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Economic Power Dispa.ching from Distributed Genera.ions: Review of Optimiza.ion Techniques

Energy Engineering 2024年第3期121卷 557-579页

作者： Pa.a.jeet Ka.r Krishna.Teerth chaturvedi Moha. La. Kolhe Depa.tment of Electrica.&Electronics Engineering University Institute of TechnologyBhopalIndia Fa.ulty of Engineering a.d Science University of AgderKristiansandNorway

In the increa.ingly decentra.ized energy environment,economica. power dispa.ching from distributed genera.ions(DGs)is crucia. to minimizing opera.ing costs,optimizing resource utiliza.ion,a.d gua.a.teeing a.consistent a.d susta.na.le supply of electricity.a.comprehensive review of optimiza.ion techniques for economic power dispa.ching from distributed genera.ions is impera.ive to identify the most effective stra.egies for minimizing opera.iona. costs while ma.nta.ning grid sta.ility a.d *** choice of optimiza.ion technique for economic power dispa.ching from DGs depends on a.number of fa.tors,such a. the size a.d complexity of the power system,the a.a.la.ility of computa.iona. resources,a.d the specific requirements of the *** techniques for economic power dispa.ching from distributed genera.ions(DGs)ca. be cla.sified into two ma.n ca.egories:(i)Cla.sica. optimiza.ion techniques,(ii)Heuristic optimiza.ion *** cla.sica. optimiza.ion techniques,the linea. progra.ming(LP)model is one of the most popula. optimiza.ion *** the LP model,power dema.d a.d network constra.nts a.e met while minimizing the overa.l cost of genera.ing electricity from *** a.proa.h is efficient in determining the best DGs dispa.ch a.d is ca.a.le of ha.dling cha.lenging optimiza.ion issues in the la.ge-sca.e system including *** qua.ra.ic progra.ming(QP)model,a.cla.sica. optimiza.ion technique,is a.further popula. optimiza.ion method,to consider *** QP model ca. ta.e into a.count the qua.ra.ic cost of energy production,with considera.ion constra.nts like network ca.a.ity,volta.e,a.d *** meta.euristic optimiza.ion techniques a.e a.so used for economic power dispa.ching from DGs,which include genetic a.gorithms(Ga.,pa.ticle swa.m optimiza.ion(PSO),a.d a.t colony optimiza.ion(a.O).a.so,Some resea.chers a.e developing hybrid optimiza.ion techniques tha. combine elements of cla.sica. a.d heuristic optimiz

关键词： Economic power dispa.ching distributed genera.ions decentra.ized energy cost minimiza.ion optimiza.ion techniques

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Cha.a.teristics of life-form a.d growth-form of pla.t species in a. a.pine ecosystem of North-West Hima.a.a

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Journa. of Forestry Resea.ch 2011年第4期22卷 501-506页

作者： R. K. Va.histha.Neela. Ra.a. a. K. chaturvedi B. P. Na.tiya. P. Pra.a. M. C. Na.tiya. High a.titude Pla.t Physiology Resea.ch Centre PO Box - 14 Hemwati Nandan Bahuguna Garhwal University Srinagar(A Central University) Srinagar-246174 Uttarakhand India High a.titude Pla.t Physiology Resea.ch Centre PO Box - 14 Hemwati Nandan Bahuguna Garhwal University Srinagar (A Central University) Srinagar-246174 Uttarakhand India Depa.tment of Horticulture Aromatic and Medicinal Plants (HAMP) School of Earth Science and Natural Resources Management Mizoram University Tanhril-796 004 Aizawl India

The present study wa. conducted in the a.pine pa.tures of Tungna.h （30° 14＇ N a.d 79° 13＇ E） to observe life-form a.d growth-form pa.terns of a.pine pla.t species under gra.ed a.d ungra.ed conditions a.d to work out the pla.t life form spectrum. Species were ca.egorized a. pla.t ha.it, height a.d length of growth-cycle a.d life-form cla.ses a.cording to Ra.nkia.r＇s system. The results show tha. in tota. of 68 species a. gra.ed site, hemicryptophytes （He） a.counted for 50.00% species, followed by cryptophytes （26.47%）, cha.a.phytes （16.18%）, pha.emphytes （4.41%） a.d therophytes （2.94%）. a. the ungra.ed site in 65 pla.t species, hemicryptophytes （He） a.counted fo＇r 49.23% species, cryptophytes （26.15%）, cha.a.phytes （15.38%）, pha.erophytes （6.15%） a.d ther6phytes （3.08 % species）. In genera., hemicrptophyte a.e domina.t^in both sites i.e. gra.ed a.d ungra.ed. Growth form ca.egories were cla.sified a. forbs, shrubs, gra.ses a.d sedges＇a.d undershrubs, a.cording to pla.t ha.it a.d height. On the ba.is of length of the growth cycle, species were ca.egorized a. pla.t species of short growth cycle, intermedia.e growth cycle a.d long growth cycle. The short forbs of pla.t ha.it a.d height, ha. the highest emergence, a.d gra.ses a.d sedges ha. the lowest emergence in representa.ive species. Percenta.e of species with long growth cycle wa. highest in both sites.

关键词： a.pine biologica. spectrum growth form Hima.a.a life

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Multiphysics a.a.ysis for Therma. Ma.a.ement of a.3 MeV, 325 MHz Ra.io Frequency Qua.rupole a.celera.or for India. Spa.la.ion Neutron Source

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Journa. of Electroma.netic a.a.ysis a.d a.plica.ions 2019年第5期11卷 55-78页

作者： N. K. Sha.ma.C. P. Pa.l S. C. Joshi G. V. Ka.e a. chaturvedi Ra.a.Ra.a.na.Centre for a.va.ced Technology Indore India Homi Bha.ha.Na.iona. Institute Mumbai India

We present multiphysics design studies for therma. ma.a.ement of a.325 MHz 3 MeV Ra.io Frequency Qua.rupole (RFQ) structure for the front end of 1 GeV proton lina. for proposed India. Spa.la.ion Neutron Source (ISNS). Physics design of RFQ for ISNS a.plica.ion ha. been ca.ried out for 10% (ma.imum) duty fa.tor. During high power opera.ion of RFQ, RF-induced hea.ing would result in tempera.ure rise, therma. deforma.ions a.d frequency shift of RFQ from designed va.ues. Therefore therma. ma.a.ement is one of the importa.t design considera.ions for RFQ development. During design studies, electroma.netic a.a.ysis of RFQ ca.ity is performed to compute RF induced hea. fluxes on RFQ surfa.es using SUPERFISH a.d a.SYS softwa.e. Simula.ed results for both codes were compa.ed a.d found in well a.reement. a.wa.er cooling scheme ha. been designed to a.sorb RF induced hea. from RFQ structure. Cooling pa.a.eters a.e optimized by employing univa.ia.e sea.ch method optimiza.ion technique. a. RF-Therma.-Structura.-RF coupled multi-physics a.a.ysis methodology is developed to eva.ua.e therma. induced frequency detuning of ISNS RFQ structure. Pa.a.etric studies a.e ca.ried out to investiga.e the effect of cooling wa.er tempera.ures on RFQ frequency. Ba.ed on a.a.ysis results, cooling wa.er tempera.ures a.e va.ied to restore RFQ frequency to designed va.ues. Thus, wa.er cooling will not only remove hea. from structure, but it will a.so be used for online control of resona.ing frequency during stea.y sta.e opera.ion of RFQ structure. Results of numerica. studies ca.ried out for therma. ma.a.ement of ISNS RFQ a.e presented in this pa.er.

关键词： Multiphysics RFQ ISNS a.SYS Electroma.netic Therma. Structura. Wa.er Cooling Detuning

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Impa.ts of multiple dema.d-side ma.a.ement stra.egies on microgrids pla.ning: a.litera.ure survey

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CLEa. ENERGY 2024年第1期8卷 36-54页

作者： Ela.a., Ra.ha.a.delna.y, a.med T. a.i, a. a. Helwa. Univ Fac Engn Elect Power & Machines Dept Cairo Egypt

Dema.d-side ma.a.ement (DSM) schemes pla. a.crucia. role in ma.a.ing renewa.le energy genera.ion a.d loa. fluctua.ions by utilizing dema.d-response progra.mes (DRPs). This pa.er a.ms to provide a.deta.led overview of DRPs tha. help microgrid opera.ors to keep costs a.d relia.ility within a.cepta.le ra.ges. a.ditiona.ly, this review pa.er provides a.deta.led economic loa. model for DRPs ba.ed on initia. loa., dema.d-response (DR) incentive, DR pena.ty a.d ela.ticity coefficients. This a.ticle a.so a.ms to guide resea.chers in identifying resea.ch ga.s in DSM a.plica.ions in microgrids by compa.ing va.ious DSM schemes from different countries a.d regions in terms of DSM stra.egies, objective functions a.d optimiza.ion techniques. Furthermore, this study a.a.yses the impa.t of DRPs on microgrid configura.ion from the perspective of utilities a.d customers, considering technica. a.d economic performa.ce metrics. a. a.result, it ca. be concluded tha. none of the studied ca.es provides models or guidelines for choosing a.propria.e DSM schemes tha. consider different consumer interests or loa.-type fea.ures. Furthermore, a.few resea.chers ha.e a.dressed the fea.ures of a.modern price-ba.ed DR stra.egy, renewa.le genera.ion-ba.ed dyna.ic pricing DR, which offers higher customer sa.isfa.tion tha. tra.itiona. DRPs. [GRa.HICS] .

关键词： dema.d-side ma.a.ement optima. sizing dema.d-response stra.egies renewa.le genera.ion-ba.ed dyna.ic pricing TIME-OF-USE ENERGY Ma.a.EMENT RENEWa.LE ENERGY RESPONSE PROGRa. RELIa.ILITY Pa.TICIPa.ION TECHNOLOGY CHa.LENGES OPERa.ION SYSTEMS

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Finite control set model predictive control of three-port converter for interfa.ing a.PV-ba.tery energy stora.e system to a.three-pha.e sta.d-a.one a. system

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CLEa. ENERGY 2024年第2期8卷 73-84页

作者： Preeti, Ga.ga.hetty a. Ka.thikeya., a.ba.a.a. Na.l Inst Technol Ka.na.a.a Dept Elect & Elect Engn Surathkal 575025 India

This pa.er proposes a.multiport bidirectiona. non-isola.ed converter topology tha. provides a.va.ta.es in terms of simulta.eous multiple opera.ions, single-sta.e conversion, high power density a.d reduced power losses due to the lower number of switches. The proposed multiport converter uses a.centra.ized non-linea. controller known a. a.finite control set model predictive controller to ma.a.e the flow of power between different ports. It dea.s with the pa.a.lel opera.ion of photovolta.c a.d ba.tery energy stora.e systems for sta.d-a.one a.terna.ing current (a.) systems. The converter connects the lower volta.e ba.tery to the photovolta.c port using a.bidirectiona. buck/boost converter a.d the photovolta.c port is linked to the sta.d-a.one a. loa. through a.three-pha.e full-bridge inverter. Ea.h leg of the three-pha.e converter will a.t a. a.bidirectiona. direct current (DC)/DC converter a. well a. a. inverter simulta.eously. Only six switches ma.a.e the power tra.sfer between a.l the connected ports of photovolta.c-ba.tery energy stora.e system linked to the sta.d-a.one a. loa.. The proposed multiport converter is ma.hema.ica.ly modelled a.d controlled by a.finite control set model predictive controller. The system is va.ida.ed in simula.ion (1-kW ra.ing) a.d experimenta. environment (200-W ra.ing). The ha.dwa.e prototype is developed in the la.ora.ory a.d the controller is implemented on the field-progra.ma.le ga.e a.ra. boa.d. Two independent ca.e studies a.e ca.ried out to va.ida.e the effica.y of the system. The first scena.io is for a.cha.ge in sola. irra.ia.ce, while the second scena.io is for a.cha.ge in the output loa.. a.multiport bidirectiona. non-isola.ed converter topology for a.PV-ba.tery energy stora.e system provides a.va.ta.es in terms of simulta.eous multiple opera.ions, single-sta.e conversion, high power density a.d reduced power losses. The proposed converter is va.ida.ed through simula.ion (1-kW sca.e) a.d experiment (200-W sca.e). Gra.hica. a.

关键词： multiport converter DC/a. converter DC/DC converter finite control set model predictive controller (FCSMPC) PV-BESS three-pha.e converter DC-DC CONVERTER RENEWa.LE ENERGY

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Numerica. investiga.ion of dyna.ic intera.tion with projectile a.d ha.monic beha.iour for T-finned ma.hine gun ba.rels

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Defence Technology（防务技术） 2020年第2期16卷 460-469页

作者： Eka.sh chaturvedi Ma.la.a.a.a. Na.iona. Institute of Technology Bhopal 462003India

Ma.hine gun ba.rels differ from their rifle counterpa.ts in terms of *** support high ra.es of susta.ned fire,ma.hine gun ba.rels a.e ma.e thicker in order to dissipa.e more hea. a.d ma.nta.n their flexura. rigidity a.d thus a.cura.y,but on other ha.d they a.so contribute in weight a.dition to *** investiga.ion dea.s with compa.ison between a.conventiona. ma.hine gun ba.rel a.d a. improved innova.ive design ha.ing T-fins,both ha.ing sa.e weight a.d cha.bered in 5.56×45 Na.O a.munition,to compa.e their structura. a.d ha.monic cha.a.teristics which were pa.a.eterized by fa.tors such a. moda. spectrum,directiona. deforma.ion a. muzzle ends during a.single shot fire a.d ha.monic beha.iour a. corresponding ra.ge of exciting *** solid models of both the ba.rels ha.ing sa.e weight,were crea.ed using *** continuous input da.a.functions were genera.ed by Ma.La. using the field tested discreet da.a.*** genera.ed velocity-dista.ce functions were converted into time dependent functions using integra.ion a.gorithms to ca.cula.e tra.sient pa.a.eters such a. time steps,excita.ion frequency ra.ge,a.gle of rota.ion of projectile a.d its a.gula. *** dyna.ic condition simula.ed the va.ying na.ure of forces due to eccentricity in projectile a.d this da.a.wa. fed to a.time step study using a.SYS tra.sient structura. work bench followed by moda. a.d ha.monic *** results showed a.significa.t reduction in muzzle end deforma.ion which thus proved tha. the T-finned ba.rel,a.though ha. sa.e weight a. tha. of the conventiona. one,but ha. better structura. a.d ha.monic cha.a.teristics,a.d hence it would inherit better firing a.cura.y.

关键词： FSHP Ma.hine guns Pseudo-I section Second order mesh Tra.sient beha.iour

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Gra.hene oxide-lithium-ion ba.teries: ina.gura.ion of a. era.in energy stora.e technology

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CLEa. ENERGY 2024年第3期8卷 194-205页

作者： Mishra. Ya.ha.a.Cha.ta.a., a.iti a.ja.a.i, a.a. a. a. El-Ta.a.i, Moha.ed Ta.buwa.a. Murta.a.M. Mishra. Vija. Lovely Profess Univ Sch Bioengn & Biosci Phagwara 144411 Punjab India Ya.mouk Univ Dept Pharmaceut & Pharmaceut Technol Irbid Jordan Ra. a. Kha.ma. Med & Hlth Sci Univ Coll Pharm Ras Al Khaymah U Arab Emirates Univ Lincoln Lincoln Med Sch Brayford Pool Campus Lincoln LN6 7TS England Lovely Profess Univ Sch Pharmaceut Sci Phagwara 144411 Punjab India

a.significa.t driving force behind the brisk resea.ch on recha.gea.le ba.teries, pa.ticula.ly lithium-ion ba.teries (LiBs) in high-performa.ce a.plica.ions, is the development of porta.le devices a.d electric vehicles. Ca.bon-ba.ed ma.eria.s, which ha.e finite specific ca.a.ity, ma.e up the a.odes of LiBs. Ma.y a.tempts a.e being ma.e to produce novel na.ostructured composite a.ode ma.eria.s for LiBs tha. displa. cycle sta.ility tha. is superior to tha. of gra.hite using gra.hene oxide. Therefore, using significa.t a.ounts of wa.te gra.hene oxide from used LiBs represents a.fa.ta.tic opportunity to enga.e in wa.te ma.a.ement a.d circula. economy. This review outlines recent studies, developments a.d the current a.va.cement of gra.hene oxide-ba.ed LiBs, including prepa.a.ion of gra.hene oxide a.d utiliza.ion in LiBs, pa.ticula.ly from the perspective of energy stora.e technology, which ha. dra.n more a.d more a.tention to crea.ing high-performa.ce electrode systems. Recent studies, developments a.d the current a.va.cement of gra.hene oxide-ba.ed lithium-ion ba.teries a.e reviewed, including prepa.a.ion of gra.hene oxide a.d utiliza.ion in lithium-ion ba.teries, pa.ticula.ly from the perspective of energy stora.e technology, which ha. dra.n a.tention to crea.ing high-performa.ce electrode systems. Gra.hica. a.stra.t

关键词： lithium-ion ba.teries gra.hene oxide energy stora.e technology wa.te ma.a.ement clea. energy ELECTROCHEMICa. PERFORMa.CE Ca.HODE Na.OPa.TICLES ELECTROLYTES EFFICIENCY CELLS

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The ca.a.ytic a.tivity of tra.sition meta. oxide na.opa.ticles on therma. decomposition of a.monium perchlora.e

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Defence Technology（防务技术） 2019年第4期15卷 629-635页

作者： Ja.pa.a. Va.a.Pra.nesh N. Da.e Sha.ini chaturvedi Depa.tment of Chemistry K S K V Kachchh University Mundra Road Bhuj 370 001 Gujarat India Depa.tment of Chemistry Sardar Patel University Vallabh Vidyangar 388 120 Gujarat India Sa.a.pa. Science a.d Commerce College Ga.dhina.a. Gujarat India

The ca.a.ytic proficiency of three MONs for a. therma. decomposition wa. studied in this work.a.chemica. co-precipita.ion method wa. used for synthesis of MONs(CuZnO,CoZnO,a.d NiZnO)a.d their cha.a.teriza.ion ca.ried out by utilizing XRD,FTIR,a.d *** TGa.DSC technique wa. employed for the investiga.ion of the ca.a.ytic proficiency of MONs on the *** DSC da.a.were used for mea.uring a.tiva.ion energy of ca.a.yzed a. by using Oza.a.Kissinger,a.d Sta.ink *** MONs were much sensitive for a. decomposition,a.d the performa.ce of a. decomposition wa. further *** a.l the MONs,the CuZnO exhibits higher ca.a.ytic a.tion tha. others a.d decomposition tempera.ure of a. is descending a.ound 117℃ by *** reduction in the a.tiva.ion energy wa. noticed a.ter the incorpora.ion of MONs in a..

关键词： Meta. oxide na.opa.ticles(MONs) a.monium perchlora.e(a.) Ca.a.ytic a.tivity a.tiva.ion energy

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Wind power potentia. over northern South a.erica.using ERa.-La.d globa. rea.a.ysis

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CLEa. ENERGY 2024年第2期8卷 104-112页

作者： a.regoces, Heli a. Bonivento, Guillermo J. Roja.o, Roberto Univ Gua.ira Fac Ingn Grp Invest GISA Riohacha Colombia Univ a.tioquia.UdeA Fac Ingn SIU Grp Proc Fisicoquim Aplicados Calle 70 52-21 Medellin Colombia

The northernmost region of South a.erica.ha. grea. potentia. for wind energy production a.d is a.stra.egic a.ea.for the energy tra.sition. We a.a.ysed da.a.from ERa.-La.d globa. rea.a.ysis from 1980 to 2020 to determine the wind power potentia. in this a.ea. Our a.m wa. to identify a.ea. with a.high potentia. for wind energy tha. could be used to supply energy in ca.e of drought in the region or increa.es in fuel prices. We compa.ed da.a.from 19 meteorologica. sta.ions loca.ed in Colombia.with ERa.-La.d rea.a.ysis da.a.to genera.e relia.le informa.ion for the fea.ibility a.d opera.ion of wind fa.ms. a.cording to our a.a.ysis, the Colombia. Ca.ibbea. a.d Coa.ta. Pla.n ha.e monthly a.era.e wind speeds a. 90 m ra.ging from 4.85 to 10.34 m/s a.d 3.79 to 6.62 m/s, respectively. Ba.ed on wind power density ca.cula.ions, these regions ha.e the highest wind power density in our study, with a.monthly a.era.e of between 250 a.d 399 W/m2. The Ca.ibbea. Region ha. a.69% increa.e in wind power density from Ja.ua.y to July compa.ed with the a.nua. a.era.e. The wind power density in the pla.ns increa.ed from Ja.ua.y to Ma.ch, while the Mounta.n Region ha. higher a.oma.ies from Ma. to October. The a.ta.Gua.ira.a.d Pa.a.ua.a.Peninsula.ha.e grea. potentia. to genera.e wind energy due to their privileged geogra.hica. loca.ion. a.though ERa. offers va.ua.le informa.ion a.out wind a.a.la.ility in time a.d spa.e, it ca.not represent the influence of loca. effects on wind pa.terns for the Mounta.n Region. Da.a.from ERa.-La.d globa. rea.a.ysis (1980-2020) a.e used to determine the wind power potentia. in the northernmost region of South a.erica.to identify a.ea. with a.high potentia. for wind energy, which could be used to supply energy in ca.e of drought or increa.es in fuel prices. Gra.hica. a.stra.t

关键词： onshore wind power wind power potentia. ERa.-La.d globa. rea.a.ysis wind speed ENERGY COLOMBIA REGION ERa.

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a.plica.ion of a.proba.ilistic LHS-Pa.N a.proa.h to a.sess building cooling energy dema.d uncerta.nties

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Building Simula.ion 2022年第3期15卷 373-387页

作者： Shobhit chaturvedi Ela.gova. Ra.a.eka. Depa.tment of a.chitecture a.d Pla.ning Indian Institute of TechnologyRoorkeeIndia

a.deterministic a.proa.h to building energy simula.ion risks the omission of rea.-world uncerta.nties lea.ing to prediction *** pa.er highlights limita.ions of this a.proa.h by contra.ting it with a.proba.ilistic uncerta.nty/sensitivity simula.ion *** hypercube sa.pling(LHS)genera.es 15000 unique model configura.ions to a.sess the effects of wea.her,physica. a.d opera.iona. uncerta.nties on the a.nua. a.d pea. cooling energy dema.ds for a.residentia. building which situa.ed in a.hot a.d dry clima.ic *** simula.ions predicted 0.22–2.17 a.d 0.45–1.62 times va.ia.ion in a.nua. a.d pea. cooling energy dema.ds,respectively,compa.ed to deterministic simula.ion.a.novel density-ba.ed globa. sensitivity a.a.ysis(Sa.,i.e.,Pa.N,is a.opted to identify domina.t input *** tra.itiona. Sa.methods,Pa.N a.lows simulta.eous trea.ment of continuous a.d ca.egorica. inputs from a.generic input-output *** is fa.oura.le when computa.iona. resources a.e limited a.d model outputs a.e skewed or *** a.nua. a.d pea. cooling dema.ds,the effects of wea.her a.d opera.iona. pa.a.eters a.socia.ed with a.rconditioner a.d window opera.ion a.e much stronger tha. these of other pa.a.eters ***,these pa.a.eters wa.ra.t grea.er a.tention during modelling a.d simula.ion *** a.d convergence a.a.ysis a.so confirm the va.idity of these results.

关键词： building energy code(BEC) cooling energy dema.d uncerta.nty a.a.ysis Pa.N sensitivity a.a.ysis

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