Article
Thermodynamics
K. Derakhshanpour, R. Kamali, M. Eslami
Summary: The study conducted 3-Dimensional numerical simulations to analyze laminar fluid flow and forced convection heat transfer through novel designs of microchannel heat sinks with cylindrical ribs. Incorporation of cylindrical ribs significantly enhanced heat transfer coefficient and reducing rib pitch had a greater effect on improving hydrothermal performance. Additionally, double-layered microchannels showed higher convection heat transfer coefficient and double-layered-design 1 microchannels performed the best with increased mass flow rate.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Lin Liu, Ziyong Cao, Chao Xu, Ling Zhang, Te Sun
Summary: This paper focuses on the numerical investigation of fluid flow and heat transfer characteristics in a microchannel heat sink with double-layered staggered cavities. The effects of expansion-to-contraction ratio and height ratio on the thermal performance are studied using numerical simulation. The results show that the double-layered staggered cavities can enhance heat transfer significantly.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Chemistry, Analytical
Miaolong Cao, Shi Cao, Jincheng Zhao, Jiayi Zhu
Summary: This paper proposes a microchannel heat sink model and investigates the impact of built-in ribs on the flow and heat transfer characteristics. Numerical simulation results show that the rectangular rib plate enhances heat transfer, but the comprehensive evaluation factor decreases with increasing rib length. The angle of the rib plate has little influence on heat transfer, while the thickness variation has the largest impact on the comprehensive evaluation factor. The optimal parameter combination is an angle of 0 degrees, a length of 7.5 mm, and a thickness of 0.2-0.3 mm.
Article
Energy & Fuels
Yang Xia, Li Chen, Jiwang Luo, Wenquan Tao
Summary: Topology optimization is used to improve the cooling performance of microchannel heat sinks. In this study, five different inlet and outlet structure combinations are optimized using bi-objective topology optimization based on the density method. The results show that the straight line inlet and outlet with extension areas (SE) can significantly reduce power dissipation while maintaining the same heat transfer performance. The effects of Reynolds number, the ratio of solid and fluid thermal conductivity, and the dimensionless heat generation coefficient are also investigated.
Article
Materials Science, Multidisciplinary
Jin Yuan, Yongfeng Qu, Ningkang Deng, Liang Du, Wenbo Hu, Xiaofan Zhang, Shengli Wu, Hongxing Wang
Summary: Four types of novel single crystal diamond straight microchannel heat sinks are designed and investigated, and compared with a conventional rectangular micro-channel heat sink. The results show that the novel heat sinks can enhance heat dissipation, with the V-shaped and X-shaped heat sinks having higher heat transfer capabilities and the inclined heat sink having lower pumping power. The X-shaped heat sink is found to be the most optimal in terms of performance evaluation.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Thermodynamics
Jian Song, Fei Liu, Yi Sui, Dalei Jing
Summary: This study numerically investigates the hydraulic and thermal performances of trapezoidal microchannel heat sinks, revealing that pressure drop increases with decreasing small-to-large end width ratio. Only TMCHS configurations with PCPFLI and RCCFLI show improved thermal performances as the ratio decreases, with lower thermal resistance and more uniform temperature distribution. The TMCHS with RCCFLI configuration exhibits the best overall thermal performance among the six configurations studied.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2021)
Article
Engineering, Multidisciplinary
Kittipong Sakamatapan, Mehrdad Mesgarpour, Jatuporn Kaew-On, Ahmet Selim Dalkilic, Ho Seon Ahn, Omid Mahian, Somchai Wongwises
Summary: This study presents a novel liquid-cooled heat sink based on constructal theory and investigates the influence of boundary conditions on heat transfer and pressure drop through experiments and numerical simulation. The results show that increasing the number of clusters can improve heat transfer efficiency, providing reference for the thermal management systems of next-generation compact heat sources.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Thermodynamics
Jingzhi Zhang, Jun An, Li Lei, Xinyu Wang, Gongming Xin, Zan Wu
Summary: This paper numerically studied the subcooled flow boiling in MMC heat sinks. The feasibility of using the Mixture multiphase flow model to simulate the subcooled flow boiling in the MMC heat sink is validated. The results show that the temperature distribution in the MMC heat sink is affected by the microchannel aspect ratio and the Mixture model is suitable for studying flow boiling in complex MMC.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Engineering, Environmental
Chaomeng Chen, Li Yi, Minqiang Pan
Summary: This study achieved a balance between heat transfer performance and flow performance of microchannel heat sinks through the establishment of an optimization objective function based on a complex network structure. The experimental results validated that the comprehensive performance of the optimized structure was better than the initial design structure, and the optimized structure with fewer fractal levels performed better.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Thermodynamics
Zengkun Zhan, Lixia Chen, Hongna Zhang, Chuandong Lin, Sining Li, Xiaobin Li, Fengchen Li
Summary: This research proposes a new technique for heat transfer enhancement using viscoelastic fluid pulsating laminar flow (VPL flow). Numerical studies and flow performance analysis show that VPL flow significantly improves the overall heat transfer performance, with optimal enhancement achieved at pulsation frequencies close to the characteristic frequency of the viscoelastic fluid flow.
APPLIED THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Bahram Jalili, Amirhossein Rezaeian, Payam Jalili, Fathollah Ommi, Davood Domiri Ganji
Summary: This study evaluates the heat transfer phenomena of a nanofluid stream through a microchannel heat sink under the influence of a magnetic field. Aluminum oxide-water nanofluid is used as the cooling fluid, and the Koo-Kleinstreuer model is applied to calculate the viscosity and thermal conductivity of the nanofluid. The porous medium is modeled using the improved Darcy relationship, and the dispersion type of the two-equation approach is used to simulate heat transfer between the solid and fluid zones. The results indicate that the magnetic field has a direct impact on the Nusselt number, and heat transfer increases with the concentration of the nanofluid, with the highest heat transfer achieved at a concentration of 0.04.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Serdar Ozguc, Trevor F. G. Teague, Liang Pan, Justin A. Weibel
Summary: Topology optimization generates complex geometry heat sink designs suitable for additive manufacturing. Homogenization approach creates microchannel heat sink designs corresponding to microstructures, eliminating the need for penalizing porosities. This study fabricates and tests topology optimized microchannel heat sinks using additive manufacturing, achieving high-performance designs. The effect of grid resolution on the designs and the physical dimensions of microstructures is investigated. The experimental results match the predicted Pareto optimality curve, demonstrating the effectiveness of the homogenization approach in generating optimized heat sink designs.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Thermodynamics
Serdar Ozguc, Liang Pan, Justin A. Weibel
Summary: Efficient thermal management is crucial for electronic devices with nonuniform thermal workloads. A flow-shifting design approach is proposed to fully utilize flow for multiple potential thermal workloads. By optimizing the flow path from each inlet, the flow-shifting heat sink can effectively cool the active heat map.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Thermodynamics
Xing-ping Tang, Huan-ling Liu, Li-si Wei, Chuan-geng Tang, Xiao-dong Shao, Han Shen, Gongnan Xie
Summary: In this study, bi-objective optimization design of mini-channels is implemented to obtain single-layer mini-channel heat sinks (SL-MHSs), which are then used as upper and lower layers to assemble double-layer mini channel heat sinks (DL-MHSs). Numerical results show that the new DL-MHSs can significantly reduce the maximum temperature, increase the Nusselt number, and decrease the total thermal resistance.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Thermodynamics
Nan Hu, Qinggong Wang, Shijie Liu, Junping Gu, Long Li, Junfu Lyu
Summary: This study presents the design and experimental evaluation of a double-layer microchannel heat sink for heat release of a small-size laser crystal. The narrow shape DL-MCHS shows good heat transfer capability and achieves an overall heat transfer coefficient of 42 x 10(3) W/(m(2)center dot K).
APPLIED THERMAL ENGINEERING
(2022)
Article
Chemistry, Physical
Bing-Bing Wang, Chao Yang, Zhi-Ming Xu, Xiao-Dong Wang, Wei-Mon Yan
Summary: The use of a rod electrode was found to effectively suppress particle aggregation and sedimentation in TiO2-H2O nanofluids. An optimal voltage of 0.5 kV was identified for maximum sedimentation suppression, while surface flaws on the electrode were found to be detrimental. The mechanism of sedimentation inhibition by the electrode was speculated to involve charge transfer via contact electrification.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2023)
Article
Thermodynamics
Shao-Fei Zheng, Zi-Yi Wu, Yi-Ying Gao, Yan-Ru Yang, Bengt Sunden, Xiao-Dong Wang
Summary: This study developed a coupled solver to investigate droplet condensation in a moist air environment. The results show that internal conduction, external diffusion, and internal convection have significant impacts on droplet condensation.
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
(2023)
Article
Thermodynamics
Xiaodong Xue, Wei Han, Zefeng Wang, Hongguang Jin, Xiaodong Wang
Summary: A solar-coal thermochemical hybrid power generation system based on supercritical water gasification is proposed in this paper, which utilizes concentrated solar energy to provide reaction heat for the gasification process at a low temperature. Through energy and exergy analysis, it is found that the proposed system achieves higher net power generation efficiency and exergy efficiency compared to the reference system. The thermochemical method significantly increases the chemical energy of the syngas produced by approximately 29.70%. The proposed system eliminates the need for an air separation unit and syngas purification unit, providing a promising method for the complementary utilization of solar energy and coal.
APPLIED THERMAL ENGINEERING
(2023)
Article
Chemistry, Physical
Quan Ding, Kai-Qi Zhu, Jiang-Hai Xu, Ben-Xi Zhang, Yan-Ru Yang, Chen Yang, Yu-Lin Wang, Duu-Jong Lee, Zhong-Min Wan, Xiao-Dong Wang
Summary: The impacts of amplitude and wavelength, two geometrical parameters of the wavy-flow field in a proton exchange membrane fuel cell (PEMFC), on cell performances were investigated using a three-dimensional, multiphase, and non-isothermal model. The results showed that amplitude and wavelength significantly affected oxygen transport, friction resistance, and current densities in PEMFC operations. The enhancement of current density peaked at an amplitude of 0.4 mm and a wavelength of 2 mm, with a 10.40% increase compared to the non-wavy design. The wavy channels increased the oxygen concentration gradient and viscous friction, resulting in increased entropy generation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Thermodynamics
Shao-Yu Wang, Zi-Jie Wang, Dan-Qi Wang, Yan-Ru Yang, Shao-Fei Zheng, Shu-Rong Gao, Xiao-Dong Wang, Duu-Jong Lee
Summary: This study investigates the correlations among wettability, dimple curvature radius, and nucleation characteristics on nanostructured surfaces. The results show that nucleation sites are located in the interior of dimples. Increasing surface hydrophobicity or dimple curvature radius would make nucleation more difficult. The obtained critical sizes of nuclei from molecular dynamics simulations are larger than the results estimated by the classical nucleation theory. Additionally, increasing the dimple number benefits the nucleation probability and condensation performance.
APPLIED THERMAL ENGINEERING
(2023)
Article
Chemistry, Physical
Ben -Xi Zhang, Zhi-Hui Cai, Quan Ding, Kai-Qi Zhu, Yan-Ru Yang, Xiao- Dong Wang
Summary: The coupling influence of wetting transitions and scale effects on the bouncing dynamics of nanodroplets on nanopillar-arrayed superhydrophobic surfaces was investigated via molecular dynamics (MD) simulations for the first time. It was found that two bouncing patterns, Cassie state bouncing and Wenzel state bouncing, were consistently observed on these surfaces with various aspect ratios and surface wettability. The contact time of Cassie state bouncing remained constant at the same Weber number, while that of Wenzel state bouncing increased with the increased aspect ratio. However, the contact time always increased with the increased surface wettability regardless of the bouncing pattern. Scaling laws of contact time were established for both bouncing patterns.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Mechanics
Jia-Xin Jin, Shu-Rong Gao, Bo-Jian Wei, Qi-Hui Jia, Shao-Fei Zheng, Yan-Ru Yang, Xiao-Dong Wang
Summary: When a droplet impacts a superhydrophobic surface with macro-ridges off-center, it can split into two asymmetric fragments that exhibit asymmetric spreading and retraction. The contact time of this impact depends on the volume of the larger fragment, which is determined by the off-center distance. This study investigates the dynamics of off-center impacts at relatively high Weber numbers using lattice Boltzmann method simulations to establish a quantitative relationship between the contact time and the volume of the larger fragment, as well as to understand the mechanism of liquid volume redistribution.
Article
Energy & Fuels
Zhongmin Wan, Hanzhang Yan, Yun Sun, Chen Yang, Xi Chen, Xiangzhong Kong, Yiyu Chen, Zhengkai Tu, Xiaodong Wang
Summary: Through experiments, it has been found that the use of a new cathode flow field with metal foam can improve the thermal management performance and output performance of air-cooled proton exchange membrane fuel cells (PEMFC). The metal foam with a height of 1 mm and a width of 5 mm showed the best performance, with a decrease in temperature by 8.4 degrees Celsius and an increase in output performance by 55.1%. Therefore, it is considered the optimal sample.
Article
Chemistry, Multidisciplinary
Ling-Zhe Zhang, Xu Chen, Yan-Ru Yang, Xiao-Dong Wang
Summary: In this study, the dynamic behavior of a low-viscosity droplet on a superhydrophobic surface was numerically investigated. It was found that the ridge on the surface can redistribute the droplet mass and affect the impact outcomes and contact time. In most cases, the contact time of the droplet on a ridged cylinder can be effectively shortened compared with that of a smooth cylinder.
Article
Chemistry, Multidisciplinary
Yi-Bo Wang, Yi-Feng Wang, Qiang Ma, Yan-Ru Yang, Duu-Jong Lee, Xiao-Dong Wang
Summary: Using molecular dynamics simulations, we studied the hole formation of water nanodroplets impacting hydrophilic to hydrophobic surfaces with different static contact angles and initial surface temperatures. We found that the hole dynamics of nanodroplets are different from millimeter-sized droplets, and the hole formation is influenced by surface temperature and wettability. A criterion is developed to predict the hole formation of nanodroplets based on thermal stability analysis. Additionally, we observed the ring-bouncing of nanodroplets triggered by the nucleated vapor bubble.
Article
Chemistry, Multidisciplinary
Shao-Fei Zheng, Yi-Ying Gao, Li-Tao Yang, Shu-Rong Gao, Yan-Ru Yang, Duu-Jong Lee, Bengt Sunden, Xiao-Dong Wang
Summary: Lubricant-infused porous surfaces can enhance the mobility of droplets and improve the heat transfer in dropwise condensation. The wettability and mobility of droplets on such surfaces are influenced by various factors, including interfacial interactions, surface features, and lubricant thickness. This study combines theoretical analysis and molecular dynamics simulations to investigate droplet wettability and mobility on lubricant-infused porous surfaces. The results suggest that a non-cloaking configuration with a thin lubricant layer is recommended for achieving high droplet mobility.
Article
Thermodynamics
Shao-Fei Zheng, We-Kai Liana, Jia-Xing Meng, He-Chen Wang, Shu-Rong Gao, Yan-Ru Yang, Hai-Wang Li, Bengt Sunden, Xiao-Dong Wang
Summary: This study focuses on optimizing the rib arrangements in cooling passages of a turbine blade cooling unit to improve heat transfer performance. The multi-parameter optimization algorithm is applied to find the optimal designs with different performance indices as objective functions. The results show that using the overall performance factor as the objective function can achieve significant reduction in friction loss with moderate heat transfer loss.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2024)
Article
Chemistry, Physical
Yulin Wang, Han Wang, Cheng Wang, Wei He, Yulong Zhao, Xiaodong Wang
Summary: This paper investigates the flow characteristics of water droplets on gas diffusion layer (GDL) surfaces with different roughnesses. The results show that the roughness of GDL surfaces has a significant impact on water droplet flow, with lower Polytetrafluoroethylene (PTFE) content leading to increased surface roughness and longer droplet discharge time, spreading area, and deformation. On the other hand, higher PTFE content results in smoother flow and shorter droplet discharge time. Comparatively, water droplet flow on rough GDL surfaces exhibits longer discharge time, larger spreading area, stronger fluctuations, and larger pressure drop compared to smooth GDL surfaces.
JOURNAL OF POWER SOURCES
(2024)
Article
Thermodynamics
Yi-Bo Wang, Ling-Feng Huang, Ning Lan, Shuo-Lin Wang, Ben-Xi Zhang, Yan-Ru Yang, Xiao-Dong Wang, Duu-Jong Lee
Summary: This study numerically investigated the heat transfer process in a wavy channel enhanced by electrohydrodynamics (EHD), and found that the mechanisms of EHD-enhanced heat transfer differ from a straight channel. Based on the simulation results, strategies for aligning multielectrodes in wavy channels were proposed, and design criteria for enhanced heat transfer performance in discontinuous wavy channels with multiple electrodes were provided.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Lin Lin, Zhen-Hua Jing, Shao-Fei Zheng, Wei-Hsin Chen, Duu-Jong Lee, Xiao-Dong Wang
Summary: In this work, a new carrier transport model for hetero-junction thermoelectric generators is developed, and multiple micro TEG designs are studied to investigate their performance. The results show that both homo-heterojunction and inverse-heterojunction significantly improve the thermoelectric performance, with homo-heterojunction performing better at low working temperatures and inverse-heterojunction performing better at high working temperatures. Finally, a novel heterojunction combining both homo-and inverse-heterojunction is proposed, which further improves the thermoelectric efficiency.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Thermodynamics
Pengcheng Zhao, Jingang Wang, Liming Sun, Yun Li, Haiting Xia, Wei He
Summary: The production of green hydrogen through water electrolysis is crucial for renewable energy utilization and decarbonization. This research explores the optimal electrode configuration and system design of compactly-assembled industrial electrolyzer. The findings provide valuable insights for industrial application of water electrolysis equipment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
V. Baiju, P. Abhishek, S. Harikrishnan
Summary: Thermally driven adsorption desalination systems (ADS) have gained attention as an eco-friendly solution for water scarcity. However, they face challenges related to low water productivity and scalability. To overcome these challenges, integrating ADS with other desalination technologies can create a small-scale hybrid system. This study proposes integrating ADS with a Thermo Electric Dehumidification (TED) unit to enhance its performance.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
C. X. He, Y. H. Liu, X. Y. Huang, S. B. Wan, Q. Chen, J. Sun, T. S. Zhao
Summary: A decentralized centroid multi-path RC network model is constructed to improve the temperature prediction accuracy compared to traditional RC models. By incorporating multiple heat flow paths and decentralizing thermal capacity, a more accurate prediction is achieved.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chaoying Li, Meng Wang, Nana Li, Di Gu, Chao Yan, Dandan Yuan, Hong Jiang, Baohui Wang, Xirui Wang
Summary: There is an urgent need to shift away from heavy dependence on fossil fuels and embrace renewable energy sources, particularly in the energy-intensive oil refining process. This study presents an innovative concept called the Solar Oil Refinery, which applies solar energy in oil refining. A solar multi-energies-driven hybrid chemical oil refining system that utilizes solar pyrolysis and electrolysis has been developed, significantly improving solar utilization efficiency, cracking rate, and hydrogen yield.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chao Ma, Guanghui Wang, Dingbiao Wang, Xu Peng, Yushen Yang, Xinxin Liu, Chongrui Yang, Jiaheng Chen
Summary: This study proposes a bio-inspired fish-tail wind rotor to improve the wind power efficiency of the traditional Savonius rotor. Through transient simulations and orthogonal experiments, the key factors affecting the performance are identified. A response surface model is constructed to optimize the power coefficient, resulting in an improvement of 9.4% and 6.6% compared to the Savonius rotor.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sina Bahmanziari, Abbas-Ali Zamani
Summary: This paper proposes a new framework for improving electrical energy harvesting from piezoelectric smart tiles through a combination of magnetic plucking, mechanical impact, and mechanical vibration force mechanisms. Experimental results demonstrate a significant increase in energy yield and average energy harvesting time compared to other mechanisms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Nanjiang Dong, Tao Zhang, Rui Wang
Summary: This study establishes a multiobjective mixed-variable configuration optimization model for a comprehensive combined cooling, heating, and power energy system, and proposes an efficient generating operator to optimize this model. The experimental results show that the proposed algorithm performs better than other state-of-the-art algorithms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Ahmed E. Mansy, Eman A. El Desouky, Tarek H. Taha, M. A. Abu-Saied, Hamada El-Gendi, Ranya A. Amer, Zhen-Yu Tian
Summary: This study aims to convert office paper waste into bioethanol through a sustainable pathway. The results show that physiochemical and enzymatic hydrolysis of the waste can yield a high glucose concentration. The optimal conditions were determined using the Box-Behnken design, and a blended membrane was used for ethanol purification.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sven Klute, Marcus Budt, Mathias van Beek, Christian Doetsch
Summary: Heat pumps are crucial for decarbonizing heat supply, and steam generating heat pumps have the potential to decarbonize the industrial sector. This paper presents the current state, technical and economic data, and modeling principles of steam generating heat pumps.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Le Zhang, To-Hung Tsui, Yen Wah Tong, Pruk Aggarangsi, Ronghou Liu
Summary: This study investigates the effectiveness of a current-carrying-coil-based magnetic field in promoting anaerobic digestion of chicken manure. The results show that the applied magnetic field increases methane yield, decreases carbon dioxide production, and reduces the concentration of ammonia nitrogen. Microbial community analysis reveals the enrichment of certain methanogenic genera and enhanced metabolic pathways. Pilot-scale experiments confirm the technical effectiveness of the magnetic field assistance in enhancing anaerobic digestion of chicken manure.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Bo Chen, Ruiqing Ma, Yang Zhou, Rui Ma, Wentao Jiang, Fan Yang
Summary: This paper presents an advanced energy management strategy for fuel cell hybrid electric heavy-duty vehicles, focusing on speed planning and energy allocation. By utilizing predictive co-optimization control, this strategy ensures safe inter-vehicle distance and minimizes energy demand. Simulation results demonstrate the effectiveness of the proposed method in reducing fuel cell degradation cost and overall operation cost.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Fabio Fatigati, Roberto Cipollone
Summary: Organic Rankine Cycle-based microcogeneration systems that use solar sources to generate electricity and hot water can help reduce CO2 emissions in residential energy-intensive sectors. The adoption of a recuperative heat exchanger in these systems improves efficiency, reduces thermal power requirements, and saves on electricity costs.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Lipeng He, Renwen Liu, Xuejin Liu, Xiaotian Zheng, Limin Zhang, Jieqiong Lin
Summary: This research proposes a piezoelectric-electromagnetic hybrid energy harvester (PEHEH) for low-frequency wave motion and self-sensing wave environment monitoring. The PEHEH shows promising power output and the ability to self-power and self-sense the wave environment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Shangling Chu, Yang Liu, Zipeng Xu, Heng Zhang, Haiping Chen, Dan Gao
Summary: This paper studies a distributed energy system integrated with solar and natural gas, analyzes the impact of different parameters on its energy utilization and emissions reduction, and obtains the optimal solution through an optimization algorithm. The results show that compared to traditional separation production systems, this integrated system achieves higher energy utilization and greater reduction in carbon emissions.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Qingpu Li, Yaqi Ding, Guangming Chen, Yongmei Xuan, Neng Gao, Nian Li, Xinyue Hao
Summary: This paper proposes and studies a piston-type thermally-driven pump with a structure similar to a linear compressor, aiming to eliminate the high-quality energy consumption of existing pumps and replace mechanical pumps. The coupling mechanism of working fluid flow and element dimension is analyzed based on force analysis, and experimental data analysis is used to determine the pump operation stroke. Theoretical simulation is conducted to analyze the correlation mechanism of the piston assembly. The research shows that the thermally-driven pump can greatly reduce power consumption and has potential for industrial applications.
ENERGY CONVERSION AND MANAGEMENT
(2024)