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Performance Design of High-Temperature Chloride Salts as Thermal Energy Storage Material

Journal of Thermal Science 2024年第2期33卷 479-490页

作者： ZHAO Le WANG Jingyao CUI Liu LI Baorang DU Xiaoze wu hongwei Key Laboratory of Power Station Energy Transfer Conversion and System(North China Electric Power University) Ministry of EducationBeijing102206China School of Energy and Power Engineering Lanzhou University of TechnologyLanzhou730050China School of Physics Engineering and Computer ScienceUniversity of HertfordshireHatfieldAL109ABUK

The chloride salts have great potential used as high-temperature thermal energy storage(TES) medium for the concentrated solar power system.In this study,LiCl,KCl and CaCl_(2) were selected as energy storage materials in order to further broaden the working temperature of ternary chloride salt and improve its energy storage density.The new high-temperature energy storage ternary chloride composed of LiCl,KCl,and CaCl_(2) was developed based on the phase diagram generated by FactSage.Three components of LiCl-KCl-CaCl_(2) with the mass ratio of 37.85%-53.38%-8.77%,30.90%-13.82%-55.28% and 1.78%-18.61%-79.61% were developed,of which the corresponding melting temperature(T_(m)) 340.93,433.57 and 626.85℃,respectively,was obtained either.Considering that T_(m) of the third group of salts was too high,only the first two groups of salts were tested.DSC test showed that the actual melting point was only 0.46% and 1.64% different from the melting point predicted by Factsage.The thermal properties of the two ternary chloride salts were also compared.The solid and liquid-specific heat of ternary salts was determined by DSC using sapphire as the standard reference.The vapor pressure and decomposition temperature of ternary chloride salts were investigated.The results showed that the vapor pressure of salt 1 was almost constant below 650℃ by FactSage.Meanwhile,the TG results showed that the upper working temperature of salt 1 was 650℃ under the air atmosphere.In addition,the ternary chloride salts after short-term cycling still exhibited excellent thermal properties,which revealed that these good thermal properties make them have broad application prospects in high-temperature thermal energy storage systems.

关键词： chloride salts thermal energy storages thermal properties thermal stability

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Generation of ring-shaped human iPSC-derived functional heart microtissues in a M?bius strip configuration

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Bio-Design and Manufacturing 2022年第4期5卷 687-699页

作者： Yan Xu Jingqi Qi Wenyan Zhou Xing Liu Longbo Zhang Xudong Yao hongwei wu Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine Central South UniversityChangsha 410013China Zhejiang University-University of Edinburgh Institute Haining 314400China Xiangya Hospital Central South UniversityChangsha 410008China Department of Neurosurgery School of MedicineYale UniversityNew HavenCTUSA International Institutes of Medicine The Fourth Affiliated HospitalZhejiang University School of MedicineYiwu 322000China

Although human-induced pluripotent stem cell-derived cardiomyocytes(hi PSC-CMs) have been used for disease modeling and drug discovery, clinically relevant three-dimensional(3D) functional myocardial microtissues are lacking. Here, we developed a novel ring-shaped cardiac microtissue comprised of chamber-specific tissues to achieve a geometrically non-orientable ventricular myocardial band, similar to a M?bius loop. The ring-shaped cardiac tissue was constructed of hi PSC-CMs and human cardiac fibroblasts(h CFs) through a facile cellular self-assembly approach. It exhibited basic anatomical structure,positive cardiac troponin T(c Tn T) immunostaining, regular calcium transients, and cardiac-like mechanical strength. The cardiac rings can be self-assembled and scaled up into various sizes with outstanding stability, suggesting their potential for precise therapy, pathophysiological investigation, and large-scale drug screening.

关键词： Human iPSCs Ring-shaped myocardial microtissue Ring-shaped cardiac tissue Myocardial tube

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Fabrication of bimetallic Ag/Fe immobilized on modified biochar for removal of carbon tetrachloride

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Journal of Environmental Sciences 2017年第4期29卷 346-357页

作者： hongwei wu Qiyan Feng School of Environmental Science and Spatial Informatics China University of Mining and Technology Department of Chemistry Zaozhuang University

As an effective conventional absorbent, biochar exhibited limited adsorption ability toward small hydrophobic molecules. To enhance the adsorption capacity, a novel adsorbent was prepared by immobilizing nanoscale zero-valent iron onto modified biochar（MB） and then the elemental silver was attached to the surface of iron（Ag/Fe/MB）. It＇s noted that spherical Ag/Fe nanoparticles with diameter of 51 nm were highly dispersed on the surface of MB. As the typical hydrophobic contaminant, carbon tetrachloride was selected for examining the removal efficiency of the adsorbent. The removal efficiencies of carbon tetrachloride by original biochar（OB）, Ag/Fe, Ag/Fe/OB and Ag/Fe/MB were fully investigated. It＇s found that Ag/Fe/MB showed higher carbon tetrachloride removal efficiency, which is about 5.5 times higher than that of the OB sample due to utilizing the merits of high adsorption and reduction. Thermodynamic parameters revealed that the removal of carbon tetrachloride by Ag/Fe/MB was a spontaneous and exothermic process, which was affected by solution p H, initial carbon tetrachloride concentration and temperature. The novel Ag/Fe/MB composites provided a promising material for carbon tetrachloride removal from effluent.

关键词： Bimetallic Ag/Fe nanoparticles Modified biochar Carbon tetrachloride

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Seamless and early gap healing of osteochondral defects by autologous mosaicplasty combined with bioactive supramolecular nanofiber-enabled gelatin methacryloyl(BSN-GelMA)hydrogel

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Bioactive Materials 2023年第1期19卷 88-102页

作者： hongwei wu Yuna Shang Wei Sun Xinyi Ouyang Wenyan Zhou Jieji Lu Shuhui Yang Wei Wei Xudong Yao g Xiaozhao Wang Xianzhu Zhang Yishan Chen Qiulin He Zhimou Yang hongwei Ouyang Dr.Li Dak Sum&Yip Yio Chin Center for Stem Cells and Regenerative Medicine and Department of Orthopedic Surgery of the Second Affiliated HospitalZhejiang University School of MedicineHangzhouChina Department of Sports Medicine Zhejiang University School of MedicineHangzhouChina Zhejiang University-University of Edinburgh Institute Zhejiang University School of Medicineand Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang ProvinceZhejiang University School of MedicineHangzhouChina China Orthopedic Regenerative Medicine Group(CORMed) HangzhouChina College of Chemistry Tianjin Normal UniversityTianjin300387PR China Faculty of Science The University of MelbourneParkvilleVIC3010Australia International Institutes of Medicine The 4th Affiliated Hospital of Zhejiang University School of MedicineYiwuZhejiangChina Key Laboratory of Bioactive Materials Ministry of EducationState Key Laboratory of Medicinal Chemical BiologyCollege of Life SciencesCollaborative Innovation Center of Chemical Science and Engineeringand National Institute of Functional MaterialsNankai UniversityTianjin300071China

Autologous mosaicplasty is a common approach used to treat osteochondral defects in clinical practice.Gap integration between host and transplanted plugs requires bone tissue reservation and hyaline cartilage regeneration without uneven surface,graft necrosis and sclerosis.However,poor gap integration is a serious concern,which eventually leads to deterioration of joint function.To deal with such complications,this study has developed a strategy to effectively enhance integration of the gap region following mosaicplasty by applying injectable bioactive supramolecular nanofiber-enabled gelatin methacryloyl(GelMA)hydrogel(BSN-GelMA).A rabbit osteochondral defect model demonstrated that BSN-GelMA achieved seamless osteochondral healing in the gap region between plugs of osteochondral defects following mosaicplasty,as early as six weeks.Moreover,the International Cartilage Repair Society score,histology score,glycosaminoglycan content,subchondral bone volume,and collagen II expression were observed to be the highest in the gap region of BSN-GelMA treated group.This improved outcome was due to bio-interactive materials,which acted as tissue fillers to bridge the gap,prevent cartilage degeneration,and promote graft survival and migration of bone marrow mesenchymal stem cells by releasing bioactive supramolecular nanofibers from the GelMA hydrogel.This study provides a powerful and applicable approach to improve gap integration after autologous mosaicplasty.It is also a promising off-the-shelf bioactive material for cell-free in situ tissue regeneration.

关键词： Mosaicplasty Osteochondral integration Bioactive supramolecular nanofiber GelMA hydrogel Tissue engineering

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High-resolution aging niche of human adipose tissues

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Signal Transduction and Targeted Therapy 2023年第4期8卷 1368-1371页

作者： Wenyan Zhou Junxin Lin Yan Xie Xueqing Hu Xudong Yao Yuemin Ou hongwei wu Yiyang Yan Xiumao Li Jianan Lou Aaron Trent Irving James Q.Wang hongwei Ouyang Dr.Li Dak Sum&Yip Yio Chin Center for Stem Cells and Regenerative Medicine and Department of Orthopedic Surgery of the Second Affiliated HospitalZhejiang University School of MedicineHangzhou 310058China Department of Sports Medicine Zhejiang University School of MedicineHangzhou 310058China Zhejiang University-University of Edinburgh Institute Zhejiang University School of Medicineand Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang ProvinceZhejiang University School of MedicineHangzhou 310058China Tissue Organ Bank&Tissue Engineering Centre General Hospital of Ningxia Medical UniversityNingxia 750003China Department of Plastic Surgery The Second Affiliated HospitalZhejiang University School of MedicineHangzhou 310052China The Fourth Affiliated Hospital Zhejiang University School of MedicineYiwu 322000China Department of Orthopedics The Second Affiliated HospitalZhejiang University School of MedicineHangzhou 310009China China Orthopedic Regenerative Medicine Group(CORMed) Hangzhou 310058China

Dear Editor,Age-dependent adipose tissue malfunction raises the risk of diseases like diabetes,cardiovascular disease,and even cancer by contributing to metabolic decline,heterotopic fat storage,and chronic systemic inflammation.1 Understanding adipose tissue aging requires in-depth knowledge of the cellular and molecular properties of various adipose tissue cell types.Although the heterogeneity of the cell population during mouse aging has been studied,2 little is known about the cellular and molecular basis of human adipose tissues aging.

关键词： aging cardiovascular diseases

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Numerical investigation of pyrolysis effects on heat transfer characteristics and flow resistance of n-decane under supercritical pressure

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Chinese Journal of Aeronautics 2018年第6期31卷 1249-1257页

作者： Zhi TAO Xizhuo HU Jianqin ZHU hongwei wu National Key Laboratory of Science and Technology on Aero-thermodynamies School of Energy and Power EngineeringBeihang University Beijing 100083 China School of Engineering and Technology University of Hertfordshire Hatfield AL10 9AB United Kingdom

Pyrolysis of hydrocarbon fuel plays an important role in the regenerative cooling process. In this article, a Two-Dimensional（2D） numerical model is proposed to investigate the pyrolysis effects on the heat transfer characteristics and flow resistance of n-decane under supercritical pressure. The one-step global pyrolytic reaction mechanism consisting of 19 species is adopted to simulate the pyrolysis process of n-decane. The thermophysical and transport properties of the fluid mixture are computed and incorporated into the numerical model for simulation. Comparisons between the current predictions and the open published experimental data are carried out and good agreement is achieved. In order to better understand the complicated physicochemical process, further investigations on the turbulent flow and heat transfer coupled with pyrolysis in a tube have been performed under various operating conditions. The results indicate that the pyrolysis intensively takes place in the high fluid temperature region. The occurrence of the heat transfer deterioration would lead to increasing n-decane conversion at the beginning of the heated section. It is found that the pyrolysis could improve the heat transfer deterioration and promote the heat transfer enhancement. Meanwhile, pyrolysis gives rise to an abrupt increase of flow resistance. The mechanisms of the physicochemical phenomena are also analyzed in a systematic manner, which would be very helpful in the development of the regenerative cooling technology.

关键词： n-Decane Convective heat transfer Flow resistance Pyrolysis Supercritical pressure

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Experimental investigation on operating behaviors of loop heat pipe with thermoelectric cooler under acceleration conditions

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Chinese Journal of Aeronautics 2020年第3期33卷 852-860页

作者： Yongqi XIE Xinyu LI Sujun DONG Hongxing ZHANG hongwei wu School of Aeronautic Science and Engineering Beihang UniversityBeijing 100083China Beijing Key Laboratory of Space Thermal Control Technology China Academy of Space TechnologyBeijing 100094China School of Engineering and Computer Science University of HertfordshireHatfield AL109ABUnited Kingdom

An experimental study was carried out in this article to investigate the transient operating performance of a Dual Compensation Chamber Loop Heat Pipe(DCCLHP) with Thermoelectric Cooler(TEC) under acceleration conditions and ammonia was selected as the working fluid.For the purpose of comparison, experimental work was conducted under terrestrial gravity.Sensitivity analysis was performed to explore the effect of several control parameters such as the heat load, acceleration magnitude and TEC assist on the startup and operating performance of the DCCLHP.Experimental results indicate that the DCCLHP can get to a steady-state operation when the heat load changes from 25 W to 300 W under terrestrial gravity.While under acceleration conditions, the DCCLHP can work at a high operating temperature or even fail to operate, which shows the acceleration effect plays a significant impact on the loop operation.The TEC assist with power of 10 W can improve the operating performance and reduce the operating temperature for the case of small heat load and acceleration magnitude.When the acceleration exceeds 3 g at large heat load, the effect of TEC assist on the operation at large heat load can be ignored.

关键词： Acceleration Electronic cooling Loop heat pipe Operating performance Thermoelectric cooler

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Recent advances in functional oxides for high energy density sodium-ion batteries

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Materials Reports(Energy) 2021年第2期1卷 3-21页

作者： Hira Fatima Yijun Zhong hongwei wu Zongping Shao Western Australia School of Mines:Minerals Energy and Chemical Engineering(WASM-MECE)Curtin UniversityPerthWestern Australia6102Australia State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing211816PR China

The rapid development of power generation from renewable energy,such as geothermal,wind,and tidal energy,arises the need for efficient and economic electrochemical energy storage systems for integrating electric power smoothly into power grids.The lithium-ion battery has been successfully utilized for a variety of portable electronic devices but its application in large-scale energy storage has raised concerns about safety,availability of lithium resources,and its increasing price.Alternatively,sodium-ion battery(SIB)has been in acquisition predominantly,because of the abundant sodium resources over the earth’s crust at low cost.Developing high energy density electrode materials is one of the most intensive research topics.Oxides have been extensively investigated as the cathode and anode materials for high-performance and durable SIBs,owing to their various advantages including facile synthesis,versatile compositions,and easy structural tuning.In this review,we provide an in-time thorough summary of recent advances in oxide materials for cathodes and anodes for high energy density SIBs.The energy storage mechanism,challenges,categories,and optimizations of both electrodes are discussed.Existing research gaps and future perspectives are also outlined.This review is expected to accelerate the research for developing new pathways for tuning the properties of the oxide electrodes based on different sodium storage mechanisms.

关键词： Sodium-ion battery Oxide Cathode Anode High energy density

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Leakage performance of floating ring seal in cold/hot state for aero-engine

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Chinese Journal of Aeronautics 2019年第9期32卷 2085-2094页

作者： Guoqing LI Qian ZHANG Enliang HUANG Zhijun LEI hongwei wu Gang XU Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100190China Research Institute of Petroleum Exploration and Development Beijing 100083China School of Engineering and Technology University of HertfordshireHatfield AL109ABUnited Kingdom

Rotating experimental investigations were carried out to study the oil sealing capability of two different floating ring seals in cold/hot state for aero-engine. High-speed Floating Ring Seal(HFRS) is a seal with the inner diameter of 83.72 mm and maximum speed of 38000 r/min, and Low-speed Floating Ring Seal(LFRS) is another seal with the inner diameter of 40.01 mm and maximum speed of 18000 r/min. In hot state, sealing air with the temperature of 371 K and oil with the temperature of 343 K was employed to model the working conditions of an aero-engine. Comparisons between floating ring seal and labyrinth seal were done to inspect the leakage performance.More attention was paid to the critical pressure ratio where the oil leakage began. Results show that the critical pressure ratio in cold state is obviously larger than that in hot state for both seals. An underlying sealing mechanism for floating ring seal is clarified by the fluid film, which closely associates with the dimensionless parameter of clearance over rotating diameter(2 c/Dr). Another fantastic phenomenon is that the leakage coefficient in hot state, not the leakage magnitude, is unexpectedly larger than that in cold state. Overall, the leakage performance of the floating ring seal is better than the labyrinth seal.

关键词： Aero-engine Critical pressure ratio Floating ring seal Labyrinth seal Leakage Rotating

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Phytophthora Effectors Modulate Genome-wide Alternative Splicing of Host mRNAs to Reprogram Plant Immunity

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Molecular Plant 2020年第10期13卷 1470-1484页

作者： Jie Huang Xinyu Lu hongwei wu Yuchen Xie Qian Peng Lianfeng Gu Juyou wu Yuanchao Wang Anireddy SNReddy Suomeng Dong Department of Plant Pathology Nanjing Agricultural UniversityNanjing 210095China Basic Forestry and Proteomics Research Center College of ForestryFujian Agriculture and Forestry UniversityFuzhou 350002China State Key Laboratory of Crop Genetics and Germplasm Enhancement College of HorticultureNanjing Agricultural UniversityNanjing 210095China Colorado State University Program in Cell and Molecular BiologyFort CollinsCO 80523USA Key Laboratory of Integrated Management of Crop Diseases and Pests(Ministry of Education) Nanjing 210095China The Key Laboratory of Plant Immunity Nanjing Agricultural UniversityNanjing 210095China

Alternative splicing(AS)of pre-mRNAs increases transcriptome and proteome diversity,regulates gene expression through multiple mechanisms,and plays important roles in plant development and stress responses.However,the prevalence of genome-wide plant AS changes during infection and the mechanisms by which pathogens modulate AS remain poorly understood.Here,we examined the global AS changes in tomato leaves infected with Phytophthora infestans,the infamous Irish famine pathogen.We show that more than 2000 genes exhibiting significant changes in AS are not differentially expressed,indicating that AS is a distinct layer of transcriptome reprogramming during plant-pathogen interactions.Furthermore,our results show that P.infestans subverts host immunity by repressing the AS of positive regulators of plant immunity and promoting the AS of susceptibility factors.To study the underlying mechanism,we established a luminescence-based AS reporter system in Nicotiana benthamiana to screen pathogen effectors modulating plant AS.We identified nine splicing regulatory effectors(SREs)from 87 P.infestans effectors.Further studies revealed that SRE3 physically binds U1-70K to manipulate the plant AS machinery and subsequently modulates AS-mediated plant immunity.Our study not only unveils genome-wide plant AS reprogramming during infection but also establishes a novel AS screening tool to identify SREs from a wide range of plant pathogens,providing opportunities to understand the splicing regulatory mechanisms through which pathogens subvert plant immunity.

关键词： late blight Phytophthora infestans alternative splicing splicing regulatory effectors plant immunity tomato

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