Exergy analysis of an ammonia synthesis reactor in a solar thermochemical power system

Date

2002

Authors

Kreetz, Holger
Lovegrove, Keith

Journal Title

Journal ISSN

Volume Title

Publisher

Pergamon-Elsevier Ltd

Abstract

An ammonia-based thermochemical energy storage system is under investigation at the Australian National University. In recent years, one line of research has been the analysis of ammonia synthesis reactors. A two-dimensional numerical reactor model was previously validated with experimental results and was used in this study to compare maximum thermal output with maximum energy output of the reactor investigated. The generic concept of exergy analysis is explained and some thermodynamic background is given. This study shows that a different set of 'optimum' reactor conditions results if optimized for maximum energy output rather than maximum thermal output. Exergy analysis proved to be a useful technique for gathering information about the energy system investigated that would with an energy analysis purely based on first-law analysis not have been accomplished. Results tend to favour either very small diameter reactors to get close to the maximum rate curve or adiabatic reactors as used in industry.

Description

Keywords

Keywords: Ammonia; Electric reactors; Energy storage; Synthesis (chemical); Numerical reactor models; Solar energy; ammonia; solar power; solar power

Citation

Source

Solar Energy

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1016/S0038-092X(02)00024-5

Restricted until

2037-12-31