Researches and Analysis of Thermo-Electric Nanofluids Enhancing Heat Transfer and Micro-Generating Applications of VC and HP

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Project title

Code/計畫編號

NSC102-2221-E019-045

Translated Name/計畫中文名

探討熱電奈米等級工作流體應用於增強VC及HP的熱傳性能與微發電效率之研究

Project Coordinator/計畫主持人

Jung-Chang Wang

Funding Organization/主管機關

National Science and Technology Council

Department/Unit

Department of Marine Engineering

Website

https://www.grb.gov.tw/search/planDetail?id=3092471

Year

2013

Start date/計畫起

01-08-2013

Expected Completion/計畫迄

31-07-2014

Bugetid/研究經費

793千元

ResearchField/研究領域

能源工程
電子電機工程

伏打電池(Voltaic Pile)是以流體當電解質的自身發電，為現今電池的起源之一；熱管 (Heat Pipe)及均溫板(Vapor Chamber)是以流體相變化當高效率傳熱路徑，為目前成功應用於電子熱傳領域的熱傳元件。電池為利用兩種金屬之間具有導電性的流體電解質，游離出金屬離子/放出電子，亦即藉由金屬間的活性差異，來產生微電流。而本計畫為結合自身微發電的電池特性於熱管與均溫板兩相熱傳元件上，可具有重量輕、體積小、耐抗震且增強熱傳性能及自給式微發電等節能環保綠色能源的優點。若可藉由熱電奈米等級工作流體(Thermo-Electric Nano-Fluid)增強熱傳性能與微發電效率的特性，應用充填於均溫板(Vapor Chamber, VC)及熱管(Heat Pipe, HP)元件上，可同時具有增強熱傳性能及自身產生發電的特性，以達成綠色能源循環再利用之效益。台灣目前已是全世界生產散熱模組的主要國家，總產值高達第二名；如果要能持續保持這樣的優勢，比其他先進國家更領先進一步開發具有增強熱傳性能及自身微發電效率的HP及VC元件是非常重要的。為了要能夠完整充分探討熱電奈米等級工作流體的研製及分析其應用充填於 VC 與 HP，使其具有增強熱傳性能和自身微發電效率的特性，故本計畫「探討熱電奈米等級工作流體應用於增強 VC及 HP的熱傳性能與微發電效率之研究」將分為兩年來執行。第一年度計畫內容為探討四種電解液流體(自來水、去離子水、海水和氧化鋁奈米流體) 在不同容積與電極種類、面積及距離的變因下，溫度變化對於電流輸出、熱傳率與內阻的影響，比較其之間的特性。所以第一年度計畫的研究目的即是利用因次分析法和田口試驗法，分析不同的流體對於溫度所造成之熱流與熱電性能的性質優劣。奈米流體的製作過程中，適當之乳化劑與分散劑作為奈米流體的界面活性劑是重要的，因此第一年度計畫研究目的之二是以超音波乳化方法研製奈米流體並建立奈米流體增強熱傳性能與自身微發電之理論模式及數值模擬分析方法，以作為第二年度計畫發展目標的基礎。針對評估探討熱電奈米等級的工作流體對於高熱通量之熱源的效益，是本計畫的主要目標。所以第二年度計畫主要是根據第一年度計畫所得到的相關理論模式暨模擬分析方法的結果及奈米流體的樣品，建立以熱流與熱電分析實驗為基礎的驗證，研製並測試三種(低溫 BiTe、中溫 PbTe 與高溫 GeSi)熱電奈米顆粒等級的工作流體性能，以提供合適於 VC及 HP元件的工作流體之性能，並將製作其元件原型之最佳化設計，作為本年度計畫達成的目標。因此，第二年度計畫的主要研究目的之一，為利用超音波乳化法研製三種熱電奈米顆粒(低溫 BiTe、中溫 PbTe 與高溫 GeSe)添加於電解液流體中的熱電奈米流體，並探討熱電奈米等級的工作流體之增強熱傳性能及自身微發電理論模式及設計。並由第一年度計畫所得到的結果，比較此三種熱電奈米流體的性能，發展一適合充填於 VC與 HP元件內部使用的熱電奈米工作流體，建立熱電奈米流體的增強熱傳與微發電性能測試流程、理論模式及數值模擬分析，是第二年度計畫研究目的之二。第二年度計畫研究目的之三為最佳化具有增強熱傳性能及自身微發電的 VC與 HP元件原型的設計。並以最佳化設計為本年度計畫所要達成的最後目標。所以，充分了解熱電奈米等級的工作流體的研製，及分析其應用於 VC與 HP元件藉以增強熱傳性能和自身微發電特性的原理，並建立理論模式也是學術界幫助台灣散熱模組產業界的責任。期能達到具有熱電奈米等級工作流體的 VC 與 HP 元件的概念並最佳化。因此，本計畫在學術方面上及工程實際應用上，皆具有相當的研究價值。Voltaic Pile electrolyte fluid when its own power generation, is one of the origin of the modern battery; Heat Pipe and Vapor Chamber high efficiency heat transfer fluid when path is successfully applied to the electronic heat transfer field vapor-liquid two-phase heat transfer element. Having a conductivity of the electrolyte in the battery in use between the two metal, free metal ions / electrons are emitted, i.e., by the activity differences between the metal, to produce the micro-current. Combined with the characteristics of their own micro-power generation in two-phase heat transfer components (Vapor Chamber and Heat Pipe), light weight, small size, resistant to seismic and self-sufficiency in the decline of the power generation and other energy-saving environmental advantages of green lighting. Thermo-Electric Nano-Fluid can enhance the efficiency of the heat transfer and micro-generation characteristics applied to the Vapor Chamber (VC) and Heat Pipe (HP) element. Taiwan is currently the thermal module main producing countries in the world, the output value as high as second place; is very important to be able to maintain this advantage, more than any other country. In order to be able to complete fully explore the thermo-electric nano-fluids research and analysis of fluid applied the VC and HP enhanced heat transfer and micro-power characteristics, the project “Researches and Analysis of Thermo-Electric Nanofluids enhancing heat transfer and micro-generating applications of VC and HP” is divided into two years. First year plans to explore the four electrolyte solution (tap water, deionized water, seawater, alumina nanofluids) under different volume with an electrode type, size and distance variables, temperature change for current output, heat transfer rate and the internal resistance of the impact, to compare their characteristic between. Therefore, the purpose of the first year of the plan that is the use of dimensional analysis and Taguchi test method, analysis of the fluid nature of the temperature caused by the heat and thermoelectric properties pros and cons. Nanofluid production process, as appropriate emulsifier and dispersing agent surfactant nanofluids important purpose is two of the first year of the plan phacoemulsification method developed nanofluids and establishing Chennai meters fluid as the basis of the second Annual Programs Development Goals and its own micro-generation theoretical models and numerical simulation analysis method to enhance the heat transfer performance. For the Evaluation of the effectiveness of the the thermoelectric nano level working fluid for high heat flux heat source is the main goal of this project. Second annual plans mainly the results of the first annual plans theoretical model-cum-simulation analysis method and nano-fluid samples to establish the basis of analysis of experimental heat with thermoelectric verification, development and test three ( Cryogenic BiTe, temperature PbTe with high temperature GeSi) thermoelectric nanoparticles grade fluid performance, to provide performance suitable for the working fluid of the VC and HP components, and production of its components optimize the design of the prototype as the year plan to reach the target. Therefore, one of the main purpose of the second annual program for phacoemulsification method developed the three thermoelectric nano particles (low temperature the BiTe, temperature PbTe and high temperature GeSe) added to the thermoelectric nano fluid in the electrolyte fluid, and explore the the thermoelectric nano level working fluid enhanced heat transfer performance and micro-generation theoretical models and designs. By the results obtained in the first annual plans, compare this three pyroelectric nano fluid performance, the development of a suitable filled with VC and the thermoelectric nano working fluid HP element internal use, the establishment of the thermoelectric Nanofluid enhanced heat transfer and performance testing of micro-generation processes, theoretical models and numerical simulation analysis, is the second annual plan research purpose. The second annual plan research purpose to optimize the design of the enhanced heat transfer performance and their own micro-generation VC and HP components prototype. And to optimize the design for this year plan to achieve the final goal. Fully understand the the thermoelectric nano level the development of the working fluid, and analysis of the applied VC and HP components in order to enhance the heat transfer performance and micro-power generation characteristics of the principle and the establishment of the theoretical model in academia to help cooling module industry in Taiwan responsibilities. Period to achieve the concept with the the thermoelectric nano level working fluid VC and HP components and optimization. Therefore, this project on the academic and practical application of engineering, both have considerable value.

Keyword(s)

伏打電池
均溫板
熱管
兩相熱傳
電化學
熱電奈米流體
Voltaic Pile
Vapor Chamber
Heat Pipe
Two-Phase Flow
Electrochemistry
Thermo-Electric Nano-fluid

DSpace CRIS

Researches and Analysis of Thermo-Electric Nanofluids Enhancing Heat Transfer and Micro-Generating Applications of VC and HP

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