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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Horizontal tube bundle falling film distiller for ammonia-water mixtures

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Autor(es):
Zavaleta-Aguilar, E. W. [1, 2] ; Simoes-Moreira, J. R. [1, 2]
Número total de Autores: 2
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, IEE, BR-05508900 Sao Paulo, SP - Brazil
[2] Univ Sao Paulo, Escola Politecn, SISEA Alternat Energy Syst Lab, BR-05508900 Sao Paulo, SP - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID; v. 59, p. 304-316, NOV 2015.
Citações Web of Science: 10
Resumo

This work presents an experimental study of an important component of an ammonia-water absorption refrigeration cycle based on the falling film technology-the distiller, which is formed by two parts: the generator and the rectifier. It was carried out a parametrical study on the operation of the distiller by testing several parameters. The experimental results showed that the distilled ammonia vapor concentration always degraded as rectifier, generator, and concentrated solution temperatures increased and improved as concentrated solution mass flow rates and concentrated solution concentrations increased. The highest distilled ammonia vapor concentration obtained was of 0.9974. Photographic documentation of flow pattern over the generator tube bundle was also obtained resulting in both jet column and sheet patterns. Finally, a Nusselt number correlation for the ammonia-water falling film over the generator tube bundle was proposed based on the experimental results and compared with other authors' correlations. (C) 2015 Elsevier Ltd and International Institute of Refrigeration. All rights reserved. (AU)

Processo FAPESP: 10/16304-0 - Estudo experimental de uma coluna de destilação por filme descendente para um ciclo de refrigeração por absorção de amônia/água
Beneficiário:Eli Wilfredo Zavaleta Aguilar
Linha de fomento: Bolsas no Brasil - Doutorado
Processo FAPESP: 10/10858-4 - Estudo experimental de uma coluna de destilação por filme descendente para a mistura amônia-água
Beneficiário:José Roberto Simões Moreira
Linha de fomento: Auxílio à Pesquisa - Regular