本文關(guān)鍵詞：太陽能增濕除濕海水淡化系統(tǒng)性能研究　出處：《大連理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 太陽能集熱器 增濕除濕 海水淡化 造水此 回收率

【摘要】：海水淡化技術(shù)是近年來解決全球淡水危機(jī)的主要方法之一。傳統(tǒng)大型海水淡化技術(shù)不能切實(shí)解決邊遠(yuǎn)、區(qū)域分散地區(qū)的淡水緊缺問題,且離不開化石燃料的使用,使其對(duì)燃料、電等價(jià)格敏感的同時(shí)也對(duì)環(huán)境造成污染。增濕除濕(HDH)海水淡化技術(shù)簡單、適用于小型分散化裝置,其裝置運(yùn)行穩(wěn)健、維護(hù)費(fèi)用低、能應(yīng)用于高鹽度海水,是非常有前景的小型化海水淡化技術(shù)之一。本文以太陽能增濕除濕海水淡化系統(tǒng)作為研究對(duì)象,介紹了增濕除濕海水淡化技術(shù)的原理及分類,總結(jié)了國內(nèi)外太陽能增濕除濕海水淡化技術(shù)的研究進(jìn)展及現(xiàn)狀。在此基礎(chǔ)上,根據(jù)質(zhì)量及能量平衡,建立了太陽能增濕除濕海水淡化系統(tǒng)的物理、數(shù)學(xué)模型,其中包括太陽能集熱器系統(tǒng)、儲(chǔ)熱油箱系統(tǒng)、增濕除濕系統(tǒng)及換熱器系統(tǒng)四個(gè)子系統(tǒng)的數(shù)學(xué)模型,并用MATLAB語言對(duì)系統(tǒng)數(shù)學(xué)模型進(jìn)行編程及求解。本文以大連地區(qū)9月15日和12月10日的太陽能輻射條件為例,詳細(xì)分析了一至三效系統(tǒng)的運(yùn)行工況。通過分析系統(tǒng)運(yùn)行參數(shù)的變化可知,系統(tǒng)運(yùn)行時(shí)可以通過調(diào)節(jié)增濕器入口海水質(zhì)量流量、入口空氣質(zhì)量流量來控制增濕器入口海水溫度、入口空氣溫度在恒定值,使得系統(tǒng)實(shí)現(xiàn)運(yùn)行。本文分析對(duì)比了9月15日一至三效增濕除濕海水淡化系統(tǒng)的熱力性能。二效系統(tǒng)的造水比、日單位集熱面積產(chǎn)水量較高,單位產(chǎn)水量換熱面積最小,系統(tǒng)回收率最高,相對(duì)一效、三效系統(tǒng),兩效系統(tǒng)性能較優(yōu)。研究了兩效系統(tǒng)中各效增濕器入口海水溫度、入口空氣溫度、集熱器面積等因素對(duì)系統(tǒng)性能的影響。在本文計(jì)算條件下,增濕器入口海水溫度升高系統(tǒng)造水比、日單位集熱面積產(chǎn)水量先升高后降低,系統(tǒng)回收率升高；一效增濕器入口空氣溫度升高系統(tǒng)造水比、日單位集熱面積產(chǎn)水量升高,系統(tǒng)回收率降低；二效增濕器入口空氣溫度升高系統(tǒng)造水比、日單位集熱面積產(chǎn)水量降低,系統(tǒng)回收率降低；系統(tǒng)集熱器面積增大系統(tǒng)造水比、日單位集熱面積產(chǎn)水量增大,系統(tǒng)回收率升高。增濕器入口海水溫度與入口空氣溫度有一個(gè)最佳匹配值,使得系統(tǒng)造水比、系統(tǒng)日單位集熱面積產(chǎn)水量達(dá)到最大,且當(dāng)增濕器入口空氣溫度越高時(shí),與其匹配的最佳增濕器入口海水溫度也越高。在本文計(jì)算條件下,兩效系統(tǒng)造水比最大值達(dá)到3.3,日單位集熱面積最大值達(dá)到7.86kg/m2/d;系統(tǒng)造水比變化受增濕器入口海水溫度、入口空氣溫度變化影響較大,受集熱器面積變化影響較�。幌到y(tǒng)日單位集熱面積產(chǎn)水量受增濕器入口海水溫度變化影響最大,受集熱器面積變化影響最��；系統(tǒng)回收率受增濕器入口海水溫度變化影響最大,受集熱器面積變化影響最小。本文所研究的兩效系統(tǒng)在最佳運(yùn)行狀態(tài)時(shí),系統(tǒng)日單位集熱面積產(chǎn)水量較高,且造水比較其他文獻(xiàn)給出的最高結(jié)果高6.5%,具有一定的優(yōu)越性。
[Abstract]:Seawater desalination technology is one of the main methods to solve the global water crisis in recent years. The traditional seawater desalination technology can effectively solve the remote and scattered areas of fresh water shortage area, and cannot do without the use of fossil fuels, the fuels, electricity price sensitive at the same time also cause pollution to the environment (humidification dehumidification. HDH) seawater desalination technology is simple, suitable for small decentralized device, the device runs steady, low maintenance cost, can be used in high salinity seawater, seawater is small very promising. The solar desalination technology of humidification dehumidification desalination system as the research object, introduces the principle and classification of humidification dehumidification desalination technology, summarizes the domestic and foreign solar humidification dehumidification desalination technology research progress and status quo. On this basis, according to the quality and energy balance, established solar humidification dehumidification Seawater desalination system physics, mathematical model, including the solar collector system, heat storage tank system, the mathematical model of humidification dehumidification system and heat exchanger system of four subsystems, and the mathematic model of the system is programmed and solved by MATLAB language. Based on the solar radiation conditions in September 15th and December 10th for the Dalian region an example, a detailed analysis of the operation condition of the one to three efficiency system. Through the analysis of changes of system parameters, system can adjust the water mass flow entrance entrance humidifier, air mass flow control humidifier entrance water temperature, entrance air temperature at a constant value, which makes the system achieve operation. This paper analyzed and compared the September 15th one to three effectively increases the thermal performance of wet dehumidification desalination system. Togor two efficiency system, unit collector area of high water production, water production unit heat exchanger The smallest system, the highest recovery rate, relative effect, three effect, two effect system performance is better. Two effect in the effect of seawater temperature on the humidifier entrance entrance, air temperature, collector area and other factors on the performance of the system. In this paper the calculation conditions, humidifier entrance water temperature increase system togor, unit collector area of water production increased first and then decreased, the recovery rate of the system increased; a humidifier air temperature system entrance effect togor, unit collector area of water production increased, the system recovery rate decreased; two. Humidifier entrance air temperature system togor, Japan the unit collector area of water production decreased, system recovery and reduce system; collector area increase system togor, unit collector area of water production increases, the recovery rate increased. The humidifier system entrance seawater temperature and the air temperature has an entrance The best matching value, which makes the system togor, system unit collector area of water production reached the maximum, and when the humidifier air entrance temperature is high, the best temperature humidifier matched entrance seawater is also higher. In this paper calculation conditions, two efficiency system togor reached maximum value 3.3, unit heat collection the area reached the maximum value of 7.86kg/m2/d system; togor changes by seawater temperature affect the humidifier entrance, entrance air temperature change, the smaller effect of heat exchanger area change; system unit collector area of water by sea water temperature changes affect the humidifier entrance, the change in the heat exchanger area affect the minimum recovery rate by the system; humidifier entrance water temperature variation affected by changes in heat exchanger area. This paper studies the influence of minimum two efficiency system in the best running state, the system unit collector area of water production Compared with other literature, the highest result of water making is 6.5%, which has some advantages.

【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P747

【參考文獻(xiàn)】

相關(guān)期刊論文 前3條

1 冷駿,王偉勇;船用海水淡化裝置及其現(xiàn)狀分析[J];機(jī)電設(shè)備;2004年05期

2 陳明玉;袁建軍;;膜蒸餾海水淡化研究進(jìn)展及發(fā)展趨勢[J];天津化工;2007年03期

3 劉忠;曾勝;程濤濤;金濤;;多效鼓泡蒸發(fā)太陽能海水淡化系統(tǒng)的穩(wěn)態(tài)實(shí)驗(yàn)研究[J];太陽能學(xué)報(bào);2012年03期

相關(guān)碩士學(xué)位論文 前1條

1 顧明;平板集熱的太陽能海水淡化系統(tǒng)性能研究[D];大連理工大學(xué);2014年

，

本文編號(hào)：1379288