JournalTOCs

International Journal of Renewable Energy Technology
Number of Followers: 11

Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1757-3971 - ISSN (Online) 1757-398X
Published by Inderscience Publishers

[439 journals]

Experimental study and comparison of integrated solar dryer with and
without reversed absorber and reflector
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 Authors: Vijay R. Khawale, Bhojraj N. Kale, Vilas G. Dhore
 Pages: 1 - 15
 Abstract: The aim of this manuscript is to recommend a solar crop dryer with reversed absorber and reflector which collects the maximum possible solar emission. For experimentation, the model was made adjustable such that it can satisfy the required conditions. Two types of solar dryers are used: 1) solar dryer without reversed absorber and reflector; 2) solar dryer with reversed absorber and reflector. The average collector efficiency (ηc), drying efficiency (ηd) and the picking efficiency (ηp) of multi-pass SCD with reversed absorber and reflector (SD6) values were 34%, 49% and 64% respectively. Excel software was used to find the changes in moisture content with the time and constants by graphical method. These values show that SD6 is more effective than any other solar dryer. The experimental data is more suitable for Pages' model than other models. Pages' model gives the best results with the maximum value of R2 and the minimum value of MBE and RMSE. It has been found that SD6 is the most effective solar dryer and can be used to dry other agriculture food products also.
 Keywords: flat plate collector; solar crop dryer; reversed absorber; reflector; red chilli
 Citation: International Journal of Renewable Energy Technology, Vol. 14, No. 1 (2023) pp. 1 - 15
 PubDate: 2022-12-09T23:20:50-05:00
 DOI: 10.1504/IJRET.2023.127564
 Issue No: Vol. 14, No. 1 (2022)
Incorporating grid extension into the geospatial multi-criteria analysis
of the suitability of multi-renewable energy projects
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  Authors: Dave J. Pojadas, Michael Lochinvar S. Abundo
  Pages: 16 - 57
  Abstract: Geographic information system-assisted multi-criteria analysis is the most popular approach in selecting the most suitable sites for renewable energy projects. The current practice in this approach often takes only one or two technologies at a time (mostly solar and wind), and grid extension has never been considered in the process. This paper presents a methodology for selecting sites for utility-scale renewable energy projects considering solar, wind, biomass, and hydro resources all at once. Splitting the study area according to proximity from the existing grid and extending the latter to relatively distant areas is proposed to account for the possibility that resource quality may outperform grid infrastructure investment. As a parallel research objective, the sensitivity of new (terrain ruggedness index and resource density) and traditional ranking criteria was investigated. The case study showed that a resource over 5 km away from the grid is a better project option when the grid is extended.
  Keywords: grid extension; geospatial; multi-criteria analysis; suitability analysis; renewable energy; wind energy; solar energy; biomass; hydropower
  Citation: International Journal of Renewable Energy Technology, Vol. 14, No. 1 (2023) pp. 16 - 57
  PubDate: 2022-12-09T23:20:50-05:00
  DOI: 10.1504/IJRET.2023.127565
  Issue No: Vol. 14, No. 1 (2022)
Techno-economic optimisation of a standalone solar PV battery energy
storage system: a metaheuristic approach
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  Authors: Kudzanayi Chiteka, Tendaishe Munetsiwa, Tatenda Kanyowa, Garikayi Victor Nyakujara, Emmanuel Ndala
  Pages: 58 - 76
  Abstract: This study optimised the battery energy storage system of a standalone solar home system. The optimisation considered the futuristic price drops in battery energy storage systems due to future technological developments. Two battery technologies, i.e., the lithium ion battery type and the sealed maintenance free battery were analysed. This study modelled the life of a battery energy storage system against the depth of discharge and the cost of energy storage. It was revealed that optimising the battery energy storage system considering future price drop reduced the levelised cost of energy by at least 17% and in this study a levelised cost of energy of US$0.066 was obtained which is 8.33% less than the standard domestic tariff in Zimbabwe. This study recommended an optimal depth of discharge of respectively 73% and 45% for lithium ion batteries and sealed maintenance free batteries.
  Keywords: solar energy; battery energy storage system; BESS; optimisation; metaheuristic; solar home system; SHS; depth of discharge; DoD
  Citation: International Journal of Renewable Energy Technology, Vol. 14, No. 1 (2023) pp. 58 - 76
  PubDate: 2022-12-09T23:20:50-05:00
  DOI: 10.1504/IJRET.2023.127563
  Issue No: Vol. 14, No. 1 (2022)
Soil thermal saturation characteristics a limiting performance parameter
of an earth air heat exchanger - an experimental investigation
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 Authors: Swati Donde, Ram Subhash Maurya
 Pages: 77 - 91
 Abstract: In the continuous work of an earth air heat exchanger (EAHE), the thermal saturation of the soil adversely affects its further working. Hence, for its in-depth analysis, an actual EAHE is modelled as an equivalent cartridge heater and as a source of heat in the soil. Four soil samples were considered for the experimental investigation. The nature of heat propagation in all soil samples under continuous heating for six hours was recorded and studied. In terms of thermal saturation, the soil with the highest thermal conductivity (0.61W m-1 K-1) performed better than the soil with the lowest thermal conductivity (0.01W m-1 K-1). For all soil samples, the maximum heat-affected zone is up to 0.15 m from the heat source. The present work proposes an efficient method of easy investigation to characterise the site soil, which is cost-effective and less laborious compared to other available methods. This paper is really helpful for EAHE designers.
 Keywords: earth air heat exchanger; EAHE; thermal saturation; modelling; soil; geothermal; cooling/heating; experimental investigation
 Citation: International Journal of Renewable Energy Technology, Vol. 14, No. 1 (2023) pp. 77 - 91
 PubDate: 2022-12-09T23:20:50-05:00
 DOI: 10.1504/IJRET.2023.127570
 Issue No: Vol. 14, No. 1 (2022)
A multi-objective decision framework for the selection of feasible and
viable hybrid renewable energy systems in energy-constrain communities
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 Authors: Zwalnan Selfa Johnson, Yousif Abdalla Abakar, S. Anandan Shanmugam, Andy Chan
 Pages: 92 - 113
 Abstract: Choosing the appropriate system configuration that meets the multi-objective of profit-making and environmental protection is always a critical decision for both entrepreneurs and the government. The choice is complicated primarily if several possible alternatives exist. In this paper, a decision framework was developed to select from four configurations, the configuration that best fits decision-makers' multi-objective of profit-making and environmental protection. It was found that, overall, the grid-connected PV-battery hybrid configuration, for now, offers the best fit to the desired profitability and CO2 mitigation effort with a similarity index of 96.10%. Whereas for now, the standalone PV-batt configuration is only about 29.93% close to this desired objective. It is inferred, therefore, that the complete exclusion of conventional energy from the concept of sustainable energy, for now, leads to an unequivocal increase in installation costs, preventing investments in green technology, particularly in developing countries.
 Keywords: hybrid energy system; techno-economic; multi-objective; CO2 emission
 Citation: International Journal of Renewable Energy Technology, Vol. 14, No. 1 (2023) pp. 92 - 113
 PubDate: 2022-12-09T23:20:50-05:00
 DOI: 10.1504/IJRET.2023.127569
 Issue No: Vol. 14, No. 1 (2022)