Investigations on the Thermal Performances of U-Shaped and L-Shaped Heat Pipes-Heat Sink through Experiment Method with Least-Square Estimation

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基本資料

Project title

Code/計畫編號

MOST103-2221-E019-025

Translated Name/計畫中文名

熱流性能實驗搭配最小平方法分析U 型及L 型熱管熱沉模組性能

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=8345078

Year

2014

Start date/計畫起

01-08-2014

Expected Completion/計畫迄

31-07-2015

Bugetid/研究經費

751千元

ResearchField/研究領域

機械工程

自從十幾年前可以解決筆記型電腦散熱問題的兩相流變化傳熱元件-熱導管(Heat Pipe) 製造技術引進台灣後，散熱模組的產業就逐漸在我國生根，目前台灣可說是世界上最重要的設計製造的生產基地之一。若要持續保持這樣的優勢，比其他國家更領先進一步的了解其操作性能與整體應用層面是非常重要的。熱管熱沉散熱模組具有下列三項優點：因為利用熱管內部工作流體液/氣兩相變化高熱容量的特性，使散熱模組可在很小的溫度梯度下散逸大量的熱流量，所表現的熱性能佳，此為其優點之一。在工作流體的熱傳遞路徑上，可分別利用浮力及重力或毛細力來當作氣體與液體的驅動力，不需要任何流體機械的幫助，例如幫浦，所以散熱模組本身具有高可靠度，此為其優點之二。散熱模組中的熱管可以是數根可彎曲性串/並聯的，所以具有高擴展性，此為其優點之三。因為熱管熱沉散熱模組具有上述眾多優點，是兼顧考量成本及熱性能的散熱模組，可加以應用改善目前產業中之急需要高速散熱的系統部分，諸如個人電腦、筆記型電腦、平板電腦、顯示卡及伺服器的散熱系統與高功率 LED 照明等等。本計畫「熱流性能實驗搭配最小平方法分析 U 型及 L 型熱管熱沉模組性能」是建立在主持人對於熱管熱沉散熱模組既有的研究成果 EHPHS V1.0 視窗軟體程式上，針對常用的不同形式 L 型及 U 型熱管熱沉散熱模組的操作性能做延伸探討。主要研究目的之一是利用熱流性能實驗搭配熱傳方程式重疊原理分析的方法，探討分析 L 型及 U 型熱管結合熱沉散熱模組在不同風扇數量及轉速與不同發熱源面積情況的熱流性能。主要研究目的之二為省略單根熱管的熱流性能實驗及切斷散熱模組中嵌入熱管的方法，以熱阻分析配合最小平方法疊代求出其操作性能極限和熱管分路熱流量的比率。主要研究目的之三是將分析 L 型及 U 型熱管結合熱沉散熱模組的方法，撰寫成一套視窗操作運算軟體程式 EHPHS V2.0，並進一步探討嵌入式熱管熱沉各部件性能在不同參數下的變化，使其能更符合散熱模組產業的最新需求。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。Since the heat problems of notebook can be solved more than a decade ago, a two-phase change heat transfer components - heat pipes manufacturing technology introduced into Taiwan, the cooling module industry is gradually taking root in our country, Taiwan can be said is the world's production and one of the most important design and manufacturing. The heat pipe heat sink cooling module has the following three advantages: 1. utilizing the high heat capacity with very small temperature gradient by latent heat between liquid-gas phases and good thermal performance of heat pipe, so it can reduce the thermal resistance of thermal module. And the thermal performance is good. 2. The flow in the system is driven by buoyancy and capillary force. These two driving forces are self-induced, so flow-driven pump component is not necessary in this system. Its reliability is high. 3. The main components of heat pipes can be much and bending combination each other. Therefore the arrangement of the component is much flexible. Therefore, with the above pros, the embedded heat pipe heat sink thermal module is the most potential system with low cost and good thermal performance, such as personal computers, notebook, tablet PCs, graphics card and server cooling system, and high power LED lighting. This project is to build an extension of the operating performance in the heat pipe heat sink cooler existing research EHPHS V1.0 Windows software program host, commonly used in different forms L-shaped and U-shaped heat pipe heat sink cooling module discussed. The first main purpose of the present research is to experiment with thermal resistance of the heat flow performance analysis of the superposition principle, to investigate the combined analysis of the L-shaped and U-shaped heat pipe heat sink cooler in the number and speed of different fans with different heat source area thermal performance. The second main purpose of the present research is to the omitted single heat pipe heat performance experiments and cut off the embedded heat pipe cooling module thermal resistance analysis with the least squares method iteration volume ratio Shunt obtained its operating performance limits and heat pipe heat . The third main purpose of the present research is the analysis of the L-shaped and U-shaped heat pipe combined with the heat sink cooler, written as a set of Windows operating computing software program EHPHS V2.0 and further explore the embedded heat pipe heat sink the performance of the various components in different parameters under the change, so that it can better meet the industry demand of the cooling module. Therefore, this project on the academic and practical application of engineering, both have considerable value.

Keyword(s)

熱管
L 型
U 型
最小平方法
熱管熱沉散熱模組
視窗軟體
Heat Pipe
U-shaped
L-shaped
Least Squared Method
Embedded Heat Pipe Heat Sink Thermal Module
Window Software

DSpace CRIS

Investigations on the Thermal Performances of U-Shaped and L-Shaped Heat Pipes-Heat Sink through Experiment Method with Least-Square Estimation

基本資料

Description