• 제목/요약/키워드: 밀폐형 냉각탑

검색결과 5건 처리시간 0.011초

베어관을 이용한 30RT급 하이브리드 밀폐형 냉각탑의 성능특성에 관한 실험적 연구 (An Experimental Study on Performance Characteristic of 30RT Closed-Type Hybrid Cooling Tower using Bare Tube)

  • 전철호;이호생;문춘근;김재돌;윤정인
    • 한국마린엔지니어링학회:학술대회논문집
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    • 한국마린엔지니어링학회 2005년도 전기학술대회논문집
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    • pp.1096-1101
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    • 2005
  • In this study, the experiment of thermal performance about closed-type hybrid cooling tower was conducted. A closed type cooling tower is a device similar to a general cooling tower, but with cooling tower replaced by a heat exchanger. The test section for this experiment has the process that the cooling water flows from top part of heat exchanger to bottom side in the inner side of tube, and spray water flows gravitational direction in the outer side of it. Air contacts of tube outer side are counterflow. The heat transfer pipe used in this experiment is a bare type tube having an outside diameter of 15.88mm. In this experiment, heat performances of the cooling tower are calculated such as overall heat transfer coefficient of between the process fluid and air, cooing capacity and pressure drop.

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밀폐형 냉각탑의 열성능 특성에 관한 실험적 연구 (Thermal Performance Characteristics of Closed-Wet Cooling Tower)

  • ;김은필;문춘근;윤정인
    • 동력기계공학회지
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    • 제9권2호
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    • pp.88-92
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    • 2005
  • The experiment of thermal performance about closed-wet cooling tower was conducted in this study. A closed cooling tower is a device similar to a general cooling tower, but with cooling tower replaced by a heat exchanger. The test section for this experiment has the process that the cooling water flows from the top of the heat exchanger to the bottom side in the inner part of the tube, and spray water flows in the gravitational direction in the outer side. Air comes in direct contact with the spray water at the outer side of the tube while passing from the lower the upper part having a counterflow to the spray water. The heat transfer pipe used in this experiment is a bare-type tube having an outer diameter of 15.88mm. The heat exchanger is consisted of seven rows and fifteen columns. In this experiment, thermal performance of the cooling tower is derived from overall heat transfer coefficients between the process fluid and sprayed water and volumetric overall mass transfer coefficient between sprayed water and air.

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밀폐형 냉각탑용 열교환기의 성능에 영향을 미치는 인자에 관한연구 (A Study on the Factors of affecting the Heat Exchanger for Closed Cooling Tower)

  • 이상식;유성연;김진혁;유해성;박형준
    • 대한설비공학회:학술대회논문집
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    • 대한설비공학회 2008년도 동계학술발표대회 논문집
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    • pp.250-255
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    • 2008
  • Most high-rise building and large building require a cooling tower. Closed cooling tower is a low noise and the high efficiency. also Closed cooling tower is available for four season. Performance of Closed cooling tower is judged by heat transfer coefficient. In this study, Heat transfer coefficient is compared with air velocity, spray flow, heat exchanger type.

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밀폐형 냉각탑용 열교환기에서의 물질전달 (Mass Transfer from Heat Exchanger for Closed Wet Cooling Tower)

  • 유성연;김진혁;한규현;김주상;유해성;박형준
    • 대한설비공학회:학술대회논문집
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    • 대한설비공학회 2009년도 하계학술발표대회 논문집
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    • pp.1119-1122
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    • 2009
  • The use of cooling towers in the air conditioning systems of buildings is increasing. In closed wet cooling towers, the heat transfer between the air and surface tubes can be composed of the sensible heat transfer and the latent heat transfer. The latent heat transfer is affected by the air and spray water. This study provides a designing methodology of heat exchanger for closed wet cooling tower. The correlation equation was derived to interpret the mass transfer coefficient based on the analogy of the heat and mass transfer and the experimental results. The results from this correlation equation showed fairly good agreement with experimental data.

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수 이젝터를 이용한 밀폐형 진공탱크내의 온도저감 특성 (Characteristics of Cooling Down in the Enclosed Vacuum Tank by Water Driving Ejector)

  • 김세현;신유식;배강열;이윤환;정효민;정한식
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2003년도 추계학술대회
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    • pp.700-705
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    • 2003
  • The general cooling tower is a device for making a cooling water in refrigerant condensers or industrial process heat exchangers. The present cooling tower have defects with noises, complicated structure and environmental problems. In this paper, we constituted a new water cooling system by using a evaporating latent heat in an enclosed tank, and this system is consisted of an enclosed vacuum tank and water driving ejector system. Several experimental cases were carried out for improvement methods of high vacuum pressure and water cooling characteristics. The ejector performance was tested in case of water temperature variations that flows in the ejector. Based on the vacuum pressure by water driving ejector, the water cooling characteristics were investigated for the vaporized air condensing effects.

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