• 제목/요약/키워드: 히트파이프

검색결과 337건 처리시간 0.035초

가변전열 히트파이프의 저온 시동특성에 관한 연구 (A study on the characteristics of a frozen start up for a variable conductance heat pipe)

  • 홍성은;강환국;조광철
    • 대한설비공학회:학술대회논문집
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    • 대한설비공학회 2006년도 하계학술발표대회 논문집
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    • pp.339-345
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    • 2006
  • This these was conducted to investigate tile characteristics of a frozen start up for a VCHP which has water as a working fluid and Nitrogen as a non-condensible gas. The tested heat pipe was made of a copper tube with the outer diameter of 12.7 mm, the length of 340 mm, and the sintered metal wick had the thickness of 0.7 mm. This experiment was conflicted under the thermal load, inclined angle and cooling conditions.

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히트파이프를 이용한 구동모터에 대한 냉각기술에 관한 연구 (Cooling Method of the Actuating Motor Using Heat Pipe)

  • 노상현;이동렬
    • 대한설비공학회:학술대회논문집
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    • 대한설비공학회 2006년도 하계학술발표대회 논문집
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    • pp.1168-1173
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    • 2006
  • This research is to verify the cooling effect of the acting surface on the rotary motor using heat pipe and conventional cooling fan. In order to show the cooling performance of the rotary motor and heat pipe with the fin-typed heat sink, the surface temperature of the motor and condenser was measured in real time. The experiments were also conducted as for not only cooling device installed with heat pipe only, but with heat pipe and conventional cooling fan simultaneously.

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증발부 내경 변화에 따른 진동형 히트파이프의 온도 거동에 관한 연구 (A Study on temperature behavior of pulsating heat pipe with different diameter in evaporator)

  • 김지훈;박철우;;김대중
    • 한국가시화정보학회지
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    • 제17권1호
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    • pp.10-18
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    • 2019
  • In this study, the temperature behavior of Pulsating Heat Pipe (PHP) according to the diameter change were studied by limiting the diameter change to only the evaporator. To investigate operation of PHP in various heat input, heat input power was increased from 10 to 120 W. The results show operation can be divided into 3 regimes by temperature behavior. Thermal resistance was increased before start-up and decreased with increasing heat input. At 110 W heat input, thermal conductivity of 2 mm PHP was 8 .times higher compare to thermal conductivity of copper. Further, to investigate details of temperature behavior in higher heat input, FFT analysis was conducted. Based on the results, when the deviation of peak frequency in each section is lowest, the thermal resistance has lowest value.

개방형 구조의 진동형 히트파이프의 응축부 길이에 따른 추력 및 유동 가시화 (Thrust and Flow Visualization according to Length of Condenser Section of Open Pulsating Heat Pipe)

  • 손민재;최종욱
    • 한국가시화정보학회지
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    • 제21권3호
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    • pp.57-64
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    • 2023
  • An open pulsating heat pipe operates continuously by inflow and outflow fluids through an open-type condenser. The open pulsating heat pipe is a device capable of obtaining the thrust due to the variation of internal pressure during phase change. Therefore, the open pulsating heat pipe is a suitable device to move fluids if the heat source such as waste heat exists. Many numerical studies have not been sufficiently conducted on the open pulsating heat pipe. In this study, the numerical analysis of the open pulsating heat pipe is performed according to the length of the condenser section. The OpenFOAM software is used to obtain the thrust and the flow visualization for the open pulsating heat pipe.