Article
Engineering, Environmental
Osama Majeed Butt, Muhammad Shakeel Ahmad, Teong Kai Lun, Hang Seng Che, H. Fayaz, Nasrudin Abd Rahim, Krzysztof K. K. Koziol, Neyara Radwan, Mohammad Amir Khan, Nadeem A. Khan, Lakhveer Singh
Summary: This study explores the techno-economic feasibility of a solar photovoltaic (PV) integrated water electrolysis and waste incineration system. Three different strategies were envisioned, with PV + Battery consuming less energy compared to auto-ignition and PV + Secondary-Electrolyzer. However, the capital cost of PV + Battery was higher. In terms of energy consumption relative to waste input, PV + Battery showed the highest reduction, while cost-wise, it was projected to be more expensive in the long run.
Article
Thermodynamics
Paulina Wienchol, Agnieszka Korus, Andrzej Szlek, Mario Ditaranto
Summary: This study analyzed the thermal degradation of municipal solid waste under different atmospheric conditions and determined the kinetic data. Results showed that gasification reactions with carbon dioxide occurred during combustion under CO2 atmosphere. The presence of oxygen accelerated the thermal decomposition process. These findings are important for the design of waste oxy-combustion chambers.
Article
Thermodynamics
Agata Mlonka-Medrala, Tadeusz Dziok, Aneta Magdziarz, Wojciech Nowak
Summary: In this study, the potential of Refuse Derived Fuel (RDF) in Poland was investigated, revealing significant limitations due to its high heterogeneity and contamination. Samples of fuel and fly ashes were analyzed to determine their composition and characteristics, while the impact of flue gas treatment on ash morphology and composition was also studied.
Article
Thermodynamics
Giorgio Vilardi, Nicola Verdone
Summary: This work provides a complete exergy analysis of municipal solid waste incineration process, with considerations on increasing O2 %mol and adopting oxy-combustion conditions. Flue gas recirculation and oxygen-enriched air were found to improve exergy efficiency and reduce environmental impact. However, limited exergetic improvements were observed due to the exergy cost of the air separation unit.
Article
Environmental Sciences
Ming Zhang, Junxiao Wei, Huan Li, Yang Chen, Jianguo Liu
Summary: China, as the largest developing country, has been facing an increasing amount of municipal solid waste (MSW). Incineration is the mainstream method for MSW treatment, but air pollution emissions have been a major concern. The Chinese government is committed to implementing MSW classification, but specific models and reduction targets are still unclear. This study projected scenarios of air pollution emissions until 2030 based on different MSW classification models and diffusion rates of ultra-low emission technology. The results provide valuable references for MSW management and air pollution reduction in China.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Computer Science, Information Systems
Osama Majeed Butt, Saira Bibi, Muhammad Shakeel Ahmad, Hang Seng Che, Taiba Zahid, Sameena Bibi, Nasrudin Abd Rahim
Summary: Municipal solid waste (MSW) management is a challenge impacting environmental sustainability. Incineration technology is the most mature and feasible method for MSW management. This study investigates the feasibility of using hydrogen as a primary fuel for MSW incineration. Testing different moisture percentages of waste, it was found that the hydrogen-based incinerator performed best on paper and food waste but had decreased performance with higher moisture content.
Article
Thermodynamics
Hendrik Nicolai, Paulo Debiagi, Xu Wen, Louis Dressler, Anna Massmeyer, Johannes Janicka, Christian Hasse
Summary: This work introduces a new approach based on Large-Eddy Simulation (LES) coupled with a flamelet description of the gas-phase and seamless detailed solid-fuel kinetics, and applies it to a self-sustained oxy-fuel coal combustion chamber. The approach enables a detailed description of the turbulent flow field, mixing, and heat transfer, including thermal radiation and the radiative transport equation. The flamelet description of the gas phase allows for accurate and computationally efficient representation of turbulence-chemistry interactions. Coupled with a solid-fuel kinetic mechanism, it allows for seamless simulation of the particle conversion process.
COMBUSTION AND FLAME
(2022)
Article
Engineering, Environmental
Mingxue Xin, Yingjie Sun, Yinkai Wu, Weihua Li, Junquan Yin, Yuyang Long, Xuebin Wang, Ya-nan Wang, Yaomin Huang, Huawei Wang
Summary: The standard methods for assessing the leaching risk of heavy metals from MSW incineration fly ash in a landfill are not effective. This study investigated the leaching characteristics of Cd, Cu, Pb, Zn, Cr, and Ni during the co-landfilling of chelating agents or phosphate stabilized fly ash and MSW under rainfall conditions. The results showed that evaluating the leaching risk according to actual disposal scenarios is a more effective method.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Green & Sustainable Science & Technology
R. Garcia, M. P. Gonzalez-Vazquez, F. Rubiera, C. Pevida, M. Gil
Summary: It has been demonstrated through research that copelletization of RDF and PIN can produce high-quality pellets that meet industrial use and energy recovery standards. This process can be tailored to different product requirements under the same operational conditions, enhancing economic and environmental benefits of energy recovery and waste valorization.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Energy & Fuels
Hendrik Nicolai, Paulo Debiagi, Johannes Janicka, Christian Hasse
Summary: Oxy-fuel combustion combined with carbon capture technologies has the potential to rapidly reduce CO2 emissions in coal-fired power plants. However, the combustion of solid fuels in an oxygen-carbon dioxide environment is not fully understood. This study aims to analyze the impact of oxygen content on thermo-chemical conversion by applying a recently developed approach to a range of oxy-fuel swirl flames.
Article
Green & Sustainable Science & Technology
Hetian Chi, Miguel A. Pans, Chenggong Sun, Hao Liu
Summary: In this study, the use of molochite and dolomite as bed additives in a fluidised bed combustor was investigated to counter agglomeration during the combustion of wheat straw and miscanthus pellets. The results showed that dolomite was superior to molochite in prolonging defluidisation time when firing wheat straw. Lime addition to fuel had the most significant improvement on combustion performance for both fuels. The oxy-fuel combustion atmosphere had a great impact on the effectiveness of dolomite but little influence on the effectiveness of molochite.
Article
Energy & Fuels
Chaowei Wang, Chang'an Wang, Guantao Tang, Jinming Zhang, Xinyue Gao, Defu Che
Summary: This study investigates the co-combustion features of antibiotic filter residue (AFR) and semi-coke (SC) under oxy-fuel condition. The physical-chemical properties and reactivity of the solid samples are also examined. The results show that the volatile matter of AFR leads to a larger mass loss compared to SC. The proportion of SC in the blend positively influences the conversion ratio of fuel-N to NO (X-NO). The X-NO and combustion efficiency increase with higher oxygen content in the atmosphere. Increasing temperature enhances the combustion reactivity of the blend.
Article
Energy & Fuels
Youngsun Kwon, Kyunghoon Choi, Yong-Chul Jang
Summary: This study estimated the greenhouse gas (GHG) emissions from the incineration of municipal solid waste (MSW) in Seoul. The results showed that in 2021, Seoul incinerated 741 kt/yr of combustible waste, resulting in 545 kt CO2 eq emissions, which was 7.5 times higher than in 2000. Plastic waste was the dominant contributor to GHG emissions. Scenario analysis indicated that waste reduction and increased recycling rate could significantly reduce GHG emissions from incineration.
Article
Thermodynamics
Ali Cemal Benim, Cansu Deniz Canal, Yakup Erhan Boke
Summary: Computational investigation of swirling pulverized coal and biomass flames for oxy-combustion reveals that the Reynolds Stress Model (RSM) captures unsteady dynamics better than the k-epsilon model. Predicted velocities show better agreement with measurements using RSM. However, both models underestimate the measurements, with discrepancies quantified in peak values of axial velocity. Biomass flame is predicted to be nearly twice as long as coal flame.
Article
Thermodynamics
Lei Cai, Liping Tan, Ying Liang, Xiang Yin, Chunming Liu, Yanwen Guan
Summary: The study explores the impact of sulfur content on the performance of the oxy-fuel combustion system, finding that the energy efficiency of the recycled flue gas system is relatively higher.
APPLIED THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Paulina Wienchol, Agnieszka Korus, Andrzej Szlek, Mario Ditaranto
Summary: This study analyzed the thermal degradation of municipal solid waste under different atmospheric conditions and determined the kinetic data. Results showed that gasification reactions with carbon dioxide occurred during combustion under CO2 atmosphere. The presence of oxygen accelerated the thermal decomposition process. These findings are important for the design of waste oxy-combustion chambers.
Article
Thermodynamics
Paulina Copik, Agnieszka Korus, Andrzej Szlek, Mario Ditaranto
Summary: The increased urbanization rate has led to an increase in waste generation, requiring rapid development and implementation of optimal waste management strategies. This study investigated the thermal decomposition of spent coffee grounds and textiles under different atmospheres using various analytical techniques. The results showed differences in the calorific pyrolytic gas yield and combustion performance of the waste materials. The findings contribute to a better understanding of thermochemical degradation of waste and the development of optimal waste utilization routes.
Article
Robotics
Jaroslaw Domin, Marcin Gorski, Ryszard Bialecki, Jakub Zajac, Krzysztof Grzyb, Pawel Kielan, Wojciech Adamczyk, Ziemowit Ostrowski, Paulina Wienchol, Kamil Lamkowski, Jakub Kaminski, Mateusz Doledutko, Radoslaw Rosiek
Article
Thermodynamics
Yong Cheng, Fukai Song, Lei Fu, Saishuai Dai, Zhiming Yuan, Atilla Incecik
Summary: This paper investigates the accessibility of wave energy absorption by a dual-pontoon floating breakwater integrated with hybrid-type wave energy converters (WECs) and proposes a hydraulic-pneumatic complementary energy extraction method. The performance of the system is validated through experiments and comparative analysis.
Article
Thermodynamics
Jing Gao, Chao Wang, Zhanwu Wang, Jin Lin, Runkai Zhang, Xin Wu, Guangyin Xu, Zhenfeng Wang
Summary: This study aims to establish a new integrated method for biomass cogeneration project site selection, with a focus on the application of the model in Henan Province. By integrating Geographic Information System and Multiple Criterion Decision Making methods, the study conducts site selection in two stages, providing a theoretical reference for the construction of biomass cogeneration projects.
Article
Thermodynamics
Mert Temiz, Ibrahim Dincer
Summary: The current study presents a hybrid small modular nuclear reactor and solar-based system for sustainable communities, integrating floating and bifacial photovoltaic arrays with a small modular reactor. The system efficiently generates power, hydrogen, ammonia, freshwater, and heat for residential, agricultural, and aquaculture facilities. Thermodynamic analysis shows high energy and exergy efficiencies, as well as large-scale ammonia production meeting the needs of metropolitan areas. The hybridization of nuclear and solar technologies offers advantages of reliability, environmental friendliness, and cost efficiency compared to renewable-alone and fossil-based systems.
Editorial Material
Thermodynamics
Wojciech Stanek, Wojciech Adamczyk
Article
Thermodynamics
Desheng Xu, Yanfeng Li, Tianmei Du, Hua Zhong, Youbo Huang, Lei Li, Xiangling Duanmu
Summary: This study investigates the optimization of hybrid mechanical-natural ventilation for smoke control in complex metro stations. The results show that atrium fires are more significantly impacted by outdoor temperature variations compared to concourse/platform fires. The gathered high-temperature smoke inside the atrium can reach up to 900 K under a 5 MW train fire energy release. The findings provide crucial engineering insights into integrating weather data and adaptable ventilation protocols for smoke prevention/mitigation.
Article
Thermodynamics
Da Guo, Heping Xie, Mingzhong Gao, Jianan Li, Zhiqiang He, Ling Chen, Cong Li, Le Zhao, Dingming Wang, Yiwei Zhang, Xin Fang, Guikang Liu, Zhongya Zhou, Lin Dai
Summary: This study proposes a new in-situ pressure-preserved coring tool and elaborates its pressure-preserving mechanism. The experimental and field test results demonstrate that this tool has a high pressure-preservation capability and can maintain a stable pressure in deep wells. This study provides a theoretical framework and design standards for the development of similar technologies.
Article
Thermodynamics
Aolin Lai, Qunwei Wang
Summary: This study assesses the impact of China's de-capacity policy on renewable energy development efficiency (REDE) using the Global-MSBM model and the difference-in-differences method. The findings indicate that the policy significantly enhances REDE, promoting technological advancements and marketization. Moreover, regions with stricter environmental regulations experience a higher impact.
Article
Thermodynamics
Mostafa Ghasemi, Hegazy Rezk
Summary: This study utilizes fuzzy modeling and optimization to enhance the performance of microbial fuel cells (MFCs). By simulating and analyzing experimental data sets, the ideal parameter values for increasing power density, COD elimination, and coulombic efficiency were determined. The results demonstrate that the fuzzy model and optimization methods can significantly improve the performance of MFCs.
Article
Thermodynamics
Zhang Ruan, Lianzhong Huang, Kai Wang, Ranqi Ma, Zhongyi Wang, Rui Zhang, Haoyang Zhao, Cong Wang
Summary: This paper proposes a grey box model for fuel consumption prediction of wing-diesel hybrid vessels based on feature construction. By using both parallel and series grey box modeling methods and six machine learning algorithms, twelve combinations of prediction models are established. A feature construction method based on the aerodynamic performance of the wing and the energy relationship of the hybrid system is introduced. The best combination is obtained by considering the root mean square error, and it shows improved accuracy compared to the white box model. The proposed grey box model can accurately predict the daily fuel consumption of wing-diesel hybrid vessels, contributing to operational optimization and the greenization and decarbonization of the shipping industry.
Article
Thermodynamics
Huayi Chang, Nico Heerink, Junbiao Zhang, Ke He
Summary: This study examines the interaction between off-farm employment decisions between couples and household clean energy consumption in rural China, and finds that two-paycheck households are more likely to consume clean energy. The off-farm employment of women is a key factor driving household clean energy consumption to a higher level, with wage-employed wives having a stronger influence on these decisions than self-employed ones.
Article
Thermodynamics
Hanguan Wen, Xiufeng Liu, Ming Yang, Bo Lei, Xu Cheng, Zhe Chen
Summary: Demand-side management is crucial to smart energy systems. This paper proposes a data-driven approach to understand the relationship between energy consumption patterns and household characteristics for better DSM services. The proposed method uses a clustering algorithm to generate optimal customer groups for DSM and a deep learning model for training. The model can predict the possibility of DSM membership for a given household. The results demonstrate the usefulness of weekly energy consumption data and household socio-demographic information for distinguishing consumer groups and the potential for targeted DSM strategies.
Article
Thermodynamics
Xinglan Hou, Xiuping Zhong, Shuaishuai Nie, Yafei Wang, Guigang Tu, Yingrui Ma, Kunyan Liu, Chen Chen
Summary: This study explores the feasibility of utilizing a multi-level horizontal branch well heat recovery system in the Qiabuqia geothermal field. The research systematically investigates the effects of various engineering parameters on production temperature, establishes mathematical models to describe their relationships, and evaluates the economic viability of the system. The findings demonstrate the significant economic feasibility of the multi-level branch well system.
Article
Thermodynamics
Longxin Zhang, Songtao Wang, Site Hu
Summary: This investigation reveals the influence of tip leakage flow on the modern transonic rotor and finds that the increase of tip clearance size leads to a decline in rotor performance. However, an optimal tip clearance size can extend the rotor's stall margin.
Article
Thermodynamics
Kristian Gjoka, Behzad Rismanchi, Robert H. Crawford
Summary: This paper proposes a framework for assessing the performance of 5GDHC systems and demonstrates it through a case study in a university campus in Melbourne, Australia. The results show that 5GDHC systems are a cost-effective and environmentally viable solution in mild climates, and their successful implementation in Australia can create new market opportunities and potential adoption in other countries with similar climatic conditions.
Article
Thermodynamics
Jianwei Li, Guotai Wang, Panpan Yang, Yongshuang Wen, Leian Zhang, Rujun Song, Chengwei Hou
Summary: This study proposes an orientation-adaptive electromagnetic energy harvester by introducing a rotatable bluff body, which allows for self-regulation to cater for changing wind flow direction. Experimental results show that the output power of the energy harvester can be greatly enhanced with increased rotatory inertia of the rotating bluff body, providing a promising solution for harnessing wind-induced vibration energy.
