• 제목/요약/키워드: Computer Cooling System

검색결과 200건 처리시간 0.03초

컴퓨터 내장형 냉각시스템 개발 (Development for Inserted Type Coling System in Computer)

  • 이현용;임선종
    • 대한안전경영과학회:학술대회논문집
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    • 대한안전경영과학회 2009년도 추계학술대회
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    • pp.399-404
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    • 2009
  • The research for computer cooling system has been researched briskly at home and abroad. Most of computer cooling systems are the air cooling method using cooling fan. The air cooling system are most widely used for low cost and easy installation but have limits in cooling. The water cooling system are good for cooling efficiency but bad for installation. This paper presents the developing for cooling system to be inserted in computer using thermoelectric module.

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열전냉각시스템을 이용한 컴퓨터의 발열제어에 관한 연구 (A Study on Control of Heat Generation in Computer using Thermoelectric Cooling System)

  • 오율권;양호동
    • 한국산학기술학회논문지
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    • 제16권1호
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    • pp.43-49
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    • 2015
  • 현재의 컴퓨터는 고성능화, 다기능화, 소형화, 경량화 등의 이유로 인해 기기 내부에서 발생하는 열량이 증가하고 있는 추세이다. 컴퓨터의 성능을 높이고 수명을 연장하기 위해서는 발열을 효과적으로 제어할 수 있어야 한다. 본 연구에서는 열전소자를 이용한 열전냉각시스템을 구성하여 컴퓨터에 설치하였고, 실험을 통해 기존의 공기냉각시스템을 사용한 컴퓨터 내부의 온도분포와 열전냉각시스템을 함께 사용한 컴퓨터 내부의 온도분포를 측정한 후, 이를 비교하여 열전냉각시스템의 발열제어 성능을 알아보고자 하였다. 또한, 열전냉각시스템이 기존의 컴퓨터 냉각시스템을 대처할 수 있는 성능을 낼 수 있는지 예측해 보기 위해서 기존의 냉각시스템을 사용한 컴퓨터와 열전냉각시스템만을 사용한 컴퓨터 내부의 온도분포를 수치해석을 통해 예측하고 비교해 보았다.

외부공기 유입관을 이용한 컴퓨터 냉각시스템의 효율향상에 관한 연구 (A Primary Study on the Enhancement of Efficiency in the Computer Cooling System using Entrance Tube of Outer Air)

  • 김순호;김문환
    • 동력기계공학회지
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    • 제13권4호
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    • pp.56-61
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    • 2009
  • In recent years, since the continuing increase in the capacity in personal computer such as the optimal performance, high quality and high resolution image, the computer system's components produce large amounts of heat during operation. This study analyzes and investigates the ability and efficiency of a cooling system inside a computer by means of central processing unit (CPU) and power supply cooling fan. This research was conducted to enhancement of efficiency of the cooling system inside the computer by making a structure which produces different air pressures in an air inflow tube. Consequently, when temperatures of the CPU and room inside computer were compared with a general personal computer, temperatures of the tested CPU, the room and the heat sink were as low as $5^{\circ}C$, $2.5^{\circ}C$ and $7^{\circ}C$ respectively. In addition to, revolution per minute (RPM) was shown as low as 250 after 1 hour operation. This research explored the possibility of enhancing the effective cooling of high-performance computer systems.

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경계요소법을 이용한 사출성형금형 냉각시스템의 최적설계 (Optimum design of injection molding cooling system via boundary element method)

  • 박성진;권태헌
    • 대한기계학회논문집A
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    • 제21권11호
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    • pp.1773-1785
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    • 1997
  • The cooling stage is the very critical and most time consuming stage of the injection molding process, thus it cleary affects both the productivity and the part quality. Even through there are several commercialized package programs available in the injection molding industry to analyze the cooling performance of the injection molding coling stage, optimization of the cooling system has npt yet been accomplished in the literature due to the difficulty in the sensitivity analysis. However, it would be greatly desirable for the mold cooling system designers to have a computer aided design system for the cooling stage. With this in mind, the present study has successfully developed an interated computer aided design system for the injection molding cooling system. The CAD system utilizes the sensitivity analysis via a Boundary Element Method, which we recently developed, and the well-known CONMIN alforuthm as an optimization technique to minimize a weighted combination (objective function) of the temperature non-uniformity over the part surface and the cooling time related to the productivity with side constranits for the design reality. In the proposed objective function , the weighting parameter between the temperature non-uniiformity abd the cooling time can be adjusted according to user's interest. In this cooling system optimization, various design variable are considered as follows : (i) (design variables related to processing conditions) inlet coolant bulk temperature and volumetric flow rate of each cooling channel, and (ii) (design variables related to mold cooling system design) radius and location of each cooling channel. For this optimum design problem, three different radius and location of each cooling channel. For this optimum design problem, three different strategies are suffested based upon the nature of design variables. Three sample problems were successfully solved to demonstrated the efficiency and the usefulness of the CAD system.

자동차 엔진 냉각시스템의 컴퓨터 시뮬레이션 (Computer Simulation of an Automotive Engine Cooling System)

  • 원성필;윤종갑
    • 한국자동차공학회논문집
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    • 제11권4호
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    • pp.58-67
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    • 2003
  • An automotive engine cooling system is closely related with overall engine performances, such as reduction of fuel consumption, decrease of air pollution, and increase of engine life. Because of complex reaction between each component, the direct experiment, using a vehicle, takes high cost, long time, and slow response to the system change. Therefore, a computer simulation would provide the designer with an inexpensive and effective tool for design, development, and optimization of the engine cooling system over a wide range of operating conditions. In this work, it has been predicted the thermal performance of the engine cooling system in cases of stationary mode, constant speed mode, and city-drive mode by mathematical modelling of each component and numerical analysis. The components are engine, radiator, heater, thermostat, water pump, and cooling fans. Since the engine model is the most important, that is divided into eight sub-sections. The volume mean temperature of eight sub-sections are simultaneously calculated at a time. For detail calculation, the radiator and heater are also divided into many sub-sections like control volumes in finite difference method. Each sub-section is assumed to consist of three parts, coolant, tube with fin, and air. Hence it has been developed the simulation program that can be used in case of design and system configuration changes. The overall performance results obtained by the program were desirable and the time-traced tendencies of the results agreed fairly well with those of actual situations.

데이터센터의 합리적인 환경제어를 위한 공기분배 시스템에 대한 연구 (A Study on Air-distribution method for the Thermal Environmental Control in the Data Center)

  • 조진균;차지형;홍민호;연창근
    • 대한설비공학회:학술대회논문집
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    • 대한설비공학회 2008년도 동계학술발표대회 논문집
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    • pp.487-492
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    • 2008
  • The cooling of data centers has emerged as a significant challenge as the density of IT server increases. Server installations, along with the shrinking physical size of servers and storage systems, has resulted in high power density and high heat density. The introduction of high density enclosures into a data center creates the potential for "hot spots" within the room that the cooling system may not be able to address, since traditional designs assume relatively uniform cooling patterns within a data center. The cooling system for data center consists of a CRAC or CRAH unit and the associated air distribution system. It is the configuration of the distribution system that primarily distinguishes the different types of data center cooling systems, this is the main subject of this paper.

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사무소용 건물의 냉방시스템 운전에 관한 수치적 연구 (A Numerical Study on the Operation of Cooling System in an Office Building)

  • 이승우;민만기
    • 대한설비공학회지:설비저널
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    • 제17권6호
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    • pp.686-695
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    • 1988
  • An algorithm and a computer program were developed for the operational simulation of office building cooling system. Using this computer program, the following results were obtained. ${\bullet}$ There is a critical number of coil rows in AHU with which the cooling system can be operated in maximum efficiency. ${\bullet}$ Energy conservation can be achieved in an office building through TAB(Testing Adjusting and Balancing) of zone air volumes.

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자동차 냉방부하 계산 및 초기 냉방성능 시뮬레이션 (Computer simulation of cooling load and cool-down performance in an automotive air-conditioning system)

  • 오상한;이창원;원성필
    • 설비공학논문집
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    • 제9권3호
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    • pp.364-375
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    • 1997
  • The fundamental theory and technical approach to aid design and development of an automotive air-conditioning system are presented. The evaluation methods for transient cooling load transferred to a passenger compartment and simulation of automotive air-conditioning components are outlined. The structure of the computer program, the experiemntal correlations, and the simulation results are also included. The total cooling load of the white-colored car is reduced upto 5% for that of the black-colored car when the car is running. Using the infrared reflectance glass, we can also obtain 5% reduction of the total cooling load for the common glass.

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주거 건물의 복사냉방시스템 적용에 관한 연구 (A Study on the Application of the Radiant Floor Cooling System in Residential Building)

  • 임재한;여명석;김광우
    • 한국주거학회논문집
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    • 제15권3호
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    • pp.73-82
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    • 2004
  • The objective of this study is to demonstrate the potential of radiant cooling systems using Ondol as an alternative cooling system in residential buildings. For this purpose, computer simulation and model experiments have been performed for the system performance analysis regarding comfort, floor surface condensation, and supply water temperature. The results of this study is the following: In radiant floor cooling system, room air temperatures were maintained within the set temperature range of $\pm$1$^{\circ}C$ without any discomfort condition. And taking into account only the condensation occurrence, it was possible to achieve radiant floor cooling for a period of about 77% of the total cooling period in weather condition of Seoul. The minimum supply water temperature is about 15$^{\circ}C$, so renewable energy system such as ground heat exchange system can be used as an alternative in cooling source. Also, floor surface condensation can be prevented by integrating with the dehumidification system.

3D 프린팅 노즐의 일체형 압출기 쿨링 시스템 개발 (Developing Integrated Compressor Cooler System of 3D Printing Nozzle)

  • 손지환;박현우;하동우;이창우;김진수;강성기
    • 한국생산제조학회지
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    • 제26권1호
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    • pp.6-12
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    • 2017
  • In a large 3D printer when the cooler, which cools the filament, acts in one direction, the area directly exposed to the cooling is cooled to the proper temperature. However, the cooling effect on the opposite area is relatively less. It was found in experiments that filaments with a thickness of over 2 mm exhibit the cooling problem in one directional cooling. Consequently, cooling was performed to prevent the flow-down and to produce firm support leading to an improvement in product quality in extrusion. Further, the lay-up of a 3D printer with five guides combined with a duct was achieved. Analysis showed that the improvement in the cooling effect enables stable extrusion and lay-up and thus, reduces fabrication time.