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International Journal of Renewable Energy Development
Published by Universitas Diponegoro
ISSN : 22524940     EISSN : 27164519     DOI : https://doi.org/10.14710/ijred
Core Subject : Science,
Chemistry Energy
The scope of journal encompasses: Photovoltaic technology, Solar thermal applications, Biomass, Wind energy technology, Material science and technology, Low energy Architecture, Geothermal energy, Wave and Tidal energy, Hydro power, Hydrogen Production Technology, Energy Policy, Socio-economic on energy, Energy efficiency and management The journal was first introduced in February 2012 and regularly published online three times a year (February, July, October).
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 2 Documents
 1 
Search results for , issue "2022: Accepted Articles" : 2 Documents clear
Prototype of solar collector with recirculation of nanofluids, for a convective dryer Vania Sbeyde Farias-Cervantes; Denis Del Sagrario Garcia-Marquez; Isaac Andrade-Gonzalez; Arturo-Moises Chavez-Rodriguez; Mayra I Montero-Cortes
International Journal of Renewable Energy Development 2022: Accepted Articles
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2022.44221

Abstract

The research is based on the design, construction, and evaluation of a flat-layer solar collector using nanofluids. It has the following dimensions 1 m2 by 20 cm in height, a 9 mm thick tempered glass, a heat exchanger, where nanofluids circulate, and an angle of inclination of 45 °. Nanofluids were designed based on canola oil and nanopowders of size> 50 nm of Al2O3, CuO, and a 1: 1 mixture of both; Its thermal profile was determined using the Differential Scanning Calorimetry (DSC) technique. The temperatures of the solar collector were recorded in an Agricos® unit. As a result, the maximum peaks of the air leaving the collector were as follows. 39.1 ° C, 44 ° C, 54 ° C and 47.1 ° C, for canola oil, nanofluids Al2O3, CuO, and the 1: 1 mixture respectively. it is observed that there is an increase in the outlet air temperature using nanofluids.
Numerical investigation of a new modified Savonius wind turbines Khalid Mrigua; mounia zemamou; mohammed Aggour
International Journal of Renewable Energy Development 2022: Accepted Articles
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2022.45799

Abstract

The performance of a Savonius wind turbine depends on its geometrical parameters. Various blade profiles have been developed in the past years to improve the performance of this class of turbine. In this paper, a new blade shapes of Savonius wind turbine is investigated numerically by using the CFD method. The new blade has different concave and convex shape, which is a combination of the conventional and the elliptical blade. A comparative study of three blade profiles, semi-circular, elliptical and the composed blades have been performed. Flow structures around the rotor have also been analyzed. The results show that the new modified and the elliptical blade exhibit higher performance compared to the conventional Savonius wind turbine. The new modified Savonius blade and the elliptical blade exhibit an improved performance compared to the conventional model in the order of 20.5% and 18.2% respectively at the tip speed ratio of 0.8.

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