Numerical modeling of compact high temperature heat exchanger and chemical decomposer for hydrogen production

Autor:	Valery Ivanovich Ponyavin, Anthony Hechanova, Merrill Wilson, Yitung Chen
Rok vydání:	2008
Předmět:	Fluid Flow and Transfer Processes Materials science Moving bed heat exchanger Heat spreader Plate heat exchanger Micro heat exchanger Thermodynamics Plate fin heat exchanger Mechanics Heat sink Condensed Matter Physics Heat capacity rate Shell and tube heat exchanger
Zdroj:	Heat and Mass Transfer. 44:1379-1389
ISSN:	1432-1181 0947-7411
DOI:	10.1007/s00231-008-0372-x
Popis:	The present study addresses fluid flow and heat transfer in a high temperature compact heat exchanger which will be used as a chemical decomposer in a hydrogen production plant. The heat exchanger is manufactured using fused ceramic layers that allow creation of channels with dimensions below 1 mm. The main purpose of this study is to increase the thermal performance of the heat exchanger, which can help to increase the sulfuric acid decomposition rate. Effects of various channel geometries of the heat exchanger on the pressure drop are studied as well. A three-dimensional computational model is developed for the investigation of fluid flow and heat transfer in the heat exchanger. Several different geometries of the heat exchanger channels, such as straight channels, ribbed ground channels, hexagonal channels, and diamond-shaped channels are examined. Based on the results, methods on how to improve the design of the heat exchanger are recommended.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f36894fbf547da06be0b3a259426b748 https://doi.org/10.1007/s00231-008-0372-x Zobrazit plný text záznamu Full text from SpringerLink