• 제목/요약/키워드: Thermal Sleeve

검색결과 47건 처리시간 0.034초

시공유형에 따른 가공송전선 접속개소의 열적 특성 분석 연구 (The Study on Thermal Properties of Sleeve with Various Defects)

  • 안상현;김병걸;김상수;손홍관;박인표;김성규
    • 한국전기전자재료학회:학술대회논문집
    • /
    • 한국전기전자재료학회 2008년도 추계학술대회 논문집 Vol.21
    • /
    • pp.461-461
    • /
    • 2008
  • According to previous report, aged sleeves for old transmission lines have various defect such as biased installation or corrosion of steel sleeve. These defects occupied almost 50 percent of investigated aged sleeves. The defects have been limited power capacity of transmission line. And it can cause serious problems such as rapid increasing of sag or falling out of overhead conductor from sleeve. This paper study on thermal behavior of sleeve with various defect model. The detailed results were presented in the text.

  • PDF

강 슬리브 파단 직선 슬리브의 장력 및 열적 특성 분석 연구 (Study on Tension and Thermal Properties of Corrosive-fractured Steel Sleeve)

  • 안상현;김병걸;김상수;손홍관;박인표;김성규
    • 한국전기전자재료학회논문지
    • /
    • 제21권11호
    • /
    • pp.1036-1041
    • /
    • 2008
  • According to previous report, aged sleeves of old transmission line showed several defaulted installation patterns, which was biased or corrosive-fractured of steel sleeve installed cases. These defects can cause serious accidents such as rapid increasing of sag or falling out of overhead conductor from sleeves. Consequently, the defects lead to the major power outage. Corrosion of steel sleeve is a typical defect by aging of sleeves. And it occupied almost 25 percent of investigated aged sleeves. This paper studied thermal properties and tension for ACSR conductor in case of fractured steel sleeve model by corrosion. The temperature distribution within overhead conductor has a specific gradient. Thermal properties of splice connectors(sleeve and clamp) showed normal behavior. However, mechanical properties were worse than normal sleeves. The detailed results were presented in the text.

강 슬리브 파단 직선 슬리브의 장력 및 열적 특성 분석 연구 (The Study on Tension and thermal properties of Corrosive-fractured Steel Sleeve)

  • 안상현;김병걸;김상수;손홍관;박인표;김성규
    • 한국전기전자재료학회:학술대회논문집
    • /
    • 한국전기전자재료학회 2008년도 하계학술대회 논문집 Vol.9
    • /
    • pp.104-105
    • /
    • 2008
  • According to previous report, aged sleeves of old transmission line showed several defaulted installation patterns, which is biased or corrosive-fractured of steel sleeve installed cases. The latter case occupied almost 25 percent of investigated aged sleeves. These defects can cause serious accidents such as rapid increasing of sag or falling out of overhead conductor from sleeves. This paper studies thermal properties and tension for ACSR conductor in case of fractured steel sleeve model. The detailed results were presented in the text.

  • PDF

편중 시공된 직선 슬리브의 장력 및 열적 특성 분석 연구 (The Study on Tension and Thermal Properties of Baised Installed Sleeve)

  • 안상현;김병걸;김상수;손홍관;박인표;김성규
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 2008년도 제39회 하계학술대회
    • /
    • pp.1209-1210
    • /
    • 2008
  • According to previous report, aged sleeves for old transmission lines have variable defects such as biased installed case or corrosion of steel sleeve. Biased installed sleeve occupied 20 percent among the investigated aged sleeves. This defect must cause local heating of splice connector and limit power transmission capacity. It even inspire falling out of overhead conductor from sleeves. This paper studies thermal properties and tension for ACSR conductor in case of biased installed sleeve model. The detailed results were presented in the text.

  • PDF

금속관 설비관통부 내화채움 시스템의 슬리브 종류 변화가 내화시험에 미치는 영향 (Effect of Change of Sleeve Type on Fireproofing Performance of Through-Penetration Firestop System on Metallic Pipes)

  • 최홍범;정아영;이형도;박진오;옥치열
    • 한국건축시공학회:학술대회논문집
    • /
    • 한국건축시공학회 2023년도 봄 학술논문 발표대회
    • /
    • pp.327-328
    • /
    • 2023
  • In this paper, the effect of change of sleeve type on fireproofing performance of through-penetration firestop system on metallic pipes was analyzed. As a result, if the material of the sleeve is high in thermal conductivity and thick, a large amount of heat is transferred to the top of the support structure.

  • PDF

환경요소면으로 본 의복의 인간공학적 연구 (II) - 의복의 소매길이와 바지길이가 피부온 및 감각에 미치는 영향 - (An Ergonomics Study of Clothing in an Environmental Aspect - Effects of the Sleeve and Pants Length to Skin Temperature, Thermal Sensation and Feeling of Restriction -)

  • 이전숙
    • 대한가정학회지
    • /
    • 제20권4호
    • /
    • pp.69-81
    • /
    • 1982
  • Eight female subjects aged between 19 and 21 years old were used to compare 4 kinds of sleeves and pants length estimates of the effect of skin temperatures and thermal and restricted sensation. The subjects were exposed to climatic conditions between 23$\pm$$1^{\circ}C$, RH 65$\pm$5% while repose and exercise. Mean skin temperature became higher according to the sleeves and pants length. 4 kinds of shirts and pants always covered back and chest, but skin temperature of these parts are affected by the length of clothes. Thigh, uppar arm and shin which are covered or uncovered according to the lengh of the sleeve and pants, skin temperature of these parts became higher when convered with clothes than when uncovered. The subjects ballots warmer and more restricted sensation after exercise than after repose and when wear the long sleeved shirts and slacks that when wear the no sleeve shirts and short shorts. In conclusion, three quarter sleeved shirts and pedal pushers are recommended for the rest clothes and no sleeved shirts and shorts for the sports wear under the preceding conditions.

  • PDF

시공유형에 따른 ACSR 480Rail 가공송전선 접속개소의 기계적 및 열적 특성 연구 (The Study on Mechanical and Thermal Properties of ACSR 480Rail Conductor with Various Defects)

  • 안상현;김병걸;김상수;손홍관;박인표
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 2009년도 제40회 하계학술대회
    • /
    • pp.1297_1298
    • /
    • 2009
  • According to previous report, aged sleeves for old transmission lines have various defect such as biased installation or corrosion of steel sleeve. These defects occupied almost 50 percent of investigated aged sleeves. These defects can cause serious accidents such as rapid increasing of sag or falling out of overhead conductor from sleeves. Moreover, the defects have been limited power capacity of transmission line. This paper study on thermal behavior of ACSR 480Rail conductor and sleeve with various defect model. The detailed results were presented in the text.

  • PDF

슬리브 시공유형별 기계적 및 열적 가속열화특성 분석 연구

  • 안상현;김병걸;김상수;손홍관;박인표
    • 한국전기전자재료학회:학술대회논문집
    • /
    • 한국전기전자재료학회 2009년도 추계학술대회 논문집
    • /
    • pp.286-286
    • /
    • 2009
  • According to previous report, aged sleeves for old transmission lines have various defect such as biased installation or corrosion of steel sleeve. These defects can cause serious accidents such as rapid increasing of sag or falling out of overhead conductor from sleeves. Moreover, the defects have been limited power capacity of transmission line. This paper study on mechanical and thermal behavior of ACSR $410mm^2$ conductor and sleeve with various defect model. The conductor has been aged artificially for 50 years. The detailed results were presented in the text.

  • PDF