid phase distribution in dehumidifier by measuring the Christiansen uniformity coefficient of liquid phase distribution on the outlet section of dehumidification packing. The experimental platform of liquid phase distribution uniformity is built, and the disk liquid distributor and spray liquid distributor are designed and used to carry out the experiment of liquid phase distribution uniformity. The experimental results show that the liquid phase distribution in the thermal solution dehumidifier with corrugated packing is more uniform when the disk liquid distributor is used. In the aspect of dehumidification packing performance, the performance of solution dehumidifier was studied by using traditional corrugated packing and clamped corrugated packing as target fillers. Firstly, the basic principle of heat and mass transfer process in insulation solution dehumidifier is analyzed, and the design calculation of insulation solution dehumidifier is discussed according to the design principle of packed tower. The experimental platform of insulation solution dehumidifier was built, and the dehumidification performance of two kinds of fillers of the same volume was carried out under the same working conditions. Under the experimental conditions, the results show that the dehumidification performance of the dehumidifier with clamped corrugated packing is better than that with traditional wavy packing. Compared with the traditional corrugated packing, the dehumidification rate and dehumidification efficiency of the dehumidifier are increased by about 14% and 8%, respectively.
【学位授予单位】：广州大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU834.9
本文编号：2481168
[Abstract]:The traditional air conditioning usually uses condensation and dehumidification to treat the air with heat and humidity. This kind of heat and humidity combined air treatment has many problems, such as high energy consumption, mismatch of heat and humidity treatment process and negative influence on indoor air quality. The proposal of temperature and humidity independent control air conditioning system can effectively solve the above problems, so the choice of dehumidification mode becomes the key. In the application of air conditioning engineering, compared with the traditional condensation dehumidification and solid adsorption dehumidification, solution dehumidification has unique development advantages. Therefore, it is of great significance to study the endothermic solution dehumidification device in the form of packed tower. The endothermic solution dehumidifier uses the packing as the solution flow carrier, and the treated air flows through the gas phase channel and the solution in the packing for heat and mass transfer, so as to achieve the purpose of air dehumidification. The uniformity of liquid phase distribution in dehumidifier and the performance of packing are the key factors affecting the dehumidification performance of dehumidifier. In the study of the uniformity of liquid phase distribution in dehumidifier, the initial liquid phase distribution performance of all kinds of liquid distributor is compared and analyzed, and it is concluded that the uniformity of flow distribution of disc liquid distributor at each spray point is the best. However, the spatial distribution density of spray point of spray distributor is large under the same number of spray holes. In order to determine the difference of liquid phase distribution uniformity between the two kinds of liquid distributor in dehumidifier, according to the structural regularity of corrugated packing and referring to the evaluation method of spray distribution uniformity of irrigation science, It is proposed to characterize the uniformity of liquid phase distribution in dehumidifier by measuring the Christiansen uniformity coefficient of liquid phase distribution on the outlet section of dehumidification packing. The experimental platform of liquid phase distribution uniformity is built, and the disk liquid distributor and spray liquid distributor are designed and used to carry out the experiment of liquid phase distribution uniformity. The experimental results show that the liquid phase distribution in the thermal solution dehumidifier with corrugated packing is more uniform when the disk liquid distributor is used. In the aspect of dehumidification packing performance, the performance of solution dehumidifier was studied by using traditional corrugated packing and clamped corrugated packing as target fillers. Firstly, the basic principle of heat and mass transfer process in insulation solution dehumidifier is analyzed, and the design calculation of insulation solution dehumidifier is discussed according to the design principle of packed tower. The experimental platform of insulation solution dehumidifier was built, and the dehumidification performance of two kinds of fillers of the same volume was carried out under the same working conditions. Under the experimental conditions, the results show that the dehumidification performance of the dehumidifier with clamped corrugated packing is better than that with traditional wavy packing. Compared with the traditional corrugated packing, the dehumidification rate and dehumidification efficiency of the dehumidifier are increased by about 14% and 8%, respectively.
【学位授予单位】：广州大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU834.9
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