Limiting Sherwood number of sphere packed beds by electrical method

✍ Scribed by Terukatsu Miyauchi; Tatsuji Kikuchi; Keng-Hua Hsu

• Publisher: Elsevier Science
• Year: 1976
• Tongue: English
• Weight: 598 KB
• Volume: 31
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(76)80035-8

✦ Synopsis

electrical method which applies the analogy between electric field and molecular ditfusioo has been utilized to measure the liiting Sherwood number of packed bed at zero flow rate. This limitiug value appropriate to usual mass transfer operations is found 940 when expressed in terms of the hydraulic diameter and the area averaged mean concentration driving force. When the intluence of velocity profile on the film coefficient is corrected, this Sherwood number compares favonrably with the previously reported value of 747 which is based on the hydraulic diameter and the cup-mixing mean concentration driving force.