A Compact Falling Film Absorber

The paper presents a new design of a falling film absorber that could considerably reduce the absorber size without penalizing the vapor and coolant side pressure drops. The proposed design is based on the fundamental characteristics of an efficient absorber design: large liquid-vapor interfacial area and good wetting characteristics. A finite difference scheme is developed to numerically investigate the performance of the design. The results indicate that the proposed design is more compact and efficient than the horizontal tube-type falling film absorber.

[1]  S. Yih,et al.  GAS ABSORPTION INTO WAVY AND TURBULENT FALLING LIQUID FILMS IN A WETTED-WALL COLUMN , 1982 .

[2]  Srinivas Garimella,et al.  A critical review of models of coupled heat and mass transfer in falling-film absorption , 2001 .

[3]  Yong Tae Kang,et al.  Analytical investigation of two different absorption modes: falling film and bubble types , 2000 .

[4]  A. Colburn,et al.  Mass Transfer (Absorption) Coefficients Prediction from Data on Heat Transfer and Fluid Friction , 1934 .

[5]  Yong Tae Kang,et al.  Visualization and model development of Marangoni convection in NH3–H2O system , 1999 .

[6]  Bachir Benzeguir,et al.  Use of a wave model to evaluate falling film absorber efficiency , 1991 .

[7]  G. S. Herbine.  Model of an ammonia-water bubble adsorber , 1995 .

[8]  R. E. Treybal.  Mass-Transfer Operations , 1955 .

[9]  Reinhard Radermacher,et al.  Absorption Chillers and Heat Pumps , 1996 .

[10]  D. Yogi Goswami,et al.  Analysis of a counter-current vapor flow absorber , 2005 .

[11]  H. Perez-blanco.  A model of an ammonia-water falling film absorber , 1988 .

[12]  Keith E. Herold,et al.  Theory of Heat/Mass Transfer Additives in Absorption Chillers , 1999, Advanced Energy Systems.

[13]  T. Tsukada,et al.  Marangoni convection during steam absorption into aqueous LiBr solution with surfactant. , 1991 .

[14]  P. Schweitzer.  Encyclopedia Of Corrosion Technology , 1998 .

[16]  Frank P. Incropera,et al.  Fundamentals of Heat and Mass Transfer , 1981 .

[17]  R. Shah.  Laminar Flow Forced convection in ducts , 1978 .

[18]  B. Wood,et al.  The interfacial turbulence in falling film absorption: effects of additives , 1996 .

[19]  W. Miller,et al.  Vertical-tube aqueous LiBr falling film absorption using advanced surfaces , 1993 .

[20]  Heat and Mass Transfer in a Falling Film Absorber of Ammonia—Water Absorption Systems , 1998 .

[21]  N. E. Wijeysundera,et al.  Performance study of a falling-film absorber with a film-inverting configuration , 2003 .