機艙熱發(fā)散控制用通風參數(shù)影響的模擬分析
發(fā)布時間:2018-01-13 09:16
本文關鍵詞:機艙熱發(fā)散控制用通風參數(shù)影響的模擬分析 出處:《艦船科學技術》2016年09期 論文類型:期刊論文
更多相關文章: 船艙通風 熱發(fā)散控制 射流送風 數(shù)值模擬試驗 通風控制因素
【摘要】:針對船舶機艙發(fā)電機組、鍋爐等高負荷熱源,研究采用空氣射流通風技術進行熱發(fā)散控制。結合機艙的現(xiàn)場條件,建立機艙熱發(fā)散控制的物理模型,選用計算流體力學的標準k-ε模型作為數(shù)值模擬計算模型。采用正交試驗法對穩(wěn)態(tài)條件下的送風速度、噴嘴高度、送風溫度、送風濕度、排風速度等因素進行了模擬試驗分析。試驗得出不同通風因素對熱發(fā)散控制效果影響的顯著性大小排序:送風溫度、送風速度、噴嘴高度、排風速度。結合試驗分析結果提出了熱發(fā)散通風控制的優(yōu)方案和考慮節(jié)能后再優(yōu)化調(diào)整方案。
[Abstract]:Aiming at the high load heat sources such as marine engine room generator and boiler, this paper studies the heat divergence control by air jet ventilation technology, and establishes the physical model of engine room heat divergence control according to the field conditions of engine room. The standard K- 蔚 model of computational fluid dynamics is chosen as the numerical simulation model. The velocity of air supply, the height of nozzle, the temperature of supply air and the humidity of supply air under steady condition are studied by orthogonal test method. The influence of different ventilation factors on the control effect of thermal divergence was analyzed by simulation test. The order of significance of different ventilation factors on the control effect of thermal divergence was obtained: air supply temperature, air velocity and nozzle height. Combined with the results of experimental analysis, the optimal scheme of heat divergence ventilation control and the scheme of optimization adjustment after considering energy saving are put forward.
【作者單位】: 東華大學環(huán)境學院;中國船舶重工集團公司第七0一研究所;
【分類號】:U664.86
【正文快照】: 機艙是船舶的重要組成結構[1],在空間緊湊的機艙中有鍋爐、發(fā)電機組、空氣壓縮機等熱散發(fā)設備,及排氣管系、動力管系等熱散發(fā)輔助設備。熱散發(fā)造成環(huán)境溫度升高影響到空氣壓縮機、冷水機組等設備正常運轉(zhuǎn)[2]。機艙中油液揮發(fā)到環(huán)境空氣中,當聚集到一定濃度還存在爆燃隱患。因
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1 王勇;張威;李偉光;;船用集氣罩空氣幕送風速度優(yōu)化的數(shù)值研究[J];船海工程;2014年04期
,本文編號:1418366
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