Article
Chemistry, Physical
Shang Wu, Huanlei Zhao, Xin Xu, Chaoyang Liu, Penghui Zhang, Shuaishuai Fu, Qiong Su, Yuzhi Sun, Quanlu Yang, Hui Peng
Summary: This study presents a convenient strategy for the preparation of oxygen reduction catalysts with multiple heteroatomic doping, abundant defects, and porous and layered structures. The catalyst exhibits rich active sites and rapid mass/electron transport channels, leading to excellent oxygen reduction reaction activity and performance in zinc-air batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Kaixin Liang, Hui Zhang, Yongfeng Liang, Shun-Li Shang, Zi-Kui Liu, Junpin Lin
Summary: By coordinating nitrogen doping and pore structure, N-doped porous carbon materials were fabricated with highly comparable properties to commercial Pt/C catalysts. These carbon catalysts exhibited high catalytic activity and peak power density, making them highly feasible for practical applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Hao-Yu Wang, Jin-Tao Ren, Chen-Chen Weng, Xian-Wei Lv, Zhong-Yong Yuan
Summary: The study successfully prepared nitrogen and sulfur dual-doped hierarchically porous carbon with trapped Mn species as a non-noble metal-based electrocatalyst, showing excellent catalytic performance and long-term stability, which is of great significance for practical application in energy conversion systems.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Chemistry, Physical
Shihong Chen, Haowen Ren, Yang Qiu, Chunhui Luo, Qiang Zhao, Wei Yang
Summary: In this study, a flower-like porous carbon material was designed to synthesize Co/Zn/Mn@NC, which showed excellent bifunctional catalytic activity with a half-wave potential of 0.86 V for oxygen reduction reaction (ORR) and an overpotential of 360 mV for oxygen evolution reaction (OER) at 10 mA/cm2. The Zn-Air battery (ZAB) with Co/Zn/Mn@NC-800 exhibited a higher power density of 163 mW/cm2 and a specific capacity of 832 mA h/gZn compared to Pt/C + RuO2. Moreover, the Co/Zn/Mn@NC-800-based ZAB showed superior long-term stability with only a 0.3% decline in efficiency after 534 cycles (>150 h). These results suggest that the synthesized Co/Zn/Mn@NC catalyst has great potential for practical application in ZABs.
JOURNAL OF POWER SOURCES
(2023)
Article
Electrochemistry
Chengsi Hu, Jun Chen, Yaqin Wang, Yan Huang, Shitao Wang
Summary: The development of high-efficiency, low-cost, and stable bifunctional catalysts is crucial for the large-scale application of zinc-air batteries. In this study, a telluride-doped porous carbon catalyst was synthesized and exhibited excellent electrocatalytic performance, providing a strategy to enhance the performance of zinc-air batteries.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Yali Wang, Ruihui Gan, Sa Zhao, Wenjun Ma, Xiangwu Zhang, Yan Song, Chang Ma, Jingli Shi
Summary: This study developed a cost-effective and efficient bifunctional electrocatalyst for oxygen reduction and oxygen evolution reactions. The catalyst exhibited impressive performance and small potential gap due to the synergistic effect of B, N, and F heteroatoms, large specific surface area, and abundant defect sites. The liquid and solid-state zinc-air batteries assembled with the catalyst demonstrated high open circuit potential, large specific capacity, and satisfactory cycling stability, indicating potential application in flexible and wearable electronic devices.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Yumao Kang, Wei Wang, Jinmei Li, Sarah Imhanria, Yaxin Hao, Ziqiang Lei
Summary: A carbonization-etching approach was used to prepare ultrathin B, N co-doped porous carbon nanosheets (BN-PCN) with hierarchically porous structure and large specific surface area, showing high catalytic activities for both ORR and OER. The BN-PCN exhibited superior stability compared to commercial Pt/C and demonstrated excellent power density and energy efficiency in a Zn-air battery setup. This study provides a promising avenue for designing heteroatom-doped porous carbon materials for clean energy conversion and storage applications.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Jizheng Feng, Ranxiao Tang, Xingyi Wang, Tao Meng
Summary: Biomass-derived activated carbon prepared using wheat straw showed excellent oxygen reduction reaction (ORR) behavior, leading to high-performance zinc-air batteries with a high trip efficiency and long cycle life. This was achieved by tuning the oxygen functional groups and pore volume of the activated carbon using a mixed activator of potassium carbonate and potassium hydroxide.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Engineering, Environmental
Haoran Pan, Xinning Huang, Zhenjie Lu, Zhiqiang Zhang, Baigang An, Dongling Wu, Tao Wang, Xingxing Chen, Fangyi Cheng
Summary: This study presents a hybrid Co-based carbon composite derived from ZIF-67 as a bifunctional ORR/OER electrocatalyst, showing excellent performance and stability in a custom-built Zn-air battery. The catalyst, with multiple active sites including Co-N4, Co-N/SC, C-N/S-C, Co3O4 and CoS, as well as surface and edge defects in the carbon matrix, exhibits highly efficient bifunctional ORR/OER catalytic activity for reversible oxygen electrodes. The catalyst demonstrates competitive performance against state-of-the-art bifunctional ORR/OER electrocatalysts reported to date, positioning it among the best non-precious metal catalysts for reversible oxygen reactions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Peng Wei, Xiaogang Li, Zhimin He, Xueping Sun, Qirui Liang, Zhengying Wang, Chun Fang, Qing Li, Hui Yang, Jiantao Han, Yunhui Huang
Summary: This study introduces a solid-phase route to prepare porous nitrogen and boron co-doped carbon nanotubes catalysts, demonstrating superior catalytic performance in both acidic and alkaline electrolytes. The catalyst also shows high operating voltage and peak power density in Zn-air batteries, showcasing comparable electrocatalytic performance to commercial Pt/C catalyst.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Li Xu, Suqin Wu, Daijie Deng, Can Wang, Junchao Qian, Guifen Lu, Henan Li
Summary: The study successfully enhanced the performance of oxygen reduction reaction and zinc-air batteries by synthesizing Fe, Co co-doped tungsten carbide/nitrogen-doped carbon catalyst.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Hong Li, Xinxin Shu, Peiran Tong, Jihui Zhang, Pengfei An, Zhengxing Lv, He Tian, Jintao Zhang, Haibing Xia
Summary: Fe-Ni ANC@NSCA catalysts anchored on N, S co-doped carbon aerogel were successfully prepared by optimal pyrolysis of polyaniline aerogels derived from the freeze-drying of PANI hydrogels obtained by the polymerization of aniline monomers in the co-presence of tannic acid, Fe3+, and Ni2+ ions. These catalysts showed excellent performance in both oxygen reduction reaction and oxygen evolution reaction, surpassing state-of-the-art commercial catalysts.
Article
Chemistry, Physical
Lin Wu, Shuxin Li, Lixiang Li, Han Zhang, Lin Tao, Xin Geng, Haiming Yang, Weimin Zhou, Chengguo Sun, Dongying Ju, Baigang An
Summary: In this study, vanadium-doped Co9S8 nanoparticles encapsulated in nitrogen-doped porous carbon nanoflowers were prepared and applied as a bifunctional catalyst for the cathode of a rechargeable zinc-air battery. The catalyst exhibited excellent electrochemical performance, outperforming noble metal catalysts and recent Co-based catalysts.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Tao Yu, Yiting Che, Hao Fu, Dingfeng Ma, Wenjia Zhao, Shitan Yan, Ting Bian, Liuting Zhang
Summary: This study presents a promising porous composite, Co9S8@NSC, which integrates N and S co-doped carbon aerogels with Co9S8 nanoparticles for ideal oxygen reduction reaction (ORR) electrocatalysts. The collaboration of ORR-active Co9S8 nanoparticles and N and S co-doped carbon aerogels significantly improves ORR performance. Co9S8@NSC demonstrates competitive ORR activity and exhibits excellent long-term stability when used as an air cathode catalyst in primary Zn-air batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Review
Nanoscience & Nanotechnology
Aniruddha Kundu, Sourav Mallick, Santanu Ghora, C. Retna Raj
Summary: This article highlights the importance of nonprecious metal oxygen electrocatalysts in electrochemical energy conversion and storage technologies, as well as the emerging trends and advantages of these catalysts.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Gaofeng Chen, Olga A. Syzgantseva, Maria A. Syzgantseva, Shuliang Yang, Guihua Yan, Li Peng, Changyan Cao, Wenxing Chen, Zhiwei Wang, Fengjuan Qin, Tingzhou Lei, Xianhai Zeng, Lu Lin, Weiguo Song, Buxing Han
Summary: By anchoring Co and Cu sites onto a hierarchical porous N-doped carbon matrix, we designed a diatomic catalyst (Co/Cu-N-C) that exhibits outstanding performance in higher alcohol synthesis. With a CO conversion of 81.7%, it achieves a C(2+)OH selectivity of 58.5% and a remarkable C2+OH STY of 851.8 mg/g center dot h. The N-4-Co-1 and Cu-1-N-4 sites demonstrate excellent synergistic effects, with CO adsorbing on the Co site and surrounding nitrogen sites acting as a hydrogen reservoir for CO reduction reactions to form CHxCo. Simultaneously, the Cu sites stabilize a CHOCu species to interact with CHxCo, promoting barrier-free formation of C-2 species and enhancing the selectivity of higher alcohols.
Article
Engineering, Environmental
Shuai Li, Guichu Yue, Huaike Li, Jingchong Liu, Lanlan Hou, Nu Wang, Changyan Cao, Zhimin Cui, Yong Zhao
Summary: This work demonstrates the preparation of nitrogen doped carbon immobilized Pd single atom catalysts (SACs) with high loading through co-axial emulsion electrospinning and CO2 thermal activating method. The resulting Pd SACs carbon fibers have a bamboo-like tubular structure with multiscale pores, allowing easy access to the active sites. These multiscale porous hollow Pd SACs exhibit excellent activity and selectivity for phenylacetylene semi-hydrogenation. Moreover, this universal method can be applied for the preparation of other 1D metal SACs, offering great potential in the development of easily available and efficient SACs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Yunfeng Qiu, Xiaofan Dai, Yanping Wang, Xinyang Ji, Zhuo Ma, Shaoqin Liu
Summary: This study develops a facile and large-scale method to prepare bifunctional HER and UOR electrocatalysts for H-2 production via urea electrolysis in a less-energy saving way.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Jia Yu, Weiming Chen, Feng He, Weiguo Song, Changyan Cao
Summary: The interfacial interaction between carbon-supported catalysts and graphdiyne-supported cuprous oxide nanoclusters is demonstrated in this study, leading to a new type of electronic oxide-graphdiyne strong interaction. This interaction stabilizes the nanoclusters in a low-oxidation state without aggregation and oxidation, and improves catalytic activity through optimized adsorption energy for reactants/intermediates. This research contributes to the comprehensive understanding of interfacial interactions in supported catalysts.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Guichu Yue, Yu Yu, Shuai Li, Huaike Li, Songwei Gao, Yaqiong Wang, Wei Guo, Nue Wang, Xiuling Li, Zhimin Cui, Changyan Cao, Lei Jiang, Yong Zhao
Summary: A strategy for boosting chemoselective hydrogenation of nitro compounds to amino compounds on Pt@Fe2O3 is proposed. The strategy involves gradient oxygen vacancy, hydrogen spillover, and preferential adsorption. The catalyst shows high activity, selectivity, and easy recovery, making it a promising avenue for selective hydrogenation catalysis of various nitroaromatics.
Article
Chemistry, Physical
Hongqiang Jin, Peixin Cui, Changyan Cao, Xiaohu Yu, Runqing Zhao, Ding Ma, Weiguo Song
Summary: Regulating the density of metal single atoms and exploring their interaction can enhance the performance of single-atom catalysts (SACs). In this study, a series of Cu SACs with densities ranging from 0.1 to 2.4 atoms/nm2 were produced. It was found that the catalytic activity in the benzene hydroxylation reaction was proportional to the Cu single-atom density. Mechanistic studies revealed that the interactions among neighboring single-atom moieties in ultra-high-density Cu SACs altered the electronic structures of Cu single atoms, resulting in stronger center dot OH adsorption, which improved the benzene hydroxylation reaction by suppressing the formation of O2.
Article
Multidisciplinary Sciences
Yunfeng Qiu, Xiao Guo, Yahui Wang, Rui Tian, Chuan Wei, Shuang Liu
Summary: This paper conducts a numerical simulation study on the deposition process of aerosol particles on the surface of photovoltaic (PV) modules. The influence of various factors such as inflow wind velocity, particle diameter, installation angle, and particle concentration on the deposition process is analyzed, and a prediction model for deposition rate is proposed. The research provides important theoretical guidance for the formulation of cleaning strategies for the surface of PV modules.
ADVANCED THEORY AND SIMULATIONS
(2023)
Article
Chemistry, Multidisciplinary
Hongqiang Jin, Runqing Zhao, Peixin Cui, Xiaolong Liu, Jie Yan, Xiaohu Yu, Ding Ma, Weiguo Song, Changyan Cao
Summary: The study reports a new Sabatier phenomenon in hydrogenation reactions induced by single-atom density at the atomic scale. A series of Ir single-atom catalysts (SACs) with a predominantly Ir-1-P-4 coordination structure are produced. The study reveals the Sabatier principle as an insightful guidance for the rational design of more efficient and practicable SACs for hydrogenation reactions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Engineering, Multidisciplinary
ZhiMing Xu, XiaoLiang Wang, HongPeng Jiang, ZhiRong Zhang, DeBin Shan, Bin Guo, YunFeng Qiu, Jie Xu
Summary: In this study, reduced graphene oxide (rGO) coatings with micron pores and controllable oxygen contents were prepared on an aluminum substrate, leading to enhanced pool boiling performance. The heat transfer coefficient for Al/rGO(450) is 37.2 kW m(-2) K-1, which is increased by 112.6% compared with bare aluminum. The hydrophilic and aerophobic rGO coatings effectively promote liquid infiltration and bubble departure during the boiling process.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2023)
Article
Multidisciplinary Sciences
Hongqiang Jin, Kaixin Zhou, Ruoxi Zhang, Hongjie Cui, Yu Yu, Peixin Cui, Weiguo Song, Changyan Cao
Summary: We report a general and facile strategy for the synthesis of densely populated single-atom catalysts and investigate the influence of density on the electronic structure and catalytic performance in alkene epoxidation with O-2. By increasing the Co loading from 5.4 wt% to 21.2wt%, the turnover frequency and mass specific activity in trans-stilbene epoxidation are significantly enhanced by 10 times and 30 times, respectively. The electronic structure of densely populated Co atoms is altered through charge redistribution, resulting in less Bader charger and higher d-band center, which are more beneficial for the activation of O-2 and trans-stilbene.
NATURE COMMUNICATIONS
(2023)
Review
Chemistry, Physical
Jia Yu, Yida Yang, Yuliang Li, Changyan Cao, Weiguo Song
Summary: Supported metal catalysts using GDY as a promising catalyst support have shown rapid progress in thermocatalytic reactions, benefiting from the electronic interaction between the support and active components.
Article
Chemistry, Physical
Hongqiang Jin, Peixin Cui, Changyan Cao, Xiaohu Yu, Runqing Zhao, Ding Ma, Weiguo Song
Summary: Regulating the density of metal single atoms and exploring their interaction can enhance the performance of single-atom catalysts. In this study, copper single-atom catalysts were synthesized and it was found that the catalytic activity is proportional to the density of copper single atoms. Mechanistic studies revealed that the interactions among neighboring single-atom moieties in high-density copper single-atom catalysts alter the electronic structures, leading to improved adsorption and suppressing side reactions. The ultrahigh-density copper single-atom catalyst exhibited significantly higher activity and utilization efficiency compared to previous reports, providing a practical catalyst for phenol production.
Article
Thermodynamics
Zhiming Xu, Xiangdong Zhou, Yunfeng Qiu, Jie Xu, Debin Shan, Bin Guo
Summary: In this study, N-doped carbon nanocoatings were prepared on Cu oxide cones by assembly and subsequent pyrolysis of polydopamine. The modified Cu substrate with NC coated Cu oxides showed significantly enhanced boiling heat transfer performance. The vertically-oriented in-plane heat dissipation direction, abundant nucleation sites, and superhydrophilicity of the NC coating synergistically improved the boiling performance.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2024)
Article
Computer Science, Artificial Intelligence
Xing Wei, Yunfeng Qiu, Zhiheng Ma, Xiaopeng Hong, Yihong Gong
Summary: There has been a growing interest in using computer vision and machine learning techniques to count crowds. Most existing methods heavily rely on fully-supervised learning and require a lot of labeled data. To address this issue, the study focuses on the semi-supervised learning paradigm and proposes a multiple representation learning method to train several models.
IEEE TRANSACTIONS ON IMAGE PROCESSING
(2023)
Article
Chemistry, Physical
Huidong Li, Lu Zhang, Ruiwen Wang, Jinzhi Sun, Yunfeng Qiu, Shaoqin Liu
Summary: In this study, hierarchical porous carbon foams were developed as anodes for microbial fuel cells (MFCs), which showed significantly improved power density and current density. This provides a new idea for the design of high-performance MFC anodes.
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.
