發(fā)布時間：2018-04-09 19:54

  本文選題：高壓噴氣　切入點：填料　出處：《西安工程大學(xué)》2013年碩士論文

【摘要】：隨著紡織工藝的不斷改革發(fā)展，如何降低紡織空調(diào)能耗，提高能源的利用率是紡織企業(yè)特別關(guān)注的問題。而對于紡織車間空調(diào)區(qū)的主要特點是：以機器散發(fā)的顯熱為主，與舒適性空調(diào)的最大區(qū)別是車間紡織工藝對濕度場的要求精度比較高。車間紡織機器幾乎全年連續(xù)運行，因此在冬季的不僅需要對車間加濕而且還要對其降溫。紡織廠經(jīng)常采用的噴水室、噴霧風(fēng)機和高壓噴霧，一般需另設(shè)冷凍站或開采深井水作為空調(diào)的水源，導(dǎo)致了占地面積大，初投資高，耗水量大，能耗高等缺點。為了解決這些問題，提出將紡織廠通用壓縮空氣與直接蒸發(fā)冷卻相結(jié)合處理室外新風(fēng)的空調(diào)機組。我校與西安井上人工環(huán)境有限公司合作設(shè)計制作了這種能夠循環(huán)利用能源，且具有節(jié)能、環(huán)保、經(jīng)濟、健康的高壓噴氣—填料蒸發(fā)冷卻空調(diào)機組，并實際應(yīng)用到了紡織廠空壓站中，不僅對該機組進行了可行性分析，還對該機組在實際工程中進行了測試研究。 首先結(jié)合理論分析對該空調(diào)機組進行可行性分析，并從其結(jié)構(gòu)特征、工作原理及空氣處理過程進行了分析。在實用新型專利高壓噴氣—填料式直接蒸發(fā)冷卻器復(fù)合型蒸發(fā)冷卻空調(diào)機組上，對設(shè)計風(fēng)量是5000m3/h空調(diào)機組采用高壓節(jié)氣噴嘴的高壓噴氣段、填料段進行結(jié)構(gòu)上設(shè)計及設(shè)備選型。 然后對應(yīng)用于紡織廠空壓站的設(shè)計風(fēng)量是5000m3/h的實驗樣機進行測試。分別采用單獨開啟填料直接蒸發(fā)冷卻段與同時開啟高壓噴氣段和填料直接蒸發(fā)冷卻段的兩種模式進行對比測試。其中高壓噴氣段的噴射方式分為：順噴，側(cè)噴，逆噴。測試結(jié)果表明：（1）高壓噴氣段使得室外新風(fēng)的干球溫度平均降低0.89℃，濕球溫度平均降低1.12℃，含濕量平均降低1.56g/kg，得出壓縮空氣是一種氣體吸濕劑。（2）開啟高壓噴氣段后可以使得直接蒸發(fā)冷卻段的溫降和冷卻效率都有所提升，直接蒸發(fā)冷卻段的平均溫降從4.54℃提升到5.67℃，冷卻效率從83.46%提高到93.68%。（3）高壓噴氣在三種不同的噴射方式中，逆噴與填料直接蒸發(fā)冷卻相結(jié)合時，冷卻效果好于順噴和側(cè)噴。根據(jù)該空調(diào)機組自身的特點，，對其適用場合提出些許意見。 最后以紡織廠織布車間為計算依據(jù)，分析該機組相比于傳統(tǒng)噴水室的節(jié)能潛力。分別對傳統(tǒng)噴水室、高壓噴氣—填料蒸發(fā)冷卻空調(diào)系統(tǒng)進行制冷量、能耗、能效比EER的計算，然后進行對比分析。經(jīng)計算知，傳統(tǒng)噴水室的制冷量僅是高壓噴氣—直接蒸發(fā)冷卻空調(diào)制冷量的31.6%。且高壓噴氣—直接蒸發(fā)冷卻空調(diào)的能效比是2.67，傳統(tǒng)噴水室的能效比是2.07�？梢姡诩徔棌S采用高壓噴氣—直接蒸發(fā)冷卻空調(diào)較傳統(tǒng)噴水室較經(jīng)濟。
[Abstract]:With the continuous reform and development of textile technology, how to reduce energy consumption of textile air conditioning and improve energy utilization rate is a special concern of textile enterprises.The main characteristic of the air conditioning area of textile workshop is that the heat emitted by the machine is the main factor, and the biggest difference from the comfortable air conditioning is that the precision of the humidity field of the textile process in the workshop is relatively high.Workshop textile machines run continuously throughout the year, so it is necessary not only to humidify the workshop in winter, but also to cool it down.The water spray chamber, spray fan and high pressure spray often used in textile mills usually need to set up freezing station or mining deep well water as air conditioning water source, which leads to the shortcomings of large land area, high initial investment, large water consumption, high energy consumption and so on.In order to solve these problems, an air conditioning unit which combines general compressed air in textile mill with direct evaporative cooling to treat outdoor fresh air is put forward.Our school and Xi'an Jingshang artificial Environment Co., Ltd. have designed and manufactured this kind of high-pressure air-jet and packing evaporative cooling air conditioning unit with energy saving, environmental protection, economy and health.And it is applied to the air pressure station of textile mill. Not only the feasibility analysis of the unit is carried out, but also the testing research of the unit in the actual project is carried out.Firstly, the feasibility of the air conditioning unit is analyzed based on the theoretical analysis, and the structural characteristics, working principle and air treatment process are analyzed.In the utility model patent high pressure jet packing type direct evaporative cooler composite evaporative cooling air-conditioning unit the design air volume is 5000m3/h air conditioning unit using high pressure throttle nozzle high pressure jet section packing section structure design and equipment selection.Then test the experimental prototype of 5000m3/h, which is applied to the air pressure station of textile mill.The direct evaporative cooling section of packing was opened separately and the high pressure jet section and the direct evaporative cooling section of packing were opened at the same time.The injection mode of high pressure jet section can be divided into three types: side jet, side jet and reverse jet.The test results show that the dry and wet bulb temperatures of outdoor fresh air and wet bulb are reduced by 0.89 鈩

本文編號：1727901