Article
Energy & Fuels
Vivek Kumar Nema, Alok Singh, Prem Kumar Chaurasiya, Tapan Kumar Gogoi, Tikendra Nath Verma, Damodar Tiwari
Summary: The current automobile industry heavily relies on petroleum supplies, but the depletion of petrol fuel reserves is driving research in alternative fuels. Biofuels, produced from plants and natural waste, have the potential to reduce CO2 levels and are renewable and relatively cheaper than conventional fossil fuels.
Article
Engineering, Aerospace
Farid C. Christo, Yeshayahou Levy, Mario Costa, Gabrian A. F. Balelang
Summary: Experimental testing and validated CFD models were used to evaluate the performance of the FC4GT flameless gas turbine combustor under different operating conditions. The results showed that the combustor exhibited uniform flow fields and low NOx emissions when using methane or hydrogen as fuel. Volumetric histograms of temperature and oxygen were identified as useful tools for assessing combustion uniformity and NOx emissions.
AEROSPACE SCIENCE AND TECHNOLOGY
(2021)
Article
Energy & Fuels
Upendra Rajak, Manoj Panchal, Prerana Nashine, Tikendra Nath Verma, Rohit Kumar, Arivalagan Pugazhendhi
Summary: The goal of this study is to find a way to run a diesel engine entirely on spirulina microalgae (SMA) and base fuel (BF) in a dual fuel mode. The effects of keeping the injection settings and compression ratio fixed on the performance and burning of the diesel engine running on SMA-BF are examined. The results show that the SMA20BF80 blend has a slightly lower efficiency and higher fuel consumption compared to BF, but it emits less NOx and smoke at high load.
Article
Energy & Fuels
Rafal Buczynski, Ronald Kim
Summary: This article discusses the optimization of twin heating flue construction to reduce NOx emissions. Through modifications such as adjusting inlet locations and sizes and improving internal flue gas re-circulation, the NOx emissions from COG and MG have been successfully reduced.
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
Environmental Sciences
Felix Leach
Summary: Modern internal combustion engine vehicles are equipped with advanced exhaust aftertreatment systems that can reduce tailpipe emissions to nearly zero. However, research suggests that these vehicles are unlikely to clean the ambient air, although significant pollution reduction is possible in certain specific scenarios.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Energy & Fuels
Arda Albayrak, Onur Gezer, Orkun Ozener, Cihan Buyuk, Muammer Ozkan
Summary: Today, diesel engines are a major contributor to air pollution due to their high pollutant emissions. In order to meet stringent regulations and upcoming EURO VII standards, manufacturers need to develop new strategies to reduce nitrogen oxides (NOx) emissions while still meeting market demands.
Article
Thermodynamics
Pulkit Kumar, Ajit Kumar Parwani, Mohammad Mehdi Rashidi
Summary: This research presents a theoretical design and experimental investigation of a Diesel engine retrofitted with devices for simultaneous mitigation of NOx and CO2 emissions. The results show that the combination of EGR and carbon capture unit can effectively reduce NOx emissions while capturing CO2, providing a potential solution to meet the stringent European Standard norms.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Environmental Sciences
A. Anderson, M. Vignesh Kumar, Beata Gavurov, Hui Li, Changlei Xia, Xiumei Zhang
Summary: The study examined the effects of spirulina microalgae blends and Fe2O3 nanoparticles in a diesel engine. The addition of microalgae blends marginally increased engine performance, while the addition of Fe2O3 nanoparticles significantly increased brake thermal efficiency and decreased fuel consumption. Emissions rate and smoke intensity were lower compared to diesel, but NOx increased due to cylinder temperatures. This research highlights the potential of microalgae as a sustainable biofuel source and the positive effects of adding Fe2O3 nanoparticles.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Nandakumar Chinnamuthu, Saravanan Chidambaram Ganapathy, Vikneswaran Malaiperumal, Edwin Geo Varuvel, Vallinayagam Raman, Poonguzhali Boologarajan, Ashok Kannan
Summary: By modifying the inlet manifold design with inclined nozzle-like provision angles, the study aimed to enhance the turbulence of direct injection diesel engines. Results showed that the 60 degrees modified manifold with a single pass exhibited better combustion and emission characteristics compared to regular inflow manifolds due to improved turbulence levels.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Energy & Fuels
A. K. Mohamed Farmaan, R. Mukund, S. Arun Prakash, P. Pradeep, V. Antony Aroul Raj, M. Senthil Kumar
Summary: The study investigates the combustion and emission characteristics of Pure Mahua oil as an alternative to diesel, analyzing experimentally and theoretically to confirm its potential as a substitute for diesel fuel.
Article
Engineering, Chemical
Yuanye Zhou, Ioanna Aslanidou, Konstantinos Kyprianidis
Summary: The effect of spray operation conditions on the mixing uniformity of reactant ammonia vapor in the deNOx process occurring in a power station's furnace was investigated through experimental validated CFD simulation. The study found that spray momentum ratio, initial droplet size, and initial ammonia concentration all affect the mixing uniformity of ammonia vapor. It was also observed that the impact of spray momentum ratio mainly comes from the furnace inlet velocity rather than the nozzle inlet velocity. Gravity should not be neglected in the analysis. The method described in this study provides a systematic way to study the effects of nozzle operation conditions on the deNOx process.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Thermodynamics
Mukesh Kumar, Bijan Kumar Mandal, Aritra Ganguly, Ravikant Ravi, Tabish Alam, Md Irfanul Haque Siddiqui, Sayed M. Eldin
Summary: The main objective of this study is to determine the performance, combustion, and emission analysis of compression ignition engines fueled with Chlorella Protothecoides microalgal biodiesel (CPMB). The results show that the performance of B20 blends is nearly identical to diesel, making it a feasible alternative fuel for engines.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Computer Science, Information Systems
Mehmet Ilter Ozmen, Abdurrahim Yilmaz, Cemal Baykara, Osman Azmi Ozsoysal
Summary: This study compares different intelligent time series modelling techniques for predicting NOx emission and fuel consumption of a diesel engine, and finds that the RegARMA technique performs the best in terms of model performance.
Article
Chemistry, Physical
Jiseop Lee, Nam Il Kim
Summary: Adding hydrogen to methane can reduce CO2 emissions from combustion systems, but it also presents challenges. This study investigated the combustion characteristics of a turbulent fuel jet with coaxial air under elevated pressures. The results identified three clear flame stabilization modes, with the inner-lifted mode demonstrating the best combustion performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Computer Science, Interdisciplinary Applications
Yan Cui, Jure Ravnik, Matjaz Hribersek, Paul Steinmann
COMPUTERS & FLUIDS
(2020)
Article
Mathematics, Applied
J. Iljaz, L. C. Wrobel, T. Gomboc, M. Hribersek, J. Marn
Article
Physics, Multidisciplinary
Tibor Besenic, Milan Vujanovic, Jakov Baleta, Klaus Pachler, Niko Samec, Matjaz Hribersek
Article
Materials Science, Multidisciplinary
Fang Wang, Qiang Wang, Jakov Baleta, Baokuan Li
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
(2020)
Article
Thermodynamics
Nadia Cerone, Francesco Zimbardi, Luca Contuzzi, Jakov Baleta, Damijan Cerinski, Raminta Skvorcinskiene
ENERGY CONVERSION AND MANAGEMENT
(2020)
Article
Engineering, Multidisciplinary
O. Verhnjak, M. Hribersek, P. Steinmann, J. Ravnik
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2020)
Article
Thermodynamics
Dan Zheng, Jin Wang, Zhanxiu Chen, Jakov Baleta, Bengt Sunden
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2020)
Article
Environmental Sciences
Hrvoje Mikulcic, Jakov Baleta, Xuebin Wang, Neven Duic, Raf Dewil
Summary: This paper discusses the importance of green development in energy, water, and environment systems, emphasizing the need to address environmental issues in these systems to preserve resources for future generations.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Engineering, Multidisciplinary
Tomica Visak, Jakov Baleta, Zdravko Virag, Milan Vujanovic, Jin Wang, Fengsheng Qi
Summary: This study presents a multi-objective optimization of an aspirating smoke detection system using pipeline configuration variation to balance specific transport time and volume flow at the sampling points' location, resulting in improved system performance.
OPTIMIZATION AND ENGINEERING
(2021)
Article
Thermodynamics
Filip Juric, Marija Stipic, Niko Samec, Matjaz Hribersek, Stanislav Honus, Milan Vujanovic
Summary: The study compares and validates the flamelet generated manifold (FGM) and Three-zones extended coherent flame model (ECFM-3Z) for multiphase reactive processes inside compression ignition engines. Both models show differences in predicting ignition delay and combustion processes for single and multiple injection strategies, and demonstrate good predictive capabilities on nitric oxide emission trends.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Engineering, Chemical
Aljaz Klasinc, Gregor Drago Zupancic, Matjaz Hribersek, Ales Hribernik, Aleksandra Lobnik, Matej Zadravec
Summary: The objective of this study was to determine the density of anaerobic granules at different heights in a full-scale Upflow Anaerobic Sludge Bed reactor. The density was calculated using measured settling velocities and a mathematical model based on the Stokes model. The results showed that the granule densities at different heights were independent of the reactor height.
Article
Energy & Fuels
Jure Ravnik, Gorazd Bombek, Ales Hribernik, Timi Gomboc, Matej Zadravec, Aleks Kapun, Grega Hrovat, Jure Gradisek, Matjaz Hribersek
Summary: This article investigates the energy consumption of membrane microfiltration in intermittent operation mode. By conducting experiments and computational analysis, an energy intake model is developed and evaluated for different types and conditions (clean and partially clogged) of filters. The results show that the clean filter case has the highest energy intake.
Article
Energy & Fuels
Zia ur Rahman, Xuebin Wang, Jiaye Zhang, Jakov Baleta, Millan Vujanovic, Houzhang Tan
Summary: Pressurized oxy-combustion is a promising technology for carbon capture, utilization, and storage in coal utilization. Experimental results show that increasing pressure can improve the efficiency of SNCR; however, increasing oxygen concentration at high pressure reduces the efficiency of SNCR.
JOURNAL OF THE ENERGY INSTITUTE
(2021)
Article
Thermodynamics
Pengcheng Zhao, Jingang Wang, Liming Sun, Yun Li, Haiting Xia, Wei He
Summary: The production of green hydrogen through water electrolysis is crucial for renewable energy utilization and decarbonization. This research explores the optimal electrode configuration and system design of compactly-assembled industrial electrolyzer. The findings provide valuable insights for industrial application of water electrolysis equipment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
V. Baiju, P. Abhishek, S. Harikrishnan
Summary: Thermally driven adsorption desalination systems (ADS) have gained attention as an eco-friendly solution for water scarcity. However, they face challenges related to low water productivity and scalability. To overcome these challenges, integrating ADS with other desalination technologies can create a small-scale hybrid system. This study proposes integrating ADS with a Thermo Electric Dehumidification (TED) unit to enhance its performance.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
C. X. He, Y. H. Liu, X. Y. Huang, S. B. Wan, Q. Chen, J. Sun, T. S. Zhao
Summary: A decentralized centroid multi-path RC network model is constructed to improve the temperature prediction accuracy compared to traditional RC models. By incorporating multiple heat flow paths and decentralizing thermal capacity, a more accurate prediction is achieved.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chaoying Li, Meng Wang, Nana Li, Di Gu, Chao Yan, Dandan Yuan, Hong Jiang, Baohui Wang, Xirui Wang
Summary: There is an urgent need to shift away from heavy dependence on fossil fuels and embrace renewable energy sources, particularly in the energy-intensive oil refining process. This study presents an innovative concept called the Solar Oil Refinery, which applies solar energy in oil refining. A solar multi-energies-driven hybrid chemical oil refining system that utilizes solar pyrolysis and electrolysis has been developed, significantly improving solar utilization efficiency, cracking rate, and hydrogen yield.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chao Ma, Guanghui Wang, Dingbiao Wang, Xu Peng, Yushen Yang, Xinxin Liu, Chongrui Yang, Jiaheng Chen
Summary: This study proposes a bio-inspired fish-tail wind rotor to improve the wind power efficiency of the traditional Savonius rotor. Through transient simulations and orthogonal experiments, the key factors affecting the performance are identified. A response surface model is constructed to optimize the power coefficient, resulting in an improvement of 9.4% and 6.6% compared to the Savonius rotor.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sina Bahmanziari, Abbas-Ali Zamani
Summary: This paper proposes a new framework for improving electrical energy harvesting from piezoelectric smart tiles through a combination of magnetic plucking, mechanical impact, and mechanical vibration force mechanisms. Experimental results demonstrate a significant increase in energy yield and average energy harvesting time compared to other mechanisms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Nanjiang Dong, Tao Zhang, Rui Wang
Summary: This study establishes a multiobjective mixed-variable configuration optimization model for a comprehensive combined cooling, heating, and power energy system, and proposes an efficient generating operator to optimize this model. The experimental results show that the proposed algorithm performs better than other state-of-the-art algorithms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Ahmed E. Mansy, Eman A. El Desouky, Tarek H. Taha, M. A. Abu-Saied, Hamada El-Gendi, Ranya A. Amer, Zhen-Yu Tian
Summary: This study aims to convert office paper waste into bioethanol through a sustainable pathway. The results show that physiochemical and enzymatic hydrolysis of the waste can yield a high glucose concentration. The optimal conditions were determined using the Box-Behnken design, and a blended membrane was used for ethanol purification.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sven Klute, Marcus Budt, Mathias van Beek, Christian Doetsch
Summary: Heat pumps are crucial for decarbonizing heat supply, and steam generating heat pumps have the potential to decarbonize the industrial sector. This paper presents the current state, technical and economic data, and modeling principles of steam generating heat pumps.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Le Zhang, To-Hung Tsui, Yen Wah Tong, Pruk Aggarangsi, Ronghou Liu
Summary: This study investigates the effectiveness of a current-carrying-coil-based magnetic field in promoting anaerobic digestion of chicken manure. The results show that the applied magnetic field increases methane yield, decreases carbon dioxide production, and reduces the concentration of ammonia nitrogen. Microbial community analysis reveals the enrichment of certain methanogenic genera and enhanced metabolic pathways. Pilot-scale experiments confirm the technical effectiveness of the magnetic field assistance in enhancing anaerobic digestion of chicken manure.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Bo Chen, Ruiqing Ma, Yang Zhou, Rui Ma, Wentao Jiang, Fan Yang
Summary: This paper presents an advanced energy management strategy for fuel cell hybrid electric heavy-duty vehicles, focusing on speed planning and energy allocation. By utilizing predictive co-optimization control, this strategy ensures safe inter-vehicle distance and minimizes energy demand. Simulation results demonstrate the effectiveness of the proposed method in reducing fuel cell degradation cost and overall operation cost.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Fabio Fatigati, Roberto Cipollone
Summary: Organic Rankine Cycle-based microcogeneration systems that use solar sources to generate electricity and hot water can help reduce CO2 emissions in residential energy-intensive sectors. The adoption of a recuperative heat exchanger in these systems improves efficiency, reduces thermal power requirements, and saves on electricity costs.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Lipeng He, Renwen Liu, Xuejin Liu, Xiaotian Zheng, Limin Zhang, Jieqiong Lin
Summary: This research proposes a piezoelectric-electromagnetic hybrid energy harvester (PEHEH) for low-frequency wave motion and self-sensing wave environment monitoring. The PEHEH shows promising power output and the ability to self-power and self-sense the wave environment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Shangling Chu, Yang Liu, Zipeng Xu, Heng Zhang, Haiping Chen, Dan Gao
Summary: This paper studies a distributed energy system integrated with solar and natural gas, analyzes the impact of different parameters on its energy utilization and emissions reduction, and obtains the optimal solution through an optimization algorithm. The results show that compared to traditional separation production systems, this integrated system achieves higher energy utilization and greater reduction in carbon emissions.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Qingpu Li, Yaqi Ding, Guangming Chen, Yongmei Xuan, Neng Gao, Nian Li, Xinyue Hao
Summary: This paper proposes and studies a piston-type thermally-driven pump with a structure similar to a linear compressor, aiming to eliminate the high-quality energy consumption of existing pumps and replace mechanical pumps. The coupling mechanism of working fluid flow and element dimension is analyzed based on force analysis, and experimental data analysis is used to determine the pump operation stroke. Theoretical simulation is conducted to analyze the correlation mechanism of the piston assembly. The research shows that the thermally-driven pump can greatly reduce power consumption and has potential for industrial applications.
ENERGY CONVERSION AND MANAGEMENT
(2024)