DOI: https://doi.org/10.14710/ijred.2020.30575

Comparative Study of the Thermal Performance of Two Thermosiphon Solar Water Heaters System

1Laboratoire des Sciences de la Matière de l’Environnement et de l’Energie Solaire, UFR SSMT, Université Félix Houphouët Boigny, , Côte d'Ivoire

222 B.P. 582 Abidjan 22,, Côte d'Ivoire

3Laboratoire d’Energies Nouvelles et Renouvelables, UMRI 58, Institut National Polytechnique Félix Houphouët Boigny, B.P. 581 Yamoussoukro, Côte d'Ivoire

Received: 25 May 2020; Revised: 4 Jul 2020; Accepted: 9 Jul 2020; Available online: 11 Jul 2020; Published: 15 Oct 2020.
Editor(s): H Hadiyanto
Open Access Copyright (c) 2020 The Authors. Published by Centre of Biomass and Renewable Energy (CBIORE) under http://creativecommons.org/licenses/by/4.0.

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Abstract

 The aim of this study is to present the comparative results of experimental investigations of the thermal performance of two thermosiphon solar water heaters system (SWHS). The first uses the coconut fiber (CF), a local vegetable and the second, the glass wool (GW), an imported and expensive material, as thermal insulations. The maximum instantaneous efficiencies are, respectively, 65.30 % and 58.7% with glass wool and coconut fiber while the mass flow rate values are, respectively, 0.0098 kg/s and 0.0078 kg/s with glass wool and coconut fiber. In addition, the calculated average values of F’(τα) and F’UL are, respectively, 0.79 and 5.86 Wm-2°C for the coconut fiber collector and 0.8 and 5.26 Wm-2°C for the glass wool collector. The average heat exchanger effectiveness obtained for the two SWHS are superior to 50%. As an environment-friendly and renewable material, coconut fiber is particularly suitable for thermal insulation in order to save energy. The experimental results show the ability of the constructed solar water heater in providing hot water suitable for maternity, hotels, households and encourage its implementation and utilization on a broad scale. The SWHS can be used in any weather conditions.

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Keywords: Thermal conductivity, Coconut fiber; Glass wool; Heat exchanger; Thermal performance

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Section: Original Research Article
Language : EN
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