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Therma. Power Pla.t with 1 GW Ca.a.ity for Meeting Future Na.iona. Electric Dema.ds

Journa. of Power a.d Energy Engineering 2022年第8期10卷 1-11页

作者： Osa.a.a. marzouk a.med a. a.ma. Ma.wa. M. a. Sa.di a.med S. a.-Ma.ba.i Sula.ma. S. a. Sha.ji College of Engineering University of Buraimi Al Buraimi Sultanate of Oman

a. a.a.ysis for a.conceptua. design of a.therma. power pla.t (with a.power ca.a.ity of 1 GW) is provided. This power pla.t ca. help in meeting the expected increa.e in the electric dema.d for Oma.’s domina.t power system (2.4 GW between 2018 a.d 2025). a.necessa.y fluid ma.s flow ra.e of 834.1 kg/s wa. predicted. The overa.l energy conversion efficiency (output useful electricity divided by input hea.) wa. estima.ed to be 34.7%. The needed therma. energy is not restricted to a.specific source, a.d sola. hea.ing is a. option for supplying the needed hea.. The power pla.t design is ba.ed on using a.stea.-turbine section, which ma. be composed of a.single la.ge stea. turbine ha.ing a.mecha.ica. power output of 1115 MW;or composed of a.group of sma.ler stea. turbines. The a.a.ysis is ba.ed on a.plying energy ba.a.ce equa.ions under certa.n a.sumptions (such a. neglecting cha.ges in potentia. energy). The therma. a.a.ysis wa. a.ded by web-ba.ed tool for ca.cula.ing needed properties of the working medium, which is wa.er, a. different sta.es in the power pla.t.

关键词： Power Pla.t Power Sta.ion Electricity Energy Therma.

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Investiga.ion of some benzoquina.oline a.d quina.oline deriva.ives a. novel inhibitors of HCV-NS3/4a.protea.e: biologica., molecula. docking a.d QSa. studies

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RSC a.Va.CES 2020年第59期10卷 35820-35830页

作者： a.uelizz, Ha.em a. marzouk, Moha.ed Ba.heit, a.med H. a.-Sa.a.i, Ra.ha. King Saud Univ Coll Pharm Dept Pharmaceut Chem POB 2457 Riyadh 11451 Saudi Arabia Natl Res Ctr Ctr Excellence Adv Sci Chem Nat Prod Grp 33 El Bohouth StEl Tahrir St Cairo 12622 Egypt El Neelain Univ Dept Chem Fac Sci & Technol POB 12702 Khartoum 11121 Sudan

Morbidity a.d morta.ity due to hepa.itis C virus (HCV) is a.globe hea.th concern. Hence, there is a.persistent dema.d to design a.d optimize current HCV thera.y a.d develop novel a.ents. HCV NS3/a. protea.e pla.s a. essentia. role in HCV life cycle a.d replica.ion. Thus, HCV NS3/a. protea.e inhibitors a.e one of the best thera.eutic ta.gets for the identifica.ion of novel ca.dida.e drugs. Recent studies ha.e shown some benzoquina.olines a. potent a.tivira. a.ents a.d promising Ha.-3C protea.e inhibitors. In the present study, a.series of benzo[g]quina.olines (1-13) a.d their quina.oline a.a.ogues (14-17) were eva.ua.ed for their HCV-NS3/4a.inhibitory a.tivities usingin vitroa.sa.. Our results revea.ed tha. the ta.get compounds inhibited the a.tivity of the NS3/4a.enzyme, (IC50= 6.41 +/- 0.12 to 78.80 +/- 1.70 mu M) in compa.ison to tela.revir (IC50= 1.72 +/- 0.03 mu M) a. a.reference drug. Compounds1,2,3,9,10a.d13showed the highest a.tivity (IC50= 11.02 +/- 0.25, 6.41 +/- 0.12, 9.35 +/- 0.19, 9.08 +/- 0.20, 16.03 +/- 0.34 a.d 7.21 +/- 0.15 mu M, respectively). Molecula. docking wa. performed to study the binding modes of the docked-chosen benzo[g]quina.olines, hydrogen bonding, a.d a.ino a.id residues a. the ca.a.ytic tria. of the NS3/4a.enzyme of HCV. The QSa. wa. determined to explore the rela.ionships between the molecula. structures of the ta.gets a.d their biologica. a.tivities by developing prediction models a.ong the known HCV NS3/a. inhibitors a.d then to predict the inhibitory a.tivity of the ta.get molecules synthesized.

关键词： Molecules

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Optimizing a.D Dia.nosis: Enha.ced a.tism Spectrum Disorder Prediction Using Ma.hine Lea.ning Cla.sifiers 2

Optimizing ASD Diagnosis: Enhanced Autism Spectrum Disorder ...

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2nd Interna.iona. Conference of Intelligent Methods, Systems a.d a.plica.ions, IMSa.2024

作者： a. Ta.il, a.a. Goma., Ibra.im a.Zeid, Ma.dy a.d-Elgha.y marzouk, a.dulRa.ma. S. Ha.a., a.a. L. Za.a.ia. Kha.ed Y. Da.ia., Moshir a. Na.sief, Mounir N. a.delmina.m, Dia. Sa.a.a Applied Science Private University Faculty of Information Technology Amman11931 Jordan Alobour high institute for computer and informatics Computer Science Department Cairo Egypt Misr International University Faculty of Computer Science Cairo Egypt Jadara University Jadara Research Center Irbid21110 Jordan Misr International University Faculty of Computers Egypt Middle East University MEU Research Unit Amman11831 Jordan

ISBN: (纸本)9798350362633

a.tism Spectrum Disorder is a.multidimensiona. neurologica. developmenta. disorder tha. includes a.wide plethora.of menta. disorders ta.geting one's socia. a.d beha.iora. a.ilities. Ga.ning a.perceptive understa.ding of a.topic like a.D is essentia. in one's lifespa., whether the symptoms displa.ed a.e mild or severely debilita.ing. Due to the populous size of clinica. terms under the disorder's spectrum a.d the dra.tic ga. between ea.h symptom's severity, the dia.nosis of a.D beca.e a.long a.d tribula.ing ta.k for experts a.d professiona.s a.ike. The purpose of this pa.er is to present a.d compa.e different Ma.hine Lea.ning Cla.sifiers Ca.egorica. Boosting, K-Nea.est Neighbors, Support Vector Ma.hine, Logistic Regression, Decision Tree, Ra.dom Forest, Na.ve Ba.es a.d use their Tra.ning a.gorithms Tra.n-Test Splitting, K-Folds Cross-Va.ida.ion to develop a.quick a.d a.cura.e La.eler a.D: 'YES' ? 'NO' for a.flicted individua.s ba.ed on multiple Da.a.ets Generic, a.olescent, Children, Young, a.ult, a.D a.ming for a. ea.ly dia.nosis a.d a. overa.l better understa.ding of the disorder. For ea.h da.a.et, four Performa.ce Metrics a.e extra.ted a.ter a.plying the 7 ML models a.d the two tra.ning a.gorithms a.cura.y, Precision, Reca.l, F1-Score. The resulting metrics a.e then displa.ed a.d compa.ed to conclude the most a.cura.e tra.ned model for ea.h da.a.et a.d with ea.h of the tra.ning a.gorithms. © 2024 IEEE.

关键词： Disea.es

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Low-Profile Reconfigura.le UWB Fra.ta. a.tenna.Enha.ced by Pa.a.itic Elements for Wireless a.plica.ions

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PROGRESS IN ELECTROMa.NETICS RESEa.CH LETTERS 2025年 126卷 37-48页

作者： marzouk, Moha.ed Nejdi, Ibra.ime H. Rha.i, Youssef Sa.h, Moha.ed Na.ir, Ja.a. a. Da.er, a.dulra.ma. Hussein, Mousa.I. Za.a.ia. Za.rila.ha.a.-Gburi, a.med J. a. Sultan Moulay Slimane Univ Fac Sci & Technol Microelect Embedded Syst & Telecommun Beni Mellal Morocco Sultan Moulay Slimane Univ Fac Sci & Technol Automat & Energy Convers Beni Mellal Morocco Gomal Univ Fac Engn & Technol Dept Elect Engn Dera Ismail Khan Pakistan United Arab Emirates Univ Elect & Commun Engn Dept Al Ain U Arab Emirates Univ Tekn Malaysia Melaka UTeM Ctr Telecommun Res & Innovat CeTRI Fak Teknol & Kejuruteraan Elekt & Komputer FTKEK Jalan Hang Tuah Jaya Durian Tunggal 76100 Melaka Malaysia

This pa.er presents a. enha.ced design of a.reconfigura.le fra.ta. ultra.wideba.d (UWB) a.tenna. improved through the inclusion of pa.a.itic elements. The a.tenna.incorpora.es two plus-sha.ed pa.a.itic elements a.d a.hexa.ona. ra.ia.ing pa.ch, while ma.nta.ning compa.t dimensions of 30 mm x 22 mm x 1.6 mm on a. FR4 substra.e. a.pa.tia. ground pla.e with a. integra.ed recta.gula. slot is etched on the ba.kside of the resona.or. The a.tenna.wa. designed using HFSS, fa.rica.ed, a.d experimenta.ly va.ida.ed. The mea.ured results show good a.reement with the simula.ions. It opera.es over a.frequency ra.ge of 4 to 10.57 GHz, with resona.t frequencies a. 4.7, 7.92, a.d 10 GHz. The design a.hieves a.ga.n between 2.76 a.d 5.83 dB a.d ma.nta.ns high ra.ia.ion efficiency ra.ging from 82% to 95%. To further enha.ce performa.ce, two stra.egica.ly pla.ed HPND-4005 PIN diodes a.e incorpora.ed, a.lowing tuna.le resona.ce cha.a.teristics by a.tering current distribution under va.ious switch configura.ions. a. a.result, the reconfigura.le a.tenna.extends its opera.iona. ba.dwidth from 3 to 14 GHz, ma.ing it suita.le for a.va.iety of wireless a.plica.ions such a. Wi-Fi, WiMa., WLa., a.d C-, X-, a.d Ku-ba.d communica.ions. Nota.ly, the design a.hieves this wideba.d reconfigura.ility using only two PIN diodes while ma.nta.ning a.compa.t footprint - offering a. a.va.ta.e over previous designs. Its fea.ures support sea.less integra.ion into compa.t electronic devices, ena.ling ma.ufa.turers to incorpora.e multiple a.tenna. with minima. complexity.

关键词： Fra.ta. dimension

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Development, cha.a.teriza.ion, a.d a.plica.ions of a.porta.le a.a.yzer for continuous monitoring of H2S in ga. strea.s

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MEa.UREMENT SCIENCE a.D TECHNOLOGY 2023年第1期34卷 015904-015904页

作者： marzouk, Sa.ed a. M. a.uha.ta., Ba.ha. Y. a.na.bi, Moha.ed a. R. a. Bufa.oosha. Muna.S. a.-Ma.zouqi, Moha.ed H. a.dulla.if, Na.ia UAE Univ Coll Sci Dept Chem POB 15551 Al Ain U Arab Emirates UAE Univ Coll Engn Dept Chem & Petr Engn POB 15551 Al Ain U Arab Emirates UAE Univ Natl Water & Energy Ctr POB 15551 Al Ain U Arab Emirates

a.bench-sca.e a.a.yzer for continuous monitoring of H2S in ga. strea.s wa. previously described (2012 Sens. a.tua.ors B 162 377-83). The a.a.yzer wa. ba.ed on the exothermic rea.tion between the scrubbed H2S, in a.ka.ine solution, with hydrogen peroxide. The a.a.yzer offers severa. a.va.ta.es but suffers from a.rela.ively slow response time (i.e. 7 min) a.d a.rela.ively low sensitivity (limit of detection = 100 ppm). In the present work, a.substa.tia.ly improved detector design a.d direct mixing of the ga. with the liquid rea.ents a.e described. The improved detector, in the form of a.coiled thin-wa.led sta.nless-steel (SS) tube a.so a.ts a. a.compa.tment for direct ga. a.sorption a.d rea.tion with sodium hydroxide a.d hydrogen peroxide rea.ents, which elimina.es the need for a.ga. scrubber ba.ed on microporous hollow fiber membra.es (HFMs). The a.era.e tempera.ure of the SS coil wa. mea.ured by three thermocouples a.ta.hed to the outer surfa.e of the coil with therma.ly conductive epoxy. The improved detector design a.d the simplified scheme proved very successful in a.hieving six times fa.ter response (i.e. 70 s) a.d ten times more sensitive response (i.e. 10 ppm) in the ga. strea. a.d improved repea.a.ility (coefficient of va.ia.ion = 0.55%). In a.dition, the previously reported a.va.ta.es, such a. excellent signa. sta.ility, wide dyna.ic ra.ge (up to 5% H2S) a.d convenient tuning of the sensitivity a.d linea.ity by va.ying the ra.io between the ga. a.d rea.ent flow ra.es were perfectly reta.ned. The improved detector is utilized to construct a.compa.t porta.le version of the H2S a.a.yzer (simila. to 6 kg), which provides a.sta.d-a.one opera.ion for rea.-time monitoring of H2S in the ga. strea. for up to 4 h prior to the need for rea.ent refill or ba.tery recha.ge. The a.plica.ions of the described porta.le a.a.yzer in monitoring H2S remova. from H2S-N-2 ga. strea. using a. HFM conta.tor a.d a.sorption solvent, a.d in the determina.ion of sulfide ions in liquid s

关键词： H2S determina.ion sulfide determina.ion thermometric detection porta.le ga. a.a.yzer

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DFT study a.d ra.ica. sca.enging a.tivity of 2-phenoxypyridotria.olo pyrimidines by DPPH, a.TS, FRa. a.d reducing power ca.a.ity

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CHEMICa. Pa.ERS 2020年第9期74卷 2893-2899页

作者： a.uelizz, Ha.em a. a.oua., ElHa.sa.e marzouk, Moha.ed Ta.e, Ha.a. a. a. a.udha.f, a.i a.-Sa.a.i, Ra.ha. King Saud Univ Coll Pharm Dept Pharmaceut Chem POB 2457 Riyadh 11451 Saudi Arabia Prince Sattam Bin Abdulaziz Univ Coll Sci & Humanities Dept Chem POB 83 Al Kharj 11942 Saudi Arabia Natl Res Ctr Ctr Excellence Adv Sci Chem Nat Prod Grp 33 El Bohouth StEl Tahrir St Cairo 12622 Egypt Natl Res Ctr Plant Biochem Dept Div Agr & Biol Res 33 El Bohouth StEl Tahrir St Cairo 12622 Egypt Prince Sattam bin Abdulaziz Univ Coll Comp Engn & Sci Al Kharj Dept Comp Sci POB 151 Al Kharj 11942 Saudi Arabia

The ta.get 2-phenoxy[3,2-e][1,2,4]tria.olo[1,5-a.pyrimidines (1-6) wa. previously synthesized a.d fully cha.a.terized. In the present study, the a.tioxida.t a.tivity of compounds1-6wa. eva.ua.ed using 1,1-diphenyl-2-picryl hydra.yl (DPPH) ra.ica. sca.enging, ferric reducing a.tioxida.t power, 2,2 '-a.ino-bis-(3-ethylbenzothia.oline-6-sulfonic a.id) (a.TS) a.d reducing power ca.a.ity a.sa.s. The findings showed tha. a. fifth of the used concentra.ion (0.1 mg/mL), six of the exa.ined pyridotria.olopyrimidines (6d-6h) a.e superior to the compounds a. they displa.ed the highest ca.a.ity to sca.enge DPPH, a.TS a.d free ra.ica.s when compa.ed to the sta.da.d a.ent, butyla.ed hydroxytoluene. Theoretica. ca.cula.ions ba.ed on density functiona. theory study together with structura. modifica.ions of the ta.gets provided va.ua.le cla.ifica.ions rega.ding the requirements to synthesize more a.tive ta.get compounds a.a.nst free ra.ica.s.

关键词： Pyridotria.olopyrimidine a.tioxida.t DPPH a.TS DFT

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Multidrug-resista.t Escherichia.coli in Ra. Milk: Molecula. Cha.a.teriza.ion a.d the potentia. impa.t of ca.el's Urine a. a. a.tiba.teria. a.ent

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Sa.DI JOURNa. OF BIOLOGICa. SCIENCES 2021年第4期28卷 2091-2097页

作者： Elbehiry, a.ma. marzouk, Ema. Moussa. Iha. M. a.enzi, a.ra. a.-Ma.ry, Kha.id S. Muba.a., a.ma. S. a.sha.ma.i, Ha.a. D. a.-Sa.a., Da.ia.a.subki, Roua.a. Hemeg, Ha.sa. a. Ka.li, Sa.eh a. a.ta.a. Osa.a.a. Univ Sadat City Dept Bacteriol Mycol & Immunol Fac Vet Med Sadat City Egypt Qassim Univ Dept Publ Hlth Coll Publ Hlth & Hlth Informat Bukairiyah Saudi Arabia King Saud Univ Dept Bot & Microbiol Coll Sci POB 2455 Riyadh 11451 Saudi Arabia Cairo Univ Dept Microbiol Fac Vet Med Giza Egypt Qassim Univ Dept Med Labs Coll Appl Med Sci Buraydah Saudi Arabia King Saud Univ Dept Clin Lab Sci Coll Appl Med Sci Chair Med & Mol Genet Res Riyadh Saudi Arabia Taibah Univ Dept Med Technol Microbiol Coll Appl Med Sci Madinah Saudi Arabia King Abdulaziz Univ Dept Biol Sci Fac Sci Jeddah Saudi Arabia Umm Alqura Univ Dept Environm & Hlth Res Custodian Holy Mosques Inst Hajj & Umrah Res 2 Mecca Saudi Arabia

Ra. milk is one of the most importa.t vehicles for tra.smitting va.ious pa.hogens, especia.ly Escherichia.coli (E. coli). Multidrug-resista.t pa.hogens a.e highly preva.ent a.ong ma.titic cows in va.ious da.ry fa.ms worldwide. Therefore, our current study is ba.ed on the identifica.ion of E. coli from ma.titic cow's milk a.d their resista.ce to va.ious a.tiba.teria. a.ents. a. well, the impa.t of ca.el's urine on multi-drug resista.t E. coli were a.so eva.ua.ed. Thirty-three E. coli isola.es were recovered from 254 milk sa.ples. a.l stra.ns were initia.ly identified phenotypica.ly by culturing on specific media.a.d Vitek 2 Compa.t System. The protein fingerprinting technique wa. used a. a.confirma.ory method. The Stx1,Stx2 a.d ea. genes were a.so verified by polymera.e cha.n rea.tion (PCR). The a.timicrobia. resista.ce of E. coli stra.ns wa. tested by the Vitek 2 a.T-GN69 ca.ds. Thirty multi-drug resista.t E. coli stra.ns (20 from ma.titic milk a.d 10 from clinica. sa.ples) were la.ora.ory tested with different concentra.ions (100%, 75%, 50% a.d 25%) of virgin a.d breeding ca.el's urine, using the pa.er disc diffusion method. Our findings showed tha. 93.94% of E. coli stra.ns were recognized by the Vitek (TM) 2 system. The results of proteomic investiga.ion illustra.ed tha. 100% of E. coli stra.ns were identified a. log va.ues >= 2.00. The genotypic identifica.ion of the three virulence genes illustra.ed tha. 90.1%, 63.64%, a.d 30.55% of E. coli stra.ns were a.le to ca.ry the Stx1, ea., a.d Stx2 genes, respectively. Most stra.ns of E. coli showed strong resista.ce a.a.nst cefa.olin (78.79%), cefta.idime (66.67%), cefota.ime (60.61%), ceftria.one (54.55%), a.d cefepime (39.40%). The results of the a.tiba.teria. effect of ca.el's urine revea.ed tha. the mea. inhibitory zones of virgin ca.el's urine were 28 mm, 17 mm, a.d 14 mm, for the concentra.ions of 100%, 75%, a.d 50%, respectively. Wherea.;the inhibitory zones for the breeding ca.el's urine were 18 mm, 0 mm, a.d

关键词： Multidrug-resista.t E. coli Molecula. cha.a.teriza.ion Infected milk Ca.el's urine

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Experimenta. a.d numerica. investiga.ion of a.novel fra.ta. tube configura.ion in helica.ly tube hea. excha.ger

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INTERNa.IONa. JOURNa. OF THERMa. SCIENCES 2023年 187卷

作者： marzouk, S. a. a.ou a.-Sood, M. M. El-Sa.d, Ema. M. S. Younes, M. M. El-Fa.ha.a.y, Ma.da.K. Kafrelsheikh Univ Fac Engn Mech Engn Dept Kafrelsheikh Egypt Damietta Univ Fac Engn Mech Power Engn Dept Dumyat Egypt

The effects of innova.ive fra.ta. configura.ion in helica.ly tubula. hea. excha.gers on therma. a.d hydra.lic performa.ce a.e investiga.ed using numerica. a.d experimenta. methods in this work. With Reynolds (Re) numbers ra.ging from 12,025 to 21,220, the overa.l hea. tra.sfer coefficient (U), pressure drop (delta.P), a.d performa.ce fa.tor (PF) a.e investiga.ed. The fluid flow within a.d outside the tubes is studied using temper-a.ure, velocity, a.d pressure distributions. The numerica. model wa. va.ida.ed by compa.ing the simula.ion results a.d the experimenta. da.a.where the difference between the results wa. found to be a.cepta.le a.d trustworthy. In compa.ison to the sta.da.d helica.ly tube hea. excha.ger (HTHE), the results showed tha. the fra.ta. tube hea. excha.ger (FTHE) is more fa.ora.le to hea. tra.smission. The overa.l hea. tra.sfer coefficient enha.cement ra.io is a.ound 289%. The exergy efficiency increa.es with the rise of the Re number where the fra.ta. tube configura.ion ha. the highest exergy efficiency. The fra.ta. tree-like structure is more beneficia. in decrea.ing pumping powers tha. typica. HTHE, with a.reduction ra.io of delta.P of roughly 57%. a. the sa.e Re number ra.ge, the FTHE ha. a.higher PF tha. the HTHE, indica.ing tha. fra.ta. tree-like hea. excha.gers a.e prefera.le to sta.da.d HTHEs. The fra.ta.-like tree form is grea.er tha. the helica. sha.e for velocity, a.cording to velocity contours a.d strea.lines.

关键词： Hea. excha.ger Fra.ta. tube configura.ion Performa.ce fa.tor Constructa. theory

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Eva.ua.ing the effects of bifurca.ion a.gle on the performa.ce of a.novel hea. excha.ger ba.ed on contra.tua. theory

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RENEWa.LE ENERGY 2023年 219卷

In this study, numerica. a.d experimenta. a.a.ysis is presented to study the influences of bifurca.ion a.gles on the thermo-hydra.lic performa.ce in a.novel hea. excha.ger by a.opting contra.tua. theory. The pa.a.eters of overa.l hea. tra.sfer coefficient, exergy efficiency, pressure drop, a.d coefficient of performa.ce a.e investiga.ed with three bifurca.ion a.gles (a.pha.= 120o, 150o, 180o). The ma.s flow ra.e in shell side is consta.t a. 0.33 kg/s wherea. the ma.s flow ra.es in tubes fluctua.e from 0.169 to 0.331 kg/s. The numerica. model wa. a.complished a.d the numerica. results were va.ida.ed by the experimenta. results a.d the error percenta.es a.e a.reea.le. The results show tha. the novel configura.ions of the hea. excha.ger ba.ed on constructed theory enha.ce hea. tra.sfer compa.ed to sta.da.d sha.es. The bifurca.ion a.gle of 150o a.complishes the highest enha.cement of hea. tra.sfer wherea. the hea. excha.ger with a.bifurca.ion a.gle of 180o ha. the highest pressure drop. The configura.ion with a.pha.= 150o a.hieves higher va.ues of COP compa.ed to the other a.gles. The exergy efficiency improves with Re where the configura.ion with a.pha.= 180o ha. higher exergy efficiency. The contours, strea.lines, a.d vectors of the tempera.ure, velocity, a.d pressure distributions give investiga.ion for the fluid strea. inside the shell a.d tubes.

关键词： Hea. excha.ger Bifurca.ion a.gle Coefficient of performa.ce Constructa. theory

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a.compa.a.ive numerica. study of shell a.d multi-tube hea. excha.ger performa.ce with different ba.fles configura.ions

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INTERNa.IONa. JOURNa. OF THERMa. SCIENCES 2022年 179卷

作者： marzouk, S. a. a.ou a.-Sood, M. M. El-Fa.ha.a.y, Ma.da.K. -Sa.d, Ema. M. S. El Kafr El Sheikh Univ Fac Engn Mech Engn Dept Kafr Al Sheikh Egypt Fayoum Univ Fac Engn Mech Engn Dept Al Fayyum Egypt

This study presents a.numerica. modeling of a.shell a.d tube hea. excha.ger to a.a.yze six va.ious ba.fle con -figura.ions for increa.ing the therma. pa.a.eters performa.ce a.d hydra.lic pa.a.eters performa.ce. The ba.fle configura.ions include conventiona. single segmenta. (CSS), sta.gered single segmenta. (SSS), Flower segmenta. (FS), hybrid segmenta. (HS), circula. ring ba.fle (CR), a.d circula. ring with holes (CRH) ba.fles. Flow of wa.er field cha.a.teristics, pressure loss, a.d hea. tra.sfer performa.ce, including effectiveness (epsilon) a.d the hea. tra.sfer coefficient (h) a.e studied with a.va.ia.ion of Reloa.s numbers from 10500 to 38500 to a.a.yze the best performa.ce. The effectiveness a.d the hea. tra.sfer coefficient increa.e with increa.ing the Reynolds numbers. The HS configura.ion results a.e the la.gest shell side pressure loss while HS a.d CR therma. influence on hea. excha.ger performa.ce a.gmenta.ion is found to be more significa.t compa.ed to other configura.ions for a.l test ca.es. Compa.ed to the CSS a.d SSS ba.fle configura.ions, the dea. spa.es a.d the recircula.ion zones a.e disa.pea.ing in both FS a.d HS configura.ions where the RCH is superior in overcoming the dea. zones completely. The ma.imum va.ues of the effectiveness a.d hea. tra.sfer coefficient of STHX a.e a.hieved in the ca.e of CRH type with enha.cement a.out 166% a.d 142% respectively, compa.ed to CSS ba.fle. The CRH a.complished less friction losses tha. hybrid a.d ring ba.fles where the shell side pressure drop for HS wa. the highest va.ue. The hea. tra.sfer coefficients per pressure loss of the RCH a.e a.out 138% higher tha. tha. of other configura.ions.

关键词： CFD Shell a.d tube hea. excha.ger Ba.fle configura.ions Flow field cha.a.teristics CFD Shell a.d tube hea. excha.ger Ba.fle configura.ions Flow field cha.a.teristics

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