本文選題：溶液除濕　切入點：再生器　出處：《天津商業(yè)大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著我國社會經(jīng)濟、科技水平的不斷發(fā)展和提高，人們對生活質(zhì)量和工業(yè)生產(chǎn)效率的追求也在不斷提高，尤其是近幾年霧霾天氣出現(xiàn)頻繁，環(huán)境日趨惡劣。在這種條件下，傳統(tǒng)空調(diào)已經(jīng)不能滿足人們的需求了，而且傳統(tǒng)空調(diào)系統(tǒng)造成能量的浪費。基于此一些專家提出了溫濕度獨立控制空調(diào)系統(tǒng)，實現(xiàn)溫濕度獨立控制的方法之一是利用溶液除濕。溶液除濕空調(diào)系統(tǒng)不必將空氣冷凍到露點溫度以下，可在較高溫度下實現(xiàn)對空氣的處理，并且鹽溶液對空氣具有殺菌、消毒的作用，提高了空氣品質(zhì)。但對處理空氣進行除濕以后，鹽溶液的濃度減小，除濕能力下降，要想能夠循環(huán)使用，必須得對鹽溶液進行再生，使其重新具有吸濕能力。鹽溶液在再生過程中可以利用高溫?zé)煔�、工業(yè)余熱、太陽能等低品位能源，減少能源消耗。 本文對溶液除濕空調(diào)系統(tǒng)中的再生器進行了理論研究。通過傳熱傳質(zhì)分析，建立了再生器的數(shù)學(xué)模型，通過理論計算，分析了進口溶液溫度、進口溶液濃度、液氣比、進口空氣溫度和含濕量等因素對進出口空氣含濕量差、出口溶液溫度以及進出口溶液濃度差的影響，繪制了影響曲線。 本文再生器采用逆流填料塔的形式，采用LiCl溶液作為再生溶液，對溶液除濕空調(diào)系統(tǒng)再生器采用正交實驗法設(shè)計了實驗方案，在再生器實驗臺上布置了測點，采集實驗數(shù)據(jù)，并對實驗數(shù)據(jù)進行了整理，用極差和方差方法分析了實驗結(jié)果，得到影響再生器單位空氣再生量、出口溶液溫度的各個因素的影響程度排列順序，得到了在本實驗所設(shè)的條件下，實驗結(jié)果最優(yōu)的運行工況；隨機選取了幾組實驗工況，模擬計算出了相應(yīng)的單位空氣再生量，，并與實驗結(jié)果進行了對比，分析了誤差可能存在的原因。 通過理論與實驗研究，得到如下結(jié)論： (1)單位空氣再生量隨著進口溶液溫度、液氣比的增加而增加；隨著溶液進口濃度以及空氣進口含濕量的增加而減��；隨著空氣進口溫度的變化較為平緩； (2)進口溶液溫度是單位空氣再生量的主要影響因素，在今后的實驗過程中要加以注意；進口空氣溫度對單位空氣再生量的影響較弱； (3)對出口溶液溫度影響最大的因素是進口溶液溫度和液氣比； (4)在本實驗條件下，單位空氣再生量最大的實驗方案組合是：進口溶液溫度是76℃，進口溶液濃度是30%，液氣比為2.5，進口空氣溫度及含濕量分別為36℃和12g/kg； (5)選取一組實驗工況，根據(jù)實驗結(jié)果計算得到單位空氣再生量為17.61g/kg，能量效率s為79.76%。
[Abstract]:With the development and improvement of our social economy and science and technology, people's pursuit of quality of life and industrial production efficiency is also increasing, especially in recent years, haze weather appears frequently and the environment is getting worse. Traditional air conditioning can no longer meet the needs of people, and the traditional air conditioning system causes energy waste. Based on this, some experts put forward the independent control of temperature and humidity air conditioning system. One of the ways to realize the independent control of temperature and humidity is to dehumidify by using solution. The air can be treated at a higher temperature by the solution desiccant air conditioning system without freezing the air below the dew point temperature, and the salt solution can sterilize the air. Disinfection improves air quality. But after dehumidifying the treated air, the concentration of the salt solution decreases, and the dehumidification capacity decreases. To be able to recycle, the salt solution must be regenerated. In the process of regeneration salt solution can utilize low-grade energy such as high temperature flue gas industrial waste heat solar energy and so on to reduce energy consumption. In this paper, the regenerator in the solution desiccant air conditioning system is studied theoretically. Through the analysis of heat and mass transfer, the mathematical model of the regenerator is established, and the temperature of the inlet solution, the concentration of the inlet solution and the ratio of liquid to gas are analyzed by theoretical calculation. The influence curves of inlet air temperature and moisture content on the difference of moisture content in inlet and outlet air, the temperature of outlet solution and the concentration difference of inlet and outlet solution are drawn. In this paper, the regenerator adopts countercurrent packing tower and LiCl solution as the regenerative solution. The experimental scheme of the regenerator of the solution desiccant air conditioning system is designed by orthogonal experiment method. The measuring points are arranged on the regenerator test table and the experimental data are collected. The experimental data are sorted out, and the experimental results are analyzed by the method of range difference and variance. The order of the influence degree of the factors affecting the regenerator unit air regeneration quantity and outlet solution temperature is obtained. The optimal operating conditions of the experimental results are obtained under the conditions of this experiment, and several groups of experimental conditions are randomly selected to simulate and calculate the corresponding unit air regeneration rate, and the results are compared with the experimental results. The possible causes of errors are analyzed. Through theoretical and experimental research, the following conclusions are obtained:. 1) the regenerative capacity of unit air increases with the temperature of the inlet solution, decreases with the increase of the inlet concentration of the solution and the moisture content of the inlet air, and with the change of the inlet temperature of the air, the change of the ratio of liquid to gas is relatively gentle. (2) the temperature of inlet solution is the main factor affecting the regeneration amount of unit air, which should be paid attention to in the future experiment, and the influence of imported air temperature on the regeneration quantity of unit air is weak. (3) the most important factors affecting the outlet solution temperature are the inlet solution temperature and the liquid-gas ratio. (4) under the experimental conditions, the maximum regeneration amount per unit air was as follows: the inlet solution temperature was 76 鈩

本文編號：1566733