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Development of a key-variable-based parallel HVAC energy predictive model

Building Simulation 2022年第7期15卷 1193-1208页

作者： Huajing Sha Peng Xu Chengchu Yan Ying Ji Kenan Zhou Feiran Chen Terminus(Shanghai)Information tech.ology co. LTDShanghai 200062China Deportment of Mechanical and energy Engineering Tongji UniversityShanghai 201804China Department of Urban construction Nanjing Tech UniversityNanjing 211816China Beijing Key Laboratory of Green Built Environment and energy Efficient tech.ology Beijing University of TechnologyBeijing00124China China Southern Power Grid Guangdong Foshan Power Supply Bureau GuangdongChina

Building heating,ventilation,and air conditioning(HVAC)systems consume large amounts of energy,and precise energy prediction is necessary for developing various energy-efficiency *** prediction using data-driven models has received increasing attention in recent ***,two types of driven models are used for building energy prediction:sequential and parallel predictive *** latter uses the historical energy of the target building as training data to predict future energy ***,for newly built buildings or buildings without historical data records,the energy can be estimated using the parallel model,which employs the energy data of similar buildings as training *** second predictive model is seldom studied because the model input feature is difficult to identify and ***,we propose a novel key-variable-based parallel HVAC energy predictive *** model has informative input features(including meteorological data,occupancy activity,and key variables representing building and system characteristics)and a simple architecture.A general key-variable screening toolkit which was more versatile and flexible than present parametric analysis tools was developed to facilitate the selection of key variables for the parallel HVAC energy predictive model.A case study is conducted to screen the key variables of hotel buildings in eastern China,based on which a parallel chiller energy predictive model is trained and *** average cross-test error measured in terms of the coefficient of variation of the root mean square error(CV-RMSE)and normalized mean bias error(NMBE)of the parallel chiller energy predictive model is approximately 16%and 8.3%,which is acceptable for energy prediction without using historical energy data of the target building.

关键词： HVAC energy prediction data-driven model sequential predictive model parallel predictive model key-variable screening sensitivity analysis

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A N/co co-doped three-dimensional porous carbon as cathode host for advanced lithium-selenium batteries

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稀有金属:英文版 2023年第8期42卷 2670-2678页

作者： Fei Gao Xiang-An Yue Xiang-Yu Xu Peng Xu Fan Zhang Hao-Sen Fan Zhou-Lu Wang Yu-Tong Wu Xiang Liu Yi Zhang School of energy Sciences and Engineering Nanjing Tech UniversityNanjing 211816China School of Materials Science and Engineering East China Jiaotong UniversityNanchang 330013China college of Materials Science and Metallurgy Engineering Guizhou UniversityGuiyang 550025China Key Laboratory of Advanced energy Materials Chemistry(Ministry of Education) Nankai UniversityTianjin 300071China

Selenium(Se)is a promising cathode material for lithium batteries due to its high volumetric energy density(2528 Wh·L^(-1)).However,its practical application is restricted by rapid capacity fading resulting from the shuttle effect and slow reaction ***,a N/co co-doped three-dimensional porous carbon(co-NC)is prepared and used as Se host for lithium-selenium batteries(LSeBs).co-NC displays a high specific surface area of1201 m^(2)·g^(-1)which benefits from N and co *** N and co not only enhance the electrical conductivity of porous carbon but also possess an adsorption effect on ***,Se/co-NC electrode exhibits excellent cycling performance(a stable specific capacity of 480 mAh·g^(-1)after 200 cycles at 1.0C with a much lowcapacity decay of 0.028%per cycle)and outstanding rate performance(a high specific capacity of 414 mAh·g^(-1)at5.0C).This work inspires highly stable Se cathode design for LSeBs.

关键词： Lithium-selenium batteries(LSeBs) Se host co-NC Electrical conductivity Cycling stability

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Preparation of hollow fiber membranes from mullite particles with aid of sintering additives

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Journal of Advanced Ceramics 2021年第1期10卷 78-87页

作者： Hua LIU Jinyun LIU Zhou HONG Shengxian WANG Xuechao GAO Xuehong GU State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNo.30 Puzhu Road(S)Nanjing 211816China nanjing Membrane Materials Industrial tech.ology Research Institute co. Ltd.No.1 Yuansi RoadPukou Economic Development ZoneNanjing 211808China

Porous mullite hollow fiber membranes were prepared with a combined phase-inversion and sintering method,using three sintering additives including yttrium stabilized zirconia(YSZ),small mullite particles(SMP),and titanium oxide(TiO2)to promote the particle *** results indicated that all the three additives could improve the sintering performance of mullite hollow fiber membranes due to the decrease in activation energy of mullite *** YSZ and T i02 could react with mullite grains to generate composite oxides(e.g.,ZrSi04 and Al2Ti05)during sintering,following a reaction-sintering ***,the newly generated ZrSiO4 was instable and further decomposed into monoclinic ZrO2 and SiO2 in the sintering *** decomposition could avoid excessive embedment of composite oxides among mullite grains which have negative impact on mechanical strength of mullite hollow ***,the doping of YSZ provided a better promotion effect on the sintering of mullite hollow fiber membranes,where the microstructural and mechanical properties are insensitive to the doping content and sintering temperatures,so it could be used as the candidate for the large-scale preparation of mullite hollow fibers.

关键词： mullite sintering additives hollow fiber membranes sintering behavior

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A novel catalyst of silicon cerium complex oxides for selective catalytic reduction of NO by NH_3

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Journal of Rare Earths 2010年第5期28卷 721-726页

作者：徐海涛沈岳松邵成华林福文祝社民丘泰 School of energy & Environment Southeast University college of Materials Science and Engineering Nanjing University of Technology

A series of CeO2/SiO2 and SixCe1–xO2 complex oxides supported on an activated Al2TiO5-TiO2-SiO2 complex phase (ATS) ceramics were prepared by step impregnation and co-impregnation methods, and characterized by N2-BET, XRD, SEM and NH3-TPD tech.iques. The effects of reaction temperature, CeO2/SiO2 loadings and Si/Ce molar ratio on the granular catalysts for NO selective catalytic reduction with ammonia (NH3-SCR) were studied. Results indicated that both CeO2/SiO2/ATS and CeO2/ATS catalysts showed the same ac...

关键词： silicon cerium complex oxides selective catalytic reduction deNOx synergetic catalysis rare earths

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Optimization and simultaneous heat integration design of a coal-based ethylene glycol refining process by a parallel differential evolution algorithm

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化学科学与工程前沿:英文版 2023年第9期17卷 1280-1288页

作者： Jiahao Wang Hao Lyu Daoyan Liu Chengtian Cui Jinsheng Sun School of Chemical Engineering and tech.ology Tianjin UniversityTianjin300072China Institute of Intelligent Manufacturing Nanjing Tech UniversityNanjing211816China

coal to ethylene glycol still lacks algorithm optimization achievements for distillation sequencing due to high-dimension and strong nonconvexity characteristics,although there are numerous reports on horizontal comparisons and process *** scenario triggers the navigation in this paper into the simultaneous optimization of parameters and heat integration of the coal to ethylene glycol distillation scheme and double-effect superstructure by the self-adapting dynamic differential evolution *** mitigate the influence of the strong nonconvexity,a redistribution strategy is adopted that forcibly expands the population search domain by exerting external influence and then shrinks it again to judge the global optimal *** two redistributive operations under the parallel framework,the total annual cost and co_(2) emissions are 0.61%/1.85%better for the optimized process and 3.74%/14.84%better for the superstructure than the sequential ***,the thermodynamic efficiency of sequential optimization is 11.63%and 10.34%higher than that of simultaneous *** study discloses the unexpected great energy-saving potential for the coal to ethylene glycol process that has long been unknown,as well as the strong ability of the self-adapting dynamic differential evolution algorithm to optimize processes described by the high-dimensional mathematical model.

关键词： ethylene glycol redistribution heat integration optimization parallel framework

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Ultrathin Zn-free anode based on Ti_(3)C_(2)T_(x) and nanocellulose enabling high-durability aqueous hybrid Zn-Na battery with Zn2+/Na+co-intercalation mechanism

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Nano Research 2023年第1期16卷 536-544页

作者： Hao Chen Weijun Zhou Minfeng Chen Qinghua Tian Xiang Han Jizhang Chen college of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037China Key Laboratory of Surface&Interface Science of Polymer Materials of Zhejiang Province Department of ChemistryZhejiang Sci-Tech UniversityHangzhou 310018China co-Innovation Center of Efficient Processing and Utilization of Forest Resources Nanjing Forestry UniversityNanjing 210037China

With low cost and high safety,aqueous zinc-based batteries have received considerable ***,the excess utilization of zinc metal in the anodes of these batteries reduces energy density and increases ***,an ultrathin electrode of approximately 6.2μm thick is constructed by coating Ti_(3)C_(2)T_(x)/nanocellulose hybrid onto a stainless steel *** electrode is used as the Zn-free anode for aqueous hybrid Zn-Na battery,in which,a concentrated electrolyte is used to improve electrochemical *** Ti_(3)C_(2)T_(x)/nanocellulose coating is found to improve the electrolyte wettability,facilitate desolvation process of hydrated Zn^(2+) ions,lower nucleation overpotential,improve zinc plating kinetics,guide horizontal zinc plating along the Zn(002)facet,and inhibit parasitic side *** is also found that the Na_(3)V_(2)(PO_(4))_(3) cathode material adopts a highly reversible Zn^(2+)/Na^(+)co-intercalation charge storage mechanism in this *** to these benefits,the assembled hybrid Zn-Na battery exhibits excellent rate capability,superior cyclability,and good anti-freezing *** work provides a new concept of electrode design for electrochemical energy storage.

关键词： MXene-based composites ultrathin electrodes electrode surface coatings aqueous hybrid batteries co-intercalation charge storage mechanisms

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Four unprecedented V_(14)clusters as highly efficient heterogeneous catalyst for co_(2)fixation with epoxides and oxidation of sulfides

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Science China Chemistry 2023年第1期66卷 107-116页

作者： Ji-Lei Wang Jia-Peng Cao Yin-Hua Zhu Qin Wang Ning-Fang Li Xin-Rong Fan Hua Mei Yan Xu State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing210009China State Key Laboratory of coordination Chemistry Coordination Chemistry InstituteNanjing UniversityNanjing 210093China

Chemical fixation of carbon dioxide(co_(2))is an energy-saving method for alleviating the greenhouse gas emissions,whereas it persists a challenge posed by the demand for efficient ***,four unprecedented examples of tetradecanuclear vanadium clusters,namely,[(C_(2)H_(8)N_(2))6(CH_(3)O)8(CH_(3)OH)_(2)V_(10)^(Ⅳ)V_(4)ⅤO_(26)](V_(14)-1),[(C_(3)H_(10)N_(2))_(6)(CH_(3)O)_(8)(CH_(3)OH)_(2)V_(10)^(Ⅳ)V_(4)ⅤO_(26)](V14^(-2)),[(C_(6)H_(14)N_(2))6(CH_(3)O)8(CH_(3)OH)_(2)V_(10)^(Ⅳ)V_(4)ⅤO_(26)]·5H_(2)O(V14^(-3))and[(C_(4)H_(12)N_(2)O)_(4)(C_(4)H_(11)N_(2)O)_(2)(CH_(3)O)_(2)V_(10)^(Ⅳ)V_(4)ⅤO_(28)]·6H_(2)O(V_(14)-4),have been triumphantly designed and constructed under solvothermal *** them,compounds V_(14)-1–4 are the first cases of tetradecanuclear vanadium clusters without the introduction of inorganic acid radical *** main units[V_(10)^(Ⅳ)V_(4)ⅤO_(26)]8+and[V10ⅣV4ⅤO28]4+represent brand-new configurations of tetradecanuclear vanadium *** the fact that the presence of V^(Ⅳ)/V^(Ⅴ)can potentially facilitate electron transfer and consequently expedite catalytic reactions,we explored the catalytic activities of these ***,V_(14)-1 was further used as a heterogeneous catalyst in the co_(2)fixation into cyclic carbonates under milder conditions(60℃,0.5 MPa)and exhibited higher catalytic ***,the experimental results indicated that V_(14)-1 could efficiently catalyze the sulfoxidation,which could fully convert most sulfides within 40 min at room ***,as a stable heterogeneous catalyst employed in co_(2)fixation with epoxides and oxidation of sulfides,V_(14)-1 could be consecutively used multiple cycles without losing its catalytic activity.

关键词： V_(14)clusters heterogeneous catalyst co_(2)fixation oxidation of sulfides

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Effect of Doped Alkali Metal Ions on the SO_(2) Capture Performance of MnO_(2) Desulfurization Materials at Low Temperature

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Journal of Renewable Materials 2021年第9期9卷 1541-1553页

作者： Xing Li Yugo Osaka Hongyu Huang Takuya Tsujiguchi Akio Kodama Guangzhou Institute of energy conversion Chinese Academy of ScienceGuangzhou510640China School of Mechanical Engineering College of Science and EngineeringKanazawa UniversityKanazawa9201192Japan School of Mechanical and Power Engineering Nanjing Tech UniversityNanjing211800China

Sulfur dioxide(SO_(2))emissions from diesel exhaust pose a serious threat to the environment and human ***,desulfurization tech.ology and the performance of desulfurization materials must be *** this study,MnO_(2) was modified with various alkali metal ions using the impregnation method to enhance its SO_(2) capture *** composites were characterized intensively by scanning electron microscopy,energydispersive X-ray spectroscopy,X-ray diffraction spectroscopy,and Brunauer-Emmett-Teller *** SO_(2) capture performance of these composites were measured via thermogravimetry,and the effect of doping with alkali metal ions on the SO_(2) capture performance of MnO_(2) was *** showed that the SO_(2) capture performance of MnO_(2) could be enhanced by doping with alkali metal ions,and the MnO_(2) composite doped with LiOH(2.0 mol/L)had the best SO_(2) capture capacity(124 mgSO_(2)/gMaterial),which was 18%higher than that of pure MnO_(2).Moreover,the type and concentration of alkali metal ions had varying effects on the SO_(2) capture performance of MnO_(2).In our experiment,the SO_(2) capture performance of the MnO_(2) doped with NaOH,LiCl,Na2co3,K2co3,and Li2co3 composites were worse than that of pure MnO_(2).Therefore,the influences of the type and concentration of alkali metal ions to be doped into desulfurization materials must be considered comprehensively.

关键词： Sulfur dioxide capture desulfurization materials manganese dioxide alkali metal ions doped

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Artificial solid electrolyte interface layer based on sodium titanate hollow microspheres assembled by nanotubes to stabilize zinc metal electrodes

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Journal of energy Chemistry 2022年第8期31卷 539-546,I0015页

作者： Minfeng Chen Weijun Zhou Qinghua Tian Xiang Han Yanjun Tan Jizhang Chen Ching-Ping Wong co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037JiangsuChina Department of Chemistry School of SciencesZhejiang Sci-Tech UniversityHangzhou 310018ZhejiangChina nanjing Sanle Group co. Ltd.Nanjing 211800JiangsuChina School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

Recently,aqueous zinc-ion batteries with intrinsic safety,low cost,and environmental benignity have attracted tremendous research ***,zinc dendrites,harmful side reactions,and zinc metal corrosion stand in the ***,we use lepidocrocite-type sodium titanate hollow microspheres assembled by nanotubes to constitute an artificial solid electrolyte interface layer on the zinc metal *** to the hierarchical structure with abundant open voids,negative-charged layered framework,low hydrophilicity,electrically insulting nature,and large ionic conductivity,the sodium titanate coating layer can effectively homogenize the electric field,promote the Zn^(2+)ion transfer,guide the Zn^(2+)ion flux,reduce the desolvation barrier,improve the exchange current density,and accommodate the plated zinc ***,this coating layer can effectively suppress zinc dendrites and other unfavorable *** this coating layer,the Zn//Zn symmetric cell is able to provide an impressive cumulative zinc plating capacity of 1375 m Ah cm^(-2) at a current density of 5 m A cm^(-2).This coating layer also contributes to significantly improved electrochemical performances of Zn//MnO_(2) battery and zincion hybrid *** work offers new insights into the modifications of zinc metal electrodes.

关键词： Artificial SEI layers Hierarchical sodium titanates Interfacial stability Dendrite inhibition Aqueous Zn-ion batteries

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Recent Development of Cardanol Based Polymer Materials-A Review

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Journal of Renewable Materials 2019年第7期7卷 601-619页

作者： Puyou Jia Fei Song Qiaoguang Li Haoyu Xia Mei Li Xugang Shu Yonghong Zhou Institute of Chemical Industry of Forest Products Chinese Academy of Forestry(CAF)/Key Lab.of Biomass Energy and Material/Co-Innovation Center of Efficient Processing and Utilization of Forest ResourcesNanjing Forestry University/Key and Open Laboratory of Forest Chemical EngineeringSFA/National Engineering Laboratory for Biomass Chemical UtilizationNanjingChina School of Chemistry and Chemical Engineering Zhongkai University of Agriculture and EngineeringGuangzhouChina college of Chemical Engineering Nanjing Tech UniversityNanjingChina

Polymers from renewable resources are receiving tremendous attention due to the increasing concerns on the depletion of fossil oils and deteriorated ***,as an abundant and renewable chemical raw material,has been widely used for the production of renewable polymer materials via converting into various of chemical monomers with active functional *** comprehensive review deals with various aspects of cardanol as a starting material the preparing various polymer and polymer composites such as benzoxazine resins,phenolic resin,polyurethanes,epoxy resin,vinyl ester polymers,polyamide and cyanate ester *** assessment of the future prospects for the use of cardanol to synthesise novel and valuable renewable materials is presented.

关键词： Cardanol sustainable synthesis platform chemical epoxy resin polyurethane

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