發(fā)布時間：2018-05-02 19:55

  本文選題：螺旋繞管式換熱器 + 優(yōu)化設計　； 參考：《武漢工程大學》2015年碩士論文

【摘要】：螺旋繞管式換熱器是一種新式換熱器,與常用的換熱器相比優(yōu)勢明顯。它的緊湊型結(jié)構(gòu)利于換熱和防結(jié)垢。同時該換熱器能通過自身補償溫度,達到經(jīng)濟節(jié)能的要求。盡管早在上世紀初,就有人提出了相關(guān)的設計構(gòu)想,但要對其進行精確的設計計算卻很難。目前我國對這種換熱器在研究、設計及制造等方面所作的工作還比較少,在通常的換熱器手冊中也沒有敘及此類換熱器的設計原理和設計步驟,只有少量文獻提及。像其他任何一種換熱器設計一樣,在工藝設計中螺旋繞管式換熱器管程及殼程中的兩相流問題是最復雜的問題之一。在對螺旋繞管式換熱器進行設計計算時,一方面采用與常規(guī)的設計方法,另一方面要結(jié)合實際的生產(chǎn)經(jīng)驗。本論文通過借助計算機C#語言編寫程序,有效地簡化了螺旋繞管式換熱器熱力設計中大量的計算。本文首先對螺旋繞管式換熱器的特點、結(jié)構(gòu)形式、工程應用和使用管理做了介紹,并對其前景做了分析。借助常規(guī)的換熱器設計方法和制造經(jīng)驗,采用了優(yōu)化的逆流分段設計方法進行設計。結(jié)合螺旋繞管式換熱器的幾何結(jié)構(gòu)對螺旋繞管式換熱器進行了熱力設計理論分析,確立了管殼程傳熱膜系數(shù)的數(shù)學模型。在熱力計算分析中,確定了計算重點為換熱器的總傳熱系數(shù)、傳熱面積及壓力損失的計算。在運用C#語言編寫程序之前,先繪制了程序運行的流程圖,再輸入相關(guān)的物性參數(shù)和公式,編寫并調(diào)試程序。程序編寫完成后,運用已知的工藝條件對程序進行了校核,并與人工計算結(jié)果進行對比,二者計算結(jié)果誤差較小,則驗證程序編寫正確,保證了程序的準確性。在運用計算機計算程序簡化計算的同時,對制造換熱器的選材進行了探討,結(jié)合不同材料的特點,對一系列材料進行了性能評價,進一步優(yōu)化了螺旋繞管式換熱器的設計。
[Abstract]:Spiral-wound tube heat exchanger is a new type of heat exchanger, which has obvious advantages over common heat exchangers. Its compact structure is conducive to heat transfer and anti-scaling. At the same time, the heat exchanger can compensate the temperature by itself to achieve the requirement of economic energy saving. Although some people put forward related design ideas as early as the beginning of last century, it is difficult to carry out accurate design calculation. At present, the research, design and manufacture of this kind of heat exchanger in our country are relatively few, and the design principle and design steps of this kind of heat exchanger are not described in the general heat exchanger manual, only a few references are mentioned. Like any other heat exchanger design, the two-phase flow problem in the tube and shell of the spiral heat exchanger is one of the most complex problems in the process design. In the design and calculation of spiral wound tube heat exchanger, on the one hand, the conventional design method should be adopted, on the other hand, the actual production experience should be combined. In this paper, a large number of calculations in the thermal design of spiral wound tube heat exchangers are simplified by programming with the help of computer C # language. In this paper, the characteristics, structure, engineering application and management of spiral wound tube heat exchanger are introduced, and its prospect is analyzed. Based on the conventional heat exchanger design method and manufacturing experience, the optimized countercurrent section design method is used to design the heat exchanger. Combined with the geometry of the spiral tube heat exchanger, the thermal design theory of the spiral wound tube heat exchanger is analyzed, and the mathematical model of the heat transfer film coefficient of the tube and shell side is established. In the thermodynamic calculation and analysis, the emphasis of calculation is the calculation of the total heat transfer coefficient, heat transfer area and pressure loss of the heat exchanger. Before using C # language to write the program, the flow chart of the program running is drawn first, then the relevant physical parameters and formulas are input, and the program is written and debugged. After the program is completed, the program is checked by using the known process conditions, and compared with the result of manual calculation. If the error between the two results is small, the program is verified to be correct and the accuracy of the program is ensured. At the same time, the selection of materials for manufacturing heat exchangers is discussed, and a series of materials are evaluated in combination with the characteristics of different materials, and the design of spiral wound heat exchangers is further optimized.
【學位授予單位】：武漢工程大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TQ051.5

【參考文獻】

相關(guān)期刊論文 前10條

1 樓文元;;纏繞管式換熱器在柴油加氫裝置的應用[J];寧波節(jié)能;2014年03期

2 翟紅生;于海鵬;;C#程序設計課程教學探討[J];福建電腦;2012年10期

3 李彥晴;陳亞平;陳偉;劉化瑾;;管殼式換熱器設計軟件開發(fā)[J];計算機工程與設計;2011年05期

4 ;Principle of equipartition of entransy dissipation for heat exchanger design[J];Science China(Technological Sciences);2010年05期

5 劉倍倍;;纏繞管式換熱器的修復[J];石油和化工設備;2009年10期

6 張賢安;;高效纏繞管式換熱器的節(jié)能分析與工業(yè)應用[J];壓力容器;2008年05期

7 梁新;李皓;劉亞莉;李曉丹;;管殼式換熱器設計軟件的開發(fā)[J];計算機與應用化學;2008年05期

8 吳兵;行秋閣;魏曉炬;王華;;管殼式換熱器選型軟件的開發(fā)[J];陜西理工學院學報(自然科學版);2007年04期

9 都躍良,張賢安;纏繞管式換熱器的管理及其應用前景分析[J];化工機械;2005年03期

10 曲平,王長英,俞裕國;纏繞管式換熱器的簡捷計算[J];大氮肥;1998年03期

，

本文編號：1835264