Ubuchwepheshe Bamuva Kumajeneretha Amandla E-Geothermal
Amandla angaphansi komhlaba angenye yemithombo yamandla avuselelekayo ezinzile kakhulu, uma kuqhathaniswa nelanga nomoya. Ukushisa okungaphansi komhlaba kuyatholakala amahora angama-24 ngosuku, akuxhomekile esimweni sezulu, futhi kunomkhawulo wekhabhoni ophansi. Kodwa-ke, ukusebenzisa akulula ngaso sonke isikhathi: imithombo yokushisa itholakala ngokungalingani, izindleko zokubhoboza ziphezulu, kanti izinselele zobuchwepheshe zifaka phakathi ukugqwala, ukukala (ukwenyuka kwamaminerali), kanye nokuphathwa koketshezi olungaphansi komhlaba. Eminyakeni yamuva nje, ukusungula izinto ezintsha ohlangothini lwejeneretha kanye nochungechunge lonke lokuguqulwa kwamandla angaphansi komhlaba kuthuthuke ngokushesha. Lesi sihloko sihlola ubuchwepheshe bamuva obenza izitshalo zamandla angaphansi komhlaba zisebenze kahle, ziguquguquke, futhi zibe nokwenzeka ezindaweni eziningi.
1) Umjikelezo Wesibili Wesizukulwane Esisha: I-ORC ne-Kalina Esebenza Kakhulu
Ezindaweni eziningi ezisebenzisa umoya oshisayo, amazinga okushisa oketshezi awaphakeme ngokwanele ukukhiqiza umusi owomile ofanele ama-turbine avamile omusi. Yilapho izitshalo zamandla omjikelezo we-binary zisebenza khona. Ubuchwepheshe be-binary budlulisela ukushisa kusuka ku-brine ye-geothermal kuya kuketshezi olusebenzayo olubila kancane (njenge-isobutane, i-isopentane, noma izingxube ezithile), olube seluqhuba i-turbine.
Intuthuko yakamuva ku-Organic Rankine Cycle (ORC) ifaka:
– Imiklamo yokushintshanisa ukushisa emincane futhi esebenza kahle, njengezishintshisana nokushisa ngamapuleti noma ukwakheka okwandisa i-coefficient yokudlulisa ukushisa ngenkathi kunciphisa ukungcola.
– Ama-turbine amancane asebenza kahle kakhulu ngesivinini esikhulu emithonjeni yokushisa ephansi, okwenza amaphrojekthi e-modular angu-1–10 MW abe ngokonga kakhulu.
– Ukuthuthukisa ukulawula nokusebenza okuguquguqukayo, okuvumela isitshalo ukuthi sizivumelanise nezinguquko zesilinganiso sokugeleza kwamanzi ahlanzekile kanye nokushisa ngaphandle kokulahlekelwa okukhulu kokusebenza kahle.
Ngaphezu kwe-ORC, i-Kalina Cycle (esebenzisa ingxube ye-ammonia-water) nayo iyaqhubeka nokuhlungwa ngenxa yekhono layo lokubamba amandla emazingeni okushisa aphansi ngokusebenza kahle. Izinselele zisebunkimbinkimbini besistimu kanye nezinto okumele zibhekane nezimo ezithile zamakhemikhali. Ucwaningo lwakamuva lugxile ekuthuthukiseni ukuthembeka, ukukhethwa kwezinto, kanye nokulawula ukwakheka kwengxube ukuze kusebenze kahle.
2) Ama-Turbine nama-Generator: Izinto Ezithuthukisiwe Nemiklamo Emelana Kakhulu Nezindawo Ezigqwalisayo
Uhlangothi "lwejeneretha" lwamandla angaphansi komhlaba alugcini nje ngokuphathelene nejeneretha kagesi, kodwa futhi ne-turbine eyinika amandla. Umusi we-geothermal kanye ne-brine kungaqukatha i-H₂S, i-CO₂, i-chloride, i-silica, kanye namaminerali ahlukahlukene angabangela ukugqwala kanye nokufakwa.
Izinto ezintsha ezibalulekile zifaka:
– Izinto zokulwa nokugqwala kanye nokulwa nokuguguleka kanye nokumbozwa kuma-blades e-turbine, ama-casing, kanye nezingxenye zama-valve. Ubuchwepheshe bokufafaza ngokushisa, ukumbozwa okusekelwe ku-nickel, kanye nezinto ezithile ezihlanganisiwe kusiza ekwandiseni impilo yesevisi.
– Imiklamo ye-turbine ebekezelela kakhulu “ukungcola”, isibonelo i-blade geometry enciphisa izindawo ezivame ukubola, kanye nesistimu yokuhlukanisa amaconsi esebenza kahle kakhulu (isihlukanisi somswakama) somusi omanzi.
– I-generator ehambisanayo kanye nesistimu yokupholisa ethuthukisiwe ukugcina i-generator izinzile lapho imithwalo iphezulu ezimweni ezishisayo nezinomswakama ezivamile ezindaweni ezishisayo.
Umphumela uba ukuncipha kwesikhathi sokungasebenzi, ukusebenza kahle okuqhubekayo, kanye nezindleko zokusebenza nokulungisa ezilawulwa kakhulu.
3) Izinhlelo Ezithuthukisiwe Zokushisa Komhlaba (i-EGS): Ukuvula Izindawo Ezintsha “Zamajeneretha” Ekushisa Komhlaba
Intuthuko enkulu embonini ye-geothermal yi-Enhanced Geothermal Systems (EGS). Umqondo: Uma indawo inedwala elishisayo kodwa ingena kalula (amanzi anele ukugeleza), kudalwa ukuqhekeka kokwenziwa ukuze kudalwe "indawo yokugcina amanzi" okugeleza. Lokhu kwandisa amandla e-geothermal ezindaweni ezazingatholakali ngaphambilini.
I-EGS idinga:
– Ubuchwepheshe bokuvuselela amanzi agelezayo obunembe kakhulu (isb. ukuvuselela amanzi agelezayo).
– Ukuqapha ukuzamazama komhlaba okuncane ngesikhathi sangempela ukulawula izingozi zokuzamazama komhlaba ezibangelwa yilokhu.
- Ukumodela kwedamu kanye nokubikezela ukugeleza kwamanzi kusetshenziswa ukulingisa okunembe kakhudlwana kwezinombolo.
Njengoba i-EGS ivuthwa futhi ithola ukwamukelwa ngokomthetho, “amajeneretha” e-geothermal angakhiwa eduze kwezikhungo zokulayisha ugesi ngaphandle kokuthembela emachibini emvelo akhethekile kakhulu.
4) I-Geothermal Evaliwe: Ukunciphisa Ingozi Yoketshezi Nobunzima
Ubuchwepheshe obukhulayo buyi-closed-loop geothermal. Ngokungafani nezinhlelo ezivamile ezipompa amanzi angcolile avela ngaphansi komhlaba, amanzi angcolile ajikeleza uketshezi olusebenzayo epayipini elivaliwe elidonsa ukushisa edwaleni elishisayo ngaphandle kokuthintana ngqo ne-brine.
Izinzuzo zayo:
– Ingozi yokukhukhumala nokugqwala ngenxa yosawoti incishiswe kakhulu.
- Kunciphisa ukungaqiniseki mayelana nokuhambisana kwamakhemikhali oketshezi.
– Ukusetshenziswa okungenzeka ezindaweni ezingenawo amachibi amaningi amanzi ashisayo.
Inselele ukuqinisekisa ukudluliselwa kokushisa okwanele ukuze iphrojekthi iphumelele ngokwezomnotho. Ngakho-ke, izinto ezintsha zigxile ekwakhiweni kwe-geometry yemithombo, izinto zamapayipi ezisebenzisa ugesi ophezulu, kanye nokwenza ngcono izinga lokugeleza koketshezi. Uma ziphumelela, izinhlelo ezivaliwe zingasheshisa ukwakhiwa kwezitshalo zamandla kagesi ezisebenzisa ugesi ezivamile.
5) Idwala Elishisayo Kakhulu kanye Nokushisa Okuphezulu Kakhulu: Ukwanda Okukhulu Kokusebenza Kahle
Enye yemingcele ebaluleke kakhulu yi-superhot geothermal (amadwala ashisa kakhulu, angafinyelela amazinga okushisa angaphezu kuka-374°C, asondele noma adlule amazinga okushisa aphezulu kakhulu amanzi). Ama-supercritical fluids anobuningi obukhulu kanye nama-enthalpies, okuwanika amandla okukhiqiza amandla amaningi kakhulu emthonjeni ngamunye.
Ubuchwepheshe obuyinhloko buhlanganisa:
– Amasu okubhoboza amazinga okushisa aphezulu kanye nezinto zokwakha ezimelana nokushisa okuphezulu.
– Izinzwa ze-Downhole ezikwazi ukusebenza kahle emazingeni okushisa aphezulu kakhulu.
- Amasu okukhiqiza nokufaka kabusha amanzi aphephile ukuvimbela ukusebenza kwedamu ukuthi kwehle ngokushesha.
Uma lezi zinselele zobuchwepheshe zinqotshwa, izitshalo zamandla ezisebenzisa i-geothermal zinamandla okufinyelela ubuningi bamandla obufana nobezitshalo ezivamile ezisebenzisa amandla angaphansi komhlaba, kodwa ngokukhishwa komoya okuphansi.
6) Ukusungula Izinto Ezintsha: Izindleko Eziphansi, Amaphrojekthi Asheshayo
Nakuba lesi sihloko sigxile "kumajeneretha," iqiniso liwukuthi izindleko zikagesi we-geothermal zithonywa kakhulu ukubhoboza. Ngakho-ke, ubuchwepheshe bamuva bokubhoboza buthinta ngqo ukusebenza kwesitshalo.
Intuthuko ebalulekile:
– Ukubhoboza okuqondiswayo kanye nemithombo eminingi ukuze “kushanelwe” indawo ebanzi yedamu kusuka endaweni eyodwa.
– Izingcezu ze-PDC kanye nezinto zokubhoboza ezimelana nokuguguleka kalula emadwaleni aqinile.
– Ukubhola okuqhutshwa idatha: ukuhlaziya kwesikhathi sangempela ukuvimbela ipayipi elibambekile, ukuthuthukisa isisindo ku-bit, nokusheshisa amazinga okungena.
– Ukuhlolwa kobuchwepheshe obusha bokubhoboza (isib. izindlela zokushisa noma ezingavamile) okuhloswe ngazo ukunciphisa izindleko kakhulu.
Ngokubhoboza okushibhile nokusheshayo, amaphrojekthi amaningi okushisa komhlaba angafinyelela izinga lokuhweba.
7) Ukwenziwa Kwedijithali kanye ne-AI: “Isikhungo Sikagesi Esihlakaniphile Sokushisa Komhlaba”
Izitshalo zesimanje ze-geothermal ziya emisebenzini eqhutshwa idatha. Izinhlelo zezinzwa, i-SCADA, kanye ne-historian manje sezihlanganiswe ne-AI kanye nokufunda komshini ukuze:
– Ukulungiswa okubikezelayo: ukubikezela ukwehluleka kwebheri, iphampu, noma i-turbine ngaphambi kokuba kwenzeke.
- Lungiselela ama-setpoint kuma-heat exchanger, ama-separators, kanye nama-condenser ukuze uthole umphumela omkhulu ngokusetshenziswa okuncane kakhulu kwe-parasitic.
- Ukuqapha ukukala kanye nokugqwala ngokuhlanganiswa kwe-chemical yoketshezi, izinga lokushisa, ingcindezi, kanye nedatha yokusebenza kwemishini.
Amawele edijithali—amamodeli angokoqobo ezitshalo zikagesi kanye namachibi—nawo aqala ukusetshenziswa ukuhlola izimo zokusebenza ngaphandle kokuphazamisa uhlelo lwangempela.
8) Ukuhlanganiswa Nokugcina Nokusebenzisa Ukushisa (Ukukhiqiza Ngokuhambisanayo)
Ubuchwepheshe bamuva abugcini nje ngokufuna ugesi, kodwa futhi bunenani elengeziwe:
– Ukukhiqiza ndawonye (CHP): ukushisa okusele kusetshenziselwa ukomisa imikhiqizo yezolimo, ukufudumeza kwesifunda, izinqubo zezimboni, noma izindlu zokugcina izithombo.
– Ukuhlanganiswa: ukushisa komhlaba kuhlanganiswe nokushisa kwelanga noma i-biomass ukwandisa ukuguquguquka.
– Isitoreji samandla okushisa ukuze kusheleleze umkhiqizo futhi kwandiswe ikhono lokulandela umthwalo, yize i-geothermal ngokwayo isivele iyisisekelo somthwalo.
Le ndlela ikhulisa amandla omnotho futhi iqinisa indima ye-geothermal ekushintsheni kwamandla.
Isiphetho
Ubuchwepheshe bamuva kumajeneretha wamandla angaphansi komhlaba buhamba ngezindlela eziningi: imijikelezo ye-binary ye-ORC/Kalina esebenza kahle kakhulu, izinto ze-turbine kanye nejeneretha ezingamelani nokugqwala, kanye nezindlela ezintsha ezifana ne-EGS kanye ne-closed-loop zandisa izindawo zokuthuthukiswa. Ngokuhambisana nokusungula izinto ezintsha kanye nokwenza izinto zedijithali okuqhutshwa yi-AI, izitshalo ezingaphansi komhlaba ziya ngokuya zithembeka, zisebenza ngendlela efanayo, futhi zincintisana. Emashumini eminyaka ezayo, inhlanganisela ye-superhot geothermal, ukwakheka kwesistimu okuhlakaniphile, kanye nokusetshenziswa kokushisa okuhlanganisiwe kungenza i-geothermal ibe yinsika ebalulekile yamandla ahlanzekile—ezinzile, ekhipha ugesi omncane, futhi ekulungele ukusekela izidingo zikagesi zezimboni kanye nokushisa ngendlela eqhubekayo.
Uma ufisa, ngingavumelanisa lesi sihloko nomongo wase-Indonesia (isikhala somlilo esingaba khona, izinselele zelayisensi, kanye nezibonelo zokusetshenziswa kwensimu) noma ngengeze uhlu lwezinkomba kanye nedatha yezinombolo (ukusebenza kahle, izinga lokushisa, kanye nezindleko).
