本文選題：冷卻塔 + 節(jié)水��； 參考：《昆明理工大學(xué)》2014年碩士論文

【摘要】：目前火力發(fā)電廠最大的耗水項(xiàng)目是冷卻塔的水損失,在國(guó)內(nèi)外開(kāi)展了大量關(guān)于冷卻塔節(jié)水工作的研究。首先,本文比較全面的介紹了冷卻塔節(jié)水技術(shù)在國(guó)內(nèi)外的研究現(xiàn)狀,在此基礎(chǔ)上對(duì)各種節(jié)水方案的措施進(jìn)行綜合分析,最后提出了風(fēng)吹水損失對(duì)冷卻塔的危害性,并指出選擇合適的除水器是解決這一問(wèn)題的關(guān)鍵。 本文根據(jù)逆流式自然通風(fēng)冷卻塔的性能,以傳熱傳質(zhì)為前提,得到了冷卻塔風(fēng)吹損失的計(jì)算模型以及求解程序。以某300MW機(jī)組的冷卻塔為實(shí)例,給出冷卻塔在不同工況下的參數(shù),并對(duì)比出塔水溫、風(fēng)吹損失等各參數(shù)間計(jì)算值與實(shí)測(cè)值的結(jié)果,比較其相對(duì)誤差在允許范圍內(nèi),驗(yàn)證了風(fēng)吹損失用此計(jì)算模型研究的可行性。 本文以冷卻塔的除水器為研究對(duì)象,在比較6種不同型號(hào)除水器后,利用正交實(shí)驗(yàn)設(shè)計(jì)方法,重點(diǎn)對(duì)BO-160/50型BO-145/42型和SO-180/42型3種不同型號(hào)除水器進(jìn)行比較分析,同時(shí)對(duì)其節(jié)水效益進(jìn)行比較,提出雙波除水器SO-180/42型能更加減少耗水量和有效減少風(fēng)吹損失。 分析了在塔內(nèi)安裝了SO-180/42型除水器后,對(duì)于出塔水溫和冷卻效率的影響。結(jié)果表明：冷卻塔安裝SO-180/42型雙波除水器后,由于抽力增大,使出塔水溫降低了0.18℃。但是,回收后的飄滴落在冷卻塔集水池中,與水池中的水相混合,提高了水池水溫。經(jīng)計(jì)算,落入水池中的飄滴可使池中水溫升高約0.14℃C,二者相抵,冷卻塔安裝除水器對(duì)出塔水溫沒(méi)有影響；自然通風(fēng)冷卻塔加裝雙波除水器SO-180/42型后,由于冷卻塔內(nèi)的總阻力增加較少,對(duì)冷卻塔的冷卻效果無(wú)顯著影響。
[Abstract]:At present, the biggest water consumption project of thermal power plant is the water loss of cooling tower. A lot of research on water saving of cooling tower has been carried out at home and abroad. First of all, this paper introduces the research status of cooling tower water-saving technology at home and abroad, on the basis of comprehensive analysis of various water-saving measures, finally puts forward the harm of wind blowing water loss to cooling tower. It is pointed out that the key to solve this problem is to select a suitable water remover. Based on the performance of the countercurrent natural ventilation cooling tower and on the premise of heat and mass transfer, the calculation model and the solution program of the wind blowing loss of the cooling tower are obtained in this paper. Taking the cooling tower of a 300MW unit as an example, the parameters of the cooling tower under different working conditions are given, and the calculated and measured results of the parameters such as tower water temperature and wind blowing loss are compared, and the relative errors are compared within the allowable range. The feasibility of using this model to study wind loss is verified. In this paper, the dewatering device of cooling tower is taken as the research object. After comparing six different types of water remover, the author makes a comparative analysis of three different types of water remover of BO-160/50 type BO-145/42 and SO-180/42 type by using orthogonal experimental design method. At the same time, the water saving benefit is compared, and it is proposed that the SO-180/42 type of dual wave water remover can reduce water consumption and wind blow loss more effectively. The influence of SO-180/42 type water remover on the water temperature and cooling efficiency of the tower is analyzed. The results show that the water temperature of the cooling tower is reduced by 0.18 鈩，

本文編號(hào)：1948390