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.
Review
Chemistry, Physical
S. Thiyagarajan, EdwinGeo Varuvel, V. Karthickeyan, Ankit Sonthalia, Gopalakrishnan Kumar, C. G. Saravanan, B. Dhinesh, Arivalagan Pugazhendhi
Summary: Compression ignition (CI) engines using fossil diesel are major contributors to air pollution. Previous studies have attempted to replace fossil diesel with biofuels to reduce carbon dioxide emissions, but the performance has been sub-standard. Researchers have introduced hydrogen with biofuels in an attempt to improve engine performance. This study examines the effects of hydrogen addition with biodiesel/vegetable oil from various sources in CI engines.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
B. Karpanai Selvan, Soni Das, M. Chandrasekar, R. Girija, S. John Vennison, N. Jaya, P. Saravanan, M. Rajasimman, Yasser Vasseghian, N. Rajamohan
Summary: The study investigates the performance and emission characteristics of various biomass blends in a diesel engine. The results show that the AO10D blend performs well with higher thermal efficiency and lower emissions at 50% load.
Article
Energy & Fuels
Dong Lin, Zhiwei Mao, Xiang Feng, Xin Zhou, Hao Yan, Huihong Zhu, Yibin Liu, Xiaobo Chen, Yongxiao Tuo, Chong Peng, De Chen, Chaohe Yang
Summary: This review integrates important concepts of chemical kinetics, introduces the industrial processes and reaction pathways of second-generation biodiesel, discusses the kinetic effects of different reaction conditions, and presents the kinetic model of catalytic deoxygenation.
Article
Environmental Sciences
Mehmet Celik, Cihan Bayindirli, Mina Mehregan
Summary: This study investigated the effects of n-hexane and n-hexadecane additives on exhaust emissions and performance of a single-cylinder diesel engine fueled with biodiesel and diesel fuels. The results showed that rapeseed oil biodiesel was the best fuel type and hexadecane was the better additive for system optimization. The study also highlighted the importance of fuel type in optimizing emissions and engine performance.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Meixuan Wu, Ziyu Zhao, Peng Zhang, Mingding Wan, Jilin Lei, Bo Pan, Baoshan Xing
Summary: Research on the emission characteristics of environmental persistent free radicals (EPFRs) from diesel engines at different working conditions is limited. Lower engine speed and higher altitude are generally associated with higher PM10 emissions with more stable and ordered structures. EPFRs intensity in particles showed no significant change in dark, and over 70% of the EPR signals survived under UV light in a one-month aging simulation, suggesting potential long lasting and widespread risks that should be investigated extensively.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Energy & Fuels
Joonsik Hwang, Yongjin Jung, Choongsik Bae
Summary: Low-temperature combustion has the potential to reduce NOx and PM emissions, but faces challenges of high HC and CO emissions. The use of oxygenated fuels like biodiesel in PCI combustion can help suppress CO and HC emissions while maintaining low levels of NOx and PM emissions. However, biodiesel's lower heating value leads to higher fuel consumption compared to diesel, and early injection timing in PCI combustion results in higher CO and HC emissions.
Article
Energy & Fuels
Deepak Kumar Singh, Jeewan Vachan Tirkey
Summary: This research optimizes the operating parameters of a dual-fuel compression ignition engine fueled with safflower biodiesel and diesel blend to improve engine performance and reduce emissions.
PETROLEUM SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Ahmet Yakin, Rasim Behcet
Summary: The study compared the effects of different fuels on a gasoline engine, finding that E20 blended fuel had higher torque compared to pure gasoline, while ES20 blended fuel had lower torque. However, both blended fuels showed lower engine power and higher specific fuel consumption compared to the pure gasoline engine.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Surya Kanth, Sumita Debbarma
Summary: Hydrogen enrichment improves combustion and increases thermal efficiency, while reducing fuel consumption and emissions. Rice bran oil performs better than karanja biodiesel in terms of performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Environmental Sciences
Shengbo Ge, Arivalagan Pugazhendhi, Manigandan Sekar, Changlei Xia, Ashraf Elfasakhany, Kathirvel Brindhadevi, Kanda Whangchai
Summary: The study demonstrates that using Schizochytrium microalgae bio-oil as biofuel for diesel engines shows improved performance in terms of fuel efficiency and reduced harmful gas emissions, except for NOX which is slightly higher than diesel. Overall, the differences between them are negligible.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Energy & Fuels
Xiaolong Chen, Yuxiu Jiang, Ziheng Zhao
Summary: This paper investigates the effects of diesel-biodiesel blends with different exhaust gas recirculation (EGR) rates on the performance and emissions of diesel engines. A 3D-computational fluid dynamics (CFD) model is developed to analyze the in-cylinder combustion process. The results show that increasing the EGR rate leads to decreased cylinder pressure and temperature, increased fuel consumption, decreased thermal efficiency, reduced NOx emissions, and increased soot, HC, and CO emissions.
FRONTIERS IN ENERGY RESEARCH
(2023)
Article
Energy & Fuels
Ambar Gaur, Gaurav Dwivedi, Prashant Baredar, Siddharth Jain
Summary: Biodiesel has emerged as an eco-friendly and sustainable alternative to fossil fuels, but it is associated with disadvantages such as high viscosity, high NOx emission, and high brake specific fuel consumption. Research has shown that adding nanoparticles and antioxidants can improve engine performance and reduce exhaust emissions.
Article
Environmental Sciences
Shanmuga Sundaram Padmanaba Sundar, Palanimuthu Vijayabalan, Ravishankar Sathyamurthy, Abd Elnaby Kabeel, Kasi Kamalakkannan
Summary: The demand for energy due to the depletion of fossil resources has led to the exploration of biodiesel as a renewable fuel. This study investigates the use of aluminium oxide nanoparticles as additives in palm oil biodiesel alternative fuel. The results show that the addition of nanoparticles significantly improves the thermal efficiency of the engine and reduces fuel consumption.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Energy & Fuels
Salih Ozer, Erdinc Vural, Serkan Ozel
Summary: Coated engines are known to improve performance and reduce emissions, but excessive increase in nitrous oxide emissions is considered a downside. Coating materials such as Al2O3 + 13%TiO2 ceramic powders are applied to pistons and valves, and when combined with the addition of fusel oil, can effectively reduce NOx, CO, smoke opacity, and HC emissions.
Article
Green & Sustainable Science & Technology
M. Genovese, F. Piraino, P. Fragiacomo
Summary: This research proposes the concept of a hydrogen valley in southern Italy, where hydrogen is produced centrally and delivered via fuel cell hybrid trains to refueling stations, providing transportation services. The analysis from both technical and economic perspectives shows that the cost of hydrogen and energy efficiency reached competitive levels, and hydrogen rail transport offers significant benefits in terms of emissions reduction and economic gains compared to conventional diesel trains and fully electric trains.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Green & Sustainable Science & Technology
Miaomiao Liu, Payam Nejat, Pinlu Cao, Carlos Jimenez-Bescos, John Kaiser Calautit
Summary: This article provides a critical review of the performance of windcatchers, pointing out the current research gaps and issues, and proposing directions for further investigation and market prospects.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Green & Sustainable Science & Technology
Solomon Boadu, Ebenezer Otoo
Summary: Despite Africa's vast energy resources, including wind energy, the continent faces challenges in developing its wind energy industry. Northern African countries and South Africa currently dominate the wind energy sector in Africa. To uplift Africa's socio-economic status, strong political will, supportive policies, and institutional frameworks are needed to drive the development of wind energy and overcome existing challenges.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Green & Sustainable Science & Technology
E. K. Grubbs, S. M. Gruss, V. Z. Schull, M. J. Gosney, M. V. Mickelbart, S. Brouder, M. W. Gitau, P. Bermel, M. R. Tuinstra, R. Agrawal
Summary: As the global population grows, the demand for food, energy, and water will increase significantly. However, limited land availability and competition for solar resources pose challenges to resource generation technologies. In the United States, both agriculture and solar energy production have adopted densification schemes to improve yields and energy output per unit of land. This research proposes an Agrivoltaic food and energy coproduction architecture that optimizes power generation while maintaining crop productivity by implementing ideal anti-tracking during critical growth periods. This technology offers a viable pathway for widespread solar implementation throughout the contiguous United States.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Green & Sustainable Science & Technology
Han Shao, Rui Henriques, Hugo Morais, Elisabetta Tedeschi
Summary: The integration of offshore wind energy into the electric grid provides opportunities in terms of environmental sustainability and cost efficiency, but poses challenges to power quality. This survey offers a deeper understanding of disturbance detection and classification tools, exploring root causes, disturbance locations, and algorithmic solutions. It highlights synchronized waveform measurement and discusses evaluation metrics for detection and classification algorithms. Additionally, a novel system-wide monitoring framework is proposed.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Green & Sustainable Science & Technology
Eleni Davidson, Yair Schwartz, Joe Williams, Dejan Mumovic
Summary: A continued upward trend in global greenhouse gas emissions poses risks to global infrastructure and built assets. Maintaining high indoor environmental quality standards is a challenge for higher education institutions under future climates. Passive cooling mechanisms may be insufficient to tolerate predicted temperature increases. Different building typologies have varying energy demand projections.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Green & Sustainable Science & Technology
Kexin Pang, Jian Zhou, Stamatis Tsianikas, David W. Coit, Yizhong Ma
Summary: This study proposes a new framework for long-term microgrid expansion planning, using deep reinforcement learning method to consider various uncertainties and constraints. The framework aims to enhance the effectiveness of microgrid expansion planning from the perspectives of economy, resilience, and greenhouse gas emission reduction.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Green & Sustainable Science & Technology
Jun Zhao, Kangyin Dong, Xiucheng Dong
Summary: The continuous growth of global electricity penetration has provided modern energy for alleviating energy poverty, but its impact on carbon neutrality has been overlooked. The research reveals that clean electricity from traditional fossil energy and renewable energy has a positive influence on the greenhouse effect. Eradicating energy poverty can effectively alleviate the greenhouse effect, especially in non-Belt and Road Initiative (B&RI) nations.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Green & Sustainable Science & Technology
Hossein Shahbeik, Hamed Kazemi Shariat Panahi, Mona Dehhaghi, Gilles J. Guillemin, Alireza Fallahi, Homa Hosseinzadeh-Bandbafha, Hamid Amiri, Mohammad Rehan, Deepak Raikwar, Hannes Latine, Bruno Pandalone, Benyamin Khoshnevisan, Christian Sonne, Luigi Vaccaro, Abdul-Sattar Nizami, Vijai Kumar Gupta, Su Shiung Lam, Junting Pan, Rafael Luque, Bert Sels, Wanxi Peng, Meisam Tabatabaei, Mortaza Aghbashlo
Summary: This review explores the production of biocrude oil from biomass feedstocks through the process of hydrothermal liquefaction (HTL). It discusses the impact of process parameters on the quality, quantity, cost, and environmental impacts of biofuels. The review also highlights the challenges and prospects for the future development of biocrude oil.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Green & Sustainable Science & Technology
Meysam Majidi Nezhad, Mehdi Neshat, Georgios Sylaios, Davide Astiaso Garcia
Summary: Digital twins promise innovation for the marine renewable energy sector by using modern technological advances and the existing maritime knowledge frameworks. This research presents critical aspects of digital twin implementation challenges in marine energy digitalization approaches that use and combine data systems.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Green & Sustainable Science & Technology
Yeganeh Sharifian, Hamdi Abdi
Summary: This paper discusses the background and objectives of the multi-area economic dispatch problem, as well as various techniques and methods applied in this field. It also covers comprehensive formulations of the problem and important issues in the field of probabilistic MAED, along with some related concepts and suggestions.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Green & Sustainable Science & Technology
J. G. B. Churchill, V. B. Borugadda, A. K. Dalai
Summary: The increasing global energy demand and the need to reduce fossil fuel reliance have created a demand for renewable and sustainable fuel sources. This review explores the potential of tall oil, a by-product of the pulping industry, as a feedstock for biofuels. The review provides an overview of tall oil production, purification, and treatment, and investigates recent trends and barriers towards tall oil-derived biofuels.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Green & Sustainable Science & Technology
David C. Broadstock, Xiangnan Wang
Summary: This study provides a general review of research on district cooling, identifying key topics and themes and highlighting potential research priorities for future studies.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Green & Sustainable Science & Technology
L. Scharnhorst, D. Sloot, N. Lehmann, A. Ardone, W. Fichtner
Summary: This study investigates and analyzes the barriers to demand response in industrial and commercial sectors, highlighting their significance. Concerns about diminished product quality, disruptions to production processes, human resource management, and revenue uncertainty are identified as the most frequently cited barriers. Overcoming these barriers requires bridging knowledge gaps, allocating sufficient resources, and adapting external incentives and policies.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Green & Sustainable Science & Technology
Tong Feng, Yuechi Sun, Yating Shi, Jie Ma, Chunmei Feng, Zhenni Chen
Summary: Air pollution is a significant global challenge, and policymakers have implemented policies to reduce it. Evaluating the effectiveness of these policies is critical, and our study reveals trends and gaps in air pollution policy research. We found that research has shifted from focusing solely on air pollutants to including methodologies, policies, and health implications. China has emerged as a major contributor in this field of research.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)