Article
Thermodynamics
Naseem Khayum, S. Anbarasu, S. Murugan
Summary: This study aims to run a diesel engine completely with renewable sources such as biogas and waste cooking oil methyl ester. The research investigates the combined effect of fuel injection parameters and compression ratio on the performance of a modified diesel engine running on biogas-biodiesel. Results showed that specific parameters led to improved fuel efficiency and reduced emissions compared to a standard diesel engine.
Article
Chemistry, Physical
Patrick Rorimpandey, Ho Lung Yip, Ales Srna, Guanxiong Zhai, Armin Wehrfritz, Sanghoon Kook, Evatt R. Hawkes, Qing Nian Chan
Summary: This study investigates the ignition and combustion characteristics of diesel pilot and hydrogen jets under simulated compression-ignition engine conditions. The results show that the injection sequence and timing between injections significantly affect the combustion process. Igniting the hydrogen jet before the diesel pilot leads to better combustion performance, while delaying the ignition of the hydrogen jet reduces its combustion efficiency.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Environmental Sciences
Gavaskar Thodda, Arun Kathapillai, Venkata Ramanan Madhavan, Murugapoopathi Saravanamuthu
Summary: The predicted scarcity, increasing cost of petroleum fuels, and environmental degradation are driving researchers to find alternative fuels. This study investigated the use of a dual-fuel system (acetylene gas and diesel) in a compression ignition engine to reduce emissions and improve fuel efficiency. The results showed that a gas rate of 6 lpm provided the best fuel consumption efficiency of 30.7%.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Energy & Fuels
Pali Rosha, Sandeep Kumar, P. Senthil Kumar, C. N. Kowthaman, Saroj Kumar Mohapatra, Amit Dhir
Summary: The experimental study investigated the effects of using hydrogen-enriched biogas and diesel in a compression ignition engine at variable compression ratios. Results showed that utilizing hydrogen-enriched biogas at a higher compression ratio significantly improved engine performance and reduced emissions.
Article
Thermodynamics
Jisoo Shin, Sungwook Park
Summary: Due to environmental regulations, the use of ammonia as a carbon-free fuel for internal combustion engines is gaining attention. This study investigated the combustion characteristics of an ammonia-diesel dual-fuel engine through numerical simulation. The results showed that advanced injection timing and high ammonia energy fraction can significantly improve efficiency and reduce greenhouse gas emissions.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Green & Sustainable Science & Technology
Josimar Souza Rosa, Giovani Dambros Telli, Carlos Roberto Altafini, Paulo Roberto Wander, Luiz Alberto Oliveira Rocha
Summary: The study explores the feasibility of using ethanol as a partial fuel in a generator set by analyzing technical, environmental, and economic aspects. Tests conducted on a diesel single-cylinder engine with an added PFI system for ethanol supply showed that ethanol effectively increased ignition delay and reduced combustion duration, though without improving efficiency or reducing fuel consumption. Ethanol also led to decreased CO and NOx emissions, but resulted in a slight increase in operational costs compared to using only diesel fuel.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Green & Sustainable Science & Technology
Wanchen Sun, Mengqi Jiang, Liang Guo, Hao Zhang, Zhiqin Jia, Zhenshan Qin, Wenpeng Zeng, Shaodian Lin, Genan Zhu, Shenyue Ji, Yimo Zhu
Summary: This study explores the application potential of renewable methanol and direct dual fuel stratification (DDFS) technology in marine internal combustion engines. By optimizing the fuel injection strategy for a marine methanol/diesel DDFS engine, it is found that the fuel mixing process plays a crucial role in the combustion state switching. A strategy with earlier start of diesel injection (SOID) compared to the start of methanol injection (SOIM) and an appropriately extended injection interval achieves better engine performance. Furthermore, the optimized methanol two-stage injection strategy improves fuel economy while causing a decrease in combustion completeness and increase in emissions.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Green & Sustainable Science & Technology
M. Feroskhan, Saleel Ismail, Gobinath Natarajan, Sreekanth Manavalla, T. M. Yunus Khan, Shaik Dawood Abdul Khadar, Mohammed Azam Ali
Summary: Alternative fuels offer a promising solution to mitigate pollution from conventional IC engines, reducing emissions without compromising performance. This research investigates the use of simulated biogas and neat diesel in a compression ignition engine under dual fuel mode. The study finds that biogas can provide up to 90% of the total energy input when used as a fuel in the engine.
Article
Engineering, Marine
Beidong Zhang, Yankun Jiang, Yexin Chen
Summary: This article proposes a new calibration method to convert marine diesel engines into LNG-diesel dual-fuel engines and investigates the fuel substitution ratio, economy, and particulate matter emission characteristics of the calibrated engine. The calibration method uses peak pressure and exhaust temperature as constraints and diesel mass substitution ratio as the objective function.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Xinlei Liu, Hu Wang, Zunqing Zheng, Mingfa Yao
Summary: A comprehensive numerical study on the combustion and emission characteristics of a NG-diesel dual-fuel engine operating at high load conditions was conducted, proposing a pathway to achieve highly efficient and clean combustion. It was found that utilizing at least a 40% EGR rate is necessary to meet NOx Euro VI regulation limits, while other parameters such as injection pressure and nozzle number also play important roles in promoting engine efficiency and reducing emissions.
Article
Thermodynamics
Qian Xiong, Zhangyi Wan, Long Liu, Baolin Zhao
Summary: Dual fuel strategy is a promising way to achieve low-carbon emission for marine engines. The effects of compression ratio, pre-chamber number, and energy proportion of pilot diesel on combustion process and pressure oscillation in natural gas/diesel dual fuel low speed marine engine were investigated. It was found that increasing pre-chamber number effectively reduced the maximum amplitude of pressure oscillation in the main chamber. The optimal energy proportion of pilot diesel was determined to be around 1.0% considering thermal efficiency, pressure oscillation, and NOx emission.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Article
Engineering, Multidisciplinary
K. Siva Prasad, S. Srinivasa Rao, V. R. K. Raju
Summary: This study investigates the effects of Compression Ratio (CR) and Fuel Injection Pressure (FIP) on the performance and emissions of a Compression Ignition (CI) engine fueled with butanol/diesel blends. The experimental results show that increasing CR and FIP improves engine performance while reducing emissions, with an optimum FIP value for each test fuel. Different blends require different FIP values for optimal performance, with higher CR and FIP generally leading to better performance and lower emissions.
ALEXANDRIA ENGINEERING JOURNAL
(2021)
Article
Energy & Fuels
Sunil Kumar Mahla, Seyed Mohammed Safieddin Ardebili, Himanshu Sharma, Amit Dhir, Geetesh Goga, Hamit Solmaz
Summary: The combination of biodiesel, higher alcohols, and gaseous fuel as alternative fuels for diesel engines has shown positive impacts on performance and emissions characteristics, with the addition of n-butanol in diesel fuel showing favorable effects on biogas operated dual-fuel engines. An optimization process using multi-criteria decision analysis and response surface method techniques found that the optimal values of engine load, n-butanol concentration, and biogas flow rate were 78.89%, 20%, and 1.37 kg/h respectively, resulting in improved efficiency and reduced emissions.
Article
Energy & Fuels
R. Rabello de Castro, P. Brequigny, C. Mounaim-Rousselle
Summary: Syngas, a gaseous biofuel produced by gasification of biomass, shows potential in reducing carbon emissions of internal combustion engines. This study investigates the effect of different syngas compositions on engine performance and exhaust emissions and establishes relationships between these factors. Results indicate high thermal efficiencies and reduced NOx and soot emissions, but increased CO and Total HC emissions.
Article
Energy & Fuels
Jie Liu, Qiang Guo, Jiayong Guo, Fan Wang
Summary: This study optimized the parameters of a diesel/natural gas dual fuel engine using a combination of genetic algorithm and 3D CFD engine combustion simulation. The results showed that diesel injection timing is postponed with increasing pilot diesel quantity, and specific energy consumption is achieved within certain fuel ratio and injection timing ranges. The open bowl geometry was preferred for dual fuel combustion, while compression ratios and EGR rates concentrated to optimal values and swirl ratios showed wider distribution. Temporal and spatial analysis indicated that higher diesel fuel ratio promoted methane oxidation, while lower EGR rate and higher diesel injection quantity also played a role in methane oxidation.
Article
Energy & Fuels
Bhaskor J. Bora, Ujjwal K. Saha
JOURNAL OF ENERGY RESOURCES TECHNOLOGY-TRANSACTIONS OF THE ASME
(2016)
Article
Engineering, Mechanical
Bhaskor J. Bora, Ujjwal K. Saha
JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME
(2015)
Article
Green & Sustainable Science & Technology
Bhaskor J. Bora, Ujjwal K. Saha
Article
Thermodynamics
Bhaskor J. Bora, Ujjwal K. Saha
APPLIED THERMAL ENGINEERING
(2016)
Article
Energy & Fuels
Bhaskor J. Bora, Ujjwal K. Saha
JOURNAL OF ENERGY ENGINEERING
(2016)
Article
Green & Sustainable Science & Technology
Bhaskor J. Bora, Ujjwal K. Saha
Article
Energy & Fuels
Bhaskor J. Bora, Ujjwal K. Saha
JOURNAL OF ENERGY ENGINEERING
(2016)
Article
Energy & Fuels
Bhaskor J. Bora, Ujjwal K. Saha
JOURNAL OF ENERGY ENGINEERING
(2017)
Article
Energy & Fuels
Bhaskor J. Bora, Ujjwal K. Saha
JOURNAL OF ENERGY ENGINEERING
(2017)
Article
Energy & Fuels
Biplab K. Debnath, Bhaskor J. Bora, Niranjan Sahoo, Ujjwal K. Saha
JOURNAL OF ENERGY ENGINEERING
(2014)
Proceedings Paper
Engineering, Mechanical
Bhaskor J. Bora, Ujjwal K. Saha, S. Chatterjee, Vijay Veer
FLUID MECHANICS AND FLUID POWER - CONTEMPORARY RESEARCH
(2017)
Proceedings Paper
Engineering, Mechanical
Vijay S. Verma, Bhaskor J. Bora, Achinta Sarkar, Ujjwal K. Saha
PROCEEDINGS OF THE ASME 12TH BIENNIAL CONFERENCE ON ENGINEERING SYSTEMS DESIGN AND ANALYSIS - 2014, VOL 2
(2014)
Proceedings Paper
Engineering, Mechanical
Bhaskor J. Bora, Ujjwal K. Saha
PROCEEDINGS OF THE ASME 12TH BIENNIAL CONFERENCE ON ENGINEERING SYSTEMS DESIGN AND ANALYSIS - 2014, VOL 2
(2014)
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)
