管殼式換熱器的設(shè)計(jì) 畢業(yè)設(shè)計(jì)-全文預(yù)覽
【正文】 t exchanger. The design and analysis of Tubular heat exchanger consists of thermal design, flow design, structural design and strength design. Thermal design is the most important. Through this design we know design content of tube exchanger mainly consists of determining design program according to heat task and relevant requirements, determining the structure and size of heat exchanger, accounting heat transfer area and fluid resistance of the heat exchanger, determining process structure of heat exchanger. Key words: Utube Heat Exchanger, Process Design Thesis: Engineering design 目錄 I 目錄 1 緒論 ............................................................................................................................................. 1 2 工藝條件的選擇 ......................................................................................................................... 2 管殼式 換熱器類型的選擇 .................................................................................................... 2 流體流徑管程和殼程的選擇 ................................................................................................ 3 流體流速的選擇 .................................................................................................................... 3 加熱劑和冷卻劑的選擇 ........................................................................................................ 3 適宜出口溫度的選擇 ............................................................................................................ 4 設(shè)備材質(zhì)與規(guī)格的選擇 ........................................................................................................ 4 3 管 殼 式換熱器的化工計(jì)算 ......................................................................................................... 5 確定物性數(shù)據(jù) ........................................................................................................................ 5 估算傳熱面積 ........................................................................................................................ 5 熱流量 ............................................................................................................................ 5 平均傳熱溫差 ................................................................................................................. 5 冷卻 介質(zhì)的 用量 ............................................................................................................. 6 初算傳熱面積 ................................................................................................................. 6 工藝結(jié)構(gòu)計(jì)算及其他主要附件說明 .................................................................................... 6 管徑和管內(nèi)流速 ............................................................................................................. 6 管程數(shù)和傳熱管數(shù) ......................................................................................................... 7 平均傳熱溫差校正及殼程數(shù) ......................................................................................... 7 傳熱管排列和分程方法 ................................................................................................. 8 管殼內(nèi)徑 ......................................................................................................................... 8 折流板 ............................................................................................................................. 9 接管 ................................................................................................................................. 9 其他主要附件 ............................................................................................................... 10 4 管殼式 換熱器的核算 ............................................................................................................ ...12 熱量核算 .............................................................................................................................. 12 熱量核算 ....................................................................................................................... 12 管程對流傳熱系數(shù) ....................................................................................................... 13 傳熱系數(shù) K ....................................
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