The effect of condenser heat transfer on the energy performance of a plate heat pipe solar collector

• Tipo: Artigo em Revista Científica Internacional
• Data: 2005

Autores

Facao, J (Autor) Outra; Armando C. Oliveira (Autor) FEUP

Revista

Título: International Journal of Energy Research

Vol. 29

Páginas: 903-912

ISSN: 0363-907X

Editora: Wiley-Blackwell

Indexação

ISI Web of Knowledge - 3 Citações

ISI Web of Science

Scopus - 3 Citações

Outras Informações

ID Authenticus: P-000-23X

DOI: 10.1002/er.1114

Abstract (EN): For a novel prototype solar collector, using a plate heat pipe, condenser heat transfer was analysed in detail. The condenser has the shape of a rectangular channel. Flow and heat transfer of water in the rectangular channel was modelled and the heat transfer coefficient assessed, using the Fluent code. Under typical operating conditions a mixed convection situation occurs. The channel is inclined and heating is through one wall only (upper channel surface). The range of temperature differences considered was similar to the one verified under real operating conditions, covering a wide range of Grashof numbers. Results showed that the Nusselt number is significantly higher than the one for forced convection in a rectangular channel with fully developed boundary layers. In order to enhance heat transfer, a modification to the rectangular channel was analysed, using baffles to improve flow distribution and increase velocity. The effect of this modification on collector energy performance (efficiency) was assessed. Copyright (c) 2005 John Wiley & Sons, Ltd.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10