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A na-amata hydrides metal (MH) dị ka otu n'ime otu ihe kachasị mma maka nchekwa hydrogen n'ihi nnukwu nchekwa nchekwa hydrogen, nrụgide dị ala na nchekwa dị elu.Otú ọ dị, kinetics ha na-eku ume hydrogen na-ebelata ọrụ nchekwa nke ukwuu.Mwepụ ọkụ ngwa ngwa site na nchekwa MH nwere ike ịrụ ọrụ dị mkpa n'ịba ụba ọnụego hydrogen ya, na-eme ka ọrụ nchekwa dịkwuo mma.N'akụkụ a, ọmụmụ ihe a bụ iji melite njirimara nnyefe ọkụ iji mee ka ọ dị mma na-emetụta ọnụọgụ hydrogen nke usoro nchekwa MH.Ebu ụzọ mepụta eriri igwe nke ọkara cylindrical ọhụrụ ma hazie ya maka nchekwa hydrogen wee tinye ya dị ka ihe mgbanwe ikuku dị ka okpomọkụ (HTF).Dabere na nha ọkwa dị iche iche, a na-enyocha mmetụta nke nhazi mgbanwe okpomọkụ ọhụrụ ma jiri ya na geometry eriri igwe helical.Na mgbakwunye, a na-enyocha usoro ọrụ nke nchekwa MG na GTP ọnụ ọgụgụ iji nweta ụkpụrụ kacha mma.Maka ịme anwansị ọnụọgụ, ANSYS Fluent 2020 R2 na-eji.Nsonaazụ nke ọmụmụ a na-egosi na arụmọrụ nke tank nchekwa MH nwere ike ime ka ọ dịkwuo mma site na iji ihe na-ekpo ọkụ na-ekpo ọkụ nke ọkara-cylindrical (SCHE).E jiri ya tụnyere ndị na-agbanwe ikpo ọkụ na-ekpo ọkụ, ogologo oge nke mmịnye hydrogen na-ebelata site na 59%.Ebe kacha nta n'etiti mkpuchi SCHE butere mbelata 61% na oge nnabata.N'ihe gbasara usoro ọrụ nke nchekwa MG na-eji SHE, ihe niile ahọpụtara na-eduga na mmụba dị ịrịba ama na usoro mmịpụta hydrogen, karịsịa okpomọkụ na ntinye na HTS.
Enwere mgbanwe zuru ụwa ọnụ site na ike dabere na mmanụ ọkụ ọkụ gaa na ume ọhụrụ.N'ihi na ọtụtụ ụdị nke ume ọhụrụ na-enye ike n'ụzọ dị egwu, nchekwa ike dị mkpa iji dozie ibu ahụ.Nchekwa ike nke dabeere na hydrogen adọtala ọtụtụ nlebara anya maka nzube a, karịsịa n'ihi na hydrogen nwere ike iji mee ihe dị ka "acha akwụkwọ ndụ akwụkwọ ndụ" mmanụ ọzọ na-ebu ume n'ihi ihe onwunwe ya na obere ibu.Na mgbakwunye, hydrogen na-enyekwa ọdịnaya ume dị elu n'otu nkeji ma e jiri ya tụnyere mmanụ ọkụ2.Enwere ụdị anọ bụ isi nke nchekwa ike hydrogen: nchekwa gas abịakọrọ, nchekwa ala, nchekwa mmiri mmiri, na nchekwa siri ike.Hydrogen agbakwunyere bụ ụdị bụ isi a na-eji n'ime ụgbọ ala mmanụ ụgbọala dị ka bọs na forklift.Otú ọ dị, nchekwa a na-enye obere njupụta hydrogen (ihe dị ka 0.089 kg / m3) ma nwee nsogbu nchekwa jikọtara ya na nrụgide ọrụ dị elu3.Dabere na usoro ntụgharị na obere okpomọkụ na nrụgide, nchekwa mmiri ga-echekwa hydrogen n'ụdị mmiri mmiri.Otú ọ dị, mgbe mmiri ọṅụṅụ, ihe dị ka 40% nke ume na-efunahụ.Tụkwasị na nke a, a maara nkà na ụzụ a ka ọ na-esiwanye ike ma na-arụsi ọrụ ike ma e jiri ya tụnyere teknụzụ nchekwa steeti siri ike4.Nchekwa siri ike bụ nhọrọ dị mma maka akụ na ụba hydrogen, nke na-echekwa hydrogen site na itinye hydrogen n'ime ihe siri ike site na ntinye na ịtọhapụ hydrogen site na nsị.Metal hydride (MH), teknụzụ nchekwa ihe siri ike, bụ mmasị na nso nso a na ngwa mmanụ ọkụ n'ihi ikike hydrogen dị elu, nrụgide na-arụ ọrụ dị ala, yana ọnụ ala dị ala ma e jiri ya tụnyere nchekwa mmiri mmiri, ọ dabara adaba maka ngwa ngwa na ngwa mkpanaka6,7 In. mgbakwunye, ihe MH na-enyekwa ihe nchekwa dị ka nchekwa nchekwa nke ọma nke nnukwu ikike8.Otú ọ dị, e nwere nsogbu na-egbochi mmepụta nke MG: ala thermal conductivity nke MG reactor na-eduga ngwa ngwa absorption na desorption nke hydrogen.
Nfefe ọkụ kwesịrị ekwesị n'oge mmeghachi omume exothermic na endothermic bụ isi ihe na-eme ka arụmọrụ nke MH reactors dịkwuo mma.Maka usoro ntinye nke hydrogen, a ghaghị iwepụ okpomọkụ na-emepụta site na reactor iji chịkwaa mmiri na-ebu hydrogen na ọnụego achọrọ na ikike nchekwa kachasị.Kama nke ahụ, a chọrọ okpomọkụ iji mee ka ọnụọgụ evolushọn hydrogen dịkwuo elu n'oge mwepu.Iji mee ka ọkụ na-arụ ọrụ na-enyefe ọkụ na oke ibu, ọtụtụ ndị na-eme nchọpụta amụwo nhazi na njikarịcha dabere na ọtụtụ ihe dị ka usoro ọrụ, nhazi MG, na MG11 njikarịcha.Enwere ike ime njikarịcha MG site n'ịgbakwunye ihe ndị na-eme ka ọkụ dị elu dị ka ọla ụfụfụ na ọkwa MG 12,13.Ya mere, enwere ike ịbawanye arụmọrụ thermal dị irè site na 0.1 ruo 2 W / mK10.Otú ọ dị, mgbakwunye nke ihe siri ike na-ebelata ike nke MN reactor.N'ihe gbasara paramita arụ ọrụ, enwere ike nweta nkwalite site n'ịkwalite ọnọdụ ọrụ mbụ nke oyi akwa MG na coolant (HTF).Enwere ike imezi ihe owuwu nke MG n'ihi geometry nke reactor na imewe nke ikpo ọkụ.Banyere nhazi nke MH reactor heat exchanger, enwere ike kewaa ụzọ abụọ.Ndị a bụ ihe ndị na-ekpo ọkụ n'ime ime nke e wuru n'ime oyi akwa MO na ndị na-ekpo ọkụ na-ekpo ọkụ n'èzí na-ekpuchi oyi akwa MO dị ka ntù, mkpuchi oyi na mmiri ịsa ahụ.N'ihe gbasara onye na-ekpo ọkụ n'èzí, Kaplan16 nyochara ọrụ nke MH reactor, na-eji mmiri jụrụ oyi dị ka jaket iji belata okpomọkụ n'ime reactor.Atụnyere nsonaazụ ya na reactor 22 gburugburu na reactor ọzọ jụrụ site na convection eke.Ha na-ekwu na ọnụnọ nke jaket jụrụ oyi na-ebelata nke ukwuu okpomọkụ nke MH, si otú ahụ na-amụba ọnụ ọgụgụ absorption.Ọmụmụ ọnụọgụgụ nke onye na-ahụ maka mmiri MH nke Patil na Gopal17 gosipụtara na nrụgide na-enye hydrogen na okpomọkụ HTF bụ ihe ndị dị mkpa na-emetụta ọnụ ọgụgụ nke ikuku hydrogen na desorption.
Ịbawanye ebe a na-ebufe ọkụ site n'ịgbakwụnye ntù na ndị na-ekpo ọkụ na-ekpo ọkụ nke e wuru n'ime MH bụ isi ihe na-eme ka ọkụ na-arụ ọrụ na-ebufe oke na ya mere ọrụ nchekwa nke MH18.Ọtụtụ nhazi mgbanwe okpomọkụ dị n'ime (tube kwụ ọtọ na eriri gburugburu) ka emebere ka ọ kesaa coolant na MH19,20,21,22,23,24,25,26 reactor.N'iji ihe ngbanwe okpomọkụ dị n'ime, mmiri jụrụ oyi ma ọ bụ kpo oku ga-ebufe okpomọkụ mpaghara n'ime MH reactor n'oge usoro mgbasa ozi hydrogen.Raju na Kumar [27] jiri ọtụtụ ọkpọkọ kwụ ọtọ dị ka ndị na-agbanwe ọkụ iji melite arụmọrụ MG.Nsonaazụ ha gosiri na oge nnabata na-ebelata mgbe a na-eji tubes kwụ ọtọ dị ka ndị na-ekpo ọkụ.Na mgbakwunye, iji tubes kwụ ọtọ na-ebelata oge mkpochapụ hydrogen28.Ọnụego mmiri oyi dị elu na-abawanye ọnụego nke ịchaji na ịwụsa hydrogen29.Otú ọ dị, ịba ụba nke tubes jụrụ oyi na-enwe mmetụta dị mma na arụmọrụ MH kama ịdị na-agba ọsọ coolant30,31.Raju et al.32 jiri LaMi4.7Al0.3 mee ihe dị ka ihe MH iji mụọ ọrụ nke multitube okpomọkụ mgbanwe na reactors.Ha kọrọ na paramita ndị na-arụ ọrụ nwere mmetụta dị ịrịba ama na usoro ntinye, karịsịa nrụgide nri na mgbe ahụ na-agba ọsọ nke HTF.Otú ọ dị, ọ̀tụ̀tụ̀tụ̀ ikpo ọkụ ahụ bịara bụrụ nke na-adịchaghị mkpa.
A na-eme ka arụmọrụ nke MH reactor dịkwuo mma site n'iji igwe na-ekpo ọkụ na-ekpo ọkụ na-ekpo ọkụ n'ihi na ọ na-eme ka ọ dịkwuo ọkụ ma e jiri ya tụnyere tubes kwụ ọtọ.Nke a bụ n'ihi na nke abụọ okirikiri nwere ike mma wepụ okpomọkụ si reactor25.Tụkwasị na nke ahụ, tubes spiral na-enye nnukwu ebe dị elu maka ịnyefe okpomọkụ site na MH oyi akwa na coolant.Mgbe usoro a ewebata n'ime reactor, nkesa nke okpomọkụ mgbanwe tube bụkwa ihe uniform33.Wang et al.34 mụrụ mmetụta nke oge iwere hydrogen site n'ịgbakwunye eriri helical na reactor MH.Nsonaazụ ha na-egosi na ka ọnụọgụ nnyefe ọkụ nke coolant na-abawanye, oge nnabata na-ebelata.Wu et al.25 nyochara arụmọrụ nke MH reactors dabere na Mg2Ni yana ndị na-agbanwe ọkụ igwe kpokọtara.Ọmụmụ ọnụọgụgụ ha egosila mbelata oge mmeghachi omume.Ọganihu nke usoro mbufe okpomọkụ dị na MN reactor gbadoro ụkwụ na nrụrụ nta nke screw pitch na screw pitch na enweghị akụkụ.Nnyocha nyocha nke Mellouli et al.21 na-eji eriri mkpuchi mkpuchi dị ka onye na-ekpo ọkụ n'ime ụlọ gosipụtara na mmalite okpomọkụ HTF nwere mmetụta dị ukwuu n'ịkwalite oge nkwụsị hydrogen na oge nkwụsị.A na-emekọrịta ihe dị iche iche na-ekpo ọkụ n'ime ime n'ọtụtụ ọmụmụ.Eisapur et al.35 mụrụ nchekwa hydrogen site na iji igwe na-ekpo ọkụ na-ekpo ọkụ na-ekpo ọkụ nke nwere eriri nkwụghachi etiti iji meziwanye usoro mmịkọ hydrogen.Nsonaazụ ha gosiri na spiral tube na Central nloghachi tube na-eme ka nnyefe ọkụ dị n'etiti coolant na MG.Obere pitch na dayameta buru ibu nke spiral tube na-abawanye ọnụego okpomọkụ na nnyefe oke.Ardahaie et al.36 jiri tubes spiral dị larịị dị ka ndị na-agbanwe ọkụ iji kwalite mbufe okpomọkụ n'ime reactor.Ha kwuru na oge nnabata ahụ belatara site n'ịbawanye ọnụ ọgụgụ ụgbọ elu spiral tube gbawara agbawa.A na-emekọrịta ihe dị iche iche na-ekpo ọkụ n'ime ime n'ọtụtụ ọmụmụ.Dhau et al.37 kwalitere arụmọrụ nke MH site na iji igwe mgbanwe okpomọkụ na ntù.Nsonaazụ ha na-egosi na usoro a na-ebelata oge ndochi hydrogen site na nkeji 2 ma e jiri ya tụnyere ikpe na-enweghị ntù.A na-ejikọta nku afọ anular na tubes jụrụ oyi ma wuo ya n'ime ihe nrụpụta MN.Nsonaazụ nke ọmụmụ a na-egosi na usoro a jikọtara ọnụ na-enye ọtụtụ nnyefe okpomọkụ otu ma e jiri ya tụnyere MH reactor na-enweghị ntù.Otú ọ dị, ijikọta ndị na-ekpo ọkụ dị iche iche ga-emetụta ịdị arọ na olu nke MH reactor.Wu et al.18 tụnyere nhazi mgbanwe okpomọkụ dị iche iche.Ndị a gụnyere ọkpọkọ kwụ ọtọ, ntù na eriri gburugburu.Ndị na-ede akwụkwọ na-akọ na mkpuchi mkpuchi na-enye nkwalite kachasị mma na okpomọkụ na nnyefe oke.Tụkwasị na nke ahụ, e jiri ya tụnyere tubes kwụ ọtọ, ọkpọkọ ọkpọkọ, na tubes kwụ ọtọ jikọtara ya na ọkpọkọ ọkpọkọ, eriri abụọ na-enwe mmetụta dị mma n'ịkwalite nnyefe ọkụ.Ọmụmụ Sekhar et al.40 gosiri na a nweta nkwalite yiri nke ahụ na nnabata hydrogen site na iji eriri igwe gburugburu dị ka ihe na-ekpo ọkụ n'ime ime na jaket na-ekpo ọkụ dị n'èzí.
N'ime ihe atụ ndị a kpọtụrụ aha n'elu, iji eriri gburugburu dị ka ndị na-ekpo ọkụ dị n'ime ya na-enye mma ọkụ na nfefe oke karịa ndị ọzọ na-ekpo ọkụ, karịsịa tubes na ntù kwụ ọtọ.Ya mere, ebumnobi nke ọmụmụ ihe a bụ iji mepewanye eriri gburugburu iji kwalite ọrụ nnyefe okpomọkụ.Maka oge mbụ, e mepụtala eriri igwe nke ọkara cylindrical ọhụrụ dabere na igwe nchekwa helical MH.A na-atụ anya na ọmụmụ ihe a ga-eme ka arụmọrụ nchekwa hydrogen dịkwuo mma site n'ịtụle ihe ọhụrụ nke na-eme ka okpomọkụ na-ekpo ọkụ na-eme ka ọ dịkwuo mma na-enye ya site na ụda MH bed na tubes HTF mgbe niile.Atụle ọrụ nchekwa nke ihe ngbanwe ọkụ ọhụrụ a ka ọ dị ka ndị na-agbanwe okpomoku na-ekpo ọkụ na-agbakọ agbadoro n'okirikiri dị iche iche.Dị ka akwụkwọ ndị dị ugbu a si kwuo, ọnọdụ ọrụ na oghere nke mkpuchi bụ isi ihe na-emetụta arụmọrụ nke MH reactors.Iji kwalite nhazi nke ihe ngbanwe ọkụ ọhụrụ a, a nyochara mmetụta nke spacing coil na oge iwere hydrogen na olu MH.Na mgbakwunye, iji ghọta mmekọrịta dị n'etiti coils hemi-cylindrical ọhụrụ na ọnọdụ arụ ọrụ, ebumnuche nke abụọ nke ọmụmụ a bụ ịmụpụta njirimara nke reactor dị ka usoro oke ọrụ dị iche iche si dị ma chọpụta ụkpụrụ kwesịrị ekwesị maka ọrụ ọ bụla. ọnọdụ.oke.
A na-enyocha arụmọrụ nke ngwaọrụ nchekwa ike hydrogen n'ime ọmụmụ ihe a dabere na nhazi mgbanwe okpomọkụ abụọ (gụnyere spiral tubes na ikpe 1 ruo 3 na tubes semi-cylindrical na ikpe 4 ruo 6) na nyocha uche nke paramita arụ ọrụ.A nwalere arụmọrụ nke MH reactor maka oge mbụ site na iji tube spiral dị ka ihe na-ekpo ọkụ.Ma ọkpọkọ mmanụ coolant na ụgbọ mmiri MH bụ nke igwe anaghị agba nchara.Ekwesiri iburu n'uche na akụkụ nke MG reactor na dayameta nke ọkpọkọ GTF na-adịgide adịgide n'ọnọdụ niile, ebe ọkwa nke GTF dị iche iche.Akụkụ a na-enyocha mmetụta nke nha pit nke eriri igwe HTF.The elu na elu dayameta nke reactor bụ 110 mm na 156 mm, n'otu n'otu.A na-edozi dayameta nke ọkpọkọ mmanụ ọkụ na-ekpo ọkụ na 6mm.Lee ngalaba mgbakwunye maka nkọwapụta na eserese sekit reactor MH nwere tubes gburugburu na tubes abụọ nke ọkara cylindrical.
Na fig.1a na-egosi MH spiral tube reactor na akụkụ ya.Enyere parampat geometric niile na tebụl.1. Mkpokọta olu nke helix na olu nke ZG bụ ihe dịka 100 cm3 na 2000 cm3, n'otu n'otu.Site na reactor MH a, a na-enye ikuku dị n'ụdị HTF n'ime ebe a na-ahụ maka ikuku MH dị n'okpuru site na tube na-agba gburugburu, na e si na elu elu nke reactor webata hydrogen.
Njiri mara geometry ahọpụtara maka igwe hydride reactors.a) ya na ihe na-ekpo ọkụ na-ekpo ọkụ gburugburu-tubular, b) na ihe na-ekpo ọkụ na-ekpo ọkụ nke ọkara-cylindrical.
Akụkụ nke abụọ na-enyocha ọrụ nke MH reactor dabere na tube nke ọkara cylindrical dị ka ihe na-ekpo ọkụ.Na fig.1b na-egosi reactor MN nwere tube abụọ nke ọkara cylindrical na akụkụ ha.Isiokwu 1 depụtara ihe niile geometric parameters nke ọkara cylindrical ọkpọkọ, nke na-adịgide adịgide, ewezuga ebe dị anya n'etiti ha.Ekwesiri iburu n'uche na a na-emepụta tube nke ọkara-cylindrical na Case 4 na ụda HTF mgbe niile na MH alloy n'ime tube a na-agbanye (nhọrọ 3).Banyere fig.1b, ewebatakwa ikuku site na ala nke tubes HTF abụọ nke ọkara cylindrical, na ewebata hydrogen site na ntụgharị ihu nke MH reactor.
N'ihi nhazi ọhụrụ nke onye na-ekpo ọkụ ọkụ, ebumnuche nke ngalaba a bụ iji chọpụta ụkpụrụ mmalite kwesịrị ekwesị maka usoro ọrụ nke MH reactor yana SCHE.N'ọnọdụ niile, a na-eji ikuku dị ka ihe na-ekpo ọkụ iji wepụ okpomọkụ na reactor.N'ime mmanụ na-ebufe ọkụ, ikuku na mmiri na-ahọrọkarị dị ka mmanụ na-enye ọkụ maka ndị na-emepụta MH n'ihi ọnụ ala ha na obere mmetụta gburugburu ebe obibi.N'ihi oke okpomọkụ na-arụ ọrụ nke alloys dabere na magnesium, a họọrọ ikuku dị ka ihe na-ekpo ọkụ n'ọmụmụ ihe a.Na mgbakwunye, ọ nwekwara njirimara mgbaba dị mma karịa ọla mmiri mmiri ndị ọzọ na nnu gbazere41.Tebụl 2 depụtara njirimara nke ikuku na 573 K. Maka nyocha nke uche na ngalaba a, naanị nhazi kachasị mma nke nhọrọ arụmọrụ MH-SCHE (n'ọnọdụ 4 ruo 6) na-etinyere ya.Atụmatụ ndị dị na ngalaba a gbadoro ụkwụ na usoro ọrụ dị iche iche, gụnyere okpomọkụ mbụ nke MH reactor, nrụgide nrụnye hydrogen, okpomọkụ ntinye HTF, na nọmba Reynolds gbakọrọ site n'ịgbanwe ọnụego HTF.Tebụl 3 nwere paramita niile arụ ọrụ ejiri maka nyocha uche.
Nkebi a na-akọwa ihe niile dị mkpa njikwa akara maka usoro nke hydrogen absorption, ọgba aghara na okpomọkụ nyefe nke coolants.
Iji mee ka ihe ngwọta nke mmeghachi omume nke hydrogen na-eme ka ọ dị mfe, a na-eme ma na-enye echiche ndị a;
N'oge absorption, thermophysical Njirimara nke hydrogen na metal hydrides na-adịgide adịgide.
A na-ele hydrogen anya dị ka ezigbo gas, yabụ, a na-eburu n'uche ọnọdụ nha ọkụ mpaghara43,44.
ebe \({L}_{gas}\) bụ radius nke tank, na \({L}_{heat}\) bụ axial elu nke tank.Mgbe N bụ ihe na-erughị 0.0146, a pụrụ ileghara mmiri hydrogen na tank na simulation na-enweghị nnukwu njehie.Dị ka nyocha ugbu a, N dị ala karịa 0.1.Ya mere, enwere ike ileghara mmetụta gradient nrụgide anya.
A na-ekpuchi mgbidi reactor nke ọma n'ọnọdụ niile.Ya mere, ọ dịghị okpomọkụ mgbanwe 47 n'etiti reactor na gburugburu ebe obibi.
A maara nke ọma na alloys dabeere na Mg nwere àgwà hydrogenation dị mma yana ikike nchekwa hydrogen dị elu ruo 7.6 wt% 8.N'ihe gbasara ngwa nchekwa hydrogen steeti siri ike, a na-akpọkwa alloys ndị a dị ka ihe dị arọ.Na mgbakwunye, ha nwere oke okpomọkụ na-eguzogide na ezi usoro8.N'ime ọtụtụ alloy dabeere na Mg, Mg2Ni dabeere na MgNi alloy bụ otu n'ime nhọrọ kachasị mma maka nchekwa MH n'ihi ikike nchekwa hydrogen ya ruru 6 wt%.Mg2Ni alloys na-enyekwa ngwa ngwa mgbasa ozi na desorption kinetics tụnyere MgH48 alloy.Ya mere, a họọrọ Mg2Ni dị ka metal hydride ihe na ọmụmụ a.
A na-egosipụta nha ike dị ka 25 dabere na nguzo ọkụ dị n'etiti hydrogen na Mg2Ni hydride:
X bụ ọnụọgụ hydrogen etinyere n'elu igwe, unit ahụ bụ \ (arọ%\), gbakọọ site na nha nhata kinetic \ (\frac{dX}{dt}\) n'oge nnabata dị ka ndị a49:
ebe \({C}_{a}\) bụ ọnụego mmeghachi omume na \({E}_{a}\) bụ ike ịgbalite.\({P}_{a,eq}\) bụ nguzozi nguzozi n'ime igwe hydride reactor n'oge usoro nnabata, nke van't Hoff equation nyere dị ka ndị a25:
Ebe \({P}_{ref}\) bụ nrụgide ntụaka nke 0.1 MPa.\ (\Delta H \) na \ (\Delta S \) bụ enthalpy na entropy nke mmeghachi omume, n'otu n'otu.A na-egosi njirimara alloys Mg2Ni na hydrogen na tebụl.4. Enwere ike ịchọta ndepụta aha ya na ngalaba mgbakwunye.
A na-ahụta nrịba mmiri ahụ dị ka ọgbaghara n'ihi na ọsọ ya na nọmba Reynolds (Re) bụ 78.75 ms-1 na 14000, n'otu n'otu.N'ime ọmụmụ ihe a, a họrọla ụdị ọgba aghara k-ε a ga-enweta.Ọ na-kwuru na usoro a na-enye elu ziri ezi tụnyere ndị ọzọ k-ε ụzọ, na-achọkwa obere mgbakọ oge karịa RNG k-ε50,51 ụzọ.Lee ngalaba Mgbakwụnye maka nkọwapụta na nha nha nha maka mmiri na-ebufe ọkụ.
Na mbụ, usoro okpomọkụ dị na MN reactor bụ otu, na nkezi mkpokọta hydrogen bụ 0.043.A na-eche na oke mpụta nke MH reactor nwere mkpuchi nke ọma.Alloys dabeere na magnesium na-achọkarị okpomọkụ mmeghachi omume dị elu iji chekwaa ma hapụ hydrogen na reactor.Mg2Ni alloy chọrọ oke okpomọkụ nke 523-603 K maka nnabata kachasị na oke okpomọkụ nke 573-603 K maka desorption zuru oke52.Otú ọ dị, nchọpụta nnwale nke Muthukumar et al.53 gosiri na enwere ike nweta ikike nchekwa kachasị nke Mg2Ni maka nchekwa hydrogen na okpomọkụ na-arụ ọrụ nke 573 K, nke kwekọrọ na ikike echiche ya.Ya mere, a họọrọ okpomọkụ nke 573 K dị ka okpomọkụ mbụ nke MN reactor na ọmụmụ a.
Mepụta nha grid dị iche iche maka nkwado yana nsonaazụ ntụkwasị obi.Na fig.2 na-egosi nkezi okpomọkụ na ebe ahọpụtara na usoro nnabata hydrogen site na ihe anọ dị iche iche.Ọ dị mma ịmara na ọ bụ naanị otu ikpe nke nhazi ọ bụla ka ahọpụtara iji nwalee maka nnwere onwe grid n'ihi geometry yiri ya.A na-etinye otu usoro ntupu n'ọnọdụ ndị ọzọ.Ya mere, họrọ nhọrọ 1 maka ọkpọkọ okirikiri na nhọrọ 4 maka ọkpọkọ ọkara-cylindrical.Na fig.2a, b na-egosi nkezi okpomọkụ na reactor maka nhọrọ 1 na 4, n'otu n'otu.Ebe atọ a ahọpụtara na-anọchi anya ihe nlegharị anya okpomọkụ dị n'elu, etiti na ala nke reactor.Dabere na contours ọnọdụ okpomọkụ na ebe ahọpụtara, nkezi okpomọkụ na-akwụsi ike ma gosipụta ntakịrị mgbanwe na nọmba mmewere 428,891 na 430,599 maka ikpe 1 na 4, n'otu n'otu.Ya mere, ahọpụtara nha grid ndị a maka ịgbakọ ngụkọ ọzọ.A na-enye ozi zuru ezu na nkezi okpomọkụ akwa maka usoro mmịpụta hydrogen maka nha sel dị iche iche na meshes nụchara nke ọma maka ikpe abụọ ahụ na ngalaba mgbakwunye.
Nkezi okpomọkụ n'ihe ndina n'ebe ahọpụtara na usoro nnabata hydrogen n'ime igwe igwe hydride reactor nwere ọnụọgụ grid dị iche iche.(a) Nkezi okpomọkụ na ebe ahọpụtara maka ikpe 1 na (b) Nkezi okpomọkụ na ebe ahọpụtara maka ikpe 4.
A nwalere reactor metal hydride reactor nke Mg na nyocha a dabere na nsonaazụ nnwale nke Muthukumar et al.53.N'ime ọmụmụ ihe ha, ha ji Mg2Ni alloy chekwaa hydrogen na tubes igwe anaghị agba nchara.A na-eji ntù ọla kọpa mee ka nnyefe ọkụ dị n'ime reactor.Na fig.3a na-egosi ntụnyere nkezi okpomọkụ nke ihe ndina usoro nnabata n'etiti nyocha nnwale na ọmụmụ ihe a.Ọnọdụ ọrụ ahọpụtara maka nnwale a bụ: MG mbido okpomọkụ 573 K na ntinye ntinye 2 MPa.Site na fig.3a enwere ike igosi n'ụzọ doro anya na nsonaazụ nnwale a dị na nkwekọrịta dị mma na nke dị ugbu a gbasara nkezi oyi akwa oyi.
nkwenye nlereanya.(a) Nkwenye koodu nke Mg2Ni metal hydride reactor site n'iji nyocha nke ugbu a tụnyere ọrụ nnwale nke Muthukumar et al.52, na (b) nkwenye nke spiral tube turbulent flow model site n'iji ihe ọmụmụ ugbu a tụnyere nke Kumar et al. .Nchọcha.54.
Iji nwalee ụdị ọgba aghara, a na-atụnyere nsonaazụ nke ọmụmụ a na nsonaazụ nnwale nke Kumar et al.54 iji kwado izi ezi nke ụdị ọgba aghara a họọrọ.Kumar et al.54 mụrụ ihe na-agbagharị agbagharị na tube-in-pipe spiral heat exchanger.A na-eji mmiri dị ka mmiri na-ekpo ọkụ na oyi na-esi n'akụkụ nke ọzọ gbanye.Mmiri mmiri na-ekpo ọkụ na oyi bụ 323 K na 300 K, n'otu n'otu.Ọnụọgụ Reynolds sitere na 3100 ruo 5700 maka mmiri ọkụ dị ọkụ yana site na 21,000 ruo 35,000 maka mmiri oyi.Nọmba Dean bụ 550-1000 maka mmiri ọkụ na 3600-6000 maka mmiri oyi.The dayameta nke n'ime ọkpọkọ (maka mmiri ọkụ na-ekpo ọkụ) na mpụga ọkpọkọ (maka oyi mmiri mmiri) bụ 0,0254 m na 0,0508 m, n'otu n'otu.Dayameta na pitch nke eriri igwe helical bụ 0.762 m na 0.100 m, n'otu n'otu.Na fig.3b na-egosi ntụnyere nnwale na nsonaazụ dị ugbu a maka ọnụọgụ abụọ Nusselt na Dean maka coolant na tube dị n'ime.Emebere ụdị ọgba aghara atọ dị iche iche ma jiri ya tụnyere nsonaazụ nnwale.Dị ka e gosiri na fig.3b, nsonaazụ nke ụdị ọgba aghara k-ε achievable dị na nkwekọrịta dị mma na data nnwale.Ya mere, a họọrọ ihe nlereanya a na ọmụmụ ihe a.
Emere simulations ọnụọgụgụ na ọmụmụ a site na iji ANSYS Fluent 2020 R2.Dee ọrụ akọwapụtara onye ọrụ (UDF) wee jiri ya dị ka okwu ntinye nke nha nha ike iji gbakọọ kinetics nke usoro nnabata.A na-eji sekit PESTO55 na usoro PISO56 maka nkwurịta okwu ọsọ ọsọ na mgbazi nrụgide.Họrọ ntọala cell Greene-Gauss maka gradient agbanwe.A na-edozi nha ọkụ na ike site na usoro mgbago elu nke abụọ.N'ihe gbasara ọnụọgụ ezumike n'okpuru, a na-edobe nrụgide, ọsọ na ihe ike na 0.5, 0.7, na 0.7, n'otu n'otu.A na-etinye ọrụ mgbidi ọkọlọtọ na HTF na ụdị ọgba aghara.
Akụkụ a na-egosi nsonaazụ ọnụọgụ ọnụọgụ nke mbufe ọkụ dị n'ime nke MH reactor site na iji igwe na-ekpo ọkụ coil coil heat exchanger (HCHE) na helical coil heat exchanger (SCHE) n'oge nnabata hydrogen.A tụlere mmetụta nke pitch HTF na okpomọkụ nke ihe ndina reactor na ogologo oge nke absorption.A na-amụ ihe ndị bụ isi na-arụ ọrụ nke usoro absorption ma gosipụta ya na ngalaba nyocha uche.
Iji nyochaa mmetụta nke oghere eriri igwe na mbufe ọkụ na MH reactor, a nyochara nhazi mgbanwe okpomọkụ atọ nwere ọkwa dị iche iche.A na-ahọpụta ọkwa atọ dị iche iche nke 15mm, 12.86mm na 10mm ahụ 1, ahụ 2 na ahụ 3 n'otu n'otu.Ekwesiri iburu n'uche na a na-edozi dayameta ọkpọkọ na 6 mm na okpomọkụ mbụ nke 573 K na nrụgide ntinye nke 1.8 MPa n'ọnọdụ niile.Na fig.4 na-egosi nkezi okpomọkụ bed na hydrogen itinye uche na MH oyi akwa n'oge hydrogen absorption usoro na ikpe 1 ka 3. A, mmeghachi omume n'etiti metal hydride na hydrogen bụ exothermic na absorption usoro.Ya mere, okpomọkụ nke akwa akwa na-ebili ngwa ngwa n'ihi oge mbụ mgbe a na-ebuba hydrogen na reactor.Okpomọkụ ihe ndina na-abawanye ruo mgbe ọ ruru oke uru wee jiri nwayọọ nwayọọ na-ebelata ka okpomọkụ na-ebupụ site na coolant, nke nwere obere okpomọkụ ma na-eme ihe dị ka coolant.Dị ka e gosiri na fig.4a, n'ihi nkọwa gara aga, okpomọkụ nke oyi akwa na-abawanye ngwa ngwa ma na-ebelata na-aga n'ihu.Ntinye uche hydrogen maka usoro nnabata na-adaberekarị na okpomọkụ nke akwa nke MH reactor.Mgbe nkezi oyi akwa na-adaba na ọnọdụ okpomọkụ, elu igwe na-amịkọrọ hydrogen.Nke a bụ n'ihi mmụba nke usoro physisorption, chemisorption, mgbasa nke hydrogen na nhazi nke hydrides na reactor.Site na fig.4b enwere ike ịhụ na ọnụ ọgụgụ nke absorption hydrogen ma ọ bụrụ na 3 dị ala karịa n'ọnọdụ ndị ọzọ n'ihi ntakịrị uru nzọụkwụ nke igwe na-ekpo ọkụ ọkụ.Nke a na-ebute ogologo ọkpọkọ n'ozuzu ya na ebe nnyefe ọkụ buru ibu maka ọkpọkọ HTF.Site na mkpokọta hydrogen nke 90%, oge nnabata maka ikpe 1 bụ 46,276 sekọnd.N'iji ya tụnyere ogologo oge nke mmịpụta na ikpe 1, oge ntinye na ikpe 2 na 3 belatara site na 724 s na 1263 s, n'otu n'otu.Ngalaba mgbakwunye na-egosi ọnọdụ okpomọkụ na hydrogen maka ebe ahọpụtara na oyi akwa HCHE-MH.
Mmetụta dị anya n'etiti coils na nkezi oyi akwa oyi na ntinye hydrogen.(a) Nkezi okpomoku bed maka eriri igwe helical, (b) itinye uche hydrogen maka coils helical, (c) nkezi ihe ndina maka coils hemi-cylindrical, na (d) itinye uche hydrogen maka mkpuchi mkpuchi hemi-cylindrical.
Iji meziwanye njirimara mbufe ọkụ nke MG reactor, a haziri HFC abụọ maka ụda mgbe niile nke MG (2000 cm3) na ntụgharị ọkụ gburugburu (100 cm3) nke Nhọrọ 3. Nkebi a na-atụlekwa mmetụta nke anya dị n'etiti. mkpuchi nke 15 mm maka ikpe 4, 12.86 mm maka ikpe 5 na 10 mm maka ikpe 6. Na fig.4c, d na-egosi nkezi okpomọkụ bed na ntinye nke usoro mmịpụta hydrogen na okpomọkụ mbụ nke 573 K na nrụgide ntinye nke 1.8 MPa.Dị ka nkezi oyi akwa okpomọkụ na Fig. 4c, nta anya n'etiti coils bụrụ 6 na-ebelata okpomọkụ nke ukwuu ma e jiri ya tụnyere abụọ ndị ọzọ.Maka ikpe 6, ọnọdụ okpomọkụ dị ala na-eme ka ikuku hydrogen dị elu (lee Fig. 4d).Oge nnabata hydrogen maka Variant 4 bụ 19542 s, nke karịrị okpukpu abụọ dị ala karịa maka Variants 1-3 na-eji HCH.Na mgbakwunye, ma e jiri ya tụnyere ikpe 4, a na-ebelata oge nnabata ahụ site na 378 s na 1515 s na ikpe 5 na 6 nwere obere anya.Ngalaba mgbakwunye na-egosi ọnọdụ okpomọkụ na hydrogen maka ebe ahọpụtara na oyi akwa SCHE-MH.
Iji mụọ arụmọrụ nke nhazi mgbanwe okpomọkụ abụọ, ngalaba a na-eme atụmatụ ma na-egosi ọnọdụ okpomọkụ na ebe atọ ahọpụtara.The MH reactor na HCHE si case 3 ka ahọpụtara maka iji tụnyere MH reactor nwere SCHE na ikpe 4 n'ihi na ọ nwere MH olu mgbe niile na ọkpọkọ ọkpọ.Ọnọdụ arụ ọrụ maka ntụnyere a bụ okpomọkụ mbụ nke 573 K na nrụgide ntinye nke 1.8 MPa.Na fig.5a na 5b na-egosi ọnọdụ atọ ahọpụtara nke profaịlụ ọnọdụ okpomọkụ na ikpe 3 na 4, n'otu n'otu.Na fig.5c na-egosi profaịlụ ọnọdụ okpomọkụ na ịta ahụhụ oyi akwa mgbe 20,000 s nke mkpali hydrogen gasịrị.Dị ka ahịrị 1 dị na Fig 5c, okpomọkụ dị n'akụkụ TTF site na nhọrọ 3 na 4 na-ebelata n'ihi nnyefe ọkụ convective nke coolant.Nke a na-ebute mkpokọta hydrogen dị elu gburugburu ebe a.Agbanyeghị, iji SCHE abụọ na-ebute mkpokọta oyi akwa dị elu.Achọtara nzaghachi kinetic ngwa ngwa gburugburu mpaghara HTF na ikpe 4. Tụkwasị na nke ahụ, a na-ahụkwa ihe kachasị elu nke 100% na mpaghara a.Site na ahịrị 2 nke dị n'etiti etiti reactor, ọnọdụ okpomọkụ nke ikpe 4 dị ntakịrị karịa okpomọkụ nke ikpe 3 n'ebe niile ma e wezụga etiti nke reactor.Nke a na-ebute mkpokọta hydrogen kachasị maka ikpe 4 ma e wezụga mpaghara dị nso n'etiti reactor pụọ na HTF.Otú ọ dị, ntinye uche nke ikpe 3 agbanwebeghị nke ukwuu.A hụrụ nnukwu ọdịiche dị na okpomọkụ na ntinye nke oyi akwa na ahịrị 3 dị nso n'ọnụ ụzọ GTS.Okpomọkụ nke oyi akwa ma ọ bụrụ na 4 belatara nke ukwuu, na-ebute mkpokọta hydrogen kacha elu na mpaghara a, ebe akara ntinye aka ma ọ bụrụ na 3 ka na-agbanwe agbanwe.Nke a bụ n'ihi mmụba nke nnyefe ọkụ SCHE.A na-enye nkọwa na mkparịta ụka ntụnyere nkezi okpomọkụ nke oyi akwa MH na ọkpọkọ HTF n'etiti ikpe 3 na ikpe 4 na ngalaba mgbakwunye.
Profaịlụ ọnọdụ okpomọkụ na itinye uche n'ihe ndina n'ebe ahọpụtara na reactor metal hydride.(a) Ebe ahọpụtara maka ikpe 3, (b) Ọnọdụ ahọpụtara maka ikpe 4, na (c) Profaịlụ okpomọkụ na ntinye oyi akwa na ebe ahọpụtara ka 20,000 s gachara maka usoro nnabata hydrogen na ikpe 3 na 4.
Na fig.Ihe osise 6 na-egosi ntụnyere nke okpomọkụ bed (lee Fig. 6a) na hydrogen ntinye (lee Fig. 6b) maka absorption nke HCH na SHE.Enwere ike ịhụ site na ọnụ ọgụgụ a na okpomọkụ nke oyi akwa MG na-ebelata nke ukwuu n'ihi mmụba na mpaghara mgbanwe okpomọkụ.Iwepu ọkụ karịa site na reactor na-ebute oke nnabata hydrogen dị elu.Ọ bụ ezie na nhazi abụọ na-ekpo ọkụ na-ekpo ọkụ nwere otu mpịakọta ma e jiri ya tụnyere iji HCHE dị ka Nhọrọ 3, oge ntinye hydrogen nke SCHE dabere na Nhọrọ 4 belatara nke ukwuu site na 59%.Maka nkọwa zuru ezu karị, a na-egosi nchikota hydrogen maka nhazi okpomọkụ abụọ ahụ dị ka isolines na Figure 7. Ọnụ ọgụgụ a na-egosi na n'ọnọdụ abụọ ahụ, hydrogen na-amalite ịbanye n'okpuru ebe a na-abanye n'ime HTF.Achọpụtara ọkwa dị elu na mpaghara HTF, ebe a na-ahụ ihe dị ala n'etiti etiti MH reactor n'ihi na ọ dị anya site na onye na-ekpo ọkụ ọkụ.Mgbe 10,000 s gasịrị, ntinye hydrogen na ikpe 4 dị elu karịa ikpe 3. Mgbe 20,000 sekọnd gasịrị, nkezi nke hydrogen ntinye na reactor ebiliwo na 90% na ikpe 4 ma e jiri ya tụnyere 50% hydrogen na ikpe 3. Nke a nwere ike ịbụ n'ihi na ikike dị mma dị elu nke ijikọta SCHE abụọ, na-eme ka okpomọkụ dị ala n'ime oyi akwa MH.N'ihi ya, nrụgide nha nha na-adaba n'ime oyi akwa MG, nke na-eduga na mmịnye hydrogen ngwa ngwa.
Ikpe 3 na ikpe 4 Ntụle nke nkezi okpomọkụ bed na ntinye hydrogen n'etiti nhazi okpomọkụ abụọ.
Ntụle nke mkpokọta hydrogen ka 500, 2000, 5000, 10000 na 20000 s ka mmalite nke usoro mmịpụta hydrogen gachara na ikpe 3 na ikpe 4.
Tebụl 5 na-achikota ogologo oge iwere hydrogen maka ikpe niile.Na mgbakwunye, tebụl na-egosikwa oge nnabata nke hydrogen, gosipụtara dị ka pasent.A na-agbakọ pasent a dabere na oge ntinye nke Case 1. Site na tebụl a, oge ntinye nke MH reactor na-eji HCHE bụ ihe dịka 45,000 ruo 46,000 s, na oge ntinye gụnyere SCHE bụ ihe dịka 18,000 ruo 19,000 s.Tụnyere ikpe 1, oge nnabata na Ikpe 2 na nke 3 belatara naanị 1.6% na 2.7%, n'otu n'otu.Mgbe ị na-eji SCHE kama HCHE, oge nnabata belatara nke ukwuu site na ikpe 4 ruo ikpe 6, site na 58% ruo 61%.O doro anya na mgbakwunye nke SCHE na MH reactor na-eme ka usoro mmịpụta hydrogen dịkwuo mma na arụmọrụ nke MH reactor.Ọ bụ ezie na ntinye nke onye na-ekpo ọkụ na-ekpo ọkụ n'ime MH reactor na-ebelata ikike nchekwa, nkà na ụzụ a na-enye ọganihu dị ukwuu na nnyefe okpomọkụ ma e jiri ya tụnyere teknụzụ ndị ọzọ.Ọzọkwa, ibelata ọnụ ahịa pitch ga-abawanye ụda nke SCHE, na-eme ka mbelata nke MH.N'ihe banyere 6 nwere oke SCHE kachasị elu, ikike MH volumetric ka e belatara naanị 5% ma e jiri ya tụnyere ikpe 1 nwere oke HCHE kacha ala.Na mgbakwunye, n'oge nnabata, ikpe 6 gosipụtara ngwa ngwa na arụmọrụ ka mma yana mbelata 61% na oge nnabata.Ya mere a họọrọ ikpe 6 maka nyocha ọzọ na nyocha uche.Ekwesiri iburu n'uche na ogologo oge nke hydrogen na-ejikọta ya na tank nchekwa nke nwere MH nke ihe dịka 2000 cm3.
Akụkụ ndị na-arụ ọrụ n'oge mmeghachi omume bụ ihe dị mkpa na-emetụta ma ọ bụ na-adịghị mma na-emetụta arụmọrụ nke MH reactor n'okpuru ezigbo ọnọdụ.Nke a na-amụ na-atụle a sensitivity analysis iji chọpụta ihe kwesịrị ekwesị mmalite arụ ọrụ paramita maka MH reactor na Nchikota na SCHE, na nkebi a na-enyocha anọ isi ọrụ parameters dabere na ezigbo reactor nhazi na ikpe 6. Nsonaazụ maka niile arụ ọrụ ọnọdụ na-e gosiri na. Foto 8.
Eserese nke itinye uche hydrogen n'okpuru ọnọdụ arụ ọrụ dị iche iche mgbe ị na-eji igwe na-ekpo ọkụ na-eji eriri cylindrical ọkara.(a) nrụgide nrụnye, (b) okpomoku akwa mbụ, (c) nọmba Reynolds coolant, na (d) okpomoku ntinye mmiri oyi.
Dabere na okpomọkụ mmalite nke 573 K mgbe niile yana ọnụego mmiri oyi nwere ọnụ ọgụgụ Reynolds nke 14,000, ahọpụtara nrụgide ntinye dị iche iche: 1.2 MPa, 1.8 MPa, 2.4 MPa, na 3.0 MPa.Na fig.8a na-egosi mmetụta nke nrụgide ntinye na SCHE na ntinye hydrogen ka oge na-aga.Oge nnabata na-ebelata site na nrịbawanye nrụnye.Iji nrụgide hydrogen etinyere nke 1.2 MPa bụ ikpe kachasị njọ maka usoro mmịpụta hydrogen, na oge nnabata gafere 26,000 s iji nweta 90% absorption hydrogen.Otú ọ dị, nrụgide ntinye dị elu mere ka mbelata 32-42% na oge ntinye site na 1.8 ruo 3.0 MPa.Nke a bụ n'ihi nrụgide mbụ dị elu nke hydrogen, nke na-ebute nnukwu ọdịiche dị n'etiti nrụgide nha nha na nrụgide etinyere.Ya mere, nke a na-emepụta nnukwu ike na-anya ụgbọ ala maka hydrogen uptake kinetics.N'oge mbụ, hydrogen gas na-etinye ngwa ngwa n'ihi nnukwu ọdịiche dị n'etiti nrụgide nha na nrụgide etinyere57.Na nrụgide nke 3.0 MPa, 18% hydrogen na-agbakọ ngwa ngwa n'ime sekọnd iri mbụ.A na-echekwa hydrogen na 90% nke reactors na njedebe ikpeazụ maka 15460 s.Otú ọ dị, na nrụgide ntinye nke 1.2 ruo 1.8 MPa, oge absorption belatara nke ukwuu site na 32%.Nrụgide ndị ọzọ dị elu enwechaghị mmetụta n'ịkwalite oge nnabata.Ya mere, a na-atụ aro ka nrụgide ntinye nke MH-SCHE reactor bụrụ 1.8 MPa.Akụkụ nke mgbakwunye na-egosi contours mkpokọta hydrogen maka nrụgide nrụnye dị iche iche na 15500 s.
Nhọrọ nke mmalite okpomọkụ kwesịrị ekwesị nke MH reactor bụ otu n'ime isi ihe na-emetụta usoro mgbasa ozi hydrogen, n'ihi na ọ na-emetụta ike nke mmeghachi omume nhazi nke hydride.Iji mụọ mmetụta nke SCHE na okpomọkụ mbụ nke MH reactor, a họọrọ okpomọkụ anọ dị iche iche na nrụgide ntinye mgbe niile nke 1.8 MPa na nọmba Reynolds nke 14,000 HTF.Na fig.Onyonyo 8b na-egosi ntụnyere nke okpomọkụ mmalite dị iche iche, gụnyere 473K, 523K, 573K, na 623K.N'ezie, mgbe okpomọkụ dị elu karịa 230 Celsius ma ọ bụ 503K58, Mg2Ni alloy nwere àgwà dị irè maka usoro mmịpụta hydrogen.Otú ọ dị, n'oge mmalite nke injection hydrogen, okpomọkụ na-ebili ngwa ngwa.N'ihi ya, okpomọkụ nke oyi akwa MG ga-agafe 523 K. Ya mere, a na-eme ka nhazi nke hydrides dị mfe n'ihi ụbara absorption ọnụego53.Site na fig.Enwere ike ịhụ site na Fig. 8b na hydrogen na-abanye ngwa ngwa ka okpomọkụ mbụ nke oyi akwa MB na-ebelata.Nrụgide nha nha dị ala na-eme mgbe okpomọkụ mbụ dị ala.Ihe dị iche iche nrụgide dị n'etiti nrụgide nha nha na nrụgide etinyere, na-eme ngwa ngwa usoro nke absorption hydrogen.Na okpomọkụ mbụ nke 473K, hydrogen na-etinye ngwa ngwa ruo 27% n'ime sekọnd 18 mbụ.Tụkwasị na nke ahụ, a na-ebelata oge ntinye ahụ site na 11% ruo 24% na obere okpomọkụ nke mbụ ma e jiri ya tụnyere nke mbụ okpomọkụ nke 623 K. Oge ntinye na nke kachasị elu nke 473 K bụ 15247 s, nke yiri nke kacha mma. ikpe loading mgbali, Otú ọ dị, mbelata na mmalite okpomọkụ reactor okpomọkụ na-eduga ná mbelata nke hydrogen nchekwa ikike.Okpomọkụ mbụ nke reactor MN ga-abụrịrị opekata mpe 503 K53.Tụkwasị na nke ahụ, na okpomọkụ nke mbụ nke 573 K53, enwere ike nweta ikike nchekwa hydrogen kacha elu nke 3.6 wt%.N'ihe banyere ikike nchekwa hydrogen na oge nnabata, okpomọkụ dị n'etiti 523 na 573 K na-ebelata oge naanị 6%.Ya mere, a na-atụ aro okpomọkụ nke 573 K dị ka okpomọkụ mbụ nke MH-SCHE reactor.Otú ọ dị, mmetụta nke okpomọkụ mbụ na usoro ntinye ahụ dị ntakịrị ma e jiri ya tụnyere nrụgide ntinye.Akụkụ nke mgbakwunye na-egosi ngbanwe nke mkpokọta hydrogen maka okpomọkụ mmalite dị iche iche na 15500 s.
Ọnụọgụ na-erugharị bụ otu n'ime ihe ndị bụ isi nke hydrogenation na dehydrogenation n'ihi na ọ nwere ike imetụta ọgba aghara na iwepụ okpomọkụ ma ọ bụ ntinye n'oge hydrogenation na dehydrogenation59.Ọnụego mgbaba dị elu ga-emepụta usoro ọgba aghara wee mee ka mmiri na-agba ọsọ ọsọ site na tubing HTF.Mmeghachi omume a ga-ebute nnyefe ọkụ ngwa ngwa.A na-agbakọ ọsọ ntinye dị iche iche maka HTF dabere na ọnụọgụ Reynolds nke 10,000, 14,000, 18,000 na 22,000.A na-edozi okpomọkụ mbụ nke oyi akwa MG na 573 K na nrụgide ntinye na 1.8 MPa.Ihe si na fig.8c gosiputara na iji ọnụ ọgụgụ Reynolds dị elu jikọtara ya na nsonaazụ SCHE n'ọkwa dị elu.Ka ọnụ ọgụgụ Reynolds na-abawanye site na 10,000 ruo 22,000, oge nnabata na-ebelata ihe dịka 28-50%.Oge nnabata na ọnụ ọgụgụ Reynolds nke 22,000 bụ 12,505 sekọnd, nke na-erughị n'ogo dị iche iche na-ebu ibu na nrụgide.A na-egosi contours mkpokọta hydrogen maka ọnụọgụ Reynolds dị iche iche maka GTP na 12500 s na ngalaba mgbakwunye.
A na-enyocha mmetụta nke SCHE na okpomọkụ mbụ nke HTF ma gosipụta ya na Fig. 8d.Na mmalite MG okpomọkụ nke 573 K na hydrogen loading mgbali nke 1.8 MPa, a họọrọ anọ okpomọkụ mbụ maka nyocha a: 373 K, 473 K, 523 K, na 573 K. 8d na-egosi na mbelata okpomọkụ nke coolant. na ntinye na-eduga na mbelata nke oge absorption.N'iji ya tụnyere isi okwu nwere okpomọkụ mbata nke 573 K, oge nnabata ahụ belatara ihe dịka 20%, 44% na 56% maka okpomọkụ mbata nke 523 K, 473 K na 373 K, n'otu n'otu.Na 6917 s, mmalite okpomọkụ nke GTF bụ 373 K, hydrogen ntinye na reactor bụ 90%.Enwere ike ịkọwa nke a site na mbufe ọkụ convective dị n'etiti oyi akwa MG na HCS.Okpomọkụ HTF dị ala ga-eme ka mkpọsa ọkụ pụta ma mee ka mmụba hydrogen dịwanye elu.N'ime paramita niile na-arụ ọrụ, imeziwanye arụmọrụ nke MH-SCHE reactor site n'ịba ụba ọkụ inlet HTF bụ usoro kachasị dabara adaba, ebe ọ bụ na njedebe oge nke usoro mmịpụta bụ ihe na-erughị 7000 s, ebe oge ntinye nke kacha nta nke ụzọ ndị ọzọ bụ karịa. karịa 10000 s.A na-egosipụta contours mkpokọta hydrogen maka okpomọkụ mmalite dị iche iche nke GTP maka 7000 s.
Ọmụmụ ihe a na-egosi nke mbụ ihe ngbanwe okpomọkụ nke ọkara cylindrical agbakwunyere n'ime ngalaba nchekwa igwe hydride.Achọpụtara ikike nke usoro a chọrọ iji nweta hydrogen site na nhazi dị iche iche nke onye na-ekpo ọkụ ọkụ.A na-enyocha mmetụta nke paramita ndị na-arụ ọrụ na mgbanwe okpomọkụ dị n'etiti metal hydride oyi akwa na coolant iji chọpụta ọnọdụ kachasị mma maka ịchekwa hydrides metal site na iji ihe ọhụrụ okpomọkụ.A chịkọtara isi ihe nchoputa a dị ka ndị a:
Site na igwe na-ekpo ọkụ na-ekpo ọkụ nke ọkara cylindrical, a na-eme ka ọrụ nnyefe okpomọkụ dịkwuo mma n'ihi na ọ nwere nkesa ọkụ na-ekpo ọkụ na-eme ka ọ bụrụ nkesa oyi akwa magnesium, na-ebute ọnụ ọgụgụ mmịnye hydrogen ka mma.Ọ bụrụhaala na olu nke tube mgbanwe okpomọkụ na metal hydride na-agbanwe agbanwe, oge mmeghachi omume absorption na-ebelata nke ukwuu site na 59% ma e jiri ya tụnyere ihe na-ekpo ọkụ na-ekpo ọkụ.
Oge nzipu: Jan-15-2023