Q: Ungahlukanisa kanjani phakathi kwesitimu esigcwele kanye nesishifu esishisayo?

A:

Kalula nje, i-steam generator iyi-boiler yezimboni eshisa amanzi ngezinga elithile ukuze ikhiqize isitimu esiphezulu.Abasebenzisi bangasebenzisa isitimu ukukhiqiza izimboni noma ukufudumeza njengoba kudingeka.

Amajeneretha e-Steam abiza kancane futhi kulula ukuwasebenzisa.Ikakhulukazi, amajeneretha esitimu segesi namajeneretha kagesi asebenzisa amandla ahlanzekile ahlanzekile futhi awangcolisi.

Lapho uketshezi luhwamuka endaweni evaliwe elinganiselwe, ama-molecule awuketshezi angena esikhaleni ngenhla ngokusebenzisa uketshezi olungaphezulu futhi abe ama-molecule omhwamuko.Njengoba ama-molecule e-steam enyakaza okushisayo, ashayisana wodwa, udonga lwesitsha nendawo ewuketshezi.Lapho eshayisana nendawo ewuketshezi, amanye ama- molecule akhangwa ama- molecule awuketshezi futhi abuyele oketshezini abe ama- molecule awuketshezi..Lapho kuqala ukuhwamuka, inani lama- molecule angena emkhathini likhulu kunenani lama- molecule abuyela oketshezini.Njengoba ukuhwamuka kuqhubeka, ukuminyana kwama-molecule omhwamuko emkhathini kuyaqhubeka nokwanda, ngakho inani lama-molecule abuyela oketshezini nalo liyakhula.Uma inani lama-molecule angena esikhaleni ngeyunithi ngayinye yesikhathi lilingana nenani lama-molecule abuyela oketshezini, ukuhwamuka nokufiphala kusesimweni sokulingana okuguquguqukayo.Ngalesi sikhathi, nakuba ukuhwamuka nokufiphala kusaqhubeka, ukuminyana kwamangqamuzana omhwamuko esikhaleni akusakhuli.Isimo ngalesi sikhathi sibizwa ngokuthi isimo sokugcwala kwendawo.Uketshezi olusesimweni sokugcwala lubizwa ngokuthi uketshezi olugcwele, futhi umhwamuko walo ubizwa ngokuthi isitimu esomile (esibizwa nangokuthi isitimu esigcwele).

Uma umsebenzisi efuna ukuzuza ukulinganisa nokuqapha okunembe kakhudlwana, kuyanconywa ukuthi akuphathe njengesitimu esishisa kakhulu futhi kunxeshezelwe izinga lokushisa nokucindezela.Nokho, uma kucatshangelwa izinkinga zezindleko, amakhasimende angaphinde anxephezele ngezinga lokushisa kuphela.Isimo esikahle sokugcwala kwesitimu sibhekisela ebudlelwaneni obuhambisana eyodwa phakathi kwezinga lokushisa, ukucindezela kanye nokuminyana kwesitimu.Uma eyodwa yazo yaziwa, amanye amanani amabili ayalungiswa.Isitimu esinalobu budlelwano sigcwele isitimu, ngaphandle kwalokho singathathwa njengesitimu esishisa kakhulu ukuze kulinganiswe.Empeleni, izinga lokushisa lomusi oshisa kakhulu lingaba phezulu, futhi ingcindezi ngokuvamile iphansi ngokuqhathaniswa (isitimu esigcwele kakhulu), 0.7MPa, 200°C isitimu sinjena, futhi sishisa kakhulu.

Njengoba ijeneretha yesitimu iyithuluzi lamandla ashisayo elisetshenziselwa ukuthola isitimu sekhwalithi ephezulu, inikeza isitimu esikhiqizwa izinqubo ezimbili, okuyisitimu esigcwele kanye nesitimu esishisa kakhulu.Omunye angase abuze, uyini umehluko phakathi kwe-steam egcwele kanye ne-superheated steam ku-generator ye-steam?Namuhla, uNobeth uzokhuluma nawe mayelana nomehluko phakathi kwesitimu esigcwele kanye nesitimu esishisa kakhulu.

1. Isitimu esigcwele kanye nesitimu esishisa kakhulu kunobudlelwano obuhlukile nezinga lokushisa nokucindezela.
Isitimu esigcwele isitimu esitholakala ngokuqondile ekushisiseni amanzi.Izinga lokushisa, ingcindezi, kanye nokuminyana kwesitimu esigcwele kuhambisana nokukodwa.Izinga lokushisa lesitimu ngaphansi kokucindezela okufanayo komkhathi ngu-100°C.Uma izinga lokushisa eliphezulu eligcwele isitimu lidingeka, vele ukhuphule umfutho we-steam.
Umusi oshisa kakhulu ushiswa kabusha ngesisekelo somusi ogcwele, okungukuthi, umusi okhiqizwa ukushisa kwesibili.Isimusi esishisa kakhulu siwumfutho womhwamuko ogcwele ongashintshile, kodwa izinga lokushisa lawo liyakhula futhi umthamo walo uyanda.

2. Isitimu esigcwele kanye nesishifu esishisisa kakhulu kunemisebenzi ehlukene
Isitimu esishisa kakhulu ngokuvamile sisetshenziswa ezimbonini zamandla ashisayo ukushayela izinjini zesitimu ukuze zikhiqize ugesi.
Isitimu esigcwele ngokuvamile sisetshenziselwa ukushisisa okokusebenza noma ukushintshanisa ukushisa.

3. Ukusebenza kahle kokushintshisana kokushisa kwesitimu esigcwele kanye nesishifu esishisayo kuhlukile.
Ukusebenza kahle kokudlulisa ukushisa kwesitimu esishisisa kakhulu kungaphansi kwalokho kwesitimu esigcwele.
Ngakho-ke, phakathi nenqubo yokukhiqiza, isitimu esishisa kakhulu sidinga ukuguqulwa sibe isitimu esigcwele ngokunciphisa izinga lokushisa kanye nesinciphisi sokucindezela ukuze siphinde sisetshenziswe.
Indawo yokufaka i-desuperheater kanye ne-pressure reducer ngokuvamile ingaphambili ekupheleni kwempahla esebenzisa isitimu kanye nasekupheleni kwesilinda.Ingahlinzeka ngesitimu esigcwele okokusebenza okukodwa noma okuningi okusebenzisa isitimu futhi ithuthukise ukusebenza kahle kokukhiqiza.