Cheng-hsuan Hsieh, 謝承軒

碩士 / 國立中央大學 / 電機工程學系 / 102 / Because of its narrow band gap, high electron mobility and high electron saturation velocity, InAs is considered a promising candidate for low power consumption field-effect transistors (FETs). Its fin field-effect transistors (FinFETs) might be used in the integrated circuits in the future. However, the interface traps at high-κ/III-V interface, which have significant negative influence on device performance, must be reduced before it can be used for practical appli...

Qing-Wen Zeng, 曾慶文

碩士 / 中原大學 / 機械工程研究所 / 100 / When the LED lamp is not in a completely closed environment the flow field in the lamp will not show complete natural convection but show mixed convection or forced convection which is divided by inlet fluid velocity, when LED heat sink fin’s arrangement is perpendicular to the direction of inlet fluid it may causes some thermal problems like non-uniform temperature distribution or hot point. To avoid those thermal problems the perforate fin had been investigated by n...

Cheng-Yu cgen, 陳正裕

碩士 / 國立臺北科技大學 / 能源與冷凍空調工程系碩士班 / 101 / This study investigate a micro-channel heat sink integrated with micro jets. The cooling fluid was introduced to a 12×12 mm2 heated surface, which had 11 micro-channels, each channel was 0.8 mm high, 0.6 mm wide, and 12 mm in length. Micro-fin of 0.3mm height, 0.2mm width, and 12mm in length is made on the bottom of each channel.The volume of micro-channels reduces approximately 12.5% by the micro-fins. In the tests, the working fluid is FC-72, the saturati...

Jen-Hsien Chang, 張仁憲

碩士 / 國立中央大學 / 光電科學研究所 / 100 / Before executing Taguchi method, we must estab¬lish the five parameters such as the number of fins and the fin thickness, the fin height, the fin thickness of substrate, the radiation material on surface. First, the above five parameters must be determined. Next, these parameters are divided into four levels separately in order to reduce the maximum temperature of LED street light . This research using Taguchi Method makes the optimization of LED street light he...

Chi-Hung Peng, 彭吉宏

碩士 / 逢甲大學 / 機械與電腦輔助工程學系 / 101 / This thesis analyzed and discussed the metal hydride hydrogen storage heat and mass transfer in the tank, which equipped fined heat tube. After several validations, the mathematical models and numerical methods constructed in this study could accurately simulate the experimental results. Besides, in order to comprehend how various parameters within fined heat control system effect metal hydride hydrogen storage, hence we compared the initial hydrogen pressure, tem...

Chao-Yu Chen, 陳炤宇

碩士 / 大同大學 / 機械工程學系(所) / 101 / In this study, a heat sink with fixed total fin volume is simulated to pursue the maximum thermal dissipation. The fin can be divided into plate fin and pin fin on a heat sink. The shapes of cross-sectional area for the pin fin are square, circular, equilaterally triangular and rectangular. By setting thermal conductivities of heat sink and fins at first, the thermal dissipation equation of the heat sink can be theoretically derived by inputting parameters including...

Ci-Yuan Siao, 蕭棨元

碩士 / 國立臺灣海洋大學 / 機械與機電工程學系 / 101 / The objective of this study is to investigate the thermal characteristics of fin-tube air heaters powered by Dowtherm oil, and the outlet is used in heating a drying chamber. The Reynolds number, heat transfer coefficients inside and outside the tube are calculated, and hence the heat transfer area and the number of tubes are readily obtained. In addition, the layout of the tubes is studied accompanied with the pressure drop required. Secondly, according t...

Chien-hao Tseng, 曾健豪

碩士 / 國立成功大學 / 機械工程學系碩博士班 / 96 / The study applies the Laplace transform method and the finite-difference method in conjunction with the least-squares scheme, the square spline and temperature measurements to estimate the heat transfer coefficient on the cylindrical surface at different inclined angle. The study assumed the heat transfer coefficient on this cylinder is non-uniform. Thus the whole cylinder is divided into several sub-intervals. Later, a series of continuous square polynomial funct...

Kuo-zuan Hsu, 徐國軒

碩士 / 國立成功大學 / 機械工程學系碩博士班 / 96 / This present study applied an inverse method involving the finite difference method in conjunction with the least-squares scheme and experimental temperature measurements to estimate the unknown heat transfer coefficient and heat transfer rate on a vertical rectangular fin with various fin spacing and fin height in natural convection. To estimate a more accurate estimation, thus the whole plate fin was divided into several analysis sub-fin regions before performin...

Chen-Chia Huang, 黃振嘉

碩士 / 國立澎湖科技大學 / 海洋創意產業研究所 / 97 / The organs of most marine fish larvae had not formed after hatch, and the living function also had not completed. These conditions made them failure to feeding and escape from predators. Larvae needed nutrition increasingly, and the ability of feeding and swimming was stronger as growing. If larvae could not obtain sufficient feed and avoid the predators, the larvae would die massively. Therefore, to fully understand the development of initial life stage and ...

Tai-Wei Chen, 陳泰維

碩士 / 國立臺灣大學 / 機械工程學研究所 / 95 / Along with the explosion of LED-related industry, applying LED containing low-voltage operation, high-color rendering, and low pollution to LCD TV backlight is going to be no longer a high-priced business. In the future, it is very possible to solve the heat dissipation problem in the jumbo-sized backlight models by the application of natural convection which is low-cost, no extra power supply, and no vibration phenomenon. Therefore, under the limitation of TV exter...

Huang, Chuan-chin, 黃傳秦

碩士 / 國立高雄海洋科技大學 / 輪機工程研究所 / 96 / This research involves the experimental and numerical studis with the objectives to study the endwall heat transfer rates; pressure drops coefficients and thermal performance factors for a narrow channel with attached and detached pin fins. The experimental and numerical works are respectively summarized as follows: Experimental work Endwall heat transfer and pressure drop characteristics in four rectangular channels with a channel aspect ratio of 4 and the stag...

Tzu-Sung Yen, 嚴子松

碩士 / 國立高雄師範大學 / 電子工程學系 / 102 / In thin work, Negative Bias Temperature Instability (NBTI), Positive Bias Temperature Instability (PBTI) and Hot Carrier Effect (HCE) were used to study the reliability of FinFET devices. Power law analyze was used to analysis the degradations of devices. NBTI was applied first to explore the degradation mechanism of P-type FinFET devices. It is observed that the threshold voltage shift negative ward because more holes are trapped in gate dielectric during stress t...

Young-Chang Liu, 劉永銓

碩士 / 國立雲林科技大學 / 機械工程系碩士班 / 94 / In the present study, nine plate fin-and-tube heat exchangers were tested. In the geomorphic diameter of heat exchangers, the corresponding longitudinal tube pitches and transverse tube pitches for the tested samples were 33 mm and 38.1 mm, respectively. The nominal tube diameter for all the samples were 15.8mm, and there are three different types of the number of tube rows and fin pitches including 2, 4 and 8-rows and 2.12 mm, 2.54 mm and 3.17 mm for fin pitches....

Yin-Yan Chan, 陳賢仁

碩士 / 國立成功大學 / 工程科學系專班 / 94 / In recent years, the electronic components are continuously developing towards high performance and shrinking it’s size. But also more higher thermal energy also produced. Using heat sink is always the common heat dissipation method as we know. We usually use two kinds of cooling method with heat sink, that is natural convection and forced-air convection. But, among various cooling methods, water cooling system always have the best performance. The real advantage of ...

Tsai, Yu-Min, 蔡祐民

碩士 / 國立交通大學 / 機械工程研究所 / 85 / In this research report, seven convex-louver fin condensers and seven wavy fin condensers with indentical tube diameter (Do), longitudinal and transverse tube pitch (Pl, Pt) but differential numbe rof tube rows (N) and fin pitch (Fp) were tested and analyzed for the heat transfer and pressure drop characteresties. Results are presented with the Colburn j factor and Fanning factor f against Reynolds number (ReDc) based on the tube collar diamater (Dc) in the range of...

Lu-KuangChu, 朱律光

碩士 / 國立成功大學 / 機械工程學系碩博士班 / 98 / In the absorption-type refrigeration and air conditioning field, lithium bromide solution has been widely used as an absorbent. In addition to inlet absorbent concentration, temperature, flow rate and absorption pressure, the total contact area of the lithium bromide solution with water steam is an important parameter for the performance of the absorber. In this study, we design an array of tilted fins on a horizontal absorber to increase the absorption surface. A...

Cheng-TingYu, 于承廷

碩士 / 國立成功大學 / 機械工程學系碩博士班 / 98 / The present study applies the finite difference method in conjunction with the least-squares scheme and the experimental temperature data to predict the average convection heat transfer coefficient and the fin efficiency on the rectangular vertical fin of two tubes plate finned-tube heat exchangers. The heat transfer coefficient on this rectangular fin is very non-uniform. Thus the whole plate fin is divided into several sub-fin regions in order to predict the ave...

Ge-JhangHe, 何格彰

碩士 / 國立成功大學 / 機械工程學系碩博士班 / 98 / The present study applies an inverse method involving the finite difference method in conjunction with the least-squares scheme and experimental temperature measurements to estimate the unknown natural-convection heat transfer coefficient, heat transfer coefficient under the isothermal condition, heat transfer rate and fin efficiency on a rectangular fin mounted on vertical or horizontal plate in closed or open rectangular enclosures. To obtain the present estima...

Tai-chang Lu, 盧泰昌

碩士 / 國立中央大學 / 機械工程研究所 / 99 / Heat transfer of vertical oriented flat plate and straight fin enhanced by electrohydrodynamics (EHD) is experimental investigated in this work. Heat transfer of four types of fin having the same frontal area are discussed under natural convection and EHD enhancement, including flat plate, straight fin with different height, and offset strip fin. 　Heat transfer coefficient of flat plate is the highest among other fins under both natural convection and EHD enhancement...

Liou, Gi-Ju., 廖計註

碩士 / 國立中興大學 / 機械工程學系 / 94 / The experiment of this thesis explores the cooling capability of the heat pipe of P4 (Pentium4) RHE thermal module in combination with cooling fins. Under the conditions of established heat pipe thermal conductivity rate, heat pipe-related size, fan capability curve, fin-related size (such as length, spacing, thickness, number of fins and material, We analyzed the cooling fin shape parameters, to achieve bester RHE cooling effect. The cooling fin shapes explored in th...

Chiang Wei Chieh, 江偉杰

碩士 / 國立中興大學 / 機械工程學系 / 94 / Due to the miniaturization and the increased functionality of consumer electronics thermal requirements have become increasingly difficult. One solution is to move the heat from the microelectronics into an area or areas, within the enclosure, where there is more available space and or increased air flow. This can be accomplished very effectively with a Remote Heat Exchanger (RHE). The purpose of this paper is to analyze the effects that the reflow oven has on the...

Jeng-Hung Yu, 余政弘

碩士 / 國立臺灣大學 / 應用力學研究所 / 94 /

Jhih-hao Jhong, 鍾志豪

碩士 / 元智大學 / 機械工程學系 / 95 / The thermal performance and pressure drop of the stack heat sinks with vortex generators are presented in this study. Effects of the sizes and arrangements of triangle wings, fin pitches on the pressure drop and thermal performance of the heat sinks are experimentally investigated in a wind tunnel. It is found that having vortex generators can sufficiently improve the thermal performance and reduce the pressure drop compared with the louvered heat sinks with the same fi...

黃為棟

碩士 / 國立海洋大學 / 機械與輪機工程學系 / 91 / The feasibility and effectiveness of air jet impingement cooling on pin fin heat sinks applied in personal computers (PC) were investigated numerically in this study. The effects of fin height, fin width, base plate thickness of the heat sink and the vertical spacing between the nozzle and the heat sink were discussed. Two heat sinks (each of base plate thickness 7 mm, fin height 32.75mm, and fin widths 4.13mm and 5.3mm, respectively) were cast in a desktop PC, and...

Chen, Chien-Hung, 陳建宏

碩士 / 國立交通大學 / 機械工程系所 / 101 / In order to enhance the heat transfer rate of heat sink plate fin, this study made a brand new design to existing heat sink plate fin by introducing the concept of “partial bypass”. The basic idea is to introduce bypass cold stream which bypasses the front part of the plate fin and mixes with the hot stream across the front part of the plate fin, and the mixed stream flows through the rear part of the plate fin. Through this concept, plate fin area is reduced but low...

Cheng, Yu-Cheng, 鄭宥澄

碩士 / 國立交通大學 / 機械工程系所 / 101 / This research is for improving the performance of fin-and-tube heat exchangers with the concept of “Partial bypass”. The basic idea of “Partial bypass” is to introduce bypass stream which bypasses the front part to the rear part of the heat exchanger via reducing the contact area of the front part of the heat exchanger. Reducing the contact area of the front part of the heat exchanger will lower the heat transfer performance; however, the heat transfer performance of...

Li-Kung Chin, 秦禮功

碩士 / 國立高雄大學 / 電機工程學系碩士班 / 101 / A new structure called Fin Field-Effect Transistor (FinFET) is proposed to achieve continuous scaling down of MOSFET. In this thesis, the characteristic and reliability of FinFET are studied with different dimensions. It is found that the short channel effect enhanced with the decreasing of channel length under constant fin width. It caused the decreasing of the threshold voltage (VT), increasing the driving current (ID), however, the subthreshold swing (SS) als...

Chen, Kuo-Hung, 陳國弘

碩士 / 國立中山大學 / 機械工程研究所 / 86 / Air-cooled condensers are widely applied to small-scale air-conditioning system, Since condenser is a key component that decides the performance of the air-conditioning system.It is important to study the methods ot improve its heat transfer performance. Furthermore, to replace the traditional CFC refringerant is an imperative policy because of depletion of Ozone by traditional refrigerant. Therefore, the researchers have to pay more attention to the problems of cond...

CHEN PING HUA, 陳秉樺

碩士 / 國立聯合大學 / 電子工程學系碩士班 / 103 / This study describes the fabrication of a trench junctionless field-effect transistor (trench JL-FET) and asymmetric gate trench junctionless field-effect transistor (AG trench JL-FET). This study uses the dry oxidation to form the ultra-thin channel instead of directly depositing the thin-film as the poly-Si channel in JL-FET and it could get larger grain size and less grain boundary than directly depositing the thin-film. The dry etching process is utilized firs...

Chia-YuTseng, 曾嘉裕

碩士 / 國立成功大學 / 機械工程學系 / 103 / A 3D numerical model of thermoelectric generator (TEG) modules are attached to a large chimney plate is proposed and solved numerically using a control volume based finite difference formulation. The thermoelectric module consists of a thermoelectric generator, an elliptical pin fin heat sink, a cold plate based on water cooling. In the chimney the temperature of flue gases would be 450-650K. Therefore, both the effects of convection and radiation heat transfer shoul...

李煒松

碩士 / 元智大學 / 機械工程學系 / 85

Pan, Hsin Wei, 潘信瑋

碩士 / 國立清華大學 / 電子工程研究所 / 103 / Recently ,due to the rapidly developing of commercial electronics, the demands of fast and mass storage devices increase. Flash memory dominates the market of nonvolatile memory. However with the technology scaling down, flash memory come up with many challenge, such as inadequate charge storage, high operation voltage and physical limit, which urges the study of novel nonvolatile memory. In which, RRAM is the most promising candidate for the next generation. In thi...

Yu, Szu Chun, 尤思淳

碩士 / 國立清華大學 / 工程與系統科學系 / 103 / FinFET devices have higher on current and lower leakage current due to better gate control ability compared to the conventional single gate planar FETs. With the scaling of gate length, threshold voltage tuning by channel doping will be an issue. With the scaling of EOT, flat band voltage roll-off caused by oxygen vacancy needs to be solved. There are three parts in this thesis to dicuss the impacts of high-k/metal gate process on device characteristics, which are...

Lin, Ko Wei, 林个惟

碩士 / 國立清華大學 / 工程與系統科學系 / 103 / With the development of Moore's Law, short channel effect (SCE) has been always a serious issue for CMOS technology. This study, we describe the fabrication of a trench junctionless poly-Si fin field-effect transistor (trench JL-FET) to further improve short channel effect. This trench JL Fin-FET enhances the gate control over its silicon channel. The trench JL Fin-FET can easily to form the ultra-thin channel thickness (TCH) and control the gate length (LG) by dry...

Chou, I Wen, 周怡文

碩士 / 國立清華大學 / 動力機械工程學系 / 103 / In this study, the effects of chassis perforation on the natural convection from a horizontal rectangular-fin heat sink have been studied numerically. The parameters include perforation pattern, local and overall opening ratio, and the thermal conductivity of the chassis material. In the first part, single-channel analysis is conducted for various perforation patterns. The results show that when the upper chassis wall is perforated over the middle region of the hea...

LIN,ZHANG-JUN, 林丈鈞

碩士 / 國立中山大學 / 機械工程研究所 / 79 /

C. L. Wu, 吳繼倫

博士 / 國立臺灣大學 / 海洋研究所 / 89 / The South Atlantic albacore resource was utilized mainly by Taiwanese and Brazilian longliners and the baitboats from South Africa and Namibia. The annual South Atlantic albacore production ranged from 25,000 to 40,000 mt in last decade, and more than 60% was caught by Taiwanese longliners. The main purpose of this study was to evaluate the stock status of South Atlantic albacore and to provide better scientific criteria needed for management purpose. The o...

Wang, Dan-Chi, 王丹琪

碩士 / 國立臺灣大學 / 動物學研究所 / 76 /

Wu Bing-Yan, 吳秉彥

碩士 / 國立高雄應用科技大學 / 應用工程科學研究所 / 100 / The Electronic components toward the development of light, thin, short, small, to minimize the components and intensive. The heat flux for unit area of each components is getting better. The piezoelectric fan has the characteristics of small size, ultra-light, low volume and low consume of work. It can substitute the traditional axis fan and placed on the micro electric component for cooling application. This study used the flow visualization technique (Middle...

Sin-Sian Wang, 王信憲

碩士 / 建國科技大學 / 機械工程系暨製造科技研究所 / 104 / This study proposes heat sink module with perforated flow ducts design. Employing the numerical simulation and the experimental measurement method, the natural convection heat transfer characteristics of cylindrical heat sink with flow ducts for LED lamp are investigated. The design of cylindrical heat sinks with multi flow ducts increases the flowing ability of fluid in the thermal module, and reducing the flowing influence of fluid from the fins. It also inc...

Wei-Chieh Chen, 陳煒杰

碩士 / 淡江大學 / 航空太空工程學系碩士班 / 103 / This study is based on the writings of Adrian Bejan Design with Constructal Theory, changing the shape of sunflowers fin. Investigate different shape of fins for heat transfer characteristics. Maintain the total surface area of sunflowers fin and changes its Svelteness, the numbers of bifurcated fins, dimensionless parameters D and R, and use numerical simulation to analyze the influence of changes the structure of fins for the thermal resistance. The heat source ...

Chung Qua Lin, 林全貴

碩士 / 國立高雄應用科技大學 / 機械與精密工程研究所 / 96 / Because of the evaporator usually use in inside and outside the very great environment of the difference in temperature. Therefore, the Humidity in the air will condense the frost on evaporator surface, even become the ice. And then creates the thermal resistance. The liquid nitrogen evaporates through the evaporator. Influence the liquid nitrogen to absorb the heat evaporation and become superheated vapor factor to have very much. The factor include the evapo...

Rui-Lin Wang, 王瑞麟

碩士 / 大同大學 / 機械工程學系(所) / 97 / ABSTRACT The goal of this thesis is try to assist engineer to design an effective Heat Sink, which intent to have the most effectiveness in handling maximum heat dissipation is presented , under limited space. And, the material cost and weight are also under consideration in this study. The purpose of this study is focusing on the Longitudinal Rectangular Heat Sink, which the volume and fin number as well as one side depth have already known, for the length, width, a...

Jia-jian Hong, 洪嘉鍵

碩士 / 國立高雄大學 / 電機工程學系碩士班 / 102 / 紙本專利開放日106.07.30

Wen-Chi Yang, 楊文吉

碩士 / 國立臺灣大學 / 應用力學研究所 / 104 / In nature, the function behind the schooling behavior of fishes mainly is to defend themselves from large predators, and to use kinetic energy generated by the external environment to achieve a better swimming efficiency. For an individual among the schooling fish, the wake flow generated from the fishes that are ahead and upstream is affected by the Karman vortex. As a result, this experiment uses the Karman vortex flow field generated by a semicircular cylinder, a...

Yang-Cheng Da, 楊承達

碩士 / 國立雲林科技大學 / 機械工程系碩士班 / 95 / ABSTRACT This study conducts an experimental study to examine the frictional and heat transfer performance for several pin fins with different shape and heat transfer area. The flow conditions are turbulent and confined flow. The tested pin fins include elliptic pin fin, droplet pin fin, square pin fin, airfoil pin fin and circular pin fin. The test results are divided into friction loss and heat transfer for analysis. (1) The heat transfer coefficients for differ...

Yung-Chuang Chen, 陳永全

碩士 / 中原大學 / 土木工程研究所 / 94 / ABSTRACT A numerical calculation procedure based on the least-squares finite element method (LSFEM) is employed to solve the Navier-Stokes equations and energy equation for simulating flow fields and heat transfer in a channel of a build-in circular tube with and without a rectangle splitter plate. For different Reynolds numbers (Re=200,600,1000) and different splitter plate lengths (0.2H,3H,4H) in this paper, the distribution for the streamline, pressure, temperat...

Jyun-Hong Chen, 陳俊宏

碩士 / 國立高雄應用科技大學 / 模具工程系碩士班 / 94 / As technology advances, many products move towards electrification. Heat transfer is very important in the electronic industry. The finned heat sink is the most convenient and economic way of cooling. This research uses the Particle Image Velocimetry System－a non-invasive method that measures the interior flow patterns of the plate-finned and pin-finned heat sink. Different fan sizes were used along with two different flow types; for example, blow-out and draw-i...

Ching-Ming Chiang, 江慶銘

碩士 / 元智大學 / 機械工程學系 / 94 / This study presents the thermal-hydraulic performance of heat sinks having complex, delta wing, louver, plain, and slit fin patterns. Comparison of the associated heat transfer performance and the effect of fin pitch are made. Test results indicate that the enhanced fin pattern, like louver fin, is preferable to the plain fin geometry when operating at a higher frontal velocity or at a larger fin pitch. It is also found that the heat transfer performance of louver fins ...