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  本文選題：余熱回收 + 毛細泵��；參考：《中南大學》2011年碩士論文

【摘要】：毛細泵系統(tǒng)目前廣泛應用于航天器的熱控制和電子器件的散熱,其工作原理與熱管相似,是一種利用工質(zhì)相變換熱進行遠距離傳熱的裝置,但與熱管相比,毛細泵系統(tǒng)具有更強的傳熱能力和抗重力性能�？紤]到毛細泵系統(tǒng)的諸多優(yōu)點,本文以其在中低溫工業(yè)余熱回收中的應用為目的,設計了一套以水為工質(zhì)的平板式毛細泵系統(tǒng),并對其性能進行了實驗研究。 為減小毛細泵系統(tǒng)與熱源之間的熱阻,蒸發(fā)器設計成平板型,分為可拆裝的上板和下板。為研究側(cè)壁導熱對平板型蒸發(fā)器運行情況的影響,采用VOF多相流模型對蒸發(fā)器進行了數(shù)值模擬,發(fā)現(xiàn)減小下板側(cè)壁厚度或者使用較小導熱系數(shù)的材料作為蒸發(fā)器下板能夠減少蒸發(fā)器側(cè)壁的導熱量,避免毛細芯下部液體工質(zhì)氣化導致的系統(tǒng)失效。本文選擇了黃銅作為蒸發(fā)器上板材料,聚四氟乙烯作為下板材料,濾紙作為毛細芯材料。 對本文毛細泵系統(tǒng)進行的性能研究包括：啟動性能、運行穩(wěn)定性、熱源方向的影響、抗重力高度、傳熱效率以及兩蒸發(fā)器并聯(lián)的運行情況。結(jié)果表明：系統(tǒng)具有良好的啟動性能和運行穩(wěn)定性,未出現(xiàn)溫度波動現(xiàn)象；不同熱源方向?qū)ο到y(tǒng)運行情況無明顯影響；系統(tǒng)抗重力高度達到0.6m,能滿足對抗重力高度要求較低場合的應用；系統(tǒng)的實際傳熱效率約為70%,蒸發(fā)器與冷凝器之間的溫差對傳熱效率有較大影響；兩蒸發(fā)器并聯(lián)的系統(tǒng)能夠成功運行,表明毛細泵系統(tǒng)具有能將分散熱源集中的性能。 毛細泵系統(tǒng)是傳熱裝置,為對系統(tǒng)傳導出的熱能進行利用,本文將溫差發(fā)電器與毛細泵系統(tǒng)相結(jié)合,設計了一套能夠?qū)⒐I(yè)余熱回收并轉(zhuǎn)換為電能的裝置,并通過實驗研究了該裝置的熱電轉(zhuǎn)換效率。最后,針對鋁電解槽側(cè)壁余熱的回收利用,設計了一整套熱能導出、發(fā)電以及電能控制系統(tǒng),理論分析了其余熱利用效率可達3.5%,電解一噸鋁能產(chǎn)生電能19.8kWh,具有一定的經(jīng)濟效益。
[Abstract]:Thermal control of capillary pump system is widely used in spacecraft and the heat dissipation of electronic devices, the working principle of the heat pipe and is similar to that of a device using refrigerant phase-change heat transfer heat transfer distance, but compared with the heat pipe, the heat transfer capacity of capillary pump system has stronger anti gravity performance and considering the advantages. The capillary pump system, for the purpose of its application in low-temperature industrial waste heat, a plate type capillary pump system based on water propellant is designed, and its performance was studied.
To decrease the thermal resistance between the capillary and heat pump system, the evaporator design is flat, divided into upper plate and the lower plate can be disassembled. In order to study the effect of side wall heat conduction to the evaporator, the VOF multiphase flow model of evaporator is simulated, found under reduced plate side wall thickness or smaller the thermal conductivity of materials as the evaporator plate can reduce the thermal capacity of evaporator side wall, avoid failure system of liquid vaporization under the wick. The lead brass material as the evaporator plate, Teflon as the plate material, the filter paper as the wick material.
Study on the performance of the CPL include: running stability, starting performance, the influence of heat source direction, anti gravity height, the heat transfer efficiency and the operation of two parallel evaporators. The results show that the system has good startup performance and operational stability, without the temperature fluctuation; different source direction has no obvious effect on the operation of the system system; anti gravity height is 0.6m, can meet the application requirements of low gravity height situations; the actual heat transfer efficiency of the system is about 70%, the temperature difference between the evaporator and the condenser has a great influence on the heat transfer efficiency of the system; two parallel evaporators can run successfully, that CPL can be centralized heat dispersion performance.
CPL is a heat transfer device for heat on the system transmission of the use, the thermoelectric generator and the capillary pump system combined to design a set of industrial waste heat recovery and converted into electrical energy device, and through the experimental study on the thermoelectric conversion efficiency of the device. Finally, the recovery of aluminum electrolytic tank side wall of waste heat utilization, design a set of heat transfer, power generation and power control system, the theoretical analysis of the remaining heat utilization efficiency can reach 3.5% tons of aluminum electrolysis to produce electricity 19.8kWh, has a certain economic benefits.

【學位授予單位】：中南大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：TH38;TK115

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本文編號：1730960