Title: Exergoeconomic optimisation of a Kalina cycle for power generation

Authors: Jose A. Borgert, Jose A. Velasquez

Addresses: Departamento de Engenharia Mecanica, Pontificia Universidade Catolica do Parana - PUCPR, Rua Imaculada Conceicao, 1155, 80215-901 Curitiba, PR, Brazil. ' Departamento de Engenharia Mecanica, Pontificia Universidade Catolica do Parana - PUCPR, Rua Imaculada Conceicao, 1155, 80215-901 Curitiba, PR, Brazil

Abstract: It is shown that the use of an ammonia-water Kalina absorption power cycle as a bottoming cycle for a cogeneration plant may result in an economic advantage. This cycle was optimised using as a goal function the exergoeconomic unitary cost of the electricity produced by both the cogeneration plant and the absorption cycle. The Zoutendijk method of feasible directions was used for this optimisation. The results obtained show that the generated net power increases in 3.26% and the unitary cost of electricity diminishes in 3.14%.

Keywords: exergoeconomic optimisation; exergy analysis; Kalina absorption power cycle.

DOI: 10.1504/IJEX.2004.004730

International Journal of Exergy, 2004 Vol.1 No.1, pp.18 - 28

Published online: 14 Jun 2004 *

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