本文選題：船舶節(jié)能 + 余熱回收�。� 參考：《大連海事大學(xué)》2017年碩士論文

【摘要】：船舶作為國際貿(mào)易中重要的交通運輸工具,在營運時消耗了大量的能源。而船舶主機(jī)燃料燃燒產(chǎn)生的能量中,約有25%隨煙氣排出,造成了大量能源的浪費。為此,船舶煙氣余熱回收技術(shù)的相關(guān)研究凸顯重要。溫差發(fā)電技術(shù)可直接將熱能轉(zhuǎn)換為電能,在提高船舶能源利用率的同時降低了碳排放,且具有結(jié)構(gòu)簡單、無污染、維護(hù)方便等特點,因而在船舶煙氣余熱回收上有廣闊的研究和應(yīng)用前景。本文基于溫差發(fā)電技術(shù)與熱管的強化傳熱性能,設(shè)計并搭建了利用熱管強化傳熱的溫差發(fā)電實驗裝置,在進(jìn)行了相關(guān)理論計算與實驗研究的基礎(chǔ)上,提出了一種熱管式船舶煙氣余熱溫差發(fā)電裝置。主要工作如下:首先,設(shè)計了熱管式船舶煙氣余熱溫差發(fā)電實驗裝置,分析了其傳熱特性,計算了實驗裝置在傳熱過程中各部分的熱導(dǎo)率,結(jié)合溫差發(fā)電系統(tǒng)的熱力學(xué)模型,對實驗裝置的輸出性能進(jìn)行了理論計算,并與實驗數(shù)據(jù)進(jìn)行對比,以驗證該裝置原理的可行性和結(jié)構(gòu)的合理性;其次,搭建了溫差發(fā)電裝置實驗臺。確定了溫差發(fā)電實驗裝置的最佳運行模式,并對其在不同工況下的性能進(jìn)行了分析。在熱源溫度分別為275℃、300℃與325℃時,溫差發(fā)電實驗裝置的最大輸出功率分別為39.42 W、47.22 W與53.25 W,熱電轉(zhuǎn)換效率分別為4.8%、5.2%與5.5%;第三,對比了在不同冷端與熱端傳熱方式下溫差發(fā)電實驗裝置的輸出性能,結(jié)果表明冷端與熱端采用熱管強化傳熱的方式可以提升溫差發(fā)電裝置的輸出性能;最后,根據(jù)"SDM"輪MAN 6S70MC主機(jī)相關(guān)參數(shù),計算其煙氣余熱量,設(shè)計了一種熱管式船舶煙氣余熱溫差發(fā)電裝置,該裝置由多個溫差發(fā)電單元構(gòu)成,每個單位裝配有384塊溫差發(fā)電片,單元數(shù)可根據(jù)船舶煙氣余熱量的大小進(jìn)行調(diào)節(jié)。在船舶煙氣溫度為325℃:時,一個溫差發(fā)電單元最大可產(chǎn)生約3.4 kW電能。
[Abstract]:As an important means of transportation in international trade, ships consume a lot of energy. About 25% of the energy generated by ship engine fuel combustion is discharged with flue gas, resulting in a large amount of energy waste. Therefore, the research of ship flue gas waste heat recovery technology is very important. Thermoelectric power generation technology can directly convert heat energy into electric energy, which can improve the energy efficiency of ships and reduce carbon emissions. It has the advantages of simple structure, no pollution, convenient maintenance, etc. Therefore, there is a broad research and application prospect in ship flue gas waste heat recovery. Based on the technology of thermoelectric power generation and the enhanced heat transfer performance of heat pipe, this paper designs and builds an experimental device of thermoelectric power generation using heat pipe to enhance heat transfer. In this paper, a heat pipe type ship flue gas waste heat differential generator is proposed. The main work is as follows: firstly, the experimental device of heat pipe ship flue gas waste heat difference power generation is designed, its heat transfer characteristic is analyzed, the thermal conductivity of each part of the experimental device in the process of heat transfer is calculated, and the thermodynamic model of thermoelectric power generation system is combined. The output performance of the experimental device is calculated theoretically, and compared with the experimental data to verify the feasibility of the principle and the rationality of the structure of the device. Secondly, the experimental platform of the thermoelectric equipment is built. The optimal operation mode of the thermoelectric power generation experimental device is determined and its performance under different operating conditions is analyzed. When the heat source temperature is 275 鈩，

本文編號：2074237