Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/349371
Type: Artigo
Title: Energy evaluation of an evaporative cooling system using water driven ejector
Author: Oliveira, Cíntia Carla Melgaço de
Chavez Gutierrez, Mirko
Silveira Junior, Vivaldo
Abstract: The search for efficient and accessible cooling systems has increased worldwide. This study aims to build and evaluate an evaporative cooling system using a water driven ejector, allowing it to be installed in places with plenty of water. The system was investigated varying the flow rate and temperature of the circulating water, temperature of the replacement water, and coefficient of performance. The best vacuum obtained was 8.5 kPa at nominal operating conditions of 4.1 ± 0.1 m3/h and 5 ± 0.5 ºC for the circulating water reaching the temperature of 9.7 ± 0.5 ºC. The pulse-like disturbance generated by replacing the cooling water at different periods of times did not result in significant affect vacuum destabilization and the temperature rise in the cooling tank. The coefficient of performance of the system at the highest thermal power of 92.27 W was 0.077, which was underestimated due to possible problems related to pump efficiency. The system evaluated under the conditions proposed can be very efficient for cooling fluids at higher temperatures, and it can be complementary to main refrigeration systems.
Subject: Resfriamento
Country: Brasil
Editor: Sociedade Brasileira de Ciência e Tecnologia de Alimentos
Rights: Aberto
Identifier DOI: 10.1590/fst.2014.0043
Address: https://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612014000200029&lng=en&tlng=en
Date Issue: 2014
Appears in Collections:FEA - Artigos e Outros Documentos

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