【摘要】：天然氣是現(xiàn)今世界越來越重要的能源,隨著石油危機的不斷加深,天然氣作為一種比較清潔且儲量豐富的能源,其發(fā)展不斷加快,各項研究也不斷出現(xiàn)新的成果�，F(xiàn)階段主要的研究內(nèi)容有兩方面,一方面是對低溫換熱器的研究,使基礎的工業(yè)能夠始終適應技術(shù)層面的發(fā)展要求;另一方面就是LNG冷能利用的研究,LNG的冷量是十分巨大且品位很高的,對其充分的利用不僅是能源節(jié)約的要求,更是各種產(chǎn)業(yè)相結(jié)合的一個契機。我國的天然氣研究在各方面都尚處于起步階段,雖然前景十分遠大,但需要解決的問題還有很多,特別是在基礎研究方面有很大的空缺亟待填補。本文對低溫LNG換熱器和LNG換熱網(wǎng)絡進行了研究,主要的內(nèi)容包括:(1)對繞管式換熱器的結(jié)構(gòu)進行了深入了解,其在國內(nèi)和國外應用的大概情況也做了相應的調(diào)查,并對整體設計計算方法進行了闡述.(2)提出一種計算換熱面積的簡捷計算方法,并與某實際應用實例進行對比,結(jié)論顯示此計算方法在工程的范圍內(nèi),在適當條件下是比較適用的。(3)對換熱網(wǎng)絡的基本概念進行說明,并羅列出幾種主要的設計方法,找出目前相對比較準確的方法也就是夾點分析法。(4)對LNG船舶的冷能利用換熱網(wǎng)絡進行設計計算,并比較兩種可能的換熱網(wǎng)絡,最終選出相對最優(yōu)的結(jié)果,對夾點溫度和總費用之間的關(guān)系進行討論,得出允許范圍內(nèi)夾點溫度越低,投資越少的結(jié)論。本文所提出的換熱器面積簡介計算方法和對換熱網(wǎng)絡的優(yōu)劣分析對換熱網(wǎng)絡設計和優(yōu)化的研究具有一定的促進作用和參考價值。
[Abstract]:Natural gas is an increasingly important energy in the world. With the deepening of the oil crisis, natural gas as a relatively clean and rich energy, its development is accelerating, and new research results have been emerging. At this stage, the main research content has two aspects: on the one hand, the research on low temperature heat exchanger, so that the basic industry can always adapt to the technical level of development requirements; On the other hand, the cold energy utilization of LNG is studied. The cooling capacity of LNG is very large and its grade is very high. The full utilization of LNG is not only the requirement of energy saving, but also a chance to combine all kinds of industries. Natural gas research in China is still in its infancy, although the prospect is very broad, but there are still many problems to be solved, especially in basic research there is a great gap to be filled. In this paper, the low temperature LNG heat exchanger and the LNG heat exchanger network are studied. The main contents are as follows: (1) the structure of the tube wound heat exchanger is deeply understood, and the general situation of its application at home and abroad is also investigated. The whole design calculation method is expounded. (2) A simple calculation method for calculating heat transfer area is put forward and compared with a practical application. The conclusion shows that the calculation method is within the scope of engineering. It is more applicable under appropriate conditions. (3) explain the basic concept of heat transfer network and list several main design methods. Find out that the relatively accurate method is pinch analysis. (4) the cold energy of LNG ships is designed and calculated by using heat transfer network, and two possible heat transfer networks are compared, and the relative optimal results are finally selected. The relationship between the pinch temperature and the total cost is discussed, and the conclusion is drawn that the lower the pinch temperature is, the less the investment is. The calculation method of heat exchanger area presented in this paper and the analysis of the advantages and disadvantages of the heat exchanger network are helpful for the study of the design and optimization of the heat exchanger network.
【學位授予單位】：華中科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TK172

【參考文獻】

相關(guān)期刊論文 前10條

1 吳金星;李亞飛;張燦燦;王力;許克;;繞管式換熱器的結(jié)構(gòu)形式分析及應用前景[J];壓力容器;2014年02期

2 陳永東;陳學東;;我國大型換熱器的技術(shù)進展[J];機械工程學報;2013年10期

3 浦暉;陳杰;;繞管式換熱器在大型天然氣液化裝置中的應用及國產(chǎn)化技術(shù)分析[J];制冷技術(shù);2011年03期

4 賈金才;;幾何參數(shù)對繞管式換熱器傳熱特性影響的數(shù)值研究[J];流體機械;2011年08期

5 顧安忠;;迎向“十二五”中國LNG的新發(fā)展[J];天然氣工業(yè);2011年06期

6 王艷;;低碳經(jīng)濟下的液化天然氣船舶市場[J];中國航海;2010年03期

7 朱玉琴;周丹黎;;利用夾點技術(shù)分析優(yōu)化換熱網(wǎng)絡[J];西安石油大學學報(自然科學版);2008年06期

8 余黎明;江克忠;張磊;;我國液化天然氣冷能利用技術(shù)綜述[J];化學工業(yè);2008年03期

9 王艷;;世界液化天然氣船舶市場研究分析[J];中國航海;2007年02期

10 徐文東;高麗榮;華賁;王小伍;;液化天然氣冷能梯級集成利用技術(shù)研究[J];現(xiàn)代化工;2007年04期

相關(guān)碩士學位論文 前4條

1 羅惠芳;液化天然氣冷能利用的研究[D];華中科技大學;2011年

2 王竹筠;液化天然氣（LNG）冷能回收及應用研究[D];大慶石油學院;2010年

3 位雅莉;天然氣液化工藝模擬與分析[D];西南石油學院;2004年

4 安彭軍;天然氣液化流程模擬與優(yōu)化的研究[D];蘭州理工大學;2003年

，

本文編號：2276818