【摘要】：傳統(tǒng)空調(diào)通常采用冷凝除濕方式對空氣進行熱濕處理,這種熱濕聯(lián)合空氣處理方式存在著高能耗、熱濕處理過程不匹配以及對室內(nèi)空氣品質(zhì)的負面影響等問題。溫濕獨立控制空調(diào)系統(tǒng)的提出可有效解決上述問題,因此除濕方式的選擇成為關(guān)鍵。在空調(diào)工程應(yīng)用中,相比于傳統(tǒng)冷凝除濕以及固體吸附除濕,溶液除濕方式有著獨特的發(fā)展優(yōu)勢。因此對填料塔形式的絕熱型溶液除濕裝置的研究具有重要意義。絕熱型溶液除濕器以填料為溶液流動載體,被處理空氣流過填料內(nèi)部的氣相通道與溶液進行傳熱傳質(zhì),從而達到空氣除濕的目的。則除濕器內(nèi)液相分布的均勻程度與填料的性能是影響除濕器除濕性能的關(guān)鍵因素。在除濕器內(nèi)液相分布的均勻程度研究方面,本文對比分析各類布液器的初始液相分布性能,得出盤式布液器在各噴淋點上的流量分布均勻性最優(yōu),而在相同噴淋孔數(shù)下噴灑式布液器噴淋點的空間分布密度大。為確定兩種布液器應(yīng)用于除濕器內(nèi)液相分布均勻性的差異,根據(jù)波紋填料結(jié)構(gòu)規(guī)整的特點并參考灌溉學(xué)的噴淋分布均勻性評價方法,提出通過測試除濕填料出口截面上液相分布的克里斯琴森均勻系數(shù)來表征除濕器內(nèi)液相分布均勻程度。搭建液相分布均勻性實驗臺,設(shè)計并使用盤式布液器與噴灑式布液器進行液相分布均勻性實驗。對比實驗結(jié)果得出,使用盤式布液器時,波紋填料絕熱型溶液除濕器內(nèi)的液相分布更均勻。在除濕填料性能研究方面,本文選擇傳統(tǒng)波紋填料與夾片式波紋填料作為目標填料進行溶液除濕器性能實驗研究。首先對絕熱型溶液除濕器內(nèi)的熱質(zhì)傳遞過程的基本原理進行分析,并根據(jù)填料塔設(shè)計原理初步探討了絕熱型溶液除濕器的設(shè)計計算。搭建絕熱型溶液除濕器實驗臺,在相同工況下,分別使用同體積的兩種填料進行除濕性能實驗。在本文實驗條件下結(jié)果表明:使用夾片式波紋填料的除濕器除濕性能要優(yōu)于使用傳統(tǒng)波紋填料。相比傳統(tǒng)波紋填料,使用夾片式波紋填料時除濕器的除濕量提高約14%,除濕效率提高約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.
【學(xué)位授予單位】：廣州大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TU834.9

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