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Text | Optimal design of compact recuperators for microturbine application | 001
Applied Thermal Engineering 25 (2005) 2054–2071
Optimal design of compact recuperators for microturbine application
Alberto Traverso *, Aristide F. Massardo
Thermochemical Power Group, Dipartimento di Macchine, Sistemi Energetici e Trasporti Universita` di Genova, Genova, Italy
Received 7 October 2004; accepted 30 January 2005 Available online 18 March 2005
This paper presents a new approach for the optimization of microturbine recuperators from the technical and economic standpoints. The procedure proposed has been implemented in the software called CHEOPE (compact heat exchanger optimization and performance evaluation), which considers two types of recuper- ator concept, which have proved to be the most promising for microturbine applications: the furnace-brazed plate-fin type and the welded primary surface type. The general design rules for performance evaluation of gas–gas heat exchangers are summarized and specifically applied to these two types of recuperator. More- over, the cost equation, employed to estimate the capital cost of these types of heat exchanger, is discussed.
With regard to the sizing procedure, a special optimization procedure of the recuperator matrix has been developed, which takes into account several targets in a single multi-objective function: the compactness, the pressure drops and the expected cost of the device.
The tests performed for the validation are presented, and three case studies are illustrated for three dif- ferent microturbine sizes, for a 50 kW, 100 kW and 500 kW machine, respectively.
Ó 2005 Elsevier Ltd. All rights reserved.
Keywords: Compact heat exchanger; Microturbine; Recuperator; Cost equation
* Corresponding author. Tel.: +39 010 353 2463; fax: +39 010 353 2566.
E-mail addresses: firstname.lastname@example.org (A. Traverso), email@example.com (A.F. Massardo).
1359-4311/$ - see front matter Ó 2005 Elsevier Ltd. All rights reserved. doi:10.1016/j.applthermaleng.2005.01.015
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