Analytical description of falling film absorption

Niccolo Giannetti*, Andrea Rocchetti, Kiyoshi Saito, Seiichi Yamaguchi


    研究成果: Conference contribution

    4 被引用数 (Scopus)


    Absorption represents an opportunity towards clean and efficient energy conversion systems. However, the attempt to characterize heat and mass-transfer performance of this process is still incomplete. The attainment of numerical solutions and empirical correlations can be a time-consuming procedure. Also, their information content is limited to the specific operative circumstances fixed each time as boundary or experimental conditions. Furthermore, the increased complexity of absorption devices makes detailed calculation very difficult or impossible and the physical content obscure. Under this point of view, properly simplified analytical models have obvious advantages. An analytical model for horizontal tube falling film absorbers and a detailed investigation of heat and mass transfer performance are hereby presented. Moreover, by means of the inclusion of a partial wetting model at reduced solution mass flowrates, the characterization of falling film absorbers can be extended to a wider range of operative conditions. The paper performs a parametric analysis of the model in order to study exhaustively the dependence of the solution on geometrical and operative parameters for actual applications' design and control. Different correlated phenomena have been described pointing out how to maximize heat and mass transfer performances of the system.

    ホスト出版物のタイトルACRA 2016 - 8th Asian Conference on Refrigeration and Air-Conditioning
    出版社Asian Conference on Refrigeration and Air Conditioning (ACRA)
    出版ステータスPublished - 2016
    イベント8th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2016 - Taipei, Taiwan, Province of China
    継続期間: 2016 5月 152016 5月 17


    Other8th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2016
    国/地域Taiwan, Province of China

    ASJC Scopus subject areas

    • 制御およびシステム工学
    • 機械工学
    • 凝縮系物理学
    • 電子工学および電気工学


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