Kutheni umphunga oshushu kakhulu kufuneka uthotywe ube ngumphunga ogcweleyo?

01. Umphunga ogcweleyo
Xa amanzi efudunyezwa ukuba abile phantsi koxinzelelo oluthile, amanzi aqala ukuba ngumphunga kwaye ngokuthe ngcembe aguquke abe ngumphunga. Ngeli xesha, ubushushu bomphunga bubushushu bokuhlala, obubizwa ngokuba "ngumphunga ogcweleyo". Eyona ndawo ifanelekileyo yokuhlutha komphunga ibhekiselele kubudlelwane bomntu omnye phakathi kobushushu, uxinzelelo kunye nokuxinana komphunga.

02.Umphunga oshushu kakhulu
Xa i-steam egcweleyo iqhubeka nokufudumala kwaye iqondo lokushisa liphakama kwaye lidlula iqondo lokushisa phantsi kolu xinzelelo, i-steam iya kuba "yi-steam eshushu" kunye neqondo elithile lokushisa okukhulu. Ngeli xesha, uxinzelelo, ubushushu, kunye nokuxinana azinayo imbalelwano enye ukuya komnye. Ukuba umlinganiselo usasekelwe kumphunga ogcweleyo, impazamo iya kuba nkulu.

Kwimveliso yokwenyani, uninzi lwabasebenzisi baya kukhetha ukusebenzisa izixhobo zamandla obushushu ukufudumeza kwindawo esembindini. I-steam eshushu kakhulu eveliswa ngumatshini wamandla iphezulu-ubushushu kunye noxinzelelo oluphezulu. Kufuneka idlule kwisixokelelwano sesikhululo sobushushu kunye nokunciphisa uxinzelelo ukuze ijike umphunga oshushu kakhulu ube ngumphunga ogcweleyo phambi kokuba usiwe Kubasebenzisi, umphunga oshushu kakhulu unokukhulula kuphela obona bushushu bubambekayo buluncedo xa upholisiwe ukuya kwindawo ehluthisiweyo.

Emva kokuba umphunga oshushu kakhulu uthuthwa kumgama omde, njengoko iimeko zokusebenza (ezifana nobushushu kunye noxinzelelo) zitshintsha, xa iqondo lokushisa lingekho phezulu, ubushushu buyancipha ngenxa yokulahlekelwa bubushushu, buvumela ukuba bungene kwindawo ehluthekileyo okanye engaphezulu. imeko eshushu kakhulu, kwaye emva koko uguqule. iba ngumphunga ophuphumayo.

Kutheni umphunga oshushu kakhulu kufuneka uthotywe ube ngumphunga ogcweleyo?
1.Umphunga oshushu kakhulu kufuneka upholiswe kubushushu besaturation ngaphambi kokuba ukhulule i-enthalpy engumphunga. Ubushushu obukhutshwa kubushushu obuphezulu bomphunga ukuya kubushushu bokugcwala buncinci kakhulu xa buthelekiswa ne-enthalpy yomoya. Ukuba ukushisa okukhulu komphunga kuncinci, le nxalenye yobushushu ilula ukuyikhulula, kodwa ukuba ukushisa okukhulu kukhulu, ixesha lokupholisa liya kuba lide, kwaye inxalenye encinci yobushushu inokukhutshwa ngelo xesha. Xa kuthelekiswa ne-enthalpy yomphunga womphunga ohluthisiweyo, ubushushu obukhutshwe ngumphunga oshushu kakhulu xa bupholile ukuya kwiqondo lobushushu bokuhlala buncinci kakhulu, obuya kunciphisa ukusebenza kwezixhobo zemveliso.

2.Ngokwahlukileyo kumphunga ogcweleyo, ubushushu bomphunga oshushu kakhulu abuqinisekanga. Umphunga oshushu kakhulu kufuneka upholiswe ngaphambi kokuba ukhulule ubushushu, ngelixa umphunga ogcweleyo ukhupha ubushushu kuphela ngokutshintsha kwesigaba. Xa umphunga oshushu ukhupha ubushushu, ubushushu buveliswa kwisixhobo sokutshintshiselana ngobushushu. igradient. Eyona nto ibalulekileyo kwimveliso kukuzinza kobushushu bomphunga. Ukuzinza komphunga kukulungele ukulawula ukushisa, kuba ukuhanjiswa kobushushu kuxhomekeke ikakhulu kumahluko obushushu phakathi komphunga kunye nobushushu, kwaye iqondo lobushushu lomphunga oshushu kakhulu kunzima ukuzinzisa, olungenakulungelelaniswa nolawulo lokufudumeza.

3.Nangona iqondo lobushushu lomphunga oshushu kakhulu phantsi koxinzelelo olufanayo lihlala liphezulu kunolo lomphunga ogcweleyo, amandla awo okuhambisa ubushushu aphantsi kakhulu kunomoya ophuphumayo. Ngoko ke, ukusebenza kakuhle kwe-steam eshushu kakhulu kuphantsi kakhulu kunomoya ogcweleyo ngexesha lokutshintshwa kobushushu kuxinzelelo olufanayo.

Ke ngoko, ngexesha lokusebenza kwesixhobo, iingenelo zokuguqula umphunga oshushu ube ngumphunga ogcweleyo nge-desuperheater yodlula izinto ezingeloncedo. Iinzuzo zayo zinokushwankathelwa ngolu hlobo lulandelayo:

I-coefficient yokudlulisa ubushushu bomphunga ogcweleyo uphezulu. Ngethuba lenkqubo yokudibanisa, i-coefficient yokudlulisa ukushisa iphezulu kune-coefficient yokudlulisa ukushisa kwe-steam ephezulu kakhulu ngokusebenzisa "i-superheating-heat transfer-cooling-saturation-condensation".

Ngenxa yobushushu obuphantsi, umphunga ogcweleyo uneenzuzo ezininzi ekusebenzeni kwezixhobo. Inokonga umphunga kwaye iluncedo kakhulu ekunciphiseni ukusetyenziswa komphunga. Ngokubanzi, umphunga ogcweleyo usetyenziselwa ukutshintshiselana ngobushushu kwimveliso yeekhemikhali.