I WEI TANG, 黨一為

碩士 / 國立清華大學 / 工程與系統科學系 / 92 /

Yu, Chia Yu, 游家瑀

碩士 / 國立清華大學 / 電子工程研究所 / 105 / This thesis presents the studies of the gate dielectric reliabilities in FinFETs. Two topics are covered in this thesis: time dependent dielectric breakdown (TDDB) and negative bias temperature instability (NBTI). The TDDB of N type FinFETs were measured and the oxide trap densities were studied. The gate stress induced leakage currents (SILC) for N-FinFETs are found to be increased by 30% over the fresh devices. As compare to the reported 300% increase in SILC ...

王冠權

碩士 / 國立勤益技術學院 / 冷凍空調系 / 94 /

Hsin-Wei Chen, 陳欣緯

碩士 / 國立勤益科技大學 / 冷凍空調系 / 101 / The heat transfer and pressure drop performance of X type louver fin and tube heat exchangers are studied. The plate type and curved shape heat exchangers characteristics are compared to provide design reference of louver fin and tube heat exchangers. The geometries of the fin and tube heat exchangers are: one-row and two-row, the longitudinal tube pitch is 12.7mm, the transverse tube pitch is 21mm, the tube collar is 7.3mm, the fin thickness is 0.1mm, two fin pitch...

JUI-SHENG HUNG, 洪瑞聲

碩士 / 國立成功大學 / 機械工程學系專班 / 96 / The present study applies the finite-difference method in conjunction with the least-squares scheme and measured temperatures to estimate the average convection heat-transfer coefficient, total heat-transfer rate and fin efficiency on a vertical rectangular fin in an insulated enclosure. The heat-transfer coefficient on this rectangular fin is very non-uniform. In order to predict the average heat-transfer coefficient on a plate fin, the whole plate fin is divided t...

Hsin-Hsuan Wu, 吳欣璇

博士 / 國立臺灣大學 / 機械工程學研究所 / 99 / Two analytical models were used in this study to predict the performance of a plate-fin array heat sink in forced convection and natural convection cases respectively. The optimization of geometry variables for designing a plate-fin heat sink in both cases was also analyzed in this study. While the pressure drop of heat sink was fixed at 10 mmAq, and the height was fixed at 24 mm in forced convection situations, optimal values for fin spacing, base thickness, base ...

YE,RONG-HUA, 葉榮華

博士 / 大同工學院 / 機械工程研究所 / 79 /

ZHANG, CHUI-KAI, 張水鍇

博士 / 國立臺灣大學 / 海洋研究所 / 81 /

Yen-Feng Li, 李彥鋒

碩士 / 國立臺灣大學 / 機械工程學研究所 / 102 / In this study, multiple piezoelectric-magnetic fans cooling system is applied on the thermal management of Light-emitting diodes lamp (module A) and CPU chip(module B). The multiple piezoelectric-magnetic fans system composed of one piezoelectric fan and two magnetic blades. By applying the piezoelectric effect, magnetic effect and resonance effect, multiple piezoelectric-magnetic fans system induces force convection by fast vibration. The experimental results show...

Che-Wei Chang, 張哲瑋

碩士 / 國立臺灣大學 / 應用力學研究所 / 102 / Abstract 　 In this study, we investigate three-dimensional thrust mechanisms of finite rigid and deformable flapping plates experiment as a caudal fin of the BCF (body and/or caudal fin) swimming fish at low Reynold numbers , water propeller vehicles in recent years, many scientist involved in research, and biomimetic water propeller vehicle is popular, with a high from its water propulsion mechanism, both environmental protection, green energy, privacy and so on. ...

Liao, Yi-Pin, 廖一評

碩士 / 大同大學 / 電機工程研究所 / 78 / In this thesis, transverse modal analysis (TMA) is carried out to exame a coupled strip-finline line structure. As a shielded structure with rectangular cross section, the associated unknown field quantities can easily be expanded in terms of the waveguide modal functions. The strip current density and slot field intensity are represented by sum of sinusoidal basis functions with different weightings. Combined with the required boundary conditions, there results in ...

Wen-Hao Chien, 簡文浩

碩士 / 國立臺灣科技大學 / 機械工程系 / 98 / This research mainly investigates the formability of magnesium alloy structural parts of aviation under hot extrusion process. AZ31 and AZ61 magnesium alloys are used to manufacture a similar structural parts of missile empennage under hot extrusion, at the kind of extrusion, the thickness of section varied severely. The formability discussed in this study, include the influence of different materials, temperatures and extrusion speeds on extrusion loads, mechanical ...

Guan-shian Li, 李冠賢

碩士 / 國立中央大學 / 機械工程研究所 / 98 / An experimental investigation of natural convection heat transfer in nine vertical fins having the same frontal area is described. There are four types of fin which are flat plate fin, straight fin, offset strip fin and offset strip increase in length fin with different space, height and length of discrete plates. Flat plate fin has highest heat transfer coefficient and smallest heat transfer rate in all fins. The chief geometric feature for effecting on heat trans...

Hsueh-Chwuan Lu, 呂學權

碩士 / 國立臺灣海洋大學 / 輪機工程系 / 96 /

Nan-Zhe Ye, 葉哲男

碩士 / 國立成功大學 / 機械工程學系 / 89 / ABSTRACT This paper includes two parts. The first one is a three-dimensional numerical thermal-hydraulic study of the slit fin and tube heat exchanger. The second one is to measure the local heat transfer coefficient for the staggered and in-lined fin and tube heat exchangers using the infrared thermovision. In the numerical study of the slit finned-tube heat exchanger： Two different slit numbers (2 and 4) are investigated in detail for the Reyn...

Tai-lung Hsu, 許泰隆

碩士 / 國立臺灣大學 / 海洋研究所 / 88 /

Huang Ta Yi, 黃大益

碩士 / 國立海洋大學 / 機械與輪機工程學系 / 87 / Abstract In the experiment, an induced Wind tunnel was used to measure thermal and hydrodynamic characteristics for the dry coil. Seven difficult plate fin and tube heat exchangers were conducted with row number and fin pitch varied parametrically. During the meas- urements，the water inlet temperature and flow rate were maintained at 60℃ and 5 L/min in the tube side. However, in the fin side, the air frontal velocity was kept in the range from 0.3 to 1.8...

Lee, Wei-Song, 李煒松

博士 / 國立清華大學 / 動力機械工程學系 / 89 / The airside performance of slit fin-and-tube heat exchangers is investigated in this dissertation. The heat transfer performance for slit-fin type is higher than that of plain-fin or wavy-fin type. The friction performance for slit-fin type is lower than that of louver-fin type. Performance data of the slit fin-and-tube heat exchangers with small diameter tubes are very important. Benefits of heat exchangers with smaller diameter tubes include the smaller form drag ...

Hsieh, Yi Chung, 解怡中

碩士 / 元智工學院 / 機械工程學系 / 84 / In the present study, fifteen samples of plate fin heat exchangers with different geometrical parameters, including number of tube rows, fin spacing, and fin thickness are tested. The experiments were carried out in two tunnels with various operating conditions. One is an open-type induced-flow wind tunnel under dry operating conditions. The other is a forced circulation wind tunn...

Wu, Chia-Kan, 吳家凎

碩士 / 大同工學院 / 機械工程學系 / 84 /

Shao-EnChung, 鍾紹恩

碩士 / 國立成功大學 / 機械工程學系碩博士班 / 101 / In this study, the multi-parameter constrained optimization procedure integrating the design of experiments (DOE), full factorial experimental design (FFED), genetic algorithm (GA) and computational fluid dynamics (CFD) is proposed to design three-dimensional porous pin fins in a Rectangular Channel. The Forchheimer-Brinkman extended Darcy model and two-equation energy model are adopted to describe the fluid flow and heat transfer characteristics in the porous me...

Tsung-Cheng Chen, 陳宗成

碩士 / 元智大學 / 機械工程學系 / 102 / This thesis investigates numerically the chip temperature changes caused by the chip locations of an active heatsink module. Under different conditions, the chip location and the main parameters of heatsink (e.g., base thickness, base area, fin thickness) have been analyzed and compared in order to reduce the highest chip temperature. 　　It was found that the cooling effect caused by the thinner fin thickness accompanying chip shifts is the best among the cases studied....

Zhang, Ting-Yao, 張庭耀

碩士 / 明志科技大學 / 機械工程系機械與機電工程碩士班 / 102 / The heat dissipation from the LED light source is critical due to the luminous efficacy is mainly affected by the junction temperature of LED. A well approach to dissipate the heat from the p-n junction is by way of the heat sink of metals. The metals such as aluminum and cooper are often used to be the heat sinks for LED light sources. However, the cost percentage of the heat sink among the whole LED light source is 25-40% which is the key part to increase ...

賴歷農

碩士 / 逢甲大學 / 機械與電腦輔助工程學系 / 102 / This thesis investigates the natural convention in two-dimensional horizontal channels containing vertical porous fin through numerical simulation. Widely used software FLUENT is utilized, and the Darcy-Brinkman-Forchheimer equation is adopted for numerical simulation. The discussed factors include the height ratio, width ratio, Darcy number (Da), and porosity (ε) of porous fin, and the effects of the Rayleigh number (Ra) of the working fluid on heat transfer are ...

Shih-Jian Jhong, 鍾詩堅

碩士 / 國立高雄應用科技大學 / 機械與精密工程研究所 / 101 / High power, high brightness LED light are widely used for the current lighting tools. Compared with the traditional incandescent light, LED light’s long life, energy saving use of low cost, brightness adjustable, low pollution without mercury and high-polluting substances are the advantages. These advantages make the LED light develop quickly in the lighting application and will replace the traditional lighting into the future lighting source. Traditional inc...

You-Zen Lin, 林宥任

碩士 / 國立成功大學 / 航空太空工程學系碩博士班 / 97 / The present study is to extend the work of Jin-Han Liu on heat pipe based solar ventilation device. The main purpose of the study is to discuss the effects of height and number of heat exchanger fins on the ventilation. The approach of study is similar to that used in Liu’s research, which employed simulated solar radiation with heating device. Heat pipes were used to transport the heat from heat absorber to heat exchanger fins and create natural convection vent...

Kun-YehLin, 林昆燁

碩士 / 國立成功大學 / 機械工程學系專班 / 98 / LED, the illuminating light source in energy saving, can save more power and have longer life cycle comparing to traditional light source. In fact, LED is a lighting component with high heat. That high heat of LED can’t be transferred effectively will seriously result in lower illuminating efficiency. Thus, heat transfer function of LED has played an important role in its working efficiency. A fin is a basic heat transfer system of the LED lamp, which is not only e...

Zhong-ZeLeou, 柳仲澤

碩士 / 國立成功大學 / 系統及船舶機電工程學系碩博士班 / 98 / In many practical engineering applications the direct problem is utilized to solve for its physical quantity by substituting the known parameters to the system. In fact, there are many physical values that can not be obtained through direct measurement or calculation in real engineering. However they can be estimated by using inverse design method based on measuring data. These problems are called inverse problems. Inverse problems are also called optimum des...

Chi Kuan-yu, 紀冠宇

碩士 / 中原大學 / 機械工程研究所 / 86 / In the present study 59 samples of fin-and-tube heat exchangers having different type of fin configurations were test. The effects of the number of tubes, fin pitches and tube diameters on the thermal-hydraulic characteristics wereinvestigated. Results are presented as Colburn j factor and fanning friction factor f against Reynolds number ReDc based on the fin collar diameter Dc in the range of 300 to 8,000. It's found that heat transfer performances were strongly rela...

Wei-Han Ho, 何為瀚

碩士 / 國立臺灣大學 / 機械工程學研究所 / 99 / Previous studies show that the lighting quality of LED largely depends on operating temperature. LED devices without thermal management may fail early due to thermal runaway, epoxy degradation, and thermal stress under high-operating temperatures. Piezoelectric fans have emerged as a viable cooling technology for the thermal management of low power electronic devices, owing to their low power consumption, minimal noise emission, and small and configurable dimensions...

Chi-yu,Liu, 劉起宇

碩士 / 國立高雄海洋科技大學 / 輪機工程研究所 / 99 / Abstract The purpose of this study is to investigate the heat transfer as well as friction characteristics of a double pipe heat exchanger with internal fins. A counterflow arrangement is made for the hot water and cold water which serve as the working fluids. Smooth, four-fin, and eight-fin tubes are tested with an inclination angle of 0°, 30°, 60° and 90° in the test. In addition, with a well-stirred design, the hot water is kept around 70 ℃ in the hot bathin...

Chih-Hsin Chang, 張志新

碩士 / 國立臺灣科技大學 / 機械工程系 / 91 / Modern electronics have seen component heat loads increasing since advances in semiconductor process technology enable the industry to pack more performance into smaller packages. Thermal management issues are becoming more complex since while the heat being dissipated from these devices increases, the space available for heat dissipation decreases. This requires that the thermal management system be optimized to attain the highest performance in the given space. Whi...

沈耀明

碩士 / 元智大學 / 機械工程學系 / 85

LI,TIAN-FA, 李添法

碩士 / 國立臺灣師範大學 / 工業教育研究所 / 78 /

YE, WEN-TANG, 葉文堂

碩士 / 大同工學院 / 機械工程研究所 / 80 /

Lin, Run-Xiang, 林潤庠

碩士 / 國立臺灣大學 / 動物學研究所 / 74 /

Wang Sheng-Lung, 王勝龍

碩士 / 國立海洋大學 / 航運技術研究所 / 89 / Fin-and-tube heat exchangers with plain fins or slit fins are tested in this study. The wind tunnel is an open induced type. The effects of the fin pitch, number of row, tube diameter and fin pattern on thermal performance of the air side were experimentally investigated. The results are compared and presented as Colburn j factor and friction factor against Reynolds number based on the tube diameter in the range of 200~1500. It indicates that j factors as well as ...

Yao-ting Chang, 張耀庭

碩士 / 大同大學 / 機械工程學系(所) / 103 / In recent years, with the advent of technology, most portable electronic goods or even larger volume of other 3C products are made in conjunction with the concept of environmental protection. In order to make the most beautiful, highest performance products with minimized material. While manufacturing the products, heat dissipation has been a very important issue. The temperature of the product will get higher when you use it for a long time. The effectiveness of th...

Reiling Fu, 傅瑞麟

碩士 / 國立海洋大學 / 船舶機械工程學系 / 82 / In this study, the thermal characteristics of a copper pinin boiling in a pool of distilled water is investigated experi- entally. Various inclined angles of the fin are tested from veryigh cooling runs temperatures initially and hence the relation-hip between total heat transfer rate and the temprature at thein base is quantified and compared. The effect of the temperature f a...

Hsieh, Wang Chuan, 謝旺全

碩士 / 國立中山大學 / 機械工程研究所 / 82 / A project is proposed to study the condensation behaviors of a vertical Longitudinally-Finned tube by using the Taguchi Method. The Taguchi Method is used to design complex experiments. It requires fewer experiments than those designed by the conven- tional experimental design method , and has very good accuracy. There are many factors involved in the experiments of con...

Yiin, Wen Shin, 尹文新

碩士 / 國立中山大學 / 機械工程研究所 / 82 / To analyse rapidly and efficiently the condensation and heat transfer of the flat-bottom vertical finned tube, and to avoid the traditional complex, time-consuming numerical calculation, this thesis provides a simplified model of vertical axial outside finned, one dimensioned condensation and heat transfer. We will establish a theoretical model, focus on the different geometric...

Huang, Po-Sheng, 黃博聖

碩士 / 國立交通大學 / 機械工程系所 / 103 / In typical applications of electronic cooling, keeping the volume of the cooling module as small as possible is a must due to space confinement; however, as the volume gets smaller, the accommodated area required for heat transfer also suffers appreciably. In the cases where raising the effective heat transfer area is constrained, based on the Newton’s cooling law, to maintain the same heat transfer rate without raising the heat transfer area, we need to raise the he...

Chiou, Hao-Yu, 丘皓宇

碩士 / 國立交通大學 / 電信工程研究所 / 101 / In this thesis, we use waveguide finline architecture to implement the bandpass filter design in W-band. The design of waveguide finline bandpass filter is firstly obtaining the Chebyshev low-pass prototype coefficients corresponds to filter specifications, and transferring these low-pass prototype coefficients into a series of coupling coefficients and the external quality factor. Then, the 3D EM simulation software HFSS is used to simulate single resonator and two...

Shih-bin Chiu, 邱世彬

博士 / 國立成功大學 / 工程科學系碩博士班 / 97 / With the evolution of high speed circuits and higher CPU clock frequency, cooling modules are necessary for electronic systems. However, the configurations of the cooling modules such as heatsinks, heatpipes, may induce EMC problems. In this study, the electromagnetic effect of pin-fin heatsinks is investigated by solving Maxwell equations numerically using a FDTD method and PML boundary conditions. Three types of excitation sources with different operating frequen...

Chun-Jen Wang, 王俊仁

碩士 / 逢甲大學 / 機械工程學所 / 96 / The inverse heat transfer method was adopted in this research to study the optimal three-dimensional fin shape profile of a finned-tube heat exchanger. A modified conjugate gradient method was developed in this research, the method could succeed in obtaining the optimal three-dimensional fin shape profile. The effects of different fin materials and flow velocities were studied with dimensional form;and the effects of different Biot number distributions were also studied...

Lu Yao Wei, 劉曜瑋

碩士 / 遠東技術學院 / 機械研究所 / 93 / The numerical simulation is used to analyze the heat transfer and fluid flow characteristic of staggered fin-and-tube heat exchangers in this study. The circular tubes and elliptic tubes are adopted to be the heat transfer tube, combined with the wavy-types vortex generators, which are used to enhance the heat transfer rate of the heat exchangers. The results show that the circular tube heat exchangers with wavy type vortex generator has the best performances than that...

Kai-Chung Tseng, 曾愷中

碩士 / 國立中興大學 / 機械工程學系所 / 94 / This dissertation is for analysing sink parameters in High Power LED backlight, targeting at application for LCD. Because the stability and lifetime of a semiconductor element can be affected by long time usage or high temperature, the best design of sink was found by using several approaches. Firstly, this experiement measured temperature for sink on LED in a constant temperature environment. Then, CFD was used for simulation and analysis, considering four parameter...

Guan-Hua Fu, 傅冠華

碩士 / 長庚大學 / 機械工程研究所 / 94 / The research uses linear-low-density polyethylene (LLDPE) to proceed rotational molding experiment. In this paper, the application of 3 kind of extended surfaces is investigated. The objective of this work is to achieve enhancement in convective heat transfer to mold exteriors and ultimately to reduce production cycle times. We use thermocouple and temperature indictor to measure inside air temperature and then compare efficiency between all kinds of fin and no fin mol...

Shih-Hang Huang, 黃士航

碩士 / 中原大學 / 機械工程研究所 / 94 / ABSTRACT The main purpose of this study is to build heat sink above heat source, The fluid type from fan is to impinge heat sink to reach thermal dissipation effect. The heat source is usually equipped under the heat sink. Because of the fan hub, the fluid type is non-uniform flow. It only has minimum flow to impinge the place that need thermal dissipation urgently. In view of this, I want to discuss the thermal efficiency of heating dissipation in different heat sink...

Shu-Haur Yeh, 葉書豪

碩士 / 國立臺灣海洋大學 / 機械與輪機工程學系 / 92 /