╨╧рб▒с>■  %'■   $                                                                                                                                                                                                                                                                                                                                                                                                                                                ье┴q ┐┬bjbjt+t+ AAa      ]ЦЦЦЦЦЦЦ╞╞╞╞╞ ╥ ╞√╢ъъъъъъъъикккккк$▒Їе:╬-Цъъъъъ╬ъЦЦъъъъъъъЦъЦъик╕ЦЦЦЦъиъ╛ъиЦЦиъ▐ АRjк┬╓├╞╞ъиProf. dr. sc. Josip Se en Akademik Mirko Zeli HOE LI METAN IZ HIDRATA BITI ENERGENT BUDUNOSTI? Sa~etak Dosadaanjim istra~iva kim radovima otkrivene su ogromne koli ine metana u hidratima u polarnim podru jinma i podmorju rubnih dijelova kontinenata, koje se procjenjuju na oko 21,0 x 1015 m3. Bogatstvo nalaziata metana u hidratima proizlazi iz injenice da se on nalazi u kristalnoj strukturi vode u kojoj su njegove molekule guae slo~ene nego u konvencionalnim i nekonvencionalnim plinskim le~iatima. Koncentracija plina po jedinici obujmu le~iata u hidratima je za 2,5 do 5 puta vea nego u konvencionalnim plinskim le~iatima. Njihovim privoenjem iskoriatavanju bi zalihe metana bile poveane u odnosu na otkrivene zalihe prirodnog plina za oko 116 000 puta. Meutim, veliki problem koji pri tomu treba rijeaiti je njihova labava stabilnost koja se naruaava izradom buaotina, pri emu se naglo nekontroliranim procesom oslobaa metan i predstavlja opasnost za ljude i tehniku. Njegovo nekontrolirano oslobaanje mogu izazvati odronjavanja ili druge vrste pomaka tla izazvane tektonskim pomacima na rubnim dijelovima kontinenata. Kako metana u hidratima ima oko 3 000 puta viae nego u Zemljinoj atmosferi, njegovo nekontrolirano oslobaanje moglo bi izazvati 10 puta vei stakleni ki efekt nego ato ga izaziva uglji ni dioksid i drasti no utjecati na promjenu klime. DHLN&┬¤∙¤∙¤ї¤6БmHH*mHmH4^`╞╓T· ╕ ┬¤¤¤ўёщщщщщ$Дdh$dh$dh 4^`╞╓T· ╕ ┬ ░╨/ ░р=!░"░#Ра$Ра%░ [(@ё (NormalCJmH <A@Є б<Default Paragraph Fonta       a┬┬ ┬   BC2C:\WINDOWS\TEMP\AutoRecovery save of Document1.asdBC"C:\My Documents\HIDRATI - 2004.doc @А``░u`(a@@@ GРЗ: Times New Roman5РАSymbol3&Р З: Arial"1М╨hнKБж╩KБж╔KБж!е└┤┤А0;  ProfBCBC■  рЕЯЄ∙OhлС+'│┘0xШа░╝╚╘рЇ   ( 4 @ LX`hpтProffrofBCfCfCf Normal.dotBCm1mMicrosoft Word 8.0@╓~@ОЯВ┬╓├@■P(┐╓├@╘bж┬╓├■  ╒═╒Ь.УЧ+,∙оD╒═╒Ь.УЧ+,∙о0ь hp|ДМФ Ьдм┤ ╝ ═тBCr1 Prof TitleШ 6> _PID_GUIDтAN{EF40A502-42B3-11D8-A54B-00E0290F8889} ■    ■   ■    !"#■   ¤   &■   ■   ■                                                                                                                                                                                                                                                                                                                                                               Root Entry         └Fаєqк┬╓├(А1Table             WordDocument        SummaryInformation(    DocumentSummaryInformation8            CompObj    jObjectPool            аєqк┬╓├аєqк┬╓├            ■                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           ■       └FMicrosoft Word Document MSWordDocWord.Document.8Ї9▓q