International Journal of Sustainable Energy最新文献

{"title":"Sustainable strategies for anaerobic digestion of oil palm empty fruit bunches in Indonesia: a review","authors":"S. Suhartini, N. Hidayat, N. A. Rohma, R. Paul, M. B. Pangestuti, R. N. Utami, I. Nurika, L. Melville","doi":"10.1080/14786451.2022.2130923","DOIUrl":"https://doi.org/10.1080/14786451.2022.2130923","url":null,"abstract":"ABSTRACT Indonesia has abundant oil palm empty fruit bunches (OPEFBs). However, high lignin content in OPEFBs may hinder their valorisation to bioenergy resources, as its degradation by microorganisms is rate-limiting. This paper aims to review OPEFB as feedstock in anaerobic digestion (AD) systems and sustainable strategies to enhance methane yield. This paper provides a comprehensive review of the availability of OPEFB, the prospective of AD technology, and compares various biological pre-treatment and co-digestion strategies for superior AD process. Improving the value-added benefits from OPEFBs and simultaneously making pre-treatment processes more sustainable is critical to wider application. Several scenarios were proposed by combining multi-stage pre-treatment of physical and mushroom cultivation pre-treatment prior to AD. This paper presents an original approach to establishing a commercially viable and sustainable AD of OPEFBs in Indonesia by integrating multi-product biorefinery and a circular economy. Further investigation is required to ensure cost-effective and eco-friendly configurations. Abbreviations: ABR: Anaerobic Baffled Reactor; AD: Anaerobic Digestion; AF: Anaerobic Filter; AFEX: Ammonia Fibre Expansion; AI: Artificial Intelligence; AnMBR: Anaerobic Membrane Bioreactor; ANN: Artificial Neural Network; ASP: Activated Sludge Process; CMM: Cattle Manure and Maize Silage; COD: Chemical Oxygen Demand; CPO: Crude Palm Oil; CPW: Cocoa Pods Waste; CSTR: Continuous Stirred-Tank Reactor; DH: Dry Husk; DM: Dry Matter; DMF: 2,5-dimethylfuran; EM: Effective Microorganisms; EGSB: Expanded Granular Sludge Bed; FBR: Fluidised Bed Reactors; FFB: Fresh Fruit Bunch; FTIR: Fourier-Transform Infrared Spectroscopy; GHG: Greenhouse Gasses; HRT: Hydraulic Retention Time; IC: Internal Circulation Reactor; IoT: Internet of Things; Lac: Laccase Enzyme; L-AD: Liquid-AD; LiP: Lignin Peroxidase; LRAD: Low-Rate AD; MARS: Multivariate Adaptive Regression Splines; MCC: Microcrystalline Cellulose; MDF: Medium-Density Fibreboard; MEMR: Ministry of Energy and Mineral Resources, Republic of Indonesia; ML: Machine Learning; MnP: Manganese Peroxidase; MPA: Marine Predators Algorithm; MSW: Municipal Solid Waste; OFMSW: Organic Fraction of Municipal Solid Waste; OLR: Organic Loading Rates; OPEFBs: Oil Palm Empty Fruit Bunches; OPF: Oil Palm Fibre; OPKS: Oil Palm Kernel Shell; OPMF: Oil Palm Mesocarp Fibre; OPT: Oil Palm Trunk; P(3HB): Poly(3-Hydroxybutyrate); PHA: Polyhydroxyalkanoate; PLTBg: Biogas Power Plants; POM: Palm Oil Mill; POME: Palm Oil Mill Effluent; SCG: Spent Coffee Grounds; SRF: Solid Refused Fuel; SRT: Solids Retention Time; SS-AD: Solid-State AD; TS: Total Solid; TSI: Torrefaction Severity Index; UASB: Up-flow Anaerobic Sludge Blanket; VFA: Volatile Fatty Acids; VP: Versatile Peroxide; VS: Volatile Solid; W2E: Waste-to-Energy.","PeriodicalId":14406,"journal":{"name":"International Journal of Sustainable Energy","volume":"41 1","pages":"2044 - 2096"},"PeriodicalIF":3.1,"publicationDate":"2022-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45579125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A review on thermal performance and heat transfer augmentation in solar air heater","authors":"S. Sharma, A. Debbarma","doi":"10.1080/14786451.2022.2125518","DOIUrl":"https://doi.org/10.1080/14786451.2022.2125518","url":null,"abstract":"ABSTRACT Development in solar air collectors have increased because of the renewable and non-polluting sources of energy. The present study focused on artificial roughness, vortex generators, thermal storage units, etc., which are employed to improve the performance of Solar Air Heaters (SAHs). Thermal efficiency of Double Pass Solar Air Heater (DPSAH) improved from 10% to 15% as compared to the Single Pass Solar Air Heater (SPSAH) and improves further using an integrated absorber with a heat storage unit. About 12% and 15% improvement in thermal and thermo-hydraulic efficiency was achieved using a rough absorber. Integrated absorbers with Composite Phase Change Materials (CPCMs) based heat storage is one of the new signs of progress to optimize the thermal efficiency of SAHs.","PeriodicalId":14406,"journal":{"name":"International Journal of Sustainable Energy","volume":"41 1","pages":"1973 - 2019"},"PeriodicalIF":3.1,"publicationDate":"2022-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44696992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Combined voltage and frequency response in a solar thermal system with thermostatically controlled loads in an isolated hybrid microgrid scheme","authors":"Mausri Bhuyan, Dulal chandra das, Amar Kumar Barik","doi":"10.1080/14786451.2022.2126842","DOIUrl":"https://doi.org/10.1080/14786451.2022.2126842","url":null,"abstract":"ABSTRACT The generation of energy from renewable sources is dependent mostly on weather conditions because of which instabilities in the hybrid microgrid system may arise. To tackle the same in such a system, coordinated frequency and voltage control with appropriate control strategy have been investigated in this work considering a single area independent hybrid system. A combined solar gas turbine, solar chimney, and biodiesel-operated generator along with hybrid electric vehicles and refrigerators as the thermostatic load are used to model the hybrid system. Constraints of the proposed cascaded PI-TID controller are finely tuned with the recently developed DBOA. Coordinated frequency and voltage control of a combined solar gas turbine-solar chimney with thermostatic loads in an isolated hybrid microgrid system have not been reported earlier. Furthermore, the application of DBOA to tune a cascaded PI-TID controller for coordinated control of voltage and frequency is a novel approach. Extensive simulation studies of the model is carried out to obtain the dynamic response by considering various uncertain conditions. Values of maximum overshoot (0.002194), undershoot (0.006042), and setting time (1.781sec) of frequency deviation and peak overshoot (0.002296), undershoot (0.004511), and setting time (1.709 sec) of voltage deviation proved the effectiveness of the proposed system.","PeriodicalId":14406,"journal":{"name":"International Journal of Sustainable Energy","volume":"41 1","pages":"2020 - 2043"},"PeriodicalIF":3.1,"publicationDate":"2022-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45243801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Outdoor degradation evaluation of multi-junction solar cell for four Fresnel concentrated photovoltaic systems","authors":"K. Mahalakshmi, K. S. Reddy, A. Subrahmanyam","doi":"10.1080/14786451.2022.2125517","DOIUrl":"https://doi.org/10.1080/14786451.2022.2125517","url":null,"abstract":"ABSTRACT The degradation effect of triple-junction solar cells due to exposure in practical conditions and its influence on the performance of Fresnel concentrated photovoltaic system has been studied. To analyse the behavioural performance theoretically and experimentally, four secondary concentrators of similar physical structure but with reflective and refractive properties such as a refractive prism, reflective prism, refractive, and reflective compound parabolic concentrator are considered. Observations characterising solar cells as new, semi-old, and old based on their degradation reveal an efficiency decrease of up to 42%. Also, results demonstrate better performance for reflective profiles, particularly with 17% overall efficiency by reflective prism, besides Fresnel lens without any secondary concentrator exhibits the highest efficiency of 21%. The behavioural characteristics of the individual system have been addressed based on practical errors.","PeriodicalId":14406,"journal":{"name":"International Journal of Sustainable Energy","volume":"41 1","pages":"1958 - 1972"},"PeriodicalIF":3.1,"publicationDate":"2022-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45146197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Floating photovoltaic technology definition aided with multi-criteria decision analysis: a case study","authors":"Salvatore Di Grazia, G. Marco Tina","doi":"10.1080/14786451.2022.2124412","DOIUrl":"https://doi.org/10.1080/14786451.2022.2124412","url":null,"abstract":"ABSTRACT The demand for electrical energy is constantly growing. Power generation from renewable sources will play a role in meeting the electricity demand. Floating photovoltaics is a solution that still needs to be explored in the design and construction phases. The floating system has important characteristics: it reduces evaporation of water and algae growth in the basins, it does not occupy land and has a high efficiency due to the evaporative cooling effect. Multi-criteria decision analysis is used to determine the best technology, between fixed or tracked structure, on a system in Sicily. Analysis provided results regarding the superiority of horizontal axis tracking systems; the Levelized Cost Of Electricity is 64.37 USD/MWh and the avoided CO2 emissions are 23,491.60 tonnes.","PeriodicalId":14406,"journal":{"name":"International Journal of Sustainable Energy","volume":"41 1","pages":"1938 - 1957"},"PeriodicalIF":3.1,"publicationDate":"2022-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42755937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamic modelling of a ground-coupled solar ejector cooling system","authors":"Youssef Mazloum, Akram S. Ghanem","doi":"10.1080/14786451.2022.2121963","DOIUrl":"https://doi.org/10.1080/14786451.2022.2121963","url":null,"abstract":"ABSTRACT This work presents a solar-driven air conditioning system based on ejector technology with closed-loop vertical geothermal boreholes. Modeling and simulation are carried out using Dymola software for dynamic transient analysis, with the refrigerant R134a. Condenser temperature regulation produces a 267% improvement of performance compared to a solar-only configuration. Solar fraction increases with increasing solar collector area, which benefits the system up to the limit of 27 m2 for a cooling load of 9 kW. The reservoir volume ensuring high solar fraction is 14 m3. Optimal generator saturation temperature ensures a seasonal coefficient of performance value of 0.772 and a maximum overall efficiency of 39%. When the system encounters deviations from the optimum set point, the overall efficiency becomes 37.4%.","PeriodicalId":14406,"journal":{"name":"International Journal of Sustainable Energy","volume":"41 1","pages":"1903 - 1937"},"PeriodicalIF":3.1,"publicationDate":"2022-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45161385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fault diagnosis of offshore wind turbine gearboxes using a dynamic Bayesian network","authors":"T. Elusakin, M. Shafiee","doi":"10.1080/14786451.2022.2119390","DOIUrl":"https://doi.org/10.1080/14786451.2022.2119390","url":null,"abstract":"ABSTRACT The gearbox system is one of the most critical subassemblies in offshore wind turbine (OWT) drivetrains whose failures could lead to long downtimes and high repair costs. Therefore, it is crucial to accurately diagnose and predict the gearbox faults at an early stage of development. This study develops a new dynamic Bayesian network (DBN) framework for fault diagnosis and reliability analysis of OWT gearbox systems by incorporating components’ degradation information and condition-based maintenance (CBM) strategy. The reliability, availability, and mean-time between failures (MTBF) as well as the failure criticality index (FCI) for each subassembly are estimated. The results identified the loss of function in the bearing subassembly as the most likely underlying cause of a failure in the gearbox system.","PeriodicalId":14406,"journal":{"name":"International Journal of Sustainable Energy","volume":"41 1","pages":"1849 - 1867"},"PeriodicalIF":3.1,"publicationDate":"2022-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41616898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determinants of foreign direct investment in renewable electricity industry in Africa","authors":"A. Rashed, Chen-Chen Yong, Siew-Voon Soon","doi":"10.1080/14786451.2021.2016763","DOIUrl":"https://doi.org/10.1080/14786451.2021.2016763","url":null,"abstract":"ABSTRACT Using a novel dataset of foreign direct investment (FDI) corporations in the renewable electricity industry (REI), coupled with a large range of employed variables, this paper empirically examines FDI determinants in the REI in Africa between 2003 and 2019. The electricity insecurity issues worsen daily, aggravating all facets of African life. A range of promising and informative results were found using the FDI panel gravity fixed effects Poisson pseudo-maximum likelihood model. Interestingly, we reveal the uselessness of fossil fuel subsidy changes in stimulating green FDI in Africa. However, a 1% growth in Africa’s gross domestic product expands FDI by almost 1.5%. Similarly, one additional point in the corruption index reduces FDI by about 1.2%. Furthermore, increasing the number of educated African children and raising renewable energy awareness contributes constructively to the REI and sustainable energy development. To mitigate the energy issues, policymakers should elevate clean power consciousness among Africans and enhance sustainable energy support and policies.","PeriodicalId":14406,"journal":{"name":"International Journal of Sustainable Energy","volume":"41 1","pages":"980 - 1004"},"PeriodicalIF":3.1,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48580205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Techno-economic and environmental assessment to mitigating climate change and building energy security: a study on willingdon island","authors":"S. Sajith, Tarun Dhingra, Anil Kumar, M. Y. Bhat, R. Aswani","doi":"10.1080/14786451.2022.2119973","DOIUrl":"https://doi.org/10.1080/14786451.2022.2119973","url":null,"abstract":"ABSTRACT This paper aims to solve the state's hydropower dependence, build energy security and reduce greenhouse gas emissions through a hybrid renewable energy system and its implementation in Willingdon Island. Hybrid Optimisation of Multiple Energy Resources (HOMER) is used to find the optimal solution for two grid-connected and off-grid scenarios. Of the 19 solutions, an optimal off-grid, an optimal grid-connected, a 100% variable renewable energy, and a diversified energy portfolio option are selected, analyzed, and ranked based on their techno-economic and emissions characteristics. The results suggest the combination of PV/Wind/Grid with a cost of energy of $0.044 as an optimal solution for the Island. The diversified energy solution takes the second position, having 51.4% and 38.8% solar and wind, respectively.","PeriodicalId":14406,"journal":{"name":"International Journal of Sustainable Energy","volume":"41 1","pages":"1868 - 1887"},"PeriodicalIF":3.1,"publicationDate":"2022-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42000274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A multi-variable building energy optimization: assessing the role of energy efficient lighting technology in changing the optimal window-to-wall ratio in an office building","authors":"Zahra Zolfaghari, James Jones","doi":"10.1080/14786451.2022.2118276","DOIUrl":"https://doi.org/10.1080/14786451.2022.2118276","url":null,"abstract":"ABSTRACT Daylight harvesting is a passive strategy that helps to increase occupants’ productivity, mental and physical health as well as spatial quality and energy performance. Therefore, decisions regarding windows’ size and placement are extremely important in the design process. Although beneficial in many ways, large windows are not an energy-efficient design decision in many climates. While daylight admitted through windows reduces the lighting load, it can cause excessive heat flow and increased cooling load. Energy standards limit the window-to-wall ratio (WWR) to 40% to balance the heat exchange and light gain. However, this general requirement does not account for climate, building type, lighting fixtures, etc. Advancements in the lighting industry have introduced efficient lighting fixtures that can change the WWR and lighting power density (LPD) code requirements for some climates. This study used a simulation method to investigate the impact of new lighting systems on facade design, WWR, energy performance, proposed changes to the code requirements, and daylight harvesting effectiveness in presence of efficient lighting fixtures. The results suggested a lower reliance on daylight and large windows with the use of efficient lighting fixtures and proposed a revision of the 40% prescriptive requirement due to the recent upgrades in lighting systems.","PeriodicalId":14406,"journal":{"name":"International Journal of Sustainable Energy","volume":"41 1","pages":"1819 - 1835"},"PeriodicalIF":3.1,"publicationDate":"2022-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46779004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}