본문 바로가기
HOME> 논문 > 논문 검색상세

논문 상세정보

Building and environment v.114, 2017년, pp.11 - 22   SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Model development of heat/mass transfer for internally cooled dehumidifier concerning liquid film shrinkage shape and contact angles

Dong, Chuanshuai (Department of Building Services Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China ); Lu, Lin (Department of Building Services Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China ); Qi, Ronghui (Department of Building Services Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China );
  • 초록  

    Abstract Moisture affects building materials, the thermal comfort of building occupants and the work performed by them. The plate liquid desiccant air-conditioning system (LDACS) is a promising dehumidification alternative to traditional air-conditioning system for lower energy consumption and less pollution. The shrinkage of the falling film on working plates critically influences the dehumidification performance by affecting the wetting area and film thickness. This paper developed a new model of plate dehumidifier concerning the shrinkage shape and the variable film thickness of falling film. The new model was validated by experiments and compared with existing models. The results indicated that the effect of contact angles on dehumidification performance can be accurately predicted. The moisture removal rates increased rapidly from 2.0 g/kg to 2.56 g/kg as the contact angles decreased from 85° to 5°, while the wetting area increased from 0.145 m 2 to 0.176 m 2 . The distribution of the humidity ratio of process air along flow direction with different contact angles was also simulated. Besides, the average film thickness decreased from 0.952 mm to 0.889 mm as the contact angles decreased from 85° to 5°. The annual electricity consumption of plate LDACS with different contact angles for a typical building in Hong Kong was estimated and analysed by using the newly developed model. The new model can achieve a better predictive accuracy by considering the exact shrinkage shape of falling film and the findings can provide a new insights improving the performance of plate dehumidifiers and other industrial applications, such as vertical condensers, evaporators and absorption towers. Highlights A new model of plate dehumidifier concerning film shape and thickness is developed. The effect of contact angle on film shape and dehumidification performance is studied. An experimental setup with two comparative channels is conducted. The energy consumption of desiccant cooling system in a typical building is simulated.


  • 주제어

    Liquid desiccant air-conditioning system .   Contact angle .   Shrinkage shape .   Wetting area .   Dehumidification performance.  

 활용도 분석

  • 상세보기

    amChart 영역
  • 원문보기

    amChart 영역

원문보기

무료다운로드
  • 원문이 없습니다.

유료 다운로드의 경우 해당 사이트의 정책에 따라 신규 회원가입, 로그인, 유료 구매 등이 필요할 수 있습니다. 해당 사이트에서 발생하는 귀하의 모든 정보활동은 NDSL의 서비스 정책과 무관합니다.

원문복사신청을 하시면, 일부 해외 인쇄학술지의 경우 외국학술지지원센터(FRIC)에서
무료 원문복사 서비스를 제공합니다.

NDSL에서는 해당 원문을 복사서비스하고 있습니다. 위의 원문복사신청 또는 장바구니 담기를 통하여 원문복사서비스 이용이 가능합니다.

이 논문과 함께 출판된 논문 + 더보기