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International Journal of Renewable Energy Development
Published by Center of Biomass and Renewable Energy
ISSN : 22524940     EISSN : 27164519     DOI : https://doi.org/10.61435/ijred.xxx.xxx
Core Subject : Science, Engineering,
Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering
The International Journal of Renewable Energy Development - (Int. J. Renew. Energy Dev.; p-ISSN: 2252-4940; e-ISSN:2716-4519) is an open access and peer-reviewed journal co-published by Center of Biomass and Renewable Energy (CBIORE) that aims to promote renewable energy researches and developments, and it provides a link between scientists, engineers, economist, societies and other practitioners. International Journal of Renewable Energy Development is currently being indexed in Scopus database and has a listing and ranking in the SJR (SCImago Journal and Country Rank), ESCI (Clarivate Analytics), CNKI Scholar as well as accredited in SINTA 1 (First grade category journal) by The Directorate General of Higher Education, The Ministry of Education, Culture, Research and Technology, The Republic of Indonesia under a decree No 200/M/KPT/2020. The scope of journal encompasses: Photovoltaic technology, Solar thermal applications, Biomass and Bioenergy, 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, planning and management, Life cycle assessment. The journal also welcomes papers on other related topics provided that such topics are within the context of the broader multi-disciplinary scope of developments of renewable energy.
Arjuna Subject : Energi (semua kategori) - Energi Terbarukan, Keberlanjutan dan Lingkungan
Articles 761 Documents
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Experimental investigation of a wildlife-safe origami-inspired reaction-type wind turbine for sustainable urban energy systems Ahmad Sedaghat; Mohamad Hussein Farhat; Bassem Djedi; Mohamad Iyad Al-Khiami; Mohamed El Badawy
International Journal of Renewable Energy Development Vol 15, No 4 (2026): July 2026
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2026.62526

Abstract

Small-scale wind turbines offer sustainable solutions for distributed renewable energy generation in urban environments. However, their deployment is often limited by concerns related to noise, visual impact, and risks to flying wildlife. This study presents an experimental investigation of a novel origami-inspired reaction-type wind turbine designed to improve urban compatibility through a compact, aesthetic, and bladeless configuration that enhances operational safety. Unlike conventional lift- or drag-based turbines, the proposed design operates based on a reaction force generated by redirecting axial inlet airflow into tangential outlet flow through internal nozzle conduits. Two miniature prototypes were fabricated using 3D printing with rotor diameters of 10 cm and 8 cm, both designed with a nozzle aspect ratio of unity and incorporating four inlet openings. The performance of the turbines was evaluated experimentally and theoretically under four operating conditions: free rotation, generator operation without load, fixed load operation, and variable load operation. Key performance parameters including cut-in wind speed, rotational speed, power output, and power coefficient were assessed through wind tunnel testing. The results demonstrate that the proposed origami wind turbine achieves a maximum power coefficient of C_P=0.28 at a tip speed ratio of λ=1.21, which is comparable to conventional small-scale turbines despite its bladeless configuration. Importantly, this study establishes that a reaction-type, bladeless turbine can simultaneously deliver competitive aerodynamic performance while significantly improving safety, reducing noise, and minimizing environmental impact. These findings highlight the strong potential of origami-inspired reaction-type wind turbines as viable and sustainable solutions for urban energy systems.
The effect of temperature during the hydrocracking of low-density polyethylene using a Ni-Cu/HZSM-5 catalyst Suhailah Salma Maulida; Sri Kadarwati; Adid Adep Dwiatmoko; Egi Agustian
International Journal of Renewable Energy Development Vol 15, No 4 (2026): July 2026
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2026.61922

Abstract

LDPE plastics contributed 20-30% of the plastics use. Due to its non-biodegradable properties, plastic waste management is crucial. In the other hand, the LDPE plastics provide potential and benefits in the exploration of energy resources; they could be converted to liquid fuels through a catalytic hydrocracking. This study focuses on the effect of temperatures during the hydrocracking of LDPE using a Ni-Cu/HZSM-5 catalyst. The Ni-Cu/HZSM-5 catalyst was synthesized using the wet impregnation method assisted by an ultrasonic irradiation. The characteristics of the catalyst were evaluated prior to its use during the hydrocracking of LDPE. This study showed that the impregnation of Ni and Cu at HZSM-5 surface did not significantly affect the crystallinity of HZSM-5. Even though the peaks of Ni and Cu in the diffraction pattern were not clearly observed, their presence at HZSM-5 surface was well confirmed by the XRF spectrum. In addition, the hierarchical structure of HZSM-5 was also confirmed by the appearance of microporosity together with the type-IV hysteresis loop on the nitrogen adsorption-desorption isotherm. A considerable decrease (~25%) of the catalyst acidity was observed after the impregnation of Ni and Cu at HZSM-5 surface. The Ni-Cu/HZSM-5 catalyst showed a good activity during the hydrocracking of LDPE at temperatures of 275−400 °C, resulting in liquid, solid, and gaseous products. The yields of the liquid product increased by increasing the hydrocracking temperatures. It was observed that by increasing the hydrocracking temperatures, the yield of the kerosene and diesel fractions decreased, while the yield of the gasoline fraction increased, as supported by the density and calorific value that was close to the commercial gasoline. A further temperature increase would lead to more products with lighter fractions, reducing the yield of gasoline. This was also supported by the presence of alkenes, ketones, and esters formed after the catalytic hydrocracking as shown by the FTIR spectra of the liquid products.
Steam gasification of wood biomass in a fluidized biocatalytic system bed gasifier: A model development and validation using experiment and Boubaker Polynomials Expansion Scheme BPES Vecchione, Luigi; Moneti, Marta; Di Carlo, Andrea; Savuto, Elisa; Pallozzi, Vanessa; Carlini, Maurizio; Boubaker, Karem; Longo, Leonardo; Colantoni, Andrea
International Journal of Renewable Energy Development Vol 4, No 2 (2015): July 2015
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.4.2.143-152

Abstract

One of the most important issues in biomass biocatalytic gasification is the correct prediction of gasification products, with particular attention to the Topping Atmosphere Residues (TARs). In this work, performedwithin the European 7FP UNIfHY project, we develops and validate experimentally a model which is able of predicting the outputs,including TARs, of a steam-fluidized bed biomass gasifier. Pine wood was chosen as biomass feedstock: the products obtained in pyrolysis tests are the relevant model input. Hydrodynamics and chemical properties of the reacting system are considered: the hydrodynamic approach is based on the two phase theory of fluidization, meanwhile the chemical model is based on the kinetic equations for the heterogeneous and homogenous reactions. The derived differentials equations for the gasifier at steady state were implemented MATLAB. Solution was consecutively carried out using the Boubaker Polynomials Expansion Scheme by varying steam/biomass ratio (0.5-1) and operating temperature (750-850°C).The comparison between models and experimental results showed that the model is able of predicting gas mole fractions and production rate including most of the representative TARs compounds
A Reliability Based Model for Wind Turbine Selection Rajeevan, A.K.; Shouri, P.V.; Nair, Usha
International Journal of Renewable Energy Development Vol 2, No 2 (2013): July 2013
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2.2.69-74

Abstract

A wind turbine generator output at a specific site depends on many factors, particularly cut- in, rated and cut-out wind speed parameters. Hence power output varies from turbine to turbine. The objective of this paper is to develop a mathematical relationship between reliability and wind power generation. The analytical computation of monthly wind power is obtained from weibull statistical model using cubic mean cube root of wind speed. Reliability calculation is based on failure probability analysis. There are many different types of wind turbines commercially available in the market. From reliability point of view, to get optimum reliability in power generation, it is desirable to select a wind turbine generator which is best suited for a site. The mathematical relationship developed in this paper can be used for site-matching turbine selection in reliability point of view.
Biodiesel from Mustard oil: a Sustainable Engine Fuel Substitute for Bangladesh Alam, M.M.; Rahman, K.A.
International Journal of Renewable Energy Development Vol 2, No 3 (2013): October 2013
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2.3.141-149

Abstract

Various attractive features of mustard oil based biodiesel as a potential substitute for engine fuel are investigated in this paper for use in Bangladesh. Although the use of mustard oil as edible oil has been reduced, Bangladesh still produces 0.22 million metric tons of mustard oil per year. This surplus mustard oil would satisfactorily be used as an alternative to diesel fuel, and thus could contribute in reducing the expenses for importing fuel from foreign countries. Moreover, the rural people of Bangladesh are capable of producing mustard oil themselves using indigenous machines. Fuel properties of biodiesel obtained from mustard oil were determined in the laboratory using standard procedure and an experimental setup was constructed to study the performance of a small diesel engine. It is observed that with biodiesel, the engine is capable of running without difficulty. Initially different lower blends of biodiesel (e.g., B20, B30 etc.) have been used to avoid complicated modification of the engine and the fuel supply system. It is also found in some condition that mustard oil based biodiesel have better properties than those made from other vegetable oils. These properties of mustard oil based biodiesel were evaluated to validate its sustainability in Bangladesh.
Analytical Investigations of Kinetic and Heat Transfer in Slow Pyrolysis of a Biomass Particle Ojolo, S.J; Osheku, C.A.; Sobamowo, M.G
International Journal of Renewable Energy Development Vol 2, No 2 (2013): July 2013
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2.2.105-115

Abstract

The utilization of biomass for heat and power generation has aroused the interest of most researchers especially those of energy .In converting solid fuel to a usable form of energy, pyrolysis plays an integral role. Understanding this very important phenomenon in the thermochemical conversion processes and representing it with appropriate mathematical models is vital in the design of pyrolysis reactors and biomass gasifiers. Therefore, this study presents analytical solutions to the kinetic and the heat transfer equations that describe the slow pyrolysis of a biomass particle. The effects of Biot number, temperature and residence time on biomass particle decomposition were studied. The results from the proposed analytical models are in good agreement with the reported experimental results. The developed analytical solutions to the heat transfer equations which have been stated to be “analytically involved” showed average percentage error and standard deviations 0.439 and 0.103 from the experimental results respectively as compared with previous model in literature which gives average percentage error and standard deviations 0.75 and 0.106 from the experimental results respectively. This work is of great importance in the design of some pyrolysis reactors/units and in the optimal design of the biomass gasifiers.
Comparative study on the quality and drying kinetics of temulawak by open-sun drying and biomass pyrolysis-integrated flat-bed dryer Rosdanelli Hasibuan; Juliza Hidayati; Muhammad Khuwailid; Thiodorus Marvin Tjandra; Viqry Pramananda
International Journal of Renewable Energy Development Vol 15, No 4 (2026): July 2026
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2026.62014

Abstract

Temulawak is a medicinal plant which is known for its active compound, curcumin. To extend its shelf life, freshly harvested rhizomes are typically subjected to drying to reduce their moisture content. However, the drying process must be carefully controlled to prevent curcumin degradation which is thermolabile. Despite its continued popularity for agricultural commodities drying because it requires minimal equipment and no operational expenses, open-sun drying (OSD) leaves the product vulnerable to external hazards such as dust, environmental pollutants, and ultraviolet exposure. A more suitable alternative is the flat-bed dryer (FBD) system. This study presents a comparison between OSD and an FBD integrated with a pyrolysis reactor for the drying of temulawak. The results demonstrated that the FBD significantly shortened the drying duration to 705 min at 70°C and 1.0 cm-thickness, compared with 2,490 min for OSD at the same thickness. The drying rate in the FBD reached 49.40–56.00 g/m2.min, substantially higher than OSD (14.60–16.00 g/m2.min). Curcumin content increased in both drying methods as a consequence of moisture reduction, with the FBD achieving 14.82 ppm within a markedly shorter drying time than OSD. Morphological analysis revealed cell-wall shrinkage and deformation of starch granules after drying, particularly in FBD-dried temulawak. Elemental composition analysis showed a considerable increase in mineral fractions after drying, corresponding to the reduction in moisture content. Drying kinetic modelling indicated that the Hasibuan–Daud model provided the best fit for FBD data, whereas the Midilli model offered the closest agreement with the experimental data obtained from OSD. The effective moisture diffusivity obtained for the FBD was 4.970 × 10-8 m2/s, significantly higher than that of OSD, with an activation energy of  29.53 kJ/mol. Overall, the use of an FBD integrated with a pyrolysis reactor offers a sustainable and efficient alternative for the high-quality drying of medicinal plants, outperforming conventional OSD.
Variations of wave energy power in shoaling zone of Benin coastal zone A. Houekpoheha, Mathias; B. Kounouhewa, Basile; T. Hounsou, Joël; N. Tokpohozin, Bernard; V. Hounguevou, Jean; N. Awanou, Cossi.
International Journal of Renewable Energy Development Vol 4, No 1 (2015): February 2015
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.4.1.64-71

Abstract

Today, we observe at the population level, that the improvement in comfort is accompanied by an increase in the electrical energy required. The predicted exhaustion of fossil energy resources maintains some speculation. Their unequal geographical distribution justifies the energy dependence of Benin overlooked from outside. So it is urgent to explore the various sources of renewable energy available to Benin. In this work, using measurements made ​​by the Millennium Challenge Account (MCA-Benin) as part of the extension of the port of Cotonou, with Boussinesq equations (Peregrine) and Stokes waves dispersion relation, we characterized the variations of various swell parameters (height, wavelength, velocities) in the shoaling zone on the study site and proceeded to estimate variations in wave energy power from deep waters to the bathymetric breaking point. Finally, the zone with high energy power (where the conversion of this energy into electrical energy would be profitable) of these waves is highlighted on the site, the local water depth at the point of breaking waves is evaluated and results obtained allowed to justify the very energetic character take by these swells on this coast when they are close to the beach.
Analysis of pine resin potential as an additive on the physical and combustion characteristics of coconut shell bio-briquettes Eli Marcelia Anggraeni; Sekar Wahyu Ningrum; Bambang Poerwadi; Hamzah Fansuri; Rama Oktavian
International Journal of Renewable Energy Development Vol 15, No 4 (2026): July 2026
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2026.61931

Abstract

Indonesia is still heavily reliant on fossil fuels; however, the growth of renewable energy sources, such as biomass, offers a promising alternative energy source. Because of its high calorific value (6,500–7,600 kcal/kg) and widespread availability, coconut shell was selected for this investigation as bio-briquette. This study aimed to analyse how the properties of coconut shell bio-briquettes were affected by the carbonization time and the concentration of pine resin added as an additive. This study investigates the production and characterization of coconut shell bio-briquettes as a sustainable solid fuel. Coconut shell charcoal was carbonized at 600°C for 120, 180, and 240 min, then ground and sieved to a particle size of –60+80 mesh. Tapioca starch (5%) was used as a binder, and pine resin, derived from Pinus merkusii, was applied externally as an ignition-enhancing additive at concentrations of 2%, 4%, 6%, 8%, and 10%. The resulting bio-briquettes were analyzed for proximate parameters (moisture, ash, volatile matter, and fixed carbon) and combustion characteristics (calorific value, ignition time, and burning rate) following SNI 01-6235-2000 standards.  At a carbonisation time of 240 min and a concentration of 8% pine resin, the best results were obtained in terms of moisture content (3.87%), ash (3%), volatile matter (10.80%), fixed carbon (82.33%), calorific value (7,761.21 cal/g), ignition time (63 s), and burning rate (0.1093 g/min). These findings demonstrate that pine resin can effectively enhance ignition performance without compromising the combustion stability. Coconut shell biobriquettes with the addition of pine resin show high potential as an environmentally friendly alternative fuel because they produce a high calorific value, low moisture and ash content, and fixed carbon content that meets SNI 01-6235-2000 standards and ISO 17225 for solid biofuel. These characteristic indicate that bio-briquettes can be used as a renewable energy source to replace fossil fuels for household needs and small-scale industries.
Thermal effects investigation on electrical properties of silicon solar cells treated by laser irradiation Pourakbar Saffar, Ali; Deldadeh Barani, Bahman
International Journal of Renewable Energy Development Vol 3, No 3 (2014): October 2014
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.3.3.184-187

Abstract

In this paper, we were investigated electrical properties of monocrystalline and polycrystalline silicon solar cells due to laser irradiation with 650 nm wavelength in two states, proximate irradiation and via optics setup. Thermal effect on the cell surface due to laser irradiation was investigated on electrical properties too. Electrical parameters investigation of solar cells illustrates cell excitement via laser irradiation and efficiency decreases due to cell surface temperature increase. Monocrystalline parameters change with uniform shape due to thermal effect and laser irradiation toward polycrystalline cells.

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