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分類號 單位代碼 11395 密 級 學(xué) 號 0706210154 學(xué)生畢業(yè)設(shè)計(論文) 題 目 管殼式換熱器的設(shè)計 作 者 院 (系 ) 化學(xué)與化工學(xué)院 專 業(yè) 化學(xué)工程與工藝 指導(dǎo)教師 答辯日期 2021年 5月 21日 榆 林 學(xué) 院 畢業(yè)設(shè)計(論文) 誠信責(zé)任書 本人鄭重聲明:所呈交的畢業(yè)設(shè)計(論文),是本人在導(dǎo)師的指導(dǎo)下獨(dú)立進(jìn)行研究所取得的成果。畢業(yè)設(shè)計(論文)中凡引用他人已經(jīng)發(fā)表或未發(fā)表的成果、數(shù)據(jù)、觀點(diǎn)等,均已明確注明出處。盡我所知,除文中已經(jīng)注明引用的內(nèi)容外,本論文不包含任何其他個人或集體已經(jīng)公開發(fā)表或 撰寫過的研究 成果 。對本文的研究做出重要貢獻(xiàn)的個人和集體,均已在文中以明確方式標(biāo)明。 本人畢業(yè)設(shè)計(論文)與資料若有不實(shí),愿意承擔(dān)一切相關(guān)的法律責(zé)任。 論 文 作者簽名 : 年 月 日 摘 要 換熱設(shè)備是化工、煉油、動力、能源、冶金、食品、機(jī)械、建筑工業(yè)中普遍 應(yīng)用的典型設(shè)備。一般換熱設(shè)備在化工、煉油裝置中的建設(shè)費(fèi)用比例可達(dá) 20%50%。因此,無論從能源的利用,還是從工廠的投資來看,合理地選擇和設(shè)計換熱器,都具有重要的意義。在各種換熱器中,由于管殼式換熱器具有單位體積內(nèi)能夠提供較大的傳熱面積、傳熱效果好、適應(yīng)性強(qiáng)、操作彈性大、易 制造、成本低、易于檢修和清洗等優(yōu)點(diǎn),因此應(yīng)用最為廣泛。 本次設(shè)計的目的是通過對設(shè)備的設(shè)計 初步掌握其設(shè)計的基本方法與程序。本次設(shè)計的設(shè)備是 U型管式換熱器, 它屬于管殼式 換熱器的一種 。管殼式 換熱器的設(shè)計和分析包括熱力設(shè)計、流動設(shè)計、結(jié)構(gòu)設(shè)計以及強(qiáng)度設(shè)計,以熱力設(shè)計最為重要。 通過本次設(shè)計知道了 管 殼 式換熱器的設(shè)計內(nèi)容主要包括根據(jù)換熱任務(wù)和有關(guān)要求確定設(shè)計方案,初步確定換熱器的結(jié)構(gòu)和尺寸,核算換熱器的傳熱面積和流體阻力,確定換熱器的工藝結(jié)構(gòu)。 關(guān)鍵詞 : U型管式換熱器 、 工藝設(shè)計 論文類型 : 工程 設(shè)計 ABSTRACT Heat transmission equipment is a typical equipment , which is widely used in chemical industry, oil refining, power, energy, metallurgy, food, machinery and building industry . The construction cost ratio of general heat transmission equipment in the chemical industry and oil refining installations can reach 20% to 50%.Therefore, no matter from energy use, or from the factory investment perspective, a reasonable choice and design of heat exchanger have important significance. In all kinds of heat exchanger, as tubular heat exchanger can provide large heat exchanger area per unit volume, heat transfer effect is good, adaptability is strong, elasticity of operation is big, easy to manufacture, its cost is low, easy to maintenance and clean etc, so it is most widely used. The aim of this design is based on the design of equipment to master its equipment basic design method and procedure. The design of the equipment is ushaped tubular heat exchanger. It belongs to the tubular heat 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 式換熱器的化工計算 ......................................................................................................... 5 確定物性數(shù)據(jù) ........................................................................................................................ 5 估算傳熱面積 .........................................................................................................