자연환기시스템의 외기도입 환기캡 표면의 결로해석
(주)코리아스칼라
- 최초 등록일
- 2016.04.01
- 최종 저작일
- 2009.06
- 9페이지/ 어도비 PDF
- 가격 4,000원
* 본 문서는 배포용으로 복사 및 편집이 불가합니다.
서지정보
ㆍ발행기관 : 한국실내환경학회
ㆍ수록지정보 : 한국실내환경학회지 / 6권 / 2호
ㆍ저자명 : 한화택, 정영균, 이성환
영어 초록
In this paper, it is intended to investigate the condensation characteristics of a supply vent cap, which is designed and developed for natural ventilation systems for ondol heating spaces. Numerical simulations are conducted using a CFD package to analyze airflow and thermal conditions around the vent cap. Temperature and humidity distributions are obtained to predict condensation on the surface, depending on the material properties. As the thermal conductivity decreases, decreased is the condensation surface area. The thermal conductivity of the vent cap is found to be less than 1 W/mK in order to prevent condensation under the winter design condition of Seoul. An experimental technique is introduced to visualize condensation on surfaces using water-absorbing mud film. Analytical results are in good agreement with experimental observations. Discussion are also included for the thermal comfort and flow characteristics around the vent cap observed by the flow visualization and temperature visualization studies.
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