Article
Chemistry, Analytical
Sirui Tong, Shuping Zhang, Haoxin Yin, Jiaxing Wang, Minzi Chen
Summary: This study evaluated the co-hydrothermal treatment combined with pyrolysis of rice straw and sewage sludge to produce biochar, aiming to reasonably dispose of sewage sludge as a resource and avoid secondary pollution. Results showed a synergy between rice straw and sewage sludge during the co-HTP process, leading to slightly higher biochar yield than predicted values. The co-HTP process also promoted the increase of aromaticity and stability of biochar, with a significant increase in specific surface area. Additionally, the process decreased the total concentrations of heavy metals in biochar and helped immobilize heavy metals to reduce environmental risks.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Energy & Fuels
Chaoqian Wang, Xinyan Zhang, Wenlong Wang, Jing Sun, Yanpeng Mao, Xiqiang Zhao, Zhanlong Song
Summary: This study proposed a stepwise microwave synergistic pyrolysis (SMSP) approach to produce sludge-based biochar with immobilized heavy metals. The results showed that higher pre-pyrolysis temperature and longer time were more suitable for heavy metal immobilization through vitrification. The optimal sludge-based biochar had higher residual ratio, lower leaching ratio, and lower ecotoxicity risk compared to conventional sludge-based biochar.
Article
Biotechnology & Applied Microbiology
Xin Zhang, Baowei Zhao, Hui Liu, Yue Zhao, Liujun Li
Summary: The pyrolysis of sewage sludge into biochar is an effective way to achieve the harmless and resourceful utilization of sludge. This study investigated the relationship between pyrolysis temperatures and biochar properties, as well as the environmental risks associated with heavy metals. The findings provide insights into sludge management and the safe use of biochar in soil.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Chemistry, Analytical
Ibrahim Gbolahan Hakeem, Pobitra Halder, Savankumar Patel, Abhishek Sharma, Rajender Gupta, Aravind Surapaneni, Jorge Paz-Ferreiro, Kalpit Shah
Summary: Pre-treatment of biosolids can reduce the negative impact of inorganic matter during pyrolysis, leading to higher yield and quality of pyrolysis products. The removal of ash-forming elements improves organic matter devolatilization, resulting in higher bio-oil and lower biochar production. Pre-treatment also enhances biochar properties, increasing fixed carbon content, calorific value, fuel ratio, specific surface area, and porous structure formation.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Chemistry, Analytical
Jisong Bai, Quanwei Lv, Xin Fu, Jingyou Chen, Hong Wang, Shunhong Lin, Xiong Zhou
Summary: The catalytic pyrolysis of sewage sludge with self-derived char was investigated in this study. The results showed that char reforming improved the quality of bio-oil by increasing the aliphatic content and reducing the organic nitrogen species content. The temperature of reforming had an impact on the yields of bio-oil and gas, with the highest aliphatic content and lowest organic nitrogen species content obtained at 500 degrees C.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Chemistry, Analytical
Jaroslav Mosko, Michael Pohorely, Siarhei Skoblia, Radek Fajgar, Pavel Straka, Karel Soukup, Zdenek Beno, Josef Fartak, Olga Bicakova, Michal Jeremias, Michal Syc, Erik Meers
Summary: Pyrolysis of sewage sludge at 400-800 degrees C showed that increasing temperature led to higher phosphate and metaphosphate content, and lower reduced P species content; higher temperature also increased sulfide content and decreased sulfate and sulfite content; the effect on nitrogen species was minimal. Raman spectroscopy and NMR revealed significant contribution of graphite and (poly) aromatic hydrocarbons to the organic structure of sludge-chars.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Chemistry, Analytical
Jaroslav Mosko, Michal Jeremias, Siarhei Skoblia, Zdenek Beno, Vineet Singh Sikarwar, Matej Husek, Hailong Wang, Michael Pohorely
Summary: Residual moisture in pyrolyzed fuel affects the distribution and properties of pyrolysis products due to the concentration of steam in the primary pyrolysis gas. Using steam as a carrier gas results in significantly different product distribution and properties, especially at high temperatures. This approach offers a simplified way to predict and optimize pyrolysis products in large-scale units.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Environmental Sciences
Weihua Gu, Jiangshan Guo, Jianfeng Bai, Bin Dong, Jun Hu, Xuning Zhuang, Chenglong Zhang, Kaimin Shih
Summary: In this study, co-pyrolysis of sewage sludge (SS) and Ca (H2PO4)(2) was conducted to produce biochar with stable heavy metals. Optimal co-pyrolysis conditions were determined as a blended ratio of 15% Ca(H2PO4)(2), a final temperature of 650 degrees C, a heating rate of 15 degrees C min(-1), and a retention time of 60 min. The potential stabilization mechanisms of heavy metals included increased biochar surface porosity, formation of metal phosphates, and reactions among inorganic substances, pyrolysis products, and heavy metals. The environmental risks posed by heavy metals were significantly reduced from 65.73 in SS to 4.39 in the biochar derived from co-pyrolysis with Ca(H2PO4)(2).
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Chemistry, Multidisciplinary
Marius Gheorghe Miricioiu, Anca Zaharioiu, Simona Oancea, Felicia Bucura, Maria Simona Raboaca, Constantin Filote, Roxana Elena Ionete, Violeta Carolina Niculescu, Marius Constantinescu
Summary: The study investigated the use of sewage-sludge-derived materials for CO2 adsorption, with promising results in terms of adsorption capacity. The materials were structurally and texturally characterized, and the efficiency of CO2 adsorption was evaluated using a homemade system coupled with a gas chromatograph. The study concluded that the sewage sludge derived material could be a promising solution for CO2 reduction and waste disposal.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Environmental
Rixiang Huang, Yuanzhi Tang, Lei Luo
Summary: This study compared the transformations of sulfur and several related metals during pyrolysis and hydrothermal carbonization treatments of sewage sludge, finding the formation of metal sulfides and thiophenes in both processes, with different sulfur species playing a critical role in regulating metal speciation.
Article
Engineering, Environmental
Xingdong Wang, Victor Wei-Chung Chang, Zhiwei Li, Yang Song, Chunxing Li, Yin Wang
Summary: The study revealed that food waste digestate (FWD) as an additive can significantly reduce the heavy metal content in blended biochar, thereby improving its ecological risk index and phytotoxicity index.
Article
Environmental Sciences
Hui Chen, Wei Wu, Dezhen Chen, Yuheng Feng
Summary: Sewage sludge char (SC) has potential as a reducing agent in flue gas cleaning systems by reducing NO to N2 at high temperatures. However, modifications are needed to enhance its carbon-deNOx performance. This study compared the carbon-deNOx performance of coal char (CC) and different types of SCs, including original (SC-R), pyrolytic volatiles activated (SC-V), and KOH activated (SC-K), in terms of NO removal rate and secondary pollution discharged.
Article
Chemistry, Applied
Lin Li, Shuai Tong, Lunbo Duan, Changsui Zhao, Zhipeng Shi
Summary: By comparing chars produced under different atmospheres, it was found that the pore structure and specific surface area of chars are significantly affected by the gasification environment, while the presence of chemical groups has a minor impact on the chars. The best gasification reactivities were obtained on the chars produced under 50%CO2/50%N2 and 50%H2O/50%N2 atmospheres, largely influenced by the porosity of the chars.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Thermodynamics
Li Yaode, Yang Dong, Zhou Xihong, Dong Le, Suo Lihui, Sun Wenbo
Summary: The migration characteristics and volatility of heavy metals are influenced by temperature during the co-combustion process. The presence and proportion of different heavy metals in the gas phase and solid phase vary at different temperatures. Higher temperatures lead to higher volatility of heavy metals, with shorter time to reach maximum volatility.
JOURNAL OF THERMAL SCIENCE
(2022)
Article
Green & Sustainable Science & Technology
Inesa Kniuipyte, Marius Praspaliauskas, Jone Vencloviene, Jurate Zaltauskaite
Summary: Sewage sludge reuse in agriculture is encouraged but also poses environmental risk. This study examined the potential of industrial hemp to remediate sewage sludge and improve soil quality. The results showed that hemp cultivation significantly reduced heavy metal concentrations in the soil and enriched certain nutrients. The optimal fertilization with sewage sludge or sewage sludge char was found to be 25 Mg ha(-1) for maximum contaminant removal and plant biomass and bioenergy production.
Article
Chemistry, Multidisciplinary
Yishen Liu, Meijia Gu, Qihang Ding, Zhiyun Zhang, Wanxia Gong, Yuncong Yuan, Xiaofei Miao, Huili Ma, Xuechuan Hong, Wenbo Hu, Yuling Xiao
Summary: We developed efficient heavy-atom-free photosensitizers in the near-infrared (NIR) range using a facile approach. By modifying the thiopyrylium-based NIR-II dyads, our study showed that a sterically bulky and electron-rich moiety enhanced the intersystem crossing and electron excitation characteristics, resulting in significantly elevated reactive oxygen species (ROS) quantum yield. Our optimized lung-targeting nanoparticles enabled real-time NIR-II lung imaging and guided effective pulmonary coronavirus inactivation.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Agricultural Engineering
Bang Yao, Qinhao Kang, Jie Fu, Yang Liu, Wenya Ao, Long Wang, Zhihui Jiang, Tianhao Zhang, Yongmeng Song, Zeyu Deng, Asif Ali Siyal, Jianjun Dai
Summary: Experiments were conducted to investigate cellulose and furfural obtained from catalytic hydrolysis of corncob. This process enhanced the comprehensive utilization of hemicellulose and cellulose in biomass resources. The influence of factors such as temperature, reaction time, catalyst concentration, and liquid to solid ratio were studied on hydrothermal characteristics, furfural yield, cellulose properties, and retention through orthogonal and parameter tests. The optimal conditions were found to be 180 degrees C, 45 min, and 3 mL/g of LSR, leading to the highest furfural yield (47.60%) and cellulose retention ratio (71.84%) using acetic acid (6 wt%) and FeCl3 (40 mM). AlCl3 and citric acid resulted in low furfural yield and the lowest cellulose retention ratio (8.38%). Furfural, 5-hydroxymethyfurfural, and vanillin were the main organics in residual liquors while furfural dominated distillated organics (GC-MS areas >= 97.9%). The peak of furfural yield shifted to shorter reaction time with increasing temperature. Combination of AlCl3 with acetic acid and citric acid accelerated cellulose degradation. NaCl inhibited furfural yield and promoted lignin decomposition. Higher temperature and concentration of FeCl3 contributed to reduced crystallinity of cellulose during hydrothermal treatment.
BIOMASS & BIOENERGY
(2023)
Article
Chemistry, Multidisciplinary
Zhipeng Li, Xuezhi Ma, Fengxia Wei, Dapeng Wang, Zeyu Deng, Mengting Jiang, Arif Siddiquee, Kun Qi, Di Zhu, Meng Zhao, Mengzhe Shen, Pieremanuele Canepa, Shanshan Kou, Jiao Lin, Qian Wang
Summary: In this study, a bottom-up method is used to grow ferrocene crystals to demonstrate self-assembled ultrathin true zero-order waveplates without additional machining processing, which is particularly suited for nanophotonic integration. The grown waveplate has high birefringence, low dichroism, and a potentially broad operating range. The as-grown waveplate allows the development of further miniaturized systems via tandem integration.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Congcong Chen, Xin Zhao, Yaping Gong, Yang Liu, Zhongwei Chen, Luming Zhang, Jian Chen, Zeyu Deng, Haipeng Lu, Min Luo, Pieremanuele Canepa, Lingling Mao
Summary: This study reports a new family of hybrid 2D Ge-based perovskites with excellent optical properties and structural diversity. The Ge-based iodide perovskites exhibit good second-harmonic generation (SHG) responses, providing new strategies for the design of lead-free alternatives.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Applied
Asif Ali Siyal, Liu Yang, Babar Ali, Mahdi Hassan, Chunbao Zhou, Xiangtong Li, Imran Ahmed, Ahsanuallah Soomro, Guangqing Liu, Jianjun Dai
Summary: Searching and exploring for new biomass sources is crucial for biofuels production. Furfural residue pellets (FRPs), sawdust pellets (SPs), corn stalk pellets (CSPs), and sewage sludge pellets (SSPs) were produced and their quality was compared. The results showed that the properties of the pellets, such as density, strength, porosity, and moisture absorption, varied depending on their chemical composition. FRPs had the highest density and strength, while SPs had the highest strength. FRPs also had lower porosity and moisture absorption, indicating their potential for co-pelletization with other biomass sources. Moreover, FRPs, SPs, and CSPs met the set standards for heating value and had lower heavy metal contents compared to SSPs.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Hayden A. Evans, Dan Zhao, Pieremanuele Canepa, Anthony K. Cheetham, Dinesh Mullangi, Taner Yildirim, Yuxiang Wang, Zeyu Deng, Zhaoqiang Zhang, Thuc T. Mai, Fengxia Wei, John Wang, Angela R. Hight Walker, Craig M. Brown
Summary: The process of separating oxygen from air to create oxygen-enriched gas streams is important in both industrial and medical fields. However, existing technologies for this process are energy-intensive and require infrastructure. This study demonstrates that a metal-organic framework, Al(HCOO)3 (ALF), can effectively adsorb oxygen at near-ice temperatures, with good time-dependent selectivity. ALF exhibits a high oxygen adsorption capacity of approximately 1.7 mmol/g at 190K and atmospheric pressure, and approximately 0.3 mmol/g at salt-ice temperatures of 250K. ALF shows potential as a low-cost option for oxygen separation applications.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Zhaoqiang Zhang, Zeyu Deng, Hayden A. Evans, Dinesh Mullangi, Chengjun Kang, Shing Bo Peh, Yuxiang Wang, Craig M. Brown, John Wang, Pieremanuele Canepa, Anthony K. Cheetham, Dan Zhao
Summary: The exclusive capture of carbon dioxide (CO2) from hydrocarbon mixtures is crucial in the petrochemical industry. A new study introduces a ultramicroporous material, ALF, which can selectively capture CO2 from hydrocarbon mixtures with high capacity and efficiency. The material's unique pore chemistry allows for molecular recognition of CO2 by hydrogen bonding, while rejecting other hydrocarbons.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
Yakui Mu, Tan Wang, Zeyu Deng, Bun Chan, Tiesheng Wang
Summary: Organic crystals assembled by TTF-based molecules hold potential for electronics, smart materials, and superconductors. A fragment charge difference method was used to investigate the charge transfer properties of these crystals, and the results were consistent with another established method. The study also demonstrated the influence of structure and chemistry on charge transfer properties.
Article
Chemistry, Physical
Hengning Chen, Zeyu Deng, Yuheng Li, Pieremanuele Canepa
Summary: Niobate and tantalate coating materials can mitigate the interfacial reactivities in Li-ion and all-solid-state batteries by forming stable native defects and enhancing Li-ion transport. The multiphasic nature of Li-Nb-O and Li-Ta-O coatings, containing mixtures of LiNbO3 and Li3NbO4 or of LiTaO3 and Li3TaO4, was revealed through first-principles calculations.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Applied
Mengyan Yu, Changfa Zhang, Xiangtong Li, Yang Liu, Asif Ali Siyal, Junshen Qu, Jianjun Dai, Yanxin Yuan, Yajie Jin, Chenglong Liu
Summary: This study focused on the non-metallic components (NMCs) in waste printed circuit boards (WPCBs) during pyrolysis in a fluidized bed pyrolyzer (FBP). The addition of K2CO3, ZnO, CaO, and Fe2O3 at 650 degrees C effectively stabilized bromine. The characterization of pyrolysis char, pyrolysis oil, and pyrolysis gas was conducted, along with an investigation into the migration and transformation of bromine. The study proposed mechanisms for the cracking of brominated epoxy resin and the fixation of bromine.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Hayden A. Evans, Taner Yildirim, Peng Peng, Yongqiang Cheng, Zeyu Deng, Qiang Zhang, Dinesh Mullangi, Dan Zhao, Pieremanuele Canepa, Hanna M. Breunig, Anthony K. Cheetham, Craig M. Brown
Summary: This study demonstrates the remarkable hydrogen storage performance of aluminum formate at non-cryogenic temperatures and low pressures. The findings suggest that aluminum formate has potential for use in safe storage systems serving fuel cells.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Ziliang Wang, Tara P. Mishra, Weihang Xie, Zeyu Deng, Gopalakrishnan Sai Gautam, Anthony K. Cheetham, Pieremanuele Canepa
Summary: The development of high-performance sodium ion batteries requires improved electrode materials. The energy and power densities of NaSICON electrode materials show promise for large-scale energy storage applications. However, practical issues such as limited sodium extraction in low Na content NaSICONs present a challenge. Therefore, it is important to quantify the Na-ion mobility in a wide range of NaSICON electrodes.
ACS MATERIALS LETTERS
(2023)
Article
Optics
Zeyu Deng, Xiaohan Yang, Jinwen Zhang, Haoran Zhao, Yihang Han, Hao Dong, Jie Shen
Summary: Rare earth (RE) doped luminescent materials, particularly rare-earth-doped upconverting materials, have attracted significant research interest due to their diverse optical properties and potential applications in various fields. The upconverting luminescent efficiency of lanthanide compounds, which can convert low-energy photons into high-energy photons, is several orders of magnitude higher than other mechanisms. These upconverting materials exhibit intrinsic anti-Stokes shifts, making them suitable for biomedical imaging applications. Recent studies have focused on luminescent polarization, super-resolution luminescent imaging, and microcavity coupling of rare-earth-doped upconverting materials, which have contributed to advancements in photon upconversion applications.
CHINESE JOURNAL OF LASERS-ZHONGGUO JIGUANG
(2023)
Article
Chemistry, Multidisciplinary
Chen Sun, Zeyu Deng, Zhiyuan Li, Zhongwei Chen, Xuanyu Zhang, Jian Chen, Haipeng Lu, Pieremanuele Canepa, Rui Chen, Lingling Mao
Summary: Hybrid organic-inorganic antimony halides with high photoluminescence quantum yield (PLQY) have gained attention for their non-toxicity and stability. Five pairs of antimony halides with different structures were synthesized and characterized to investigate the factors contributing to high PLQY. The antimony halides with square pyramidal geometry exhibited near-unity PLQY, while those with seesaw dimmer geometry showed PLQY close to 0%. The longer Sb center dot center dot center dot Sb distances in the square pyramidal structures and other factors such as Sb-Cl distance and stability of antimony chlorides may influence PLQY. The findings provide valuable insights for the precise design of highly emissive materials in optoelectronic applications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
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.
