Publication

Liquid-side mass transfer characteristics of a structured packing

Urs von Stockar
1995
Journal Articles

Abstract

We present exptl. results on the liq.-side mass transfer characteristics of a structured packing (Mellapak). We have measured the product of the liq.-side mass transfer coeff. kL and the effective specific area ae by the NTU-HTU method in a column of 0.295 m internal diam. The column was operated in counter-current, O from a satd. water stream being stripped into air. In order to elucidate the effect of the specific area, we report results on 3 different packing types of specific geometric areas of 125, 250 and 500 m3/m2 (Mellapak 125.Y, 250.Y and 500.Y, resp.). The dependence of kLae on liq. load and gas velocity is qual. similar to that of random packings. Quant., however, the values of kLae for the structured packings studied in this work are higher than the values reported in the literature for random packings of the same specific geometric area under the same operating conditions. [on SciFinder (R)]

Official source

https://infoscience.epfl.ch/entities/publication/75b7ddcb-1a33-45a2-b29d-283ffa5becb0

About this result

This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

Urs von Stockar
1995
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/75b7ddcb-1a33-45a2-b29d-283ffa5becb0

About this result

Related concepts (25)

Sphere packing

In geometry, a sphere packing is an arrangement of non-overlapping spheres within a containing space. The spheres considered are usually all of identical size, and the space is usually three-dimensional Euclidean space. However, sphere packing problems can be generalised to consider unequal spheres, spaces of other dimensions (where the problem becomes circle packing in two dimensions, or hypersphere packing in higher dimensions) or to non-Euclidean spaces such as hyperbolic space.

Close-packing of equal spheres

In geometry, close-packing of equal spheres is a dense arrangement of congruent spheres in an infinite, regular arrangement (or lattice). Carl Friedrich Gauss proved that the highest average density – that is, the greatest fraction of space occupied by spheres – that can be achieved by a lattice packing is The same packing density can also be achieved by alternate stackings of the same close-packed planes of spheres, including structures that are aperiodic in the stacking direction.

Atomic packing factor

In crystallography, atomic packing factor (APF), packing efficiency, or packing fraction is the fraction of volume in a crystal structure that is occupied by constituent particles. It is a dimensionless quantity and always less than unity. In atomic systems, by convention, the APF is determined by assuming that atoms are rigid spheres. The radius of the spheres is taken to be the maximum value such that the atoms do not overlap.