Kuan-Chung Lai, 賴冠中

碩士 / 中原大學 / 機械工程研究所 / 104 / This paper conducts a study on the heat transfer performances of fin heat sinks with aluminum oxide nanotubes. The main purpose is to experimentally investigate the influence of growing aluminum oxide nanotubes on the heat flux and thermal resistance for plate-fin and pin-fin heat sinks under different convective conditions. First, aluminum oxide nanotubes are grown on aluminum plate-fin heat sinks by using the anodic oxidation method. Then, nanotubes of different len...

Wei-Cheng Tzeng, 曾偉誠

碩士 / 國立臺灣大學 / 漁業科學研究所 / 92 / The price of cultivars are commonly contingent to the flesh quality and the coloration of products, and consequently, commercial feeds are often supplemented with various carotenoids in the intensive culture practice of aquatic organisms, intended for improved culture efficiency and value-added. Literature indicated that carotenoids supplementation did not enhance pigmentation of cultivars, but evidently played important physiological roles. The red striped snapper, ...

Jyun-Ji Lu, 盧俊吉

碩士 / 國立臺北科技大學 / 車輛工程系所 / 102 / The converse piezoelectric effects of piezoelectric material make piezoelectric chip bringing high frequency damping, plastic fan flapping fluid around bringing convection, and then achieve heat dissipation. This study discuss that piezoelectric fan enclose heat sink fins let cryogenic fluid into heat sink efficacious and heat is took away by heat sink fins. Using fluid dynamic software, ANSYS CFD/Fluent, calculate transient flow field in different parameters, it i...

Po-Hsiu Hsiao, 蕭博修

碩士 / 國立中興大學 / 電機工程學系所 / 100 / This thesis investigates the electrical characteristic of FinFET device with different channel length and fin width, and the inversion carrier distribution inside the fin-shaped silicon. The hot carrier effect (HCE), negative bias temperature instability (NBTI), positive bias temperature instability (PBTI), and the time dependent dielectric breakdown (TDDB) are used to study the device performance and reliability. 　　When the channel length is decrease, the threshol...

Yong-Zhi Liu, 劉永智

碩士 / 國立成功大學 / 機械工程學系碩博士班 / 94 / The present study applies the hybrid method of the Laplace transform technique and finite-difference method in conjunction with least-squares scheme and experimental temperature data to predict the heat dissipation and the average convection heat transfer coefficient on CPU heatsink. Due to the thickness of the standard test material is very smaller than its length and width, the one-dimension mathematical model is applied to perform the present inverse analysis....

Tzu-HsiangLin, 林子祥

碩士 / 國立成功大學 / 機械工程學系 / 103 / This study applies inverse method and FLUENT to determine the heat transfer and fluid flow characteristics of plate-fin heat sinks with various enclosures and whether to install the axial-flow fan inside. Using measured data to forecast and analyze the average heat transfer coefficient on the fin in limited space. The inverse method along with the finite difference method and experimental temperature data is applied to determine the heat transfer coefficient. Since t...

Pin-ChunChen, 陳品君

碩士 / 國立成功大學 / 機械工程學系 / 103 / The present study applies the inverse method and computational fluid dynamics commercial software in conjunction with the experimental method to predict the heat transfer and fluid flow characteristics of plate-finned tube heat exchangers. The effects of parameters such as air velocity, fin spacing and tube diameter are examined. Due to the heat transfer coefficient on the fin is non uniform, the fin is divided into several sub-regions. Later, the inverse method appl...

Chuan-Tung Huang, 黃川東

碩士 / 國立臺灣海洋大學 / 機械與輪機工程學系 / 92 / ABSTRACT Nowadays, with continuous development of technology, computers not only are developed towards light and handy, but also can be operated at a high speed. However, the high speed of the central processing units (CPU) increased the heat source from the chip dramatically. In order to decrease the load on computers and prevent any possible heat concentration, how to increase the heat dissipation efficiently is therefore becoming one of the keys to the CPU th...

Chiu, Shih-Liang, 邱士量

碩士 / 國立交通大學 / 電信工程研究所 / 102 / In this thesis, we develop the improved mounting structure of a W-band waveguide finline bandpass filter and realize the bifurcated finline diplexer. The proposed W-band finline bandpass filter are implemented with Rogers RT-Duroud 5880TM substrate with a dielectric constant of 2.2, a thickness of 5mil, and a loss tangent of 0.0009. The design procedures of the waveguide finline filter are briefly described as following. Firstly, decide the center frequency, the fra...

Chia-wen Huang, 黃嘉文

碩士 / 逢甲大學 / 機械工程學所 / 100 / Fin is one of the main cooling devices and is widely applied in electronic components, heat exchangers, and high technique products. The objective of this research is to investigate the natural convection behavior of a two dimensional heated horizontal circular cylinder with longitudinal fins by using the FLUENT software. The effects of fin thickness and length on the heat transfer behavior are studied in this research. 　　The main purpose of this research is to study...

Mu-huo Chen, 陳沐和

碩士 / 逢甲大學 / 化學工程學所 / 100 / In recent years, the optimization designs of micro heat sinks have received widely attention and many methods have been proposed to enhance the heat dispersion efficiency. A commonly used method is based on minimization of entropy generation rate that simultaneously considers the two major factors of heat transfer and fluid friction characteristics in the design. In this paper, we consider the reliability based design optimization (RBDO) of pin-fin heat sinks with inli...

Kuo-ChiangHu, 胡國強

碩士 / 國立成功大學 / 機械工程學系專班 / 100 / The present study applies the Three-dimensional numerical analysis methods to predict the average heat transfer coefficient and heat transfer coefficient under the isothermal situation on a vertical square fin of the two-tube plate finned-tube heat exchangers for in-line arrangements and various fin spacings . And further with compare the numerical inverse scheme with the experimental data in the literature to predict the average heat transfer coefficient and...

Shi-WeiZhan, 詹士緯

碩士 / 國立成功大學 / 機械工程學系碩博士班 / 100 / The present study applies the numerical inverse method and experimental method to predict the average heat transfer coefficient and heat transfer coefficient under the isothermal situation on two kinds of elliptic tubes and plate-finned heat exchangers for two-row staggered arrangements in different fin spacings and air velocities. Due to the non-uniform distribution of the heat transfer coefficient, it must divide the plate fin into several sub-fin regions b...

Shih-TingLai, 賴詩婷

碩士 / 國立成功大學 / 機械工程學系碩博士班 / 100 / The present study applies the numerical inverse methods and computational fluid dynamics commercial software with the experimental to explore a variety of different types of cooling fins, placed in the openings of rectangular shell, the heat transfer characteristics and flow field distribution. Due to the non-uniform distribution of the heat transfer coefficient, the whole plate fin is divided into several sub-fin regions before performing the inverse scheme, and...

Ling-FangHsu, 許玲芳

碩士 / 國立成功大學 / 機械工程學系碩博士班 / 100 / A series of 3-D computational fluid dynamics analyses were carried out to study the thermal-hydraulic characteristics for the in-lined and staggered fin-tube heat exchangers with block type vortex generators mounted behind the tubes. Two types of heat exchangers were investigated in the study: (1) plate fin and tube heat exchangers and (2) rectangular fin and tube heat exchangers. Firstly, the effects of vortex generator span angles (θ) and transverse locatio...

Shin-yi Lin, 林欣怡

碩士 / 國立中山大學 / 機械與機電工程學系研究所 / 99 / Current high power LEDs are used popularly, energy saving can be achieved if the heat transfer performance of a high power LED is increased. Numerical analysis is carried out herein to study the parameters effect on the cooling performance for the heat sinks of the LED projector. The parameters include fin spacing, fin depth, fin thickness, base thickness and flow speed. The numerical results reveal that the parameters of the heat sinks significantly affects the...

Chun-Wei Lin, 林俊瑋

碩士 / 國立高雄應用科技大學 / 機械與精密工程研究所 / 99 / This article uses the Fluent simulation software package to analyze the control of mixed convection in a lid-driven square cavity by using a conductive fin and a heat source (forced and natural convection combined). This study simulates both the flow field and temperature field numerically. The square cavity is constructed with two vertical walls having differential temperature and two adiabatic horizontal walls. The upper lid could be moving continuously in t...

Su, Yang-Bo, 蘇原保

碩士 / 華梵大學 / 機電工程研究所 / 89 / This thesis employs the experimental method to investigate the thermofluid performance of plate and louvered finned-and-tube heat exchangers under frosting conditions. The effects of various geometric and environment parameters on performance of heat exchangers have been examined in detail. The parameters include the number of rows, the temperature of inlet refrigerant, the air flow rate, the relative humidity and the temperature of inlet air. The experimen...

Kuo-Pin Shieh, 謝國品

碩士 / 國立成功大學 / 機械工程學系 / 88 / A numerical study of laminar flow and heat transfer over a muti-row(1-2 rows) and three-dimensional convex-louver fin and tube heat exchanger is presented. The effects of different geometrical parameters, including tube row numbers(1~2 rows), fin pitches(8,10,15 fins/inch), louver angles(15.5、20.0、24.0 ),louver pitches (Lp = 0.953mm、1.588mm)are investigated in detail for the Reynolds number ReH(based on the fin spacing and the frontal velocity)ranging from 100 to 1100...

Yung-Chih Tsao, 曹詠植

碩士 / 建國科技大學 / 自動化工程系暨機電光系統研究所 / 95 / This study used steady-state experiment to discuss the presence of forced convection characteristic of in-channel square pin-fin heat sink at the top bypass. The aluminum alloy square pin-fin heat sink has different relative axial and transverse distances against the square pin-fin (XL = 3.115, 2.073, 1.552; XT = 3.115, 2.073, 1.552). A total of three combinations of relative distance were tested. The range of change for the ratio of top bypass to pin-fin hei...

H. J. Liao, 廖宏儒

碩士 / 建國科技大學 / 自動化工程系暨機電光系統研究所 / 95 / This work experimentally investigated the heat transfer enhancement of jet impingement onto the rotating Square post pins-fins heat sink. Air was used as impinging coolant, while a square pin-fin heat sink with uniformly in-line arrangement was employed. Relevant change parameters include: Heat sink quantity, jet Reynolds number (Re), the relative distance of nozzle-to-fin tip (C/d), the relative of pin-fin width and diameter of the spray nozzle (L/d), the ro...

Shen, Chi-Ju, 沈季儒

碩士 / 國立清華大學 / 動力機械工程學系 / 95 /

Chang,Chao-Chiu, 張兆秋

碩士 / 國立清華大學 / 動力機械工程學系 / 95 / It is not suitable for the rate of heat transfer under natural convection in some situations which can not utilize active cooling technology, so heat transfer enhanced by electrohydrodynamics (EHD) is experimentally investigated in this work. The system of inserting needle electrodes into heat sink can effectively increase the rate of heat transfer due to the corona wind generated by EHD. The polarity of electric field, distance of electrode to pin-fin, height of pi...

賴振田

碩士 / 國立成功大學 / 機械工程學系 / 85 / The thermal-hydraulic characteristics of three different kind of finned-tube heat exchangers (test A, B and C) are studied numerically and experimentally. Tests A and B are circular finned-tubes, while test C is an elliptic finned-tube, which has the same perimeter as that of test B. The flow is assumed to be steady, three-dimensional and laminar. The numerical results for the streamline, isotherm, Nusselt number and fin efficiency are first presented at various fr...

黃紹航

碩士 / 國立清華大學 / 動力機械工程學系 / 92 / ABSTRACT This thesis is studied to the shutter type fin , in order to find out the relation between its surface characteristic and hot convection coefficient, and do a slice of surface of fin differently while cutting into slices, the change of hot convection coefficient, and the impact on its heat-conduction , and then assess the feasibility of making computational analysis with basic theories. The method to study is the method of cooperating with number value to ...

Chia-Yuan Nien, 粘嘉原

碩士 / 中原大學 / 機械工程研究所 / 97 / The thesis presented a study on the optimal analysis of fin-type heat sink using the electronic system design software, Icepak, to obtain the flow field and heat transfer information for the thermal analysis and using the dynamic quadratic (dynamic-Q) optimal method for the subsequent optimal analysis to determine the geometric parameters of the fin-type heat sink. The main tasks of this study were divided into the following three parts: (1)Per the specifications s...

吳兌倩

碩士 / 國立臺灣科技大學 / 機械工程系 / 92 /

Yeh,Yu-Min, 葉裕民

碩士 / 國立臺灣大學 / 海洋研究所 / 83 /

Jla-Lin Li, 李嘉霖

碩士 / 龍華科技大學 / 工程技術研究所 / 96 / As the industrial product becoming smaller, the need for heat dissipation is becoming more stringent. Though the technology advances rapidly, the use of heat sink is still a major method for heat dissipation. This research uses the numerical method to analyze the performance of heat dissipation for heat sink under an impingent jet. A commercial software for heat and flow, CFD-RC, is used for calculation. The distances between rows and columns of fins, fin’s settin...

Hsu, Chin-tsai, 許進財

碩士 / 國立成功大學 / 造船工程學系 / 85 / In acturl engineering problems ,there are many quanties can' t be solved directly or very difficultly to be measurement.In this paper, we apply the"INVERSE PROBLEM" to solve this kind of problem. By introduceing "CONJUGATE GRADIENT METHOD" and the temprature measured by thermal couples ,we will estimated thermal resistance of PLATE FINNED-TUBE HEAT EXCHANGER . In direct problem...

Jean Der Chen, 陳俊德

碩士 / 國立臺北科技大學 / 冷凍與低溫科技研究所 / 89 / This thesis is on a new air-conditioning technology that uses natural convection heat transfer of finned-tube type heat exchanger performance for cooling. Natural convection air-conditioning has some advantages as it uses no electric fan, no fan noise and no fan energy, and it is becoming very popular in Europe. This research thesis has three parts. First, heat transfer performance of finned-tube heat exchanger was studied by changing the fin pitch, n...

Ming-Yen Hsieh, 謝明諺

碩士 / 國立彰化師範大學 / 機電工程學系 / 97 / In this thesis, the physical dimensions and characteristics of the new fin-shaped coplanar-waveguide defected-ground-structure band-pass filters are discussed and investigated. In the thesis, the circuit characteristics of the basic coplanar-waveguide defected-ground-structure are analyzed. Then, I tried to change the physical dimension in order to analysis the change of the circuit characteristics. Due from the reason that the circuit of the fin-shaped s...

Chuang,Hui-Ting, 莊惠婷

碩士 / 國立臺灣科技大學 / 機械工程系 / 94 / A streamlined heat sink assembly, which consists of the cooling fan and the streamlined fins, is designed simultaneously for meeting the thermal task of laptop computers in this research. At first, a systematic scheme including CFD simulation, mockup fabrication, and experimental verification, is established to generate a complex fan. This novel blower (60×60×15mm3), featured with the characteristics from both centrifugal fan and cross-flow fan, provides a sufficient...

Pong-Yuan Chen, 陳鵬遠

碩士 / 國立成功大學 / 機械工程研究所 / 83 / The heat transfer performance of an air-cooled heat exchanger is most heavily dependent on the pattern of fins. To meet the demand for saving energy and resources today, manufactures of heat exchangers are trying to enhance efficiency and to reduce size and weight. For a typical finned-tube exchanger, the thermal resistance is on the air side. As a result, the heat transfer surf...

Chih-Kuo Liu, 劉志國

碩士 / 國立成功大學 / 機械工程研究所 / 82 /

Yu-Tang Tzeng, 曾鈺棠

碩士 / 中原大學 / 機械工程研究所 / 98 / A high power LED lamp module was simulated by the CFD (Computational Fluid Dynamics) Package Fluent/Icepak in the present study. The basic operating parameters of the lamp were determined by comparing the measurement and simulation data. The temperature distributions of the heat sink used in the lamp were simulated and analyzed by varying the fin shapes and materials of the heat sink. The power consumption, light flux and the color temperature of the LED lamp are 6....

Lin, Chun-Pei, 林峻霈

碩士 / 國立清華大學 / 動力機械工程學系 / 99

Shih Hsien Yang, 楊士賢

碩士 / 國立臺灣大學 / 海洋研究所 / 90 /

LIN, KU-LIN, 林谷霖

碩士 / 國立臺灣大學 / 海洋研究所 / 80 /

Liu, Yi-Cheng, 劉奕呈

碩士 / 國立交通大學 / 電信研究所 / 80 /

Min-Jer Lee, 李明哲

碩士 / 國立成功大學 / 機械工程學系碩博士班 / 92 / The paper discusses the electrohydrodynamic (EHD) enhancement through 3-D laminar fluid flow and heat transfer over plate oval-finned heat exchangers. The effects of different tube pitch arrangements (in-lined and staggered) and electrode arrangements (square and diagonal) with different applied voltage (VE = 0KV to 16KV) are numerically investigated in detail for the Reynolds number (based on the fin spacing and frontal velocity) ranging from 100 to 1000. It is f...

Kuo-Liang Wun, 溫國良

碩士 / 雲林科技大學 / 機械工程系碩士班 / 97 / The thesis to discussed the heat transfer performance and pressure drop of compact heat exchangers in forced convection flow. In the previous investigations, when the fin pitch of heat sink with vortex generator was 1mm, the performance of heat transfer and pressure drop was not improved because the vortex generator was unable to result eddy flow. As the fin surface had fully distributed with dimples, its performance was degraded. However, after reduced quantity of ...

Jun-hao Chen, 陳軍豪

碩士 / 國立成功大學 / 機械工程學系碩博士班 / 95 / 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 wet fin for various air speeds. The heat transfer coefficient on this rectangular fin is non-uniform. Thus the whole plate fin is divided into sub-fin regions in order to predict the average heat transfer coefficient on a wet fin....

Li-Shi Liu, 劉立熙

碩士 / 國立成功大學 / 機械工程學系碩博士班 / 95 / 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. The heat transfer coefficient on this rectangular fin is non-uniform. Thus the whole plate fin is divided into several sub-fin regions in order to predict the average heat transfer coefficient. The heat t...

Lu Hsin-Hui, 盧信惠

碩士 / 國立臺灣大學 / 漁業科學研究所 / 90 / Abstract Red striped snapper (Lutjanus erythropterus), the skin of this fish is in bright red and with tasty flesh, and its value in the market is usually high. But red striped snapper grow slowly, in order to enhance their growth shorter the grow-out period, we utilize the Insulin-like growth factors (IGFs) of tilapia procreate from recombinant E. coli add to feed of red striped snapper and to study the red striped snapper growth effect. Experi...

張景學

碩士 / 國立交通大學 / 電信研究所 / 78 /

Yeun-Jong Wu, 吳允中

碩士 / 華梵大學 / 機電工程研究所 / 88 / In this study, the heat transfer and pressure drop performance of flat plate finned tube heat exchangers operating under frosting conditions was investigated by experiments. The experiment was conducted to show the effects of various geometric and environmental parameters on the thermofluid performance of the heat exchangers. The geometric parameters include the fin pitch and the row number. Environmental parameters include inlet air temperature, relative humidity of...

Kuo-Yuan Lee, 李國源

碩士 / 遠東技術學院 / 機械研究所 / 94 / Abstract With the advancement of science and technology, computer becomes lighter, thinner and smaller, and is provided with more functions. This causes increase of the heat produced by a computer. Based on numerical simulation and experiment, this research probes into the performance of separated thermal module in barebones computer. The advantage of a separated thermal module lies in the fact that it can transmit heat through a heat pipe to fins and then discharge he...

Sang-Jung Yang, 楊尚融

碩士 / 國立高雄第一科技大學 / 機械與自動化工程所 / 90 / Recently, the speed of the computer processor is getting faster and faster, which is followed by generation of a great deal of heat. How to eliminate the heat fast and effectively by using the heat conductive media is a topic worth to research. The efficiency of the heat sink depends on material properties and the effective heat surface area for conduction. Forging is the only process to increase the surface area of a heat sink to promote the efficiency of heat...

Fu Ju Hou, 侯福居

碩士 / 國立交通大學 / 電資學院學程碩士班 / 90 / In this thesis, we proposed and demonstrated a novel nano-scale silicon-on-insulator (SOI) FinFET device. The new device features a metallic silicided source/drain and field-induced S/D extensions. For the device fabrication, the patterning of nano-scale Si lines using electron-beam lithography with NEB-22 or hydrogen silsesquioxane (HSQ) resist was examined firstly. Since the HSQ resist has the advantages of high contrast and less line width fluctuation up to 1nm,...