Dynamic hold-up of packings with vertical walls

The packings with vertical walls and especially the 'honeycomb' packings ar e distinguished for their lowest pressure drop per one transfer unit. Yet t here are no universal relationships for calculating the dynamic hold-up of that type of packings. The present work proposes equations for calculating this value under and over the loading point, derived on the basis of the ex perimental data for 11 arranged packings of that type with different form a nd dimensions. (C) 2000 Elsevier Science S.A. All rights reserved.