• 제목/요약/키워드: thermoelectric.

검색결과 884건 처리시간 0.03초

유전자(DNA)증폭 온도 사이클 시스템에 열전소자 활용을 위한 연구 (Application of thermoelectric module to DNA amplifying thermal cycle system)

  • 조재설;정세훈;남재영;최재붕;김영진
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2004년도 춘계학술대회
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    • pp.210-215
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    • 2004
  • : A DNA analysis system based on fluorescence analysis has to have a DNA amplifying thermal cycle system. DNA amplification is executed by the temperature control. Accuracy of fluorescence analysis is influenced by the temperature control technology. For that reason, the temperature control is core technology in developing the DNA analysis system. Therefore, the objective of this paper is to develop the hardware to apply thermoelectric module to the DNA amplifying thermal cycle system. In order to verify the developed hardware for controlling the temperature of thermoelectric module, a DNA amplifying thermal cycle test was performed. From the test, the developed hardware controlled the temperature of thermoelectric module successfully. Therefore, it is expected that the developed hardware can be applied to the DNA amplifying thermal cycle system.

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고온에서의 La0.75Ba0.25MnO3 세라믹스의 전기전도 및 열전특성 (High-Temperature Electrical Transport and Thermoelectric Properties of La0.75Ba0.25MnO3 Ceramics)

  • 정우환
    • 한국재료학회지
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    • 제18권4호
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    • pp.175-180
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    • 2008
  • In this study, the thermoelectric power and resistivity of the perovskite manganite $La_{0.75}Ba_{0.25}MnO_3$ were investigated in the temperature range 300K-1200K. The electrical resistivity and thermoelectric power indicate a transport mechanism dominated by adiabatic small-polaron hopping. The power factor increases from $2{\times}10^{-6}W/mK^2$ to $1{\times}10^{-5}W/mK^2$ as to the temperature increases from 400K to 1200K, which indicates that the compound is highly feasible as a thermoelectric material at high temperatures.

열전발전용 Bi-Te Module에서 미끄럼에 따른 열응력 완화 특성 (A Characteristic of Fluid-Assisted Sliding on Stress Relaxation of Bi-Te Modules in Thermoelectric Generation System)

  • 우병철;이희웅
    • 대한전기학회논문지:전기물성ㆍ응용부문C
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    • 제52권1호
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    • pp.12-18
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    • 2003
  • Recently the research for utilization of waste heat produced from electric power plants, casting factories, heat treating factories or commercial building are being afforded by the need for energy saving. The objective of this study is to develop a thermoelectric generation system which converts unused energy from close-at-hand sources such as garbage incineration heat and industrial exhaust etc. into electricity. This paper presents a thermoelectric technology on a optimum system design method and efficiency and cost effective thermoelectric element on order to extract the maximum power output from energy conversion of waste energy. It is shown that the longitudinal stresses of module contacted with two point constrained AI tubes could be released more than those with a one-point constrained.

LED터널등 모듈의 폐열활용을 위한 열전소자의 발전 성능 분석 (Analysis of the Thermoelectric Devices' Power Generation Performance for Utilizing the Waste Heat of LED Tunnel Lighting Module)

  • 정지영;허인성;이세일;김명호;유영문
    • 조명전기설비학회논문지
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    • 제29권8호
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    • pp.1-6
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    • 2015
  • In this paper, we propose the LED(Light-Emitting-Diode) emergency lighting in a tunnel by using the thermoelectric devices. To achieve high generated power, thermoelectric device should be have high Seebeck coefficient and small contact area. Also, we reveal that a moderate heatsink required for high generated power. From the waste heat of LED tunnel lighting module (25W), the generated power was 0.062W by thermoelectric device, and it could illuminate for 1hour after charge the battery of emergency lighting during about 101hours.

고분자 필름의 두께변화에 따른 Bi-Te계 열전모듈의 열분포 특성 (Thermal Distribution of Bi-Te Thermoelectric Module with the thickness of Polymer Sheet)

  • 변종보;김봉서;박수동;이희웅;김영수
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2005년도 하계학술대회 논문집 Vol.6
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    • pp.85-86
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    • 2005
  • In case of attaching thermoelectric module and heat source, the polymer sheet is attached on the $Al_2O_3$ plate, which is cooling side of thermoelectric module, in order to enhance mechanical safety of the system. It is impossible to calculate the exact distribution of temperature and flow pattern of inner gap of thermoelectric module. Therefore CFD analyses was executed to determine the thermo-fluid phenomena and distribution by Fluent. As the result of these analyses, heat transfer was dominated by conduction and the difference of temperature was linear distribution according to the thickness of polymer sheet.

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고분자 필름의 두께변화에 따른 Bi-Te계 열전모듈의 열분포 특성 (Thermal Distribution of Bi-Te Thermoelectric Module with the thickness of Polymer Sheet)

  • 변종보;김봉서;박수동;이희웅;김영수
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2005년도 제36회 하계학술대회 논문집 B
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    • pp.1675-1677
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    • 2005
  • In case of attaching thermoelectric module and heat source, the polymer sheet is attached on the $AL_{2}O_3$ plate, which Is cold and hot side of thermoelectric module, in order to enhance mechanical safty of the system. It is impossible to calculate the exact distribution of temperature and flow pattern of inner gap of thermoelectric module. Therefore CFD(Computational Fluid Dynamics) analysis was executed to determine the thermo-fluid phenomena and distribution by Fluent. As the result of these analysis, heat transfer was dominated by conduction and the difference of temperature was linear distribution according to the thickness of polymer sheet.

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MPC 공정에 의한 열전반도체 분말의 성형 및 미세조직 (Consolidation of Thermoelectric Semiconductor Powder by MPC and Their Microstructure)

  • 한태봉;홍순직
    • 한국소성가공학회:학술대회논문집
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    • 한국소성가공학회 2008년도 춘계학술대회 논문집
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    • pp.525-527
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    • 2008
  • N-Type $SbI_3$-doped $95%{Bi_2}{Te_3}-5%{Bi_2}{Se_3}$ compounds were prepared by a gas atomization and Magnetic Pulsed Compaction process. The dynamic recrystallization and thermoelectric properties of the MPCed bulks with consolidation temperatures and times were investigated by a combination of microscopy, XRD and thermoelectric property testing. The microstructure of MPCed bulk shows homogeneous and fine distribution through consolidated bulks due to dynamic recrystallization during hot MPC. This research presented the challenges toward the successful consolidation of thermoelectric powder using magnetic pulsed compaction (MPC).

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열전 냉각기의 최적 설계를 위한 열전달 해석 (Heat Transfer Analysis for Optimum Design of a Thermoelectric Cooler)

  • 김제익;박찬형;강용태;최창균
    • 설비공학논문집
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    • 제15권11호
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    • pp.889-894
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    • 2003
  • The objectives of this study are to present a proper mathematical model for a thermoelectric cooler equipped with the spacer and to investigate the effect of its geometries by heat transfer analysis. In order to enhance the efficiency of the thermoelectric cooler, the spacer is inserted between TEM (thermoelectric module) and cold plate. The theoretical results show that the COP (coefficient of performance) increases nonlinearly as high as 0.63 with increasing the depth of spacer and the depth of TEM and with decreasing the area of insulator.

고분자 필름의 두께변화에 따른 열전소자의 출력 특성변화에 관한 연구 (Research on the Output Characteristic of Thermoelectric Module according to the thickness variation of Polymer Pad)

  • 장호성;김재정;김인관;김영수
    • 대한설비공학회:학술대회논문집
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    • 대한설비공학회 2006년도 하계학술발표대회 논문집
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    • pp.976-981
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    • 2006
  • In case of attaching thermoelectric module and heat source, the polymer pad is attached on the $Al_2O_3$ plate, which is cooling side of thermoelectric module, in order to enhance mechanical safety of the system. It is impossible to calculate the exact distribution of temperature and flow pattern of inner gap of thermoelectric module. Therefore CFD(Computational Fluid Dynamics) analysis was executed to determine the thermo-fluid phenomena and distribution by Fluent. As the result of these analysis, heat transfer was dominated by conduction and the difference of temperature was linear distribution according to the thickness of polymer sheet.

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열전소자를 활용한 하이브리드 제습시스템의 구성에 관한 기초적 연구 (A Fundamental Study on the Composition for the Hybrid Dehumidification System Using Thermoelectric Device)

  • 류성룡;염호진;이현제;조현
    • 한국건축친환경설비학회 논문집
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    • 제12권6호
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    • pp.618-626
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    • 2018
  • In this paper, the hybrid dehumidification system using thermoelectric device is based on the idea of utilizing waste heat from the heat dissipation side of thermoelectric device as a heat source to regenerate chemical desiccant. We would like to apply this system to spaces required dehumidification due to continuous moisture generation or local high humidity in the houses. And, we want to confirm the possibility of developing the hybrid dehumidification system that combines passive dehumidification using chemical desiccant with active dehumidification using thermoelectric device.