CFD Modeling of Bayonet Type High Temperature Heat Exchanger and Chemical Decomposer With Different Packed Bed Designs

Authors

Vijaisri Nagarajan, University of Nevada, Las VegasFollow
Valery Ponyavin, University of Nevada, Las VegasFollow
Yitung Chen, University of Nevada, Las VegasFollow
Milton E. Vernon, Sandia National LaboratoriesFollow
Anthony Hechanova, University of Nevada, Las VegasFollow

Document Type

Conference Proceeding

Publication Date

11-11-2008

Publication Title

ASME International Mechanical Engineering Congress and Exposition, Proceedings

Publisher

ASME

Volume

8 PART A

First page number:

887

Last page number:

894

Abstract

The present work is concerned with use of bayonet type high temperature heat exchanger as silicon carbide integrated decomposer (SID) which produces sulfuric acid decomposition product - sulfur dioxide. The product can be used within the sulfur iodine thermo-chemical cycle portion of the hydrogen production process. The chemical decomposition occurs in packed bed area of the decomposer. The engineering design of the packed bed is very much influenced by the structure of the packing matrix, which is governed by the shape, dimensions and the loading of the constituent particles. Optimum design of catalyst pellet in terms of shape configuration, packing method and available surface area can promote catalytic activity and the prevailing transport properties of the system. Knowledge of the underlying factors should enable designers to engineer the optimum design for a given system with prescribed conditions. The investigations of fluid flow and the arrangement of cylindrical and spherical pellets in packed bed are presented in the paper.

Keywords

Computational fluid dynamics; Decomposition (Chemistry); Heat exchangers; Hydrogen as fuel

Disciplines

Chemical Engineering | Energy Systems | Mechanical Engineering | Oil, Gas, and Energy

Language

English

Comments

Conference held: Seattle, Washington, USA, November 11–15, 2007

Permissions

Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.

Repository Citation

Nagarajan, V., Ponyavin, V., Chen, Y., Vernon, M. E., Hechanova, A. (2008). CFD Modeling of Bayonet Type High Temperature Heat Exchanger and Chemical Decomposer With Different Packed Bed Designs. ASME International Mechanical Engineering Congress and Exposition, Proceedings, 8 PART A 887-894. ASME.