Article
Agricultural Engineering
Paras Gupta, Upendra Rajak, Tikendra Nath Verma, Manoj Arya, Thokchom Subhaschandra Singh
Summary: This paper investigates the viability of microalgae as a replacement feedstock for compression ignition engines. The characteristics of various diesel fuel alternatives and their blends with diesel were studied. The findings show that the use of MAME20D80 and KA20D80 in diesel engines is viable.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Energy & Fuels
J. Mercy Nisha Pauline, Ramachandran Sivaramakrishnan, Arivalagan Pugazhendhi, T. Anbarasan, Anant Achary
Summary: Experimental study on converting waste cooking oil into biodiesel was conducted, with results showing that the reaction works best at high temperatures, and waste cooking oil can be a potential feedstock for biodiesel production.
Article
Environmental Sciences
Sujatha Sivarethinamohan, Joga Rao Hanumanthu, Kalyani Gaddam, Gokulan Ravindiran, Avinash Alagumalai
Summary: Using solar energy to convert waste cooking oil into biodiesel achieved high conversion efficiency, reducing fuel production costs and smoke emissions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Thermodynamics
Cheekoti Venkata Rajam, Geetanjali V. Patil, Mahadev I. Sakri, Ramesh N. Jeeragal, M. Adimurthy
Summary: Compression Ignition engines can run on a mixture of diesel and waste cooking oil biodiesel (WCOBD). An experimental analysis was conducted to study the effects of using diesel-WCOBD blends on combustion, performance, emissions, and vibrations. The results showed that partially replacing diesel with WCOBD can help address the environmental and health issues caused by excessive diesel usage and reuse of cooking oil.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
S. Jaikumar, V Srinivas, M. Rajasekhar
Summary: This study aims to improve the performance of a direct injection compression-ignition engine using nanoparticle dispersed Flaxseed oil biodiesel blend (B20). The addition of Chromium oxide (Cr2O3) nanoparticle additive has shown to enhance combustion characteristics, brake thermal efficiency, and reduce emissions.
Article
Engineering, Environmental
Jian Meng, Wenke Xu, Fanyan Meng, Baoli Wang, Peidong Zhao, Zhigang Wang, Hong Ji, Yixin Yang
Summary: The use of waste cooking oil biodiesel as diesel fuel affects the combustion and emission characteristics of a diesel engine. Adding waste cooking oil biodiesel prolongs the combustion duration and improves combustion at medium and high load conditions. It also contributes to emission reduction at low load conditions.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Energy & Fuels
Changlei Xia, Kathirvel Brindhadevi, Ashraf Elfasakhany, Mishal Alsehli, Siriporn Tola
Summary: The experimental study found that adding hydrogen can improve the combustion performance of compression ignition engines, while increasing the concentration of nanoparticles significantly improves brake thermal efficiency and reduces emissions. However, a slight decrease in NOx was observed under 75% engine load condition without the addition of nanoparticles.
Article
Energy & Fuels
Keshab Biswakarma, Pranjal Sarmah, Prabhu Paramasivam, Seshathiri Dhanasekaran, Surendra Kumar Yadav, Virendra Kumar
Summary: The study evaluates the performance of an automotive diesel engine running on a blend of waste cooking oil biodiesel (WCO) at different engine speeds. The blend composition used is 40% WCO and 60% diesel, and the engine is a naturally aspirated, water-cooled, and direct injection type. Experimental tests are conducted at various loads and engine speeds to analyze the engine's performance and emissions characteristics. The results show improvements in brake thermal efficiency and reductions in CO emissions for the blend compared to diesel fuel, but an increase in NOx emissions.
Article
Energy & Fuels
Akshay Jain, Bhaskor Jyoti Bora, Rakesh Kumar, Prabhakar Sharma, Bhaskar Jyoti Medhi, Gottipati Venkata Rambabu, Balakrishnan Deepanraj
Summary: The study explores the possibility of improving the performance of a Mesua Ferrea seed oil biodiesel run diesel engine by operating at different injection timings and load settings. The results show that retarding the injection timing at 20° bTDC improves fuel conversion efficiency, reduces exergy destruction, and lowers emissions. At injection timing of 20° bTDC for 100% load, the brake thermal efficiencies were found to be 26.11% and 27.76%, respectively, under biodiesel and diesel mode.
Article
Energy & Fuels
Karthickeyan Viswanathan, Muhammad Ikhsan Taipabu, Wei Wu
Summary: This study investigates a novel biofuel feedstock, Petit grain bitter orange oil, and its potential as an alternative energy source. Through experimental testing and analysis, the fuel properties, chemical composition, and thermal analysis of this biofuel were determined. The results showed that it performs well in terms of emissions, but its performance and combustion characteristics are better with diesel fuel.
Article
Green & Sustainable Science & Technology
Safaa El-din H. Etaiw, Medhat Elkelawy, Islam Elziny, Mohammed Taha, Ibham Veza, Hagar Alm-Eldin Bastawissi
Summary: This study investigates the effect of adding the nanocomposite SCP1 to a blend of biodiesel and commercial diesel fuel. The results show that the addition of SCP1 leads to improved engine performance and reduced emissions.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Environmental Studies
Muhamad S. N. Awang, Nurin W. M. Zulkifli, Muhammad M. Abbas, Syahir A. Zulkifli, Mohd N. A. M. Yusoff, Muhammad H. Ahmad, Muhammad A. H. Lokman NolHakim, Wan M. A. Wan Daud
Summary: The study shows that quaternary fuels can effectively improve the performance of diesel engines and reduce emissions, demonstrating great potential for utilization.
ENERGY & ENVIRONMENT
(2022)
Article
Energy & Fuels
Jayaprabakar Jayaraman, S. S. Dawn, Prabhu Appavu, Anish Mariadhas, Nivin Joy, Razan A. Alshgari, Abdulnasser Mahmoud Karami, Pham Thi Huong, M. Rajasimmam, J. Aravind Kumar
Summary: This study used Zinc oxide nanoparticles mixed with Tungsto phosphoric acid as a catalyst for producing biodiesel from waste cooking oil. By optimizing the reaction parameters, a high ester conversion rate was achieved. The synthesized biodiesel met ASTM standards and showed excellent performance in engine testing.
Article
Green & Sustainable Science & Technology
Plaban Bora, Jyotishmanyu Kakoti, Pranaynil Saikia, Nayan Jyoti Talukdar, Mayur Mausoom Phukan, Dibakar Rakshit
Summary: This study validates the sustainability of Waste Cooking Oil (WCO) microemulsion biofuel in Compression Ignition (CI) engines by evaluating life cycle performances, emission characteristics, and cogeneration potential. The results show that the environmental impact of fossil resource exploitation can be reduced by up to 34% with WCO microemulsion biofuel-petrodiesel blends compared to petrodiesel. WMBDs also exhibit decreased CO, CO2, and NOx emissions and higher cylinder pressure and net heat release rate compared to petrodiesel.
JOURNAL OF RENEWABLE AND SUSTAINABLE ENERGY
(2023)
Article
Green & Sustainable Science & Technology
Rajendra Kukana, Om Prakash Jakhar
Summary: This study produced biodiesel by combining waste cooking oil and Ambadi Seed Oil, and tested its combustion, performance, and emissions characteristics. The composite biodiesel blend W50A50DB20 showed the best performance with higher cylinder pressure, heat release rate, and brake thermal efficiency. The composite biodiesel blends were more energy-efficient and emitted fewer greenhouse gases compared to diesel fuel.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Thermodynamics
Hayri Yaman, Murat Kadir Yesilyurt, Samet Uslu
Summary: The study utilized response surface methodology to determine the optimal 1-heptanol percentage, compression ratio, and engine load for achieving the best performance and emission values in a spark ignition engine. Experimental results showed that the addition of 1-heptanol had varying effects on engine performance and emissions, with the proposed optimal operating parameters serving as guidance for the use of 1-heptanol as an alternative fuel in gasoline engines.
Article
Engineering, Mechanical
Murat Kadir Yesilyurt, Samet Uslu, Hayri Yaman
Summary: In this study, the response surface methodology was used to optimize a spark-ignition engine using methanol as an alternative fuel. The optimum compression ratio, methanol percentage, and engine load were determined to achieve the best engine response. The results showed that the response surface methodology successfully improved the engine performance, increasing thermal efficiency and reducing emissions.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2023)
Article
Thermodynamics
Hayri Yaman, Battal Dogan, Dervis Erol, Murat Kadir Yesilyurt
Summary: This study aimed to develop a power generation system that can efficiently utilize renewable energy. A Stirling engine with different working fluids and channel geometries in the displacer cylinder was designed, manufactured, and tested. The results showed that using channels and increasing the number of channels had positive effects on the engine performance, resulting in higher power output.
INTERNATIONAL JOURNAL OF ENGINE RESEARCH
(2023)
Article
Engineering, Mechanical
Soroush Gholami Ghanati, Battal Dogan, Murat Kadir Yesilyurt, Hayri Yaman
Summary: In this study, the performance and exhaust emissions of a spark-ignition (SI) engine were simulated and compared with experimental results. The engine operated at a constant speed and various powers using gasoline and blends of higher-order alcohols. The simulation showed good agreement with the experiment in terms of brake-specific fuel consumption and emissions, with some differences observed at higher engine powers.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2023)
Article
Energy & Fuels
Dervis Erol, Murat Kadir Yesilyurt, Hayri Yaman, Battal Dogan
Summary: The research evaluated the usability of diesel-biodiesel and diesel-biodiesel-hexanol fuel blends as alternatives to diesel fuel in a compression ignition engine. Energy and exergy analyses were conducted and the sustainability index was calculated. The results showed that the diesel-biodiesel binary fuel blend was the most suitable alternative fuel, with higher thermal efficiency, exergy efficiency, and sustainability index values compared to pure diesel fuel. The sustainability index decreased with an increase in alcohol and hexanol ratios in the fuel blends.
Article
Thermodynamics
Mehmet Demirbas, Murat Kadir Yesilyurt
Summary: The addition of high-oxygen additives, such as alcohols, to gasoline is an important method to reduce environmental damage. While short-chain alcohols like methanol and ethanol are commonly used, there have been few studies on the use of long-chain alcohols. This study examines the engine performance and exhaust emissions of various alcohol-gasoline blends, and analyzes their energy, exergy, economical, environmental, and sustainability parameters.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Review
Energy & Fuels
Soroush Gholami Ghanati, Battal Dogan, Murat Kadir Yesilyurt
Summary: The objective of this study is to evaluate the impact of incorporating TiO2 and SiO2 nanoparticle fuel additives on the performance, combustion characteristics, and emissions of diesel engines. The addition of these nanoparticles can improve the physical properties of base fuel, enhance combustion characteristics, increase thermal efficiency and power output, and decrease fuel consumption and emissions in diesel engines.
Article
Energy & Fuels
Murat Kadir Yesilyurt, Battal Dogan, Abdulvahap Cakmak
Summary: Thermodynamic and economic analyses were conducted on binary fuel blends (E15, EA15, M15, MA15, and T15) in a spark-ignition engine using commercial gasoline and oxygenated fuel additives. Performance and emission tests were carried out at various engine loads. Results showed that increasing engine load led to higher exergy losses and decreased unit cost of engine power exergy values. The pump price of each fuel blend affected the fuel cost rate. Exergy efficiency in fuel blends increased with increasing engine load, with the highest efficiency observed for gasoline fuel at 100% engine load. The T15 blend exhibited better energetic and exergetic performance compared to other binary blends.
Article
Thermodynamics
Nisa Nur Atak, Battal Dogan, Murat Kadir Yesilyurt
Summary: The present study examined the thermodynamic performance characteristics of the proton exchange membrane fuel cell (PEMFC) at various operating temperatures and pressures through energy and exergy analyses. It was found that increasing the operating temperature improves power density and exergy efficiency, while increased current density leads to increased irreversibility and entropy generation. Increasing working pressure does not significantly enhance exergy efficiency.
Article
Energy & Fuels
Battal Dogan, Zeki Yilbasi, Hayri Yaman, Murat Kadir Yesilyurt
Summary: The use of gasoline/bioethanol blend as an alternative fuel in SI engines was investigated through experiments and thermodynamic analysis. The study found that as the bioethanol fraction increased, the thermal and exergetic efficiencies declined, along with an increase in fuel cost and unit cost of engine power exergy. The sustainability index of the fuel blends also needed to be taken into account.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Energy & Fuels
Mirac Can Ozturk, Battal Dogan, Murat Kadir Yesilyurt
Summary: This study conducts an analysis of the energy, exergy, sustainability, and exergoeconomic performance of a grid-connected solar power plant. The study evaluates the plant's efficiency, sustainability index, and thermoeconomic and exergoeconomic parameters. The results show that the plant has high energy efficiency and moderate levels of electricity and power conversion efficiency. The sustainability index indicates positive environmental and economic performance. The thermoeconomic and exergoeconomic parameter values suggest good economic viability.
SCIENCE AND TECHNOLOGY FOR ENERGY TRANSITION
(2023)
Article
Energy & Fuels
Zeki Yilbasi, Murat Kadir Yesilyurt, Mevluet Arslan, Hayri Yaman
Summary: This study aimed to investigate the impacts of biodiesel-diesel-higher alcohol blends on the performance, emission, and combustion behaviors of a single-cylinder diesel engine. The experiments were conducted at a fixed speed of 1500 rpm and various loads. The addition of hemp seed oil biodiesel and higher alcohol in diesel fuel led to a decrease in NOX, CO, and unburned HC emissions, as well as an increase in CO2 emissions.
SCIENCE AND TECHNOLOGY FOR ENERGY TRANSITION
(2023)
Article
Energy & Fuels
Zeki Yilbasi, Murat Kadir Yesilyurt, Hayri Yaman, Mevlut Arslan
Summary: The present investigation focuses on biodiesel production from industrial hemp seed oil using a single-stage homogenous catalyzed transesterification process to obtain a high yield of methyl ester. The experimental findings show that biodiesel fuels have similar performance and combustion behaviors to diesel fuel, with lower pollutant characteristics. Therefore, using biodiesel produced from industrial hemp seed oil can reduce diesel consumption and environmental pollution, especially in developing countries when the usage is controlled within 20%.
SCIENCE AND TECHNOLOGY FOR ENERGY TRANSITION
(2022)
Article
Energy & Fuels
Samet Uslu, Murat Kadir Yesilyurt, Hayri Yaman
Summary: This study aims to predict and optimize the effects of acetone/gasoline mixtures on spark ignition engine responses using artificial neural network and response surface methodology. The results show that the applied models can accurately assess the impact of acetone percentage on engine performance.
SCIENCE AND TECHNOLOGY FOR ENERGY TRANSITION
(2022)
Article
Thermodynamics
Battal Dogan, Murat Kadir Yesilyurt, Dervis Erol, Hayri Yaman
Summary: This paper presents the exergy and exergoeconomic analyses of gasoline-hexanol and gasoline-heptanol blends as additives in a spark-ignition engine. The results show variations in the power and fuel cost rates of the blends.
INTERNATIONAL JOURNAL OF EXERGY
(2022)
Article
Green & Sustainable Science & Technology
Cameron Bracken, Nathalie Voisin, Casey D. Burleyson, Allison M. Campbell, Z. Jason Hou, Daniel Broman
Summary: This study presents a methodology and dataset for examining compound wind and solar energy droughts, as well as the first standardized benchmark of energy droughts across the Continental United States (CONUS) for a 2020 infrastructure. The results show that compound wind and solar droughts have distinct spatial and temporal patterns across the CONUS, and the characteristics of energy droughts are regional. The study also finds that compound high load events occur more often during compound wind and solar droughts than expected.
Article
Green & Sustainable Science & Technology
Ning Zhang, Yanghao Yu, Jiawei Wu, Ershun Du, Shuming Zhang, Jinyu Xiao
Summary: This paper provides insights into the optimal configuration of CSP plants with different penetrations of wind power by proposing an unconstrained optimization model. The results suggest that large solar multiples and TES are preferred in order to maximize profit, especially when combined with high penetrations of wind and photovoltaic plants. Additionally, the study demonstrates the economy and feasibility of installing electric heaters (EH) in CSP plants, which show a linear correlation with the penetration of variable energy resources.
Article
Green & Sustainable Science & Technology
M. Szubel, K. Papis-Fraczek, S. Podlasek
Article
Green & Sustainable Science & Technology
J. Silva, J. C. Goncalves, C. Rocha, J. Vilaca, L. M. Madeira
Summary: This study investigated the methanation of CO2 in biogas and compared two different methanation reactors. The results showed that the cooled reactor without CO2 separation achieved a CO2 conversion rate of 91.8%, while the adiabatic reactors achieved conversion rates of 59.6% and 67.2%, resulting in an overall conversion rate of 93.0%. Economic analysis revealed negative net present worth values, indicating the need for government monetary incentives.
Article
Green & Sustainable Science & Technology
Yang Liu, Yonglan Xi, Xiaomei Ye, Yingpeng Zhang, Chengcheng Wang, Zhaoyan Jia, Chunhui Cao, Ting Han, Jing Du, Xiangping Kong, Zhongbing Chen
Summary: This study investigated the effect of using nanofiber membrane composites containing Prussian blue-like compound nanoparticles (PNPs) to relieve ammonia nitrogen inhibition of rural organic household waste during high-solid anaerobic digestion and increase methane production. The results showed that adding NMCs with 15% PNPs can lower the concentrations of volatile fatty acids and ammonia nitrogen, and increase methane yield.
Article
Green & Sustainable Science & Technology
Zhong Ge, Xiaodong Wang, Jian Li, Jian Xu, Jianbin Xie, Zhiyong Xie, Ruiqu Ma
Summary: This study evaluates the thermodynamic, exergy, and economic performance of a double-stage organic flash cycle (DOFC) using ten eco-friendly hydrofluoroolefins. The influences of key parameters on performance are analyzed, and the advantages of DOFC over single-stage type are quantified.
Article
Green & Sustainable Science & Technology
Nicolas Kirchner-Bossi, Fernando Porte-Agel
Summary: This study investigates the optimization of power density in wind farms and its sensitivity to the available area size. A novel genetic algorithm (PDGA) is introduced to optimize power density and turbine layout. The results show that the PDGA-driven solutions significantly reduce the levelized cost of energy (LCOE) compared to the default layout, and exhibit a convex relationship between area and LCOE or power density.
Article
Green & Sustainable Science & Technology
Chunxiao Zhang, Dongdong Li, Lin Wang, Qingpo Yang, Yutao Guo, Wei Zhang, Chao Shen, Jihong Pu
Summary: In this study, a novel reversible liquid-filled energy-saving window that effectively regulates indoor solar radiation heat gain is proposed. Experimental results show that this window can effectively reduce indoor temperature during both summer and winter seasons, while having minimal impact on indoor illuminance.
Article
Green & Sustainable Science & Technology
Alessandro L. Aguiar, Martinho Marta-Almeida, Mauro Cirano, Janini Pereira, Leticia Cotrim da Cunha
Summary: This study analyzed the Brazilian Equatorial Shelf using a high-resolution ocean model and found significant tidal variations in the area. Several hypothetical barrages were proposed with higher annual power generation than existing barrages. The study also evaluated the installation effort of these barrages.
Article
Green & Sustainable Science & Technology
Francesco Superchi, Nathan Giovannini, Antonis Moustakis, George Pechlivanoglou, Alessandro Bianchini
Summary: This study focuses on the optimization of a hybrid power station on the Tilos island in Greece, aiming to increase energy export and revenue by optimizing energy fluxes. Different scenarios are proposed to examine the impact of different agreements with the grid operator on the optimal solution.
Article
Green & Sustainable Science & Technology
Peimaneh Shirazi, Amirmohammad Behzadi, Pouria Ahmadi, Sasan Sadrizadeh
Summary: This research presents two novel energy production/storage/usage systems to reduce energy consumption and environmental effects in buildings. A biomass-fired model and a solar-driven system integrated with photovoltaic thermal (PVT) panels and a heat pump were designed and assessed. The results indicate that the solar-based system has an acceptable energy cost and the PVT-based system with a heat pump is environmentally superior. The biomass-fired system shows excellent efficiency.
Article
Green & Sustainable Science & Technology
Zihao Qi, Yingling Cai, Yunxiang Cui
Summary: This study aims to investigate the operational characteristics of the solar-ground source heat pump system (SGSHPS) in Shanghai under different operation modes. It concludes that tandem operation mode 1 is the optimal mode for winter operation in terms of energy efficiency.
Article
Green & Sustainable Science & Technology
L. Bartolucci, S. Cordiner, A. Di Carlo, A. Gallifuoco, P. Mele, V. Mulone
Summary: Spent coffee grounds are a valuable biogenic waste that can be used as a source of biofuels and valuable chemicals through pyrolysis and solvent extraction processes. The study found that heavy organic bio-oil derived from coffee grounds can be used as a carbon-rich biofuel, while solvent extraction can extract xantines and p-benzoquinone, which are important chemicals for various industries. The results highlight the promising potential of solvent extraction in improving the economic viability of coffee grounds pyrolysis-based biorefineries.
Article
Green & Sustainable Science & Technology
Luiza de Queiroz Correa, Diego Bagnis, Pedro Rabelo Melo Franco, Esly Ferreira da Costa Junior, Andrea Oliveira Souza da Costa
Summary: Building-integrated photovoltaics, especially organic solar technology, are important for reducing greenhouse gas emissions in the building sector. This study analyzed the performance of organic panels laminated in glass in a vertical installation in Latin America. Results showed that glass lamination and vertical orientation preserved the panels' performance and led to higher energy generation in winter.
Article
Green & Sustainable Science & Technology
Zhipei Hu, Shuo Jiang, Zhigao Sun, Jun Li
Summary: This study proposes innovative fin arrangements to enhance the thermal performance of latent heat storage units. Through optimization of fin distribution and prediction of transient melting behaviors, it is found that fin structures significantly influence heat transfer characteristics and melting behaviors.
