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Design, simulation and performance analysis of photovoltaic solar water pumping system

Energy Harvesting and Systems 2023年第2期10卷 287-299页

作者： Maka, Ali O. M. Mehmood, Mubbashar Chaudhary, Tariq Nawaz The Libyan Centre for Research and Development of Saharian Communities Murzuq Libya Institute of Mechanical Process and Energy Engineering School of Engineering and Physical Sciences Heriot-Watt University EdinburghEH14 4AS United Kingdom Department of Mechanical Engineering University of Engineering & Technology Lahore Pakistan RCET Gujranwala Gujranwala Pakistan

The solar photovoltaic system is one of the technologies which is used to pump water in rural, isolated and desert areas where electric connection to the main grid is a problem. The study area is selected because of its higher natural resources of solar radiation over the year. Thus, that encourages us to adopt this study in order to understand the effects of various operating parameters on performance behaviour, which leads to enhancing the system design. This paper aims to assess the solar water pump system's design and estimated performance in real environmental conditions. The PVsyst has been used to design and simulate a system which allows us to analyse the operating behaviour of a photovoltaic solar water pumping system. The solar PV pumping system design is considered;the photovoltaic module has characteristics and the pumping system characteristics. The photovoltaic array losses due to temperature were estimated about -14.3% and the soiling losses represented approximately -5%. The results showed that performance losses were significant variance in the months of the summer season from May to July. Therefore, their implication on the water flow rates significantly decreases throughout the months of the summer season from May to July, respectively. & amp;copy;2022 Walter de Gruyter GmbH, Berlin/Boston. © 2023 Walter de Gruyter GmbH. All rights reserved.

关键词： Solar power generation

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Detection of onset of agglomeration in a bubbling fluidized bed biomass combustor using reactive Eulerian computational fluid dynamics

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Particuology 2024年第7期90卷 504-515页

作者： Abdullah Tasleem Atta Ullah Fei Li Qun Yi William Nimmo Syed Sheraz Daood Department of Chemical Engineering Pakistan Institute of Engineering and Applied Sciences(PIEAS)Lehtrar RoadP.O.Nilore45650IslamabadPakistan Institute of Process Engineering Chinese Academy of SciencesBeijing100190China School of Chemical Engineering and Pharmacy Wuhan Institute of TechnologyWuhan430205China Energy Engineering Group Energy 2050Department of Mechanical EngineeringUniversity of SheffieldSheffieldS37RDUnited Kingdom Institute of Energy and Environmental Engineering Faculty of ElectricalEnergy&Environmental EngineeringUniversity of the PunjabQuaid-e-Azam CampusLahorePakistan Energy Engineering Research and Development Centre Faculty of ElectricalEnergy&Environmental EngineeringUniversity of the PunjabQuaid-e-Azam CampusLahorePakistan

The choice of a type of combustion technology to be used for heat or power generation depends on economic,technical,operational and fuel availability *** benefits associated with the evolving market driven by the fluidised bed combustion(FBC)technology cannot be overlooked especially when gauged at 65 GWth of worldwide installed capacity alongside added benefits of handling fuel variation,low pollutant emissions and high combustion *** or biomass waste will continue to have a vital role to play in the future FBC technology-based power *** often contains high levels of inorganic species that can form sticky agglomerates posing a significant risk to boiler operation resulting in unscheduled *** added complexity of the behaviour of the fuel and bed material mix highlights the requirement for simulation models to identify agglomeration to help improve the overall performance and reliability of FBC *** resolve this problem,this research devised a simulation strategy for the detection of agglomeration using the Eulerian–Eulerian *** developed modelling strategy is validated with the experimental data available in literature for two-dimensional simplified geometry of a pilot-scale fluidised bed *** model results were found promising and robust to predict bed defluidisation times and other parameters consistent with the experimental data.

关键词： Fluidized bed combustion Eulerian Models Biomass Agglomeration Defluidisation

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Non-invasive estimation of the powder size distribution from a single speckle image

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Light(Science & Applications) 2024年第10期13卷 2221-2230页

作者： Qihang Zhang Ajinkya Pandit Zhiguang Liu Zhen Guo Shashank Muddu Yi Wei Deborah Pereg Neda Nazemifard Charles Papageorgiou Yihui Yang Wenlong Tang Richard D.Braatz Allan S.Myerson George Barbastathis Department of Electrical Engineering and Computer Science Massachusetts Institute of TechnologyCambridgeMA 02139USA Singapore-MIT Alliance for Research and Technology(SMART)Centre Singapore 117543Singapore Department of Chemical Engineering Massachusetts Institute of TechnologyCambridgeMA 02139USA Department of Mechanical Engineering Massachusetts Institute of TechnologyCambridgeMA 02139USA Process Chemistry Development Takeda Pharmaceuticals International Co40 Landsdowne StCambridgeMA 02139USA ShinrAI Center for AI/ML Data Sciences InstitutesTakeda Pharmaceuticals International Co650 E Kendall StCambridgeMA 02142USA Present address:Department of Precision Instruments Tsinghua UniversityBeijing 100084China

Non-invasive characterization of powders may take one of two approaches:imaging and counting individual particles;or relying on scattered light to estimate the particle size distribution(PSD)of the *** former approach runs into practical difficulties,as the system must conform to the working distance and other restrictions of the imaging *** latter approach requires an inverse map from the speckle autocorrelation to the particle *** principle relies on the pupil function determining the basic sidelobe shape,whereas the particle size spread modulates the sidelobe *** recently showed that it is feasible to invert the speckle autocorrelation and obtain the PSD using a neural network,trained efficiently through a physics-informed semi-generative *** this work,we eliminate one of the most time-consuming steps of our previous method by engineering the pupil *** judiciously blocking portions of the pupil,we sacrifice some photons but in return we achieve much enhanced sidelobes and,hence,higher sensitivity to the change of the size *** result is a 60×reduction in total acquisition and processing time,or 0.25 seconds per frame in our *** real-time operation in our system is not only more appealing toward rapid industrial adoption,it also paves the way for quantitative characterization of complex spatial or temporal dynamics in drying,blending,and other chemical and pharmaceutical manufacturing processes.

关键词： speckle size distribution

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Standalone polymer ‘litmus-paper’-like sensor for specific hydrogen detection: Integrating naked-eye and fluorescence techniques

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International Journal of Hydrogen Energy 2025年 137卷 397-405页

作者： Luzzatto, Yonatan Alatawna, Amr Sror, Gal Mendelson, Orit Pevzner, Svetlana Regev, Oren Department of Chemical Engineering Ben-Gurion University of the Negev Beer-Sheva8410500 Israel Department of Chemical Engineering and Blechner Center for Industrial Catalysis and Process Development Ben-Gurion University of the Negev Beer-Sheva8410500 Israel Department of Chemistry Nuclear Research Centre-Negev Beer-Sheva84190 Israel Ilse Katz Institute for Nanoscale Science and Technology Ben-Gurion University of the Negev Beer-Sheva8410500 Israel

Hydrogen is a promising renewable fuel with broad applications, but its flammability and tendency to leak through metals create safety challenges, necessitating reliable, standalone, and affordable sensing systems. Current hydrogen sensors are often costly, suffer from cross-sensitivity to gases, and are typically not standalone. Our sensing approach is based on the hydrogenation of the fluorophore 1,4-bisphenylethnylbenzene (PEB). This approach encompasses two levels of visual sensing: rapid detection via surface color change and quantitative "litmus paper"-like analysis and cross-section observation, which provides a hydrogen exposure history and other parameters such as hydrogen partial pressure and exposure time. The sensor detection limit is 1 mbar ( © 2025 Hydrogen Energy Publications LLC

关键词： Hydrogenolysis

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On the use of Physics in Machine Learning for Manufacturing process Inspection 6

On the use of Physics in Machine Learning for Manufacturing ...

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Optical Methods for Inspection, Characterization, and Imaging of Biomaterials VI 2023

作者： Barbastathis, George Zhang, Qihang Pandit, Ajinkya Tang, Wenlong Papageorgiou, Charles Braatz, Richard D. Myerson, Allan S. Tan, Bingyao Schmetterer, Leopold Department of Mechanical Engineering Denmark Department of Chemical Engineering Massachusetts Institute of Technology United States Singapore-MIT Alliance for Research & Technology Centre Massachusetts Institute of Technology United States Data Sciences Institute United States Process Chemistry Development Takeda Pharmaceuticals International Company United States School of Chemistry Chemical Engineering and Biotechnology Nanyang Technological University Singapore

ISBN: (数字)9781510664548

ISBN: (纸本)9781510664531

We discuss the use of machine learning in computational imaging for manufacturing process inspection and control. In a recent article1 we described a physics-enhanced auto-correlation based estimator (Peace) for quantitative speckle. We derived an explicit forward relationship between the particle size distribution (PSD) and the speckle autocorrelation for particle sizes significantly larger than the wavelength (×100 „ ×1,000). We subsequently trained a machine learning kernel to invert the autocorrelation and obtain the PSD, using the explicit forward model to reduce the number of experimentally acquired examples. In this talk, we present an expanded discussion of Peace and its properties, including spatial and temporal sampling and accuracy, and more general applications. © 2023 SPIE. All rights reserved.

关键词： Autocorrelation

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Synergistic sodium alginate- and biochar-immobilized cells for enhancing fermentative hydrogen production from food waste

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Environmental Science and Pollution research 2024年第56期31卷 64524-64533页

作者： Ngamnurak, Phonsini Plangklang, Pensri Pomdaeng, Prakaidao Ko, Ting-Wu Reungsang, Alissara Chu, Chen-Yeon Graduate School Khon Kaen University Khon Kaen40002 Thailand Department of Biology Technology Faculty of Technology Khon Kaen University Khon Kaen40002 Thailand Research Group for Development of Microbial Hydrogen Production Process From Biomass Khon Kaen University Khon Kaen40002 Thailand Institute of Green Products Feng Chia University Taichung Taiwan Ph.D. Program of Mechanical and Aeronautical Engineering Feng Chia University Taichung Taiwan Master’s Program of Green Energy Science and Technology Feng Chia University Taichung Taiwan Academy of Science Royal Society of Thailand Bangkok10300 Thailand

An immobilized hydrogen-producing consortium investigated biohydrogen production from food waste using a combination of sodium alginate and cassava rhizome biochar. We investigated the effect of varying the biochar concentration from 0 to 3% and the size of immobilized cells from 1 to 7 mm. Immobilized cells were prepared using 50% (v/v) enriched hydrogen-producing consortium, 2% (w/v) sodium alginate, and 0 to 3% (w/v) cassava rhizome biochar. The optimal conditions for achieving the highest hydrogen production in the batch fermentation reactor were identified as a biochar concentration of 2% (w/v) and an immobilized cell size of 2 mm. The highest hydrogen yield, maximum hydrogen production rate, and lag time recorded were 0.69 mmol H2/g-COD, 0.02 mmol H2/g-COD.h, and 41.51 h, respectively. This research highlights the potential of cassava biochar technology for efficient biohydrogen production from food waste, contributing to renewable energy generation and sustainable waste management. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Anaerobic digestion

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Advancements in prokaryotic systematics and the role of Bergey's International Society for microbial Systematics in addressing challenges in the meta-data era

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National Science Review 2024年第7期11卷 292-304页

作者： Jian-Yu Jiao Rashidin Abdugheni Dao-Feng Zhang Iftikhar Ahmed Mukhtiar Ali Maria Chuvochina Svetlana N.Dedysh Xiuzhu Dong Markus G?ker Brian P.Hedlund Philip Hugenholtz Kamlesh Jangid Shuang-Jiang Liu Edward R.B.Moore Manik Prabhu Narsing Rao Aharon Oren Ramon Rossello-Mora Bhagwan Narayan Rekadwad Nimaichand Salam Wensheng Shu Iain C.Sutcliffe Wee Fei Aaron Teo Martha E.Trujillo Stephanus N.Venter William B.Whitman Guoping Zhao Wen-Jun Li State Key Laboratory of Biocontrol Guangdong Provincial Key Laboratory of Plant Resources and Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) School of Life Sciences Sun Yat-Sen University State Key Laboratory of Desert and Oasis Ecology Key Laboratory of Ecological Safety and Sustainable Development in Arid LandsXinjiang Institute of Ecology and Geography Chinese Academy of Sciences Jiangsu Province Engineering Research Center for Marine Bio-resources Sustainable Utilization&College of Oceanography Hohai University National Culture Collection of Pakistan(NCCP) Land Resources Research Institute(LRRI) National Agricultural Research Centre(NARC) The University of Queensland School of Chemistry and Molecular Biosciences Australian Centre for Ecogenomics Winogradsky Institute of Microbiology Research Center of BiotechnologyRussian Academy of Sciences State Key Laboratory of Microbial Resources Institute of Microbiology Chinese Academy of Sciences Leibniz Institute DSMZ–German Collection of Microorganisms and Cell Cultures School of Life Sciences University of Nevada Nevada Institute of Personalized Medicine University of Nevada Bioenergy Group MACS Collection of Microorganisms Agharkar Research Institute State Key Laboratory of Microbial Technology Shandong University Department of Infectious Disease Institute for Biomedicine and Culture Collection University of Gothenburg(CCUG) Institute for BiomedicineSahlgrenska AcademyUniversity of Gothenburg Instituto de Ciencias Aplicadas Facultad de Ingeniería Universidad Autónoma de Chile The Alexander Silberman Institute of Life Sciences The Edmond J.Safra Campus The Hebrew University of Jerusalem Marine Microbiology Group Department of Animal and Microbial Biodiversity Mediterranean Institute for Advanced Studies(IMEDEA CSIC-UIB) MicrobeAI Lab Division of Microbiology and Biotechnology Yenepoya Research Centre Yenepoya(Deemed to be University) National Agri-Food Biotechnology Institute Institute of Ecological Science Sch

Prokaryotes are ubiquitous in the biosphere, important for human health and drive diverse biological and environmental processes. Systematics of prokaryotes, whose origins can be traced to the discovery of microorganisms in the 17th century, has transitioned from a phenotype-based classification to a more comprehensive polyphasic taxonomy and eventually to the current genome-based taxonomic *** transition aligns with a foundational shift from studies focused on phenotypic traits that have limited comparative value to those using genome sequences. In this context, Bergey's Manual of Systematics of Archaea and Bacteria(BMSAB) and Bergey's International Society for microbial Systematics(BISMiS) play a pivotal role in guiding prokaryotic systematics. This review focuses on the historical development of prokaryotic systematics with a focus on the roles of BMSAB and BISMiS. We also explore significant contributions and achievements by microbiologists, highlight the latest progress in the field and anticipate challenges and opportunities within prokaryotic systematics. Additionally, we outline five focal points of BISMiS that are aimed at addressing these challenges. In conclusion, our collaborative effort seeks to enhance ongoing advancements in prokaryotic systematics, ensuring its continued relevance and innovative characters in the contemporary landscape of genomics and bioinformatics.

关键词： prokaryotic systematics Bergey's Manual of Systematics of Archaea and Bacteria (BMSAB) Bergey's International Society for microbial Systematics (BISMiS) meta-data era

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Anthropogenic land use substantially increases riverine CO_(2) emissions

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Journal of Environmental Sciences 2022年第8期34卷 158-170页

作者： Shijie Gu Siyue Li Isaac R.Santos School of River and Ocean Engineering Chongqing Jiaotong UniversityChongqing 400074China Key Laboratory of Reservoir Aquatic Environment Chongqing Institute of Green and Intelligent TechnologyChinese Academy of SciencesChongqing 400714China Chongqing School University of Chinese Academy of SciencesChongqing 400714China Research Center for Environmental Ecology and Engineering Institute of Changjiang Water Environment and Ecological SecuritySchool of Environmental Ecology and Biological EngineeringKey Laboratory for Green Chemical Process of Ministry of EducationKey Laboratory of Novel Reactor and Green Chemical Technology of Hubei ProvinceEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationWuhan Institute of TechnologyWuhan 430205China Department of Marine Sciences University of GothenburgGothenburg 41296Sweden National Marine Science Centre Southern Cross UniversityCoffs HarbourNSW 2450Australia

Carbon dioxide(CO_(2)) emissions from inland waters to the atmosphere are a pivotal component of the global carbon budget. Anthropogenic land use can influence riverine CO_(2) emissions, but empirical data exploring cause-effect relationships remain limited. Here, we investigated CO_(2) partial pressures(pCO_(2)) and degassing in a monsoonal river(Yue River)within the Han River draining to the Yangtze in China. Almost 90% of river samples were supersaturated in CO_(2) with a mean ± standard deviation of 1474 ± 1614 μatm, leading to emissions of 557-971 mmol/m^(2)/day from river water to the atmosphere. Annual CO_(2) emissions were 1.6-2.8 times greater than the longitudinal exports of riverine dissolved inorganic and organic carbon. pCO_(2) was positively correlated to anthropogenic land use(urban and farmland), and negatively correlated to forest cover. p CO_(2) also had significant and positive relationships with total dissolved nitrogen and total dissolved phosphorus. Stepwise multiple regression models were developed to predict p CO_(2) . Farmland and urban land released nutrients and organic matter to the river system, driving riverine p CO_(2) enrichment due to enhanced respiration in these heterotrophic rivers. Overall, we show the crucial role of land use driving riverine pCO_(2) , which should be considered in future large-scale estimates of CO_(2) emissions from streams. Land use change can thus modify the carbon balance of urban-river systems by enhancing river emissions, and reforestation helps carbon neutral in rivers.

关键词： River carbon Inland waters Greenhouse gases Climate change Water quality Headwater streams

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Analytic hierarchy process method for rural domestic sewage treatment processes − a case study of Baiyangdian in China

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Separation and Purification technology 2025年 371卷

作者： Wang, Yuting Cui, Han Liu, Xiaoyang Sun, Li Sun, Zhi Lv, Longyi Zhang, Guangming Gao, Wenfang Tianjin Key Laboratory of Clean Energy and Pollutant Control School of Energy and Environmental Engineering Hebei University of Technology Tianjin300401 China State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing100085 China University of Chinese Academy of Sciences Beijing100049 China National Key Laboratory of Biochemical Engineering Beijing Engineering Research Centre of Process Pollution Control Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China

Comprehensive evaluation of rural sewage treatment technologies is crucial for optimizing resource utilization, mitigating environmental impacts, and guiding sustainable development strategies in the context of rural infrastructure challenges. However, the comprehensive evaluation of rural domestic sewage faces several challenges (e.g., lacking of cost-benefit analysis, limited public participation, and insufficient assessment of social impacts). In this research, an analytic hierarchy process integrated with life cycle assessment (LCA) is proposed to comprehensively evaluate the environmental, economic, technological, and societal impaction of typical rural domestic sewage treatment technologies. Anaerobic-anoxic–oxic + membrane bio-reactor (A2O-MBR, M1), modified A2O-MBR (M2), pre-denitrification-anaerobic-anoxic–oxic + moving bed biofilm reactor (A3O-MBBR, M3) and modified A3O-MBBR (M4) are selected as typical treatment technologies. Under LCA, M4 shows the smallest environmental impact (1.73E-10), indicating that increasing the sludge reflux rate and the nitrification reflux ratio can effectively mitigate environmental harm, minimize impact, save energy and reduce consumption. Taking all factors into consideration, the indicators (i.e., global warming potential (1.35 %), total cost of sewage treatment (3.19 %), nitrogen removal efficiency (2.09 %), and localized infrastructure (1.56 %)) significantly influence the comprehensive evaluation. The multi-objective comprehensive assessment demonstrated that M4 (6.88) is the optimal process, followed by M1 (3.73), M3 (5.74) and M2 (5.95). This research provides a reference for the government and enterprises to reform the rural domestic sewage treatment technology from a multi-objective perspective. © 2025 Elsevier B.V.

关键词： Sustainable development

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development and Characterization of Aluminium-Based Metal Matrix Composites

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Materials Sciences and Applications 2023年第1期14卷 1-19页

作者： M. A. Gafur Al Fahad Ahmed Raisul Abrar Surya Sabrin Soshi Pilot Plant & Process Development Centre Bangladesh Council of Scientific & Industrial Research (BCSIR) Dhaka Bangladesh Department of Naval Architecture and Marine Engineering Military Institute of Science and Technology Dhaka Bangladesh Department of MPE AUST Dhaka Bangladesh

Aluminum based metal matrix composites were fabricated using stir casting where silicon carbide and alumina were the reinforcements. Different types of properties (physical-density, mechanical-tensile, hardness, chemical-corrosion etc.) were measured and compared with base metals/alloys. The properties were significantly varied. The highest density was obtained for pure aluminium with 5% Al₂O₃ whereas the lowest was obtained for AA-4032 alloy. The highest hardness was obtained for AA-4032 with 5% Al₂O₃ whereas the lowest was obtained for pure Al with 5% Al₂O₃. The highest strength was obtained for AA-6061 with 5% coarse SiC whereas the lowest was obtained for pure Al. The highest impact strength was obtained for AA-4032 with 5% Al₂O₃ whereas the lowest was obtained for AA-6061. The corrosion resistance of all composites was lower than that of the base materials.

关键词： Al AA-6061 AA-4032 SiC Al2O3 Stir-Casting Metal Matrix Composite MMC Nanocomposites

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