Mass transfer kinetics of dehumidification in an adsorption bed during close air circulation
Mass transfer kinetics of dehumidification in an adsorption bed during close air circulation have been investigated utilizing silica and 4A molecular sieves.Mass transfer coefficients of dehumidification and equilibrium humidity on adsorbent surfaces are determined by fittings of humidity derivatives.Mass transfer coefficients of dehumidification change primarily with operation conditions and vary insignificantly with adsorbent type,which confirms determinant effects of external diffusion on adsorption.Mass transfer coefficients almost increase linearly with increase in Reynold's number under laminar flow.