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Metal hydrides (MH) inozivikanwa seimwe yeakanyanya kukodzera mapoka ezvinyorwa zvehaidhirojeni yekuchengetedza nekuda kwehukuru hwavo hwekuchengetera hydrogen, kuderera kwekushandisa uye kuchengetedzwa kwakanyanya.Nekudaro, yavo inononoka hydrogen yekukwira kinetics inoderedza zvakanyanya kuchengetedza kuita.Kukurumidza kupisa kubviswa kubva kuMH kuchengetedza kunogona kuita basa rinokosha pakuwedzera hydrogen uptake rate, zvichiita kuti kuchengetedzwa kwekuchengetedza kuwedzere.Panyaya iyi, chidzidzo ichi chaive nechinangwa chekuvandudza maitiro ekupisa kwekushisa kuitira kuti zvive nemafungiro akanaka ekugadzirisa hydrogen yehuwandu hweMH kuchengetedza.Iyo nyowani semi-cylindrical coil yakatanga kugadzirwa uye yakagadziridzwa kuchengetedza haidrojeni uye yakasanganiswa seyemukati mhepo-se-kupisa exchanger (HTF).Zvichienderana neakasiyana saizi yepitch, mhedzisiro yeiyo nyowani yekupisa yekupisa inoongororwa uye ichienzaniswa neyakajairika helical coil geometry.Pamusoro pezvo, maparamita ekushanda ekuchengetedza MG uye GTP akaverengerwa nhamba kuti awane hunhu hwakanaka.Pakuenzanisa nhamba, ANSYS Fluent 2020 R2 inoshandiswa.Migumisiro yechidzidzo ichi inoratidza kuti kushanda kweMH kuchengetedza tangi kunogona kuvandudzwa zvikuru nekushandisa semi-cylindrical coil heat exchanger (SCHE).Kuenzaniswa neyakajairwa spiral coil heat exchangers, nguva yekutorwa kwehydrogen inoderedzwa ne59%.Chinhambwe chidiki pakati pemakoiri eSCHE chakakonzera kudzikiswa kwe61% munguva yekunyura.Nezve maparamita anoshanda eMG kuchengetedza uchishandisa SHE, ese akasarudzwa ma paramita anotungamira kune yakakosha kuvandudzwa kwehydrogen absorption process, kunyanya tembiricha painopinza kuHTS.
Pane shanduko yepasi rose kubva kusimba rinobva pamafuta efossil kuenda kusimba rinogonekazve.Nekuti akawanda marudzi esimba rinodzokororwa anopa simba nenzira ine simba, kuchengetedza kwesimba kunodiwa kuenzanisa mutoro.Hydrogen-yakavakirwa simba rekuchengetedza yakwezva kutarisisa kwakawanda nekuda kwechinangwa ichi, kunyanya nekuti hydrogen inogona kushandiswa se "girinhi" imwe mafuta uye inotakura simba nekuda kwehunhu hwayo uye kutakura.Pamusoro pezvo, haidrojeni inopawo yakakwira simba zvemukati payuniti misa zvichienzaniswa nemafuta efosi2.Kune mana makuru emhando dzehydrogen simba rekuchengetedza: yakadzvanywa gasi chengetedzo, yepasi pevhu, yekuchengetedza mvura, uye yakasimba kuchengetedza.Compressed hydrogen ndiyo mhando huru inoshandiswa mumotokari dzemafuta semabhazi nemaforklift.Zvakadaro, chengetedzo iyi inopa yakaderera yakawanda density yehydrogen (inenge 0.089 kg/m3) uye ine nyaya dzekuchengetedza dzine chekuita nepamusoro pekushandisa pressure3.Zvichienderana neshanduko yekushandura pane yakaderera ambient tembiricha uye kudzvanywa, iyo yekuchengetera mvura inochengeta hydrogen muchimiro chemvura.Nekudaro, kana yakanyungudutswa, inenge 40% yesimba inorasika.Pamusoro pezvo, tekinoroji iyi inozivikanwa kuve ine simba rakawanda uye kushanda nesimba kana ichienzaniswa neakasimba mamiriro ekuchengetedza matekinoroji4.Kuchengetera kwakasimba isarudzo inoshanda kune hupfumi hwehydrogen, iyo inochengeta haidrojeni nekubatanidza haidrojeni muzvinhu zvakasimba kuburikidza nekusveta uye kuburitsa haidhirojeni kuburikidza nekunyungudika.Metal hydride (MH), yakasimba yekuchengetedza zvinhu tekinoroji, ndeyekufarira ichangoburwa mumafuta cell application nekuda kwekukwira kwayo hydrogen, kuderera kwekushandisa, uye mutengo wakaderera uchienzaniswa nekuchengetedza mvura, uye inokodzera zvimire uye nharembozha6,7 In. kuwedzera, MH zvinhu zvinopawo kuchengetedza zvinhu zvakadai sekuchengetedza kwakanaka kwehukuru hukuru8.Zvisinei, pane dambudziko rinomisa kubereka kweMG: iyo yakaderera yekupisa conductivity yeMG reactor inotungamirira kunonoka kutora uye kupera kwehydrogen.
Kupisa kwakakodzera kwekushisa panguva ye exothermic uye endothermic reactions ndiyo kiyi yekuvandudza kushanda kweMH reactors.Kune iyo haidhirojeni yekurodha maitiro, kupisa kunogadzirwa kunofanirwa kubviswa kubva kune reactor kuitira kudzora kuyerera kwehydrogen kuyerera pachiyero chinodiwa nehukuru hwekuchengetedza.Pane kudaro, kupisa kunodiwa kuwedzera chiyero chehydrogen evolution panguva yekubuda.Kuti uvandudze kupisa uye hukuru hwekufambisa kuita, vaongorori vazhinji vakadzidza dhizaini uye optimization zvichienderana nezvakawanda zvinhu zvakaita semashandisirwo paramita, MG chimiro, uye MG11 optimization.MG optimization inogona kuitwa nekuwedzera yakakwira yekupisa conductivity zvinhu senge furo simbi kune MG akaturikidzana 12,13.Saka, iyo inoshanda yekupisa conductivity inogona kuwedzerwa kubva ku0.1 kusvika ku2 W / mK10.Nekudaro, kuwedzerwa kwezvinhu zvakasimba kunoderedza zvakanyanya simba reMN reactor.Nezve maparamita ekushanda, kuvandudzwa kunogona kuwanikwa nekugadzirisa mamiriro ekutanga ekushanda kweMG layer uye inotonhorera (HTF).Chimiro cheMG chinogona kugadziridzwa nekuda kweiyo geometry yeiyo reactor uye dhizaini yekupisa kupisa.Nezvekugadziriswa kweMH reactor heat exchanger, nzira dzinogona kugoverwa mumhando mbiri.Aya ndiwo emukati ekupisa anochinjisa akavakirwa muMO layer uye ekunze kupisa anopisa anofukidza iyo MO layer senge zvimbi, mabhachi ekutonhodza uye yekugezesa mvura.Nezvekupisa kwekunze kwekunze, Kaplan16 akaongorora kushanda kweMH reactor, achishandisa mvura inotonhorera sejasi kuderedza kutonhora mukati me reactor.Mhedzisiro yacho yakaenzaniswa ne22 round fin reactor uye imwe reactor yakatonhodzwa ne natural convection.Vanotaura kuti kuvapo kwejasi rekutonhora kunoderedza zvakanyanya kupisa kweMH, nekudaro kunowedzera chiyero chekutora.Zvidzidzo zvenhamba zvemvura-jaketi yeMH reactor naPatil naGopal17 zvakaratidza kuti hydrogen inopa kumanikidza uye tembiricha yeHTF ndiwo maparamendi akakosha anokonzera chiyero chekutora hydrogen uye desorption.
Kuwedzera nzvimbo yekupisa kupisa nekuwedzera fins uye kupisa kunopisa zvakavakwa muMH ndiyo kiyi yekuvandudza kupisa uye hukuru hwekufambisa kuita uye nekudaro kuchengetedza kweMH18.Zvizhinji zvemukati zvekupisa exchanger zvigadziriso (yakatwasuka chubhu uye spiral coil) yakagadzirirwa kutenderedza inotonhorera muMH19,20,21,22,23,24,25,26 reactor.Uchishandisa mutsinhanisi wemukati wekupisa, iyo inotonhorera kana yekudziya mvura inoendesa kupisa kwenzvimbo mukati meMH reactor panguva yehydrogen adsorption process.Raju naKumar [27] vakashandisa akati wandei akatwasuka machubhu seanotsinhanisa kupisa kuvandudza mashandiro eMG.Mhedzisiro yavo yakaratidza kuti nguva dzekunyura dzakaderedzwa kana machubhu akatwasuka akashandiswa seanopisa.Mukuwedzera, kushandiswa kwemachubhu akatwasuka kunopfupisa nguva yehydrogen desorption28.Yepamusoro inotonhorera kuyerera mwero inowedzera mwero wekuchaja kwehydrogen uye kuburitsa29.Zvisinei, kuwedzera kuwanda kwemachubhu ekutonhora kune simba rakanaka paMH kushanda pane kutonhora kuyerera kwe30,31.Raju et al.32 vakashandisa LaMi4.7Al0.3 seMH zvinhu kuti vadzidze kushanda kwemafuta akawanda ekupisa mumagetsi.Vakataura kuti maparamendi ekushanda aive nemhedzisiro yakakosha pakuita kunyura, kunyanya kudzvinyirirwa kwekudya uyezve kuyerera kweHTF.Nekudaro, tembiricha yekunyura yakave isinganyanyi kukosha.
Kuitwa kweMH reactor kunowedzera kuvandudzwa nekushandiswa kwe spiral coil heat exchanger nekuda kwekuvandudzwa kwayo kwekushisa kwekushisa kuenzaniswa nemachubhu akatwasuka.Izvi zvinodaro nekuti yechipiri kutenderera inogona kubvisa zvirinani kupisa kubva kune reactor25.Mukuwedzera, iyo spiral tubes inopa nzvimbo yakakura yepamusoro yekupisa kupisa kubva paMH layer kusvika kune inotonhorera.Kana iyi nzira inounzwa mukati meiyo reactor, kugoverwa kwekushisa kwekuchinjana machubhu kunowedzerawo yunifomu33.Wang et al.34 yakadzidza mhedzisiro yehydrogen kutora nguva nekuwedzera helical coil kune MH reactor.Mhedzisiro yavo inoratidza kuti sezvo kupisa kwekutamisa coefficient yeinotonhorera inowedzera, nguva yekunyura inodzikira.Wu et al.25 yakaongorora mashandiro eMg2Ni based MH reactors uye coil heat exchangers.Zvidzidzo zvavo zvenhamba zvakaratidza kudzikiswa kwenguva yekuita.Kunatsurudzwa kwemuchina wekufambisa kupisa muMN reactor kwakavakirwa pachiyero chidiki che screw pitch kusvika ku screw pitch uye dimensionless screw pitch.Chidzidzo chekuedza chakaitwa naMellouli et al.21 vachishandisa coil yakasungirirwa sechinhu chinopisa chemukati chakaratidza kuti HTF inotanga kupisa ine simba guru pakuvandudza hydrogen uptake uye desorption nguva.Kusanganiswa kwezvakasiyana-siyana zvekupisa kwemukati zvakaitwa mune zvidzidzo zvakawanda.Eisapur et al.35 yakadzidza kuchengetwa kwehaidhirojeni uchishandisa spiral coil heat exchanger ine yepakati yekudzosera chubhu kuti ivandudze iyo hydrogen absorption process.Mhedzisiro yavo yakaratidza kuti spiral chubhu uye yepakati yekudzoka chubhu inovandudza zvakanyanya kutamisa kupisa pakati peinotonhorera neMG.Iyo diki pitch uye yakakura dhayamita yespiral chubhu inowedzera mwero wekupisa uye kutamisa hukuru.Ardahaie et al.36 yakashandisa flat spiral machubhu seanotsinhanisa kupisa kuti avandudze kutamisa kupisa mukati me reactor.Vakataura kuti nguva yekunyura yakaderedzwa nekuwedzera huwandu hwemapuratifomu espiral tube ndege.Kusanganiswa kwezvakasiyana-siyana zvekupisa kwemukati zvakaitwa mune zvidzidzo zvakawanda.Dhau et al.37 yakavandudza mashandiro eMH uchishandisa coiled coil heat exchanger uye zvimbi.Migumisiro yavo inoratidza kuti nzira iyi inoderedza nguva yekuzadza hydrogen nechikamu che2 kana ichienzaniswa nemhosva isina zvimbi.Iwo annular fins anosanganiswa nemachubhu ekutonhodza uye akavakirwa muMN reactor.Mhedzisiro yechidzidzo ichi inoratidza kuti iyi nzira yakasanganiswa inopa yunifomu yekupisa kupisa kana ichienzaniswa neMH reactor isina zvimbi.Zvisinei, kubatanidza zvakasiyana-siyana zvinopisa zvinopisa zvinokanganisa huremu uye huwandu hweMH reactor.Wu et al.18 akaenzanisa zvakasiyana kupisa exchanger zvigadziriso.Izvi zvinosanganisira machubhu akatwasuka, zvimbi uye spiral coils.Vanyori vanoshuma kuti spiral coils inopa kuvandudzwa kwakanyanya mukupisa uye kutamisa hukuru.Pamusoro pezvo, kana zvichienzaniswa nemachubhu akatwasuka, machubhu akamonerwa, uye machubhu akatwasuka akasanganiswa nemachubhu akamoneredzwa, makoiri maviri ane mhedzisiro iri nani pakuvandudza kupisa kupisa.Chidzidzo chakaitwa naSekhar et al.40 yakaratidza kuti kuvandudzwa kwakafanana mukutora hydrogen kwakawanikwa uchishandisa spiral coil seyemukati wekupisa kupisa uye jekete rekunze rinotonhorera rekunze.
Pakati pemienzaniso yataurwa pamusoro apa, kushandiswa kwe spiral coils semukati wekupisa kupisa kunopa zviri nani kupisa uye hukuru hwekutamisa kuvandudzwa pane dzimwe kupisa kunopisa, kunyanya machubhu akatwasuka uye zvimbi.Naizvozvo, chinangwa chechidzidzo ichi chaive chekuenderera mberi nekuvandudza spiral coil yekuvandudza mashandiro ekutamisa kupisa.Kwenguva yekutanga, itsva semi-cylindrical coil yakagadzirwa zvichienderana neyakajairwa MH yekuchengetedza helical coil.Ichi chidzidzo chinotarisirwa kuvandudza hydrogen kuchengetedza kushanda nekufunga kutsva kwekupisa dhizaini ine zvirinani kupisa nzvimbo yekutamisa nzvimbo inopihwa neiyo inogara vhoriyamu yeMH mubhedha uye HTF machubhu.Kuitwa kwekuchengetedza kweiyi nyowani yekupisa kwakabva kwafananidzwa neyakajairika spiral coil heat exchangers zvichibva pane akasiyana coil pitches.Maererano nemabhuku aripo, mamiriro ekushanda uye kuparadzaniswa kwemakoiri ndizvo zvinhu zvikuru zvinokanganisa kushanda kweMH reactors.Kuti uwedzere dhizaini yeiyi nyowani yekupisa, mhedzisiro yecoil spacing pane hydrogen kutora nguva uye MH vhoriyamu yakaongororwa.Uye zvakare, kuti tinzwisise hukama pakati peiyo mitsva yehemi-cylindrical coils uye mamiriro ekushanda, chinangwa chechipiri chechidzidzo ichi chaive chekudzidza maitiro eiyo reactor zvinoenderana neakasiyana ekushandisa parameter renji uye kuona kukosha kwakakodzera kune yega yega inoshanda. mode.parameter.
Kuitwa kwehydrogen simba rekuchengetedza mudziyo muchidzidzo ichi kunoongororwa zvichienderana nemaitiro maviri ekupisa anopisa (kusanganisira spiral tubes muzviitiko 1 kusvika 3 uye semi-cylindrical tubes muzviitiko 4 kusvika 6) uye kuongorora kwekunzwa kwemaitiro ekushanda.Kushanda kweMH reactor kwakaedzwa kekutanga uchishandisa spiral tube sechinhu chinopisa.Ose ari maviri pombi yemafuta anotonhorera uye MH reactor ngarava inogadzirwa nesimbi isina tsvina.Izvo zvinofanirwa kucherechedzwa kuti zviyero zveMG reactor uye dhayamita yepombi dzeGTF dzaive dzisingaperi muzviitiko zvese, nepo saizi yeGTF yakasiyana.Ichi chikamu chinoongorora mashandiro ehukuru hwehtf coils.Kureba uye kureba kwekunze kweiyo reactor yaive 110 mm uye 156 mm, zvichiteerana.Iyo dhayamita yepombi yemafuta inotakura kupisa inoiswa pa6mm.Ona Supplementary Chikamu kuti uwane ruzivo nezveMH reactor redunhu dhayagiramu ine spiral chubhu uye maviri semi-cylindrical chubhu.
Pamusoro pemuonde.1a inoratidza MH spiral tube reactor uye zviyero zvayo.Yese geometric parameters inopiwa mutafura.1. Huwandu hwehuwandu hwehelix uye huwandu hweZG hunenge 100 cm3 uye 2000 cm3, maererano.Kubva pane iyi MH reactor, mhepo iri muchimiro cheHTF yakadyiswa mukati meporous MH reactor kubva pasi kuburikidza ne spiral tube, uye hydrogen yakaunzwa kubva kumusoro kweiyo reactor.
Hunhu hwema geometries akasarudzwa esimbi hydride reactor.a) ine spiral-tubular heat exchanger, b) ine semi-cylindrical tubular heat exchanger.
Chikamu chechipiri chinoongorora kushanda kweMH reactor inobva pane semi-cylindrical tube semhepo inopisa.Pamusoro pemuonde.1b inoratidza MN reactor ine maviri semi-cylindrical machubhu uye hukuru hwayo.Tafura 1 inonyora ese geometric parameters yesemi-cylindrical mapaipi, ayo anoramba akamira, kunze kwechinhambwe chiri pakati pavo.Izvo zvinofanirwa kucherechedzwa kuti iyo semi-cylindrical chubhu muCase 4 yakagadzirwa neiyo inogara vhoriyamu yeHTF chubhu uye MH alloy mucoiled chubhu (sarudzo 3).Kana ari muonde.1b, mhepo yakaunzwa zvakare kubva pasi pemasemi-cylindrical HTF machubhu, uye hydrogen yakaunzwa kubva kune yakatarisana neMH reactor.
Nekuda kweiyo dhizaini nyowani yekupisa kupisa, chinangwa chechikamu ichi ndechekuona akakodzera ekutanga kukosha kweanoshanda paramita yeMH reactor yakabatana neSCHE.Muzviitiko zvese, mhepo yaishandiswa sechinhu chinotonhorera kubvisa kupisa kubva kune reactor.Pakati pemafuta ekutamisa kupisa, mhepo nemvura zvinowanzosarudzwa semafuta ekufambisa kupisa kweMH reactors nekuda kwekudhura kwavo uye kuderera kwezvakatipoteredza.Nekuda kwekushisa kwakanyanya kwekushanda kwe magnesium-based alloys, mweya wakasarudzwa seanotonhodza muchidzidzo ichi.Pamusoro pezvo, ine zvakare hunhu hwekuyerera huri nani pane mamwe masimbi emvura uye munyu wakanyungudutswa41.Tafura 2 inonyora zvinhu zvemhepo pa 573 K. Nokuda kwekuongorora kwekunzwa muchikamu chino, chete zvigadziro zvakanakisisa zveMH-SCHE maitiro ekushanda (muzviitiko 4 kusvika ku6) zvinoshandiswa.Iko kufungidzira muchikamu chino kunobva pane dzakasiyana siyana dzekushanda paramita, kusanganisira yekutanga tembiricha yeMH reactor, iyo hydrogen loading pressure, HTF inlet tembiricha, uye Reynolds nhamba yakaverengerwa nekushandura HTF chiyero.Tafura 3 ine ese anoshanda ma parameter anoshandiswa pa sensitivity analysis.
Ichi chikamu chinotsanangura ese anodiwa ekutonga equation yemaitiro ekutorwa kwehydrogen, mhirizhonga uye kupisa kwekufambisa kwezvinotonhorera.
Kurerutsa mhinduro yehydrogen uptake reaction, fungidziro dzinotevera dzinoitwa uye dzinopihwa;
Panguva yekunwa, iyo thermophysical properties yehydrogen uye metal hydrides inogara iripo.
Hydrogen inoonekwa seyakanaka gasi, saka emuno kupisa kwemamiriro ezvinhu43,44 anotorwa mukufunga.
apo \({L}_{gasi}\) iri radius yetangi, uye \({L}_{kupisa}\) ndiko kureba kweaxial kwetangi.Kana N iri pasi pe 0.0146, iyo hydrogen inoyerera mutangi inogona kuregererwa mukufananidza pasina kukanganisa kukuru.Maererano nekutsvakurudza kwemazuva ano, N yakaderera zvikuru kupfuura 0.1.Naizvozvo, iyo pressure gradient effect inogona kuregeredzwa.
The reactor madziro akanga akanyatso insulated muzviitiko zvose.Naizvozvo, hapana kupisa kwekuchinja 47 pakati peiyo reactor uye zvakatipoteredza.
Zvinonyatsozivikanwa kuti maMg-based alloys ane yakanaka hydrogenation maitiro uye yakakwirira hydrogen kuchengetedza kukwanisa kusvika 7.6 wt% 8.Panyaya yeyakasimba state hydrogen kuchengetedza maapplication, aya alloys anozivikanwa zvakare seakareruka zvinhu.Mukuwedzera, ivo vane yakanakisa kupisa kupisa uye yakanaka processability8.Pakati peMg-based alloys akati wandei, Mg2Ni-based MgNi alloy ndiyo imwe yedzakanyanya kukodzera sarudzo dzeMH kuchengetedza nekuda kweiyo haidrojeni yekuchengetedza inosvika 6 wt%.Mg2Ni alloys inopawo kukurumidza adsorption uye desorption kinetics kana ichienzaniswa neMgH48 alloy.Naizvozvo, Mg2Ni yakasarudzwa sesimbi hydride zvinhu muchidzidzo ichi.
Iyo equation yesimba inoratidzwa se25 zvichibva pachiyero chekupisa pakati pehydrogen neMg2Ni hydride:
X ndiyo huwandu hwehydrogen yakanyudzwa pamusoro pesimbi, iyo unit iri \(huremu\%\), yakaverengerwa kubva kukinetic equation \(\frac{dX}{dt}\) panguva yekunyura sezvinotevera49:
apo \({C}_{a}\) ndiyo inonzi reaction rate uye \({E}_{a}\) ndiyo simba rekuita.\({P}_{a,eq}\) ndiyo dzvinyiriro yekuenzanisa mukati mesimbi hydride reactor panguva yekunyura, yakapihwa nevan't Hoff equation sezvinotevera25:
Papi \({P}_{ref}\) pane dzvinyiriro ye0.1 MPa.\(\ Delta H\) uye \(\ Delta S\) ndiyo enthalpy uye entropy yemaitiro, zvichiteerana.Zvivakwa zvealloys Mg2Ni uye hydrogen zvinoratidzwa mutafura.4. Rondedzero yakanyorwa inogona kuwanikwa muchikamu chekuwedzera.
Kuyerera kwemvura kunoonekwa sekunetsa nekuti kumhanya kwayo uye nhamba yeReynolds (Re) i78.75 ms-1 uye 14000, zvichiteerana.Muchidzidzo ichi, yakasarudzwa k-ε turbulence modhi inogoneka.Zvinocherechedzwa kuti nzira iyi inopa hupamhi hwepamusoro kana ichienzaniswa nedzimwe nzira dze k-ε, uye inodawo nguva shoma yekuverengera kupfuura RNG k-ε50,51 nzira.Ona Chikamu cheSupplementary kuti uwane ruzivo rwemabasic equations emvura inotamisa kupisa.
Pakutanga, hutongi hwekushisa muMN reactor hwaive yunifomu, uye avhareji yehydrogen concentration yaive 0.043.Inofungidzirwa kuti muganhu wekunze weMH reactor wakanyatsovharwa.Magnesium-based alloys inowanzoda yakakwira maitiro ekushanda tembiricha kuchengetedza uye kuburitsa hydrogen mu reactor.Iyo Mg2Ni alloy inoda tembiricha ye523-603 K yekunyura zvakanyanya uye tembiricha ye573-603 K yekupedza desorption52.Zvisinei, zvidzidzo zvekuedza naMuthukumar et al.53 zvakaratidza kuti huwandu hwekuchengetedza huwandu hweMg2Ni hwekuchengetedza hydrogen hunogona kuwanikwa pakushanda kwekushisa kwe573 K, iyo inofananidzwa nehuwandu hwayo hwekunyora.Naizvozvo, tembiricha ye573 K yakasarudzwa seyekutanga tembiricha yeMN reactor muchidzidzo ichi.
Gadzira masaizi egidhi akasiyana ekusimbisa uye mhedzisiro yakavimbika.Pamusoro pemuonde.2 inoratidza avhareji tembiricha panzvimbo dzakasarudzwa mune yehydrogen absorption process kubva kune ina dzakasiyana zvinhu.Zvakakosha kucherechedza kuti nyaya imwe chete yegadziriro yega yega inosarudzwa kuyedza kuzvimirira kwegidhi nekuda kweiyo geometry yakafanana.Iyo imwechete meshing nzira inoshandiswa mune zvimwe zviitiko.Naizvozvo, sarudza sarudzo 1 yepombi inotenderera uye sarudzo 4 ye semi-cylindrical pombi.Pamusoro pemuonde.2a, b inoratidza avhareji tembiricha mureactor yesarudzo 1 ne4, zvichiteerana.Idzi nzvimbo nhatu dzakasarudzwa dzinomiririra tembiricha yemubhedha kumusoro, pakati, uye pasi pe reactor.Zvichienderana netembiricha contours munzvimbo dzakasarudzwa, avhareji tembiricha inodzikama uye inoratidza shanduko shoma muzvikamu zvezvikamu 428,891 uye 430,599 pamakesi 1 ne4, zvichiteerana.Naizvozvo, aya magidhi saizi akasarudzwa kuti awedzere kuverenga.Ruzivo rwakadzama pamusoro peavhareji tembiricha yemubhedha yeiyo hydrogen yekunyudza maitiro eakasiyana maseru saizi uye akatevedzana akakwenenzverwa meshes emakesi ese ari maviri anopihwa muchikamu chekuwedzera.
Avhareji tembiricha yemubhedha panzvimbo dzakasarudzwa mune yehydrogen absorption process musimbi hydride reactor ine manhamba egidhi akasiyana.(a) Avhareji yetembiricha munzvimbo dzakasarudzwa dzekesi 1 uye (b) Avhareji yetembiricha munzvimbo dzakasarudzwa dzekesi 4.
Iyo Mg-based metal hydride reactor muchidzidzo ichi yakaedzwa zvichienderana nemhedzisiro yekuedza yaMuthukumar et al.53.Muchidzidzo chavo, vakashandisa Mg2Ni alloy kuchengeta hydrogen mumachubhu esimbi isina tsvina.Mhangura zvimbi zvinoshandiswa kunatsiridza kupisa kupisa mukati me reactor.Pamusoro pemuonde.3a inoratidza kuenzanisa kweavhareji tembiricha yemubhedha wekutora nzira pakati pechidzidzo chekuyedza nechidzidzo ichi.Mamiriro ekushanda akasarudzwa pakuedza uku ndeaya: MG tembiricha yekutanga 573 K uye inlet pressure 2 MPa.Kubva muonde.3a inogona kuratidzwa zvakajeka kuti iyi mhedzisiro yekuyedza iri muchibvumirano chakanaka neino iripo maererano neavhareji tembiricha.
Model verification.(a) Code verification yeMg2Ni metal hydride reactor nekuenzanisa chidzidzo chazvino nebasa rekuyedza raMuthukumar et al.52, uye (b) ongororo yespiral tube turbulent flow model nekuenzanisa chidzidzo chazvino nechaKumar et al. .Tsvakurudzo.54.
Kuti uedze mhirizhonga yemuenzaniso, zvigumisiro zvechidzidzo ichi zvakaenzaniswa nemigumisiro yekuedza yaKumar et al.54 kuti isimbise kururamisa kwemuenzaniso wakasarudzwa wemhirizhonga.Kumar et al.54 vakadzidza mhirizhonga inoyerera muchubhu-mu-pipe spiral heat exchanger.Mvura inoshandiswa semvura inopisa uye inotonhora inobayiwa kubva kumativi akasiyana.Iyo inopisa uye inotonhora mvura tembiricha ndeye 323 K uye 300 K, zvichiteerana.Nhamba dzeReynolds dzinobva pa3100 kusvika pa5700 dzezvinwiwa zvinopisa uye kubva pa21,000 kusvika pa35,000 pazvinwiwa zvinotonhora.Nhamba dzeDean i550-1000 yezvinwiwa zvinopisa uye 3600-6000 yezvinwiwa zvinotonhora.Madhayamita epombi yemukati (yemvura inopisa) uye pombi yekunze (yemvura inotonhora) ndeye 0.0254 m uye 0.0508 m, zvichiteerana.Iyo dhayamita uye kukwirira kweiyo helical coil ndeye 0.762 m uye 0.100 m, zvichiteerana.Pamusoro pemuonde.3b inoratidza kuenzanisa kwekuedza uye zvazvino mhedzisiro yezviviri zvakasiyana zveNusselt neDean nhamba dzeinotonhorera muchubhu yemukati.Zvitatu zvakasiyana-siyana zvemhirizhonga zvakashandiswa uye zvichienzaniswa nemigumisiro yekuedza.Sezvinoratidzwa mufig.3b, mhedzisiro yeinogoneka k-e turbulence modhi iri muchibvumirano chakanaka nedata rekuyedza.Naizvozvo, modhi iyi yakasarudzwa muchidzidzo ichi.
Nhamba dzekuenzanisa muchidzidzo ichi dzakaitwa pachishandiswa ANSYS Fluent 2020 R2.Nyora Mushandisi-Yakatsanangurwa Basa (UDF) uye uishandise senguva yekuisa yesimba equation kuverenga kinetics yekunyudza maitiro.Iyo PRESTO55 yedunhu uye iyo PISO56 nzira inoshandiswa kune kumanikidza-velocity kutaurirana uye kudzoreredza kudzvinyirira.Sarudza Greene-Gauss cell base yeiyo inoshanduka gradient.Iko kukurumidza uye simba equations zvinogadziriswa neyechipiri-yekurongeka upwind nzira.Nezve iyo under-relaxation coefficients, kudzvanywa, velocity, uye simba zvikamu zvakaiswa ku 0.5, 0.7, uye 0.7, zvichiteerana.Iwo akajairwa madziro mabasa anoiswa kune HTF mune iyo turbulence modhi.
Ichi chikamu chinopa mhedzisiro yenhamba yekuenzanisira yekuvandudza kupisa kwemukati kweMH reactor uchishandisa coiled coil heat exchanger (HCHE) uye helical coil heat exchanger (SCHE) panguva yekutorwa kwehydrogen.Mhedzisiro yehtf pitch pane tembiricha yemubhedha we reactor uye nguva yekunyura yakaongororwa.Iwo makuru ekushandisa maparamita eiyo absorption process anodzidzwa uye anoratidzwa muchikamu chekuongorora chekunzwa.
Kuti uongorore mhedzisiro yecoil spacing pakuchinjisa kupisa muMH reactor, matatu ekupisa anopisa masisitimu ane akasiyana pitches akaongororwa.Iwo matatu akasiyana mapiji e15mm, 12.86mm uye 10mm akasarudzwa muviri 1, muviri 2 uye muviri 3 zvakateerana.Izvo zvinofanirwa kucherechedzwa kuti iyo dhayamita yepombi yakagadziriswa pa 6 mm pane yekutanga tembiricha ye573 K uye kurodha kumanikidza kwe 1.8 MPa mune zvese zviitiko.Pamusoro pemuonde.4 inoratidza avhareji yekushisa kwemubhedha uye hydrogen concentration muMH layer panguva ye hydrogen absorption process mumatambudziko 1 kusvika 3. Kazhinji, maitiro pakati pesimbi hydride uye hydrogen inotyisa kune nzira yekutora.Naizvozvo, tembiricha yemubhedha inokwira nekukurumidza nekuda kwenguva yekutanga apo hydrogen inotanga kuunzwa mu reactor.Tembiricha yemubhedha inowedzera kusvika yasvika pahukoshi hwepamusoro uye yozodzikira zvishoma nezvishoma sezvo kupisa kunotakurwa neinotonhodza, iyo ine tembiricha yakaderera uye inoita seanotonhodza.Sezvinoratidzwa mufig.4a, nekuda kwetsanangudzo yapfuura, kutonhora kweganda kunowedzera nokukurumidza uye kunoderera nguva dzose.Iyo hydrogen concentration yeabsorption process inowanzoenderana nekudziya kwemubhedha weMH reactor.Kana tembiricha yeavhareji yadzika kusvika kune imwe tembiricha, pamusoro pesimbi inotora hydrogen.Izvi zvinokonzerwa nekukurumidzira kwemaitiro e physisorption, chemisorption, kupararira kwehydrogen uye kuumbwa kwemahydrides ayo mu reactor.Kubva muonde.4b inogona kuonekwa kuti chiyero che hydrogen absorption muchiitiko 3 yakaderera pane dzimwe nguva nekuda kwediki danho kukosha kweiyo coil heat exchanger.Izvi zvinoguma nehurefu hwepombi hurefu uye nzvimbo yakakura yekutamisa kupisa kwepaipi dzeHTF.Neavhareji yehydrogen concentration ye90%, nguva yekunyura yeNyaya yekutanga i46,276 masekonzi.Kuenzaniswa nekureba kwekutora muchiitiko 1, nguva yekutora mumatambudziko 2 uye 3 yakaderedzwa ne 724 s uye 1263 s, maererano.Chikamu chekuwedzera chinopa tembiricha uye hydrogen contours yenzvimbo dzakasarudzwa muHCHE-MH layer.
Kufurira kwechinhambwe pakati pemakoiri paavhareji tembiricha yesadza uye hydrogen concentration.(a) Avhareji yetembiricha yemubhedha yehelical coils, (b) hydrogen concentration yehelical coils, (c) avhareji tembiricha yepamubhedha yehemi-cylindrical coils, uye (d) hydrogen concentration yehemi-cylindrical coils.
Kuti uvandudze maitiro ekutamisa kupisa kweMG reactor, maHFC maviri akagadzirirwa vhoriyamu isingaperi yeMG (2000 cm3) uye spiral heat exchanger (100 cm3) yeSarudzo 3. Ichi chikamu chinotarisawo mhedzisiro yedaro riri pakati pe coils ye 15 mm yekesi 4, 12.86 mm yekesi 5 uye 10 mm yenyaya 6. Mumuonde.4c, d inoratidza avhareji tembiricha yemubhedha uye kusungirirwa kweiyo hydrogen absorption process pane yekutanga tembiricha ye573 K uye kurodha kumanikidza kwe1.8 MPa.Zvinoenderana neavhareji tembiricha yekushisa muFig. 4c, diki diki pakati pemakoiri muchiitiko 6 inoderedza tembiricha zvakanyanya kana ichienzaniswa nemamwe maviri.Panyaya yechitanhatu, tembiricha yemubhedha yakaderera inoguma nepamusoro pehydrogen concentration (ona Fig. 4d).Iyo haidhirojeni yekutora nguva yeVariant 4 ndeye 19542 s, iyo inodarika ka2 yakaderera pane kune Variants 1-3 uchishandisa HCH.Mukuwedzera, kana ichienzaniswa nekesi 4, nguva yekutora yakaderedzwawo ne378 s uye 1515 s mumatambudziko 5 uye 6 ane madaro akaderera.Chikamu chekuwedzera chinopa tembiricha uye hydrogen contours yenzvimbo dzakasarudzwa muSCHE-MH layer.
Kuti udzidze mashandiro ezvigadziriso zviviri zvekupisa kupisa, chikamu ichi chinoronga uye chinopa tembiricha curves munzvimbo nhatu dzakasarudzwa.Iyo MH reactor ine HCHE kubva mukesi 3 yakasarudzwa kuti ienzaniswe neMH reactor ine SCHE muchiitiko 4 nokuti inogara MH volume uye pipe volume.Mamiriro ekushanda ekuenzanisa uku aive tembiricha yekutanga ye573 K uye kurodha kumanikidza kwe1.8 MPa.Pamusoro pemuonde.5a uye 5b inoratidza ese matatu akasarudzwa zvinzvimbo zvematembiricha profiles mumakesi 3 ne4, zvichiteerana.Pamusoro pemuonde.5c inoratidza chimiro chetembiricha uye dhizaini yekuisa mushure me20,000 s yehydrogen kutora.Zvinoenderana nemutsara wekutanga muFig. 5c, tembiricha yakatenderedza TTF kubva pane zvingasarudzwa 3 uye 4 inoderera nekuda kweiyo convective kupisa kuchinjika kweinotonhorera.Izvi zvinoguma nekuwanda kwehydrogen kutenderedza nzvimbo iyi.Zvisinei, kushandiswa kwemaSCHE maviri kunoguma nepamusoro-soro.Inokurumidza kinetic mhinduro dzakawanikwa dzakapoteredza HTF nzvimbo munyaya 4. Mukuwedzera, huwandu hwehuwandu hwe100% hwakawanikwawo munharaunda ino.Kubva mumutsara 2 uri pakati pe reactor, tembiricha yekesi 4 yakadzikira zvakanyanya pane tembiricha yekesi 3 munzvimbo dzese kunze kwepakati peiyo reactor.Izvi zvinoita kuti pave nehuwandu hwehydrogen yekese 4 kunze kwedunhu riri pedyo nepakati pe reactor kure neHTF.Zvisinei, kusungirirwa kwekesi 3 hakuna kuchinja zvakanyanya.Musiyano mukuru mukupisa uye kusungirirwa kweiyo layer yakaonekwa mumutsara 3 padyo nemusuwo weGTS.Tembiricha yedhiri muchiitiko 4 yakadzikira zvakanyanya, zvichikonzera kuwanda kweiyo hydrogen munzvimbo ino, nepo mutsara wekutarisa muchiitiko 3 ichiri kuchinjika.Izvi zvinokonzerwa nekukasira kweSCHE kupisa kupisa.Tsanangudzo uye nhaurirano yekuenzaniswa kweavhareji yekupisa kweMH layer uye HTF pombi pakati pekesi 3 uye kesi 4 inopiwa muchikamu chekuwedzera.
Tembiricha mbiri uye kusungirirwa kwemubhedha munzvimbo dzakasarudzwa musimbi hydride reactor.(a) Nzvimbo dzakasarudzwa dzekesi 3, (b) Nzvimbo dzakasarudzwa dzekesi 4, uye (c) Tembiricha mbiri uye dhizaini yekumisikidza munzvimbo dzakasarudzwa mushure me20,000 s yekutora hydrogen muzviitiko 3 uye 4.
Pamusoro pemuonde.Mufananidzo 6 unoratidza kuenzanisa kwevhareji yekushisa kwemubhedha (ona Fig. 6a) uye hydrogen concentration (ona Fig. 6b) yekutora HCH neSHE.Zvinogona kuonekwa kubva pamufananidzo uyu kuti kutonhora kweMG layer kunoderera zvakanyanya nekuda kwekuwedzera kwenzvimbo yekutsinhanisa kupisa.Kubvisa kupisa kwakawanda kubva kune reactor kunokonzeresa kuwedzera hydrogen kukwira mwero.Kunyangwe iwo maviri ekuchinjisa kupisa ane mavhoriyamu akafanana kana achienzaniswa nekushandisa HCHE seOption 3, SCHE's hydrogen yekutora nguva yakavakirwa paOption 4 yakaderedzwa zvakanyanya ne59%.Kuti uwane rumwe ruzivo rwakadzama, iyo hydrogen concentrations yezviviri zvekupisa exchanger configurations inoratidzwa seyoga muFigure 7. Ichi chifananidzo chinoratidza kuti muzviitiko zvose izvi, hydrogen inotanga kutorwa kubva pasi ichikomberedza HTF inlet.Mamiriro epamusoro akawanikwa munharaunda yeHTF, nepo kuderera kwakadzika kwakaonekwa pakati peMH reactor nekuda kwechinhambwe chayo kubva pakupisa kupisa.Mushure me 10,000 s, iyo hydrogen concentration muchiitiko 4 yakanyanya kukwirira kupfuura muchiitiko 3. Mushure memasekondi 20,000, muvhareji wehydrogen concentration mu reactor yakakwira kusvika 90% kana 4 ichienzaniswa ne50% hydrogen muchiitiko 3. Izvi zvinogona kunge zvakakonzerwa kune yakakwirira inoshanda yekutonhodza kugona kwekubatanidza maSCHE maviri, zvichikonzera kuderera kwekushisa mukati meMH layer.Nekuda kweizvozvo, kuwedzera kuenzana kudzvanywa kunowira mukati meMG layer, izvo zvinotungamira kune nekukurumidza kunyudzwa kwehydrogen.
Case 3 uye Nyaya 4 Kuenzanisa kweavhareji tembiricha yemubhedha uye hydrogen concentration pakati pemaviri ekupisa ekuchinjisa masisitimu.
Kuenzanisa kweiyo hydrogen concentration mushure me500, 2000, 5000, 10000 uye 20000 s mushure mekutanga kweiyo hydrogen absorption process mune kesi 3 uye kesi 4.
Tafura 5 inopfupikisa nguva yekutora hydrogen kune ese kesi.Mukuwedzera, tafura inoratidzawo nguva yekutorwa kwehydrogen, inoratidzwa sezana.Ichi chikamu chinotarwa zvichienderana nenguva yekutorwa kweNyaya 1. Kubva patafura iyi, nguva yekutorwa kweMH reactor inoshandisa HCHE inenge 45,000 kusvika 46,000 s, uye nguva yekutora inosanganisira SCHE inenge 18,000 kusvika 19,000 s.Kuenzaniswa neNyaya 1, nguva yekunyura muNyaya 2 uye Nyaya 3 yakaderedzwa ne1.6% chete uye 2.7%, zvichiteerana.Paunenge uchishandisa SCHE panzvimbo yeHCHE, nguva yekunyura yakaderedzwa zvakanyanya kubva pachiitiko 4 kuenda ku6, kubva ku58% kusvika 61%.Zviri pachena kuti kuwedzerwa kweSCHE kuMH reactor kunovandudza zvikuru nzira ye hydrogen absorption uye kushanda kweMH reactor.Kunyange zvazvo kuiswa kwekupisa kupisa mukati meMH reactor kunoderedza simba rekuchengetedza, iyi teknolojia inopa hukuru hunovandudza mukupisa kwekushisa kuenzaniswa nemamwe matekinoroji.Zvakare, kudzikisa kukosha kwepitch kunowedzera huwandu hweSCHE, zvichikonzera kudzikira kwehuwandu hweMH.Muchiitiko 6 nepamusoro-soro SCHE vhoriyamu, iyo MH volumetric simba yakangoderedzwa ne5% kana ichienzaniswa nekesi 1 ine yakaderera HCHE vhoriyamu.Mukuwedzera, panguva yekutora, nyaya 6 yakaratidza kukurumidza uye kushanda zviri nani ne 61% kuderedza munguva yekutora.Naizvozvo nyaya yechitanhatu yakasarudzwa kuti iwedzere kuferefetwa mukuongorora kwekunzwa.Izvo zvinofanirwa kucherechedzwa kuti iyo yakareba hydrogen inotora nguva inosanganiswa netangi yekuchengetedza ine huwandu hweMH hunosvika 2000 cm3.
Maitiro ekushanda panguva yekupindura zvinhu zvinokosha zvinokanganisa kana kuti zvinokanganisa kushanda kweMH reactor pasi pemamiriro chaiwo.Ichi chidzidzo chinotarisa kuongorora kwekunzwa kuti uone zvakakodzera maitiro ekutanga ekushanda kweMH reactor pamwe chete neSCHE, uye chikamu ichi chinoongorora maitiro mana makuru ekushanda zvichienderana nekugadzirisa kwekugadzirisa kwekugadzirisa mumamiriro ezvinhu 6. Migumisiro yemamiriro ose ekushanda anoratidzwa mu Mufananidzo 8.
Girafu yeHydrogen concentration pasi pemamiriro akasiyana-siyana ekushanda paunenge uchishandisa kupisa kunopisa ne semi-cylindrical coil.(a) kurodha kumanikidza, (b) tembiricha yekutanga yemubhedha, (c) inotonhorera Reynolds nhamba, uye (d) inotonhorera inlet tembiricha.
Zvichienderana netembiricha yenguva dzose ye573 K uye kuyerera kweinotonhorera ine nhamba yeReynolds ye14,000, mana akasiyana ekurodha akasarudzwa: 1.2 MPa, 1.8 MPa, 2.4 MPa, uye 3.0 MPa.Pamusoro pemuonde.8a inoratidza mhedzisiro yekurodha kumanikidza uye SCHE pane hydrogen concentration nekufamba kwenguva.Nguva yekutora inodzikira nekuwedzera kurodha kumanikidza.Kushandisa yakashandiswa hydrogen pressure ye 1.2 MPa ndiyo yakaipisisa nyaya yehydrogen absorption process, uye nguva yekutora inodarika 26,000 s kuwana 90% hydrogen absorption.Nekudaro, iyo yakanyanya kurodha yekumanikidza yakakonzera kuderera kwe 32-42% munguva yekutora kubva 1.8 kusvika 3.0 MPa.Izvi zvinokonzerwa nepamusoro pekutanga kudzvinyirirwa kwehydrogen, izvo zvinoguma nemusiyano mukuru pakati pekuenzana kwekuenzanisa uye kushandiswa kwekushandiswa.Naizvozvo, izvi zvinogadzira simba rakakura rekutyaira kune iyo hydrogen inotora kinetics.Panguva yekutanga, hydrogen gasi inokurumidza kunyura nekuda kwemusiyano mukuru pakati peiyo equilibrium pressure uye inoshandiswa pressure57.Pakumanikidza kurodha kwe3.0 MPa, 18% hydrogen yakakurumidza kuunganidzwa mukati memasekondi gumi ekutanga.Hydrogen yakachengetwa mu90% yemareactor padanho rekupedzisira re15460 s.Zvisinei, pakuremerwa kwe1.2 kusvika ku1.8 MPa, nguva yekutora yakaderedzwa zvakanyanya ne32%.Mamwe madzvinyiriro akakwira aive nemhedzisiro shoma pakuvandudza nguva dzekunyura.Naizvozvo, zvinokurudzirwa kuti kurodha kumanikidza kweMH-SCHE reactor kuve 1.8 MPa.Chikamu chekuwedzera chinoratidza iyo hydrogen contours yeakasiyana ekurodha madzvinyiriro pa15500 s.
Kusarudzwa kweyakakodzera yekutanga tembiricha yeMH reactor ndechimwe chezvinhu zvakakosha zvinokanganisa hydrogen adsorption process, sezvo inokanganisa kutyaira kweiyo hydride formation reaction.Kuti udzidze mhedzisiro yeSCHE pane yekutanga tembiricha yeMH reactor, tembiricha ina dzakasiyana dzakasarudzwa pakugara kurodha kumanikidza kwe1.8 MPa uye nhamba yeReynolds ye14,000 HTF.Pamusoro pemuonde.Mufananidzo 8b unoratidza kuenzanisa kwekushisa kwekutanga kwakasiyana, kusanganisira 473K, 523K, 573K, uye 623K.Muchokwadi, kana tembiricha yakakwira kupfuura 230 ° C kana 503K58, iyo Mg2Ni alloy ine maitiro anoshanda eiyo hydrogen absorption process.Nekudaro, panguva yekutanga jekiseni rehydrogen, tembiricha inokwira nekukurumidza.Nokudaro, kutonhora kweMG layer kuchapfuura 523 K. Nokudaro, kuumbwa kwema hydrides kunogadziriswa nekuda kwekuwedzera kwekutora53.Kubva muonde.Inogona kuonekwa kubva mumufananidzo 8b kuti hydrogen inotorwa nekukurumidza sezvo tembiricha yekutanga yeMB layer inoderera.Lower equilibrium pressures inoitika kana tembiricha yekutanga yadzikira.Iyo yakakura mutsauko wekumanikidza pakati peequilibrium pressure uye kudzvanywa kwekushandiswa, ndiko kukurumidza kwekuita kwehydrogen absorption.Pakupisa kwekutanga kwe473 K, haidrojeni inokurumidza kutorwa kusvika 27% mukati memasekonzi gumi nemasere ekutanga.Mukuwedzera, nguva yekunyura yakaderedzwawo kubva ku11% kusvika ku24% pane yakaderera yekutanga tembiricha kana ichienzaniswa neyekutanga tembiricha ye623 K. Nguva yekunyura panguva yakaderera yekutanga tembiricha ye473 K ndeye 15247 s, iyo yakafanana neyakanakisa. kesi kurodha kumanikidza, zvisinei, kuderera kwekutanga tembiricha reactor tembiricha kunotungamirira kudzikira kwehydrogen kuchengetedza kugona.Kupisa kwekutanga kweMN reactor kunofanirwa kunge kuri 503 K53.Mukuwedzera, pakupisa kwekutanga kwe573 K53, huwandu hwekuchengetedza hydrogen hwe3.6 wt% hunogona kuwanikwa.Panyaya yekuchengetera hydrogen uye nguva yekunyura, tembiricha iri pakati pe523 ne573 K inopfupisa nguva ne6% chete.Nokudaro, kutonhora kwe573 K kunotsanangurwa sekushisa kwekutanga kweMH-SCHE reactor.Nekudaro, mhedzisiro yekushisa kwekutanga pakuita kwekunyura kwaive kushoma kana ichienzaniswa nekudzvanywa kwekurodha.Chikamu chekuwedzera chinoratidza macontours eiyo hydrogen concentration kune akasiyana ekutanga tembiricha pa15500 s.
Chiyero chekuyerera ndicho chimwe chezvinhu zvakakosha zvehydrogenation uye dehydrogenation nekuti inogona kukanganisa mhirizhonga uye kubvisa kupisa kana kuisa panguva yehydrogenation uye dehydrogenation59.Kuyerera kwemazinga epamusoro kuchagadzira nhanho dzenhanho uye zvinokonzeresa nekukurumidza kuyerera kwemvura kuburikidza neHTF tubing.Kuita uku kuchaita kuti kukurumidza kutamisa kupisa.Makumidhi ekupinda akasiyana eHTF anoverengerwa zvichienderana nenhamba dzeReynolds dze10,000, 14,000, 18,000, ne22,000.Iyo yekutanga tembiricha yeMG layer yakagadziriswa pa573 K uye yekurodha kumanikidza pa1.8 MPa.Mhedzisiro yacho mufig.8c inoratidza kuti kushandisa nhamba yepamusoro yeReynolds pamwe chete neSCHE kunoguma nemwero wepamusoro wekutora.Sezvo nhamba yeReynolds inowedzera kubva pa10,000 kusvika pa22,000, nguva yekutora inoderera ne28-50%.Nguva yekutora paReynolds nhamba ye22,000 i12,505 masekonzi, ari mashoma pane akasiyana ekutanga kurodha tembiricha uye kumanikidza.Hydrogen contours contours yeakasiyana maReynolds manhamba eGTP pa12500 s anoratidzwa muchikamu chekuwedzera.
Mhedzisiro yeSCHE pakushisa kwekutanga kweHTF inoongororwa uye inoratidzwa mumufananidzo 8d.Pakutanga MG tembiricha ye573 K uye hydrogen loading pressure ye1.8 MPa, tembiricha ina dzekutanga dzakasarudzwa pakuongorora uku: 373 K, 473 K, 523 K, uye 573 K. 8d inoratidza kudzikira kwekupisa kweinotonhorera. painopinza inotungamirira mukuderedzwa kwenguva yekunyura.Zvichienzaniswa nebhesi kesi ine tembiricha yekupinza ye573 K, nguva yekunyura yakaderedzwa neinosvika 20%, 44% uye 56% yekupisa kwemukati kwe523 K, 473 K uye 373 K, zvichiteerana.Pa 6917 s, tembiricha yekutanga yeGTF i373 K, iyo hydrogen concentration mureactor i90%.Izvi zvinogona kutsanangurwa nekunatsiridza convective kupisa kwekufambisa pakati peMG layer neHCS.Kudzika kweHTF tembiricha kuchawedzera kupisa kupisa uye kunokonzeresa kuwedzera kutorwa kwehydrogen.Pakati pese maitiro ekushanda, kuvandudza kushanda kweMH-SCHE reactor nekuwedzera kupisa kweHTF inlet ndiyo yakanyatsokodzera nzira, sezvo nguva yekupedzisira yekunyura yakanga iri pasi pe7000 s, nepo nguva shoma yekutora dzimwe nzira yakanga yakawanda. kupfuura 10000 s.Hydrogen contours contours inounzwa kune akasiyana ekutanga tembiricha yeGTP ye7000 s.
Ichi chidzidzo chinopa kekutanga nyowani semi-cylindrical coil heat exchanger yakabatanidzwa musimbi hydride yekuchengetedza unit.Kugona kweiyo yakarongwa sisitimu yekutora haidrojeni yakaongororwa neyakasiyana-siyana magadzirirwo eanopisa kupisa.Kurudziro yemaparamendi ekushanda pakuchinjana kwekupisa pakati pesimbi hydride layer uye inotonhorera yakaferefetwa kuitira kuti iwane mamiriro akakwana ekuchengetedza simbi hydrides uchishandisa kupisa kutsva.Zvikuru zvakawanikwa pachidzidzo ichi zvinopfupikiswa sezvizvi:
Iine semi-cylindrical coil heat exchanger, kupisa kwekushisa kunovandudzwa nekuti ine yakawedzera yunifomu yekugovera kupisa mu magnesium layer reactor, zvichiita kuti hydrogen inyunzwe mwero uri nani.Zvichipa kuti vhoriyamu yekutsinhana kupisa chubhu uye simbi hydride inoramba isina kuchinjika, iyo absorption reaction nguva inoderedzwa zvakanyanya ne59% kana ichienzaniswa neyakajairwa coil heat exchanger.
Nguva yekutumira: Jan-15-2023