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畢業(yè)設(shè)計:用水冷卻煤油產(chǎn)品的多程列管式換熱器設(shè)計-wenkub

2023-06-17 16:43:46 本頁面
 

【正文】 ............................................. 1 三、操作條件 ...................................................................................................................................... 1 四、設(shè)計內(nèi)容 ...................................................................................................................................... 1 五、設(shè)計日期 ...................................................................................................................................... 1 六、設(shè)計評述 ...................................................................................................................................... 1 第二部分 設(shè)計方案 簡介評述 ......................................................................................2 第三部分 換熱器設(shè)計理論計算 ................................................................................2 1、試算并初選換熱器規(guī)格 ............................................................................................................ 2 ( 1)、 定流體通入空間 ......................................................................................................... 2 ( 2)、確定流體的定性溫度、物性數(shù)據(jù),并選擇列管式換熱器的形式: ................ 2 (3)、計算熱負(fù)荷 Q ................................................................................................................... 3 ( 4)、計算兩流體的平均溫度差,并確定殼程數(shù) ........................................................... 3 ( 5)、初步選擇換熱器規(guī)格 ................................................................................................... 3 核算總傳熱系數(shù) K0 ..................................................................................................................... 4 ( 1)、計算管程對流傳熱系數(shù) .............................................................................................. 4 (2)、計算殼程對流傳熱系數(shù) o? ............................................................................................ 5 ( 3)、確定污垢熱阻 ................................................................................................................ 5 ( 4)、計算總傳熱系數(shù) ............................................................................................................ 6 計算壓強降 .................................................................................................................................... 6 2 ( 1)、計算管程壓強降 ............................................................................................................ 6 (2)、計算殼程壓強降 ............................................................................................................... 7 第四部分 換熱器主要結(jié)構(gòu)尺寸 ..................................................................................8 一、管子的規(guī)格和排列方法 ..
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