Guhindura ubushyuhe byashyizwe mu byiciro bite?
Ukurikije uburyo bwo guhererekanya ubushyuhe, irashobora kugabanywamo: guhinduranya urukuta rwubushyuhe, guhinduranya ubushyuhe bushya, guhuza amazi mu buryo butaziguye, guhinduranya ubushyuhe butaziguye, no guhinduranya ubushyuhe bwinshi.
Ukurikije intego, irashobora kugabanywamo: umushyushya, preheater, superheater na evaporator.
Ukurikije imiterere, irashobora kugabanywamo: guhinduranya imitwe ireremba hejuru yumutwe, guhindagura imiyoboro ihamye yubushyuhe, guhinduranya U-shusho ya U-shitingi, guhinduranya amasahani, nibindi.
Kimwe mubitandukanya igikonoshwa nigituba hamwe nisahani ihinduranya ubushyuhe: imiterere
1. Imiterere yo guhinduranya ubushyuhe nigituba:
Igikonoshwa nigituba ubushyuhe bugizwe nigikonoshwa, guhererekanya ubushyuhe bundle, urupapuro rwumubyimba, baffle (baffle) nigisanduku cyibindi bikoresho.Igikonoshwa ahanini ni silindrike, hamwe nigitereko cyimbere imbere, kandi impera zombi zumuringoti zashyizwe kumpapuro.Hariho ubwoko bubiri bwamazi ashyushye hamwe nubukonje bukonje mugukwirakwiza ubushyuhe, bumwe ni amazi imbere yigituba, bita tube side fluid;ikindi ni amazi yo hanze yigituba, bita shell side fluid.
Kugirango tunonosore coeffisente yubushyuhe bwamazi yo hanze yigituba, ubusanzwe tffles nyinshi zitondekwa mugikonoshwa.Uruzitiro rushobora kongera umuvuduko wamazi kuruhande rwigikonoshwa, bigatuma amazi anyura mumigozi inshuro nyinshi ukurikije intera yagenwe, kandi bikongera imivurungano yamazi.
Imiyoboro yo guhanahana ubushyuhe irashobora gutondekwa muri mpandeshatu zingana cyangwa kwaduka kurupapuro.Itondekanya rya mpandeshatu iringaniye irahuzagurika, urugero rwimivurungano yamazi yo hanze yigituba ni kinini, kandi coefficient de transfert nini.Gahunda ya kare yorohereza isuku mu muyoboro kandi ikwiranye n’amazi akunda kwandura.
Igikonoshwa;2-tube bundle;3, 4-umuhuza;Umutwe-5;Isahani 6-isahani: 7-baffle: umuyoboro w-8
Igikonoshwa kimwe hamwe na tube ihinduranya ubushyuhe
Igishushanyo mbonera cy'igikonoshwa kimwe-kabiri-guhinduranya ubushyuhe
2. Isahani yo guhinduranya ubushyuhe:
Guhinduranya isahani itandukanya ubushyuhe bikozwe mubyapa byinshi byashyizweho kashe ya plaque yoroheje mugihe runaka, bigashyirwaho kashe ya gasketi ibizengurutse, kandi bigashyirwa kumurongo hamwe na screw.Imyobo ine yimfuruka yamasahani hamwe nicyogajuru kigizwe nogukwirakwiza amazi.Muri icyo gihe, amazi akonje n'amazi ashyushye bitandukanijwe neza kuburyo bitandukanijwe kumpande zombi.Genda mumiyoboro, guhanahana ubushyuhe ukoresheje amasahani.
Imwe muntandukanyirizo hagati ya shell na tube ihinduranya ubushyuhe hamwe nisahani yubushyuhe: gushyira mubyiciro
1. Itondekanya rya shell na tube ihinduranya ubushyuhe:
.Iyo itandukaniro ryubushyuhe rinini cyane kandi igitutu cyuruhande ntikiri hejuru cyane, impeta yindishyi zoroshye zishobora gushyirwaho mugikonoshwa kugirango bigabanye ubushyuhe bwumuriro.
.Kureremba hejuru yubushyuhe bwo mumutwe bikoreshwa cyane, ariko imiterere yabyo iragoye kandi igiciro ni kinini.
.Hamwe nubufasha bwibisanduku byigice, bigabanijwemo ibyumba bibiri: kwinjira no gusohoka.Guhindura ubushyuhe bikuraho burundu ubushyuhe bwumuriro, kandi imiterere yabyo iroroshye kuruta iy'umutwe ureremba, ariko uruhande rw'igituba ntirworoshye gusukura
.Iyo imiyoboro inyuze hejuru yumuyoboro wa vortex, izaba ifite igikuba kinini hejuru yumuyoboro wa vortex, bityo bizamura imikorere yubushyuhe, kugeza 10000 W / m2.Muri icyo gihe, imiterere ifite imirimo yo kurwanya ruswa, kurwanya ubushyuhe bwinshi, kurwanya umuvuduko mwinshi no kurwanya ibipimo.
2. Gutondekanya ibyuma bisya ubushyuhe:
.Igikonoshwa gisanzwe hamwe na tube ihinduranya ubushyuhe ifata ahantu hanini.
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.Babiri ba nyuma bakunze gukoreshwa.
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.Nyamuneka reba kuri: uburyo bwa plaque ya plaque yubushyuhe.
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Isahani-yubushyuhe
Imwe muntandukanyirizo hagati ya shell na tube na plaque yubushyuhe: Ibiranga
1. Ibiranga igikonoshwa noguhindura ubushyuhe:
(1) Gukora neza no kuzigama ingufu, coefficient de transfert yubushyuhe ni 6000-8000W / (m2 · k).
(2) Umusaruro wose wibyuma, igihe kirekire cyakazi, kugeza kumyaka 20.
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(5) Imiterere yoroheje, ikirenge gito, uburemere bworoshye, kwishyiriraho byoroshye, kuzigama ishoramari ryubwubatsi.
(6) Igishushanyo kiroroshye, ibisobanuro biruzuye, birashoboka birakomeye, kandi amafaranga arabikwa.
(7) Ifite uburyo butandukanye bwo gusaba kandi ibereye umuvuduko, ubushyuhe n'ubushyuhe bwo guhanahana amakuru mubitangazamakuru bitandukanye.
(8) Igiciro gito cyo kubungabunga, imikorere yoroshye, isuku ndende no gukora isuku byoroshye.
(9) Emera tekinoroji ya firime ya nano-yumuriro, ishobora kuzamura cyane coefficient de transfert.
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.Intera iri hagati yicyapa irashobora guhindurwa kugirango igende neza.Imiterere irakomeye, kandi irashobora guhura nubushyuhe bwoherejwe na shell-side fluid hamwe nigipimo kinini cyogutemba cyangwa ndetse nigipimo kinini cyogutemba hamwe na pulsation nyinshi.
2. Ibiranga guhinduranya ubushyuhe:
(1) Coefficient yohereza ubushyuhe bwinshi
Kubera ko amasahani atandukanye asubijwe inyuma, hashyizweho imiyoboro igoye, kuburyo amazi ari hagati yamasahani yamenetse atemba atembera mu bice bitatu, kandi imivurungano irashobora kubyara umubare muto wa Reynolds (muri rusange Re = 50-200), bityo guhererekanya ubushyuhe Coefficient iri hejuru cyane, kandi mubisanzwe bifatwa ko ibara ry'umutuku ryikubye inshuro 3-5 iy'ubwoko bwa shell-na-tube.
(2) Impuzandengo yubushyuhe bwa logarithmic nini, kandi itandukaniro ryubushyuhe kumpera ni nto
Mu gishishwa no guhinduranya ubushyuhe, hari amazi abiri atemba kuruhande rwigituba no kuruhande.Mubisanzwe, ni cross-flow kandi ifite logarithmic ntoya isobanura itandukaniro ryubushyuhe bwo gukosora.Guhinduranya amasahani menshi birasa cyangwa bigendana, kandi ibintu byo gukosora ni hafi 0.95.Byongeye kandi, amazi ashyushye nubukonje atembera mumasahani yubushyuhe burasa no gutembera kwamazi ashyushye nubukonje mumashanyarazi.
Ubuso bushyushye kandi nta bypass bituma itandukaniro ryubushyuhe rirangira ihererekanyabubasha ry’isahani rito, kandi kohereza ubushyuhe mu mazi birashobora kuba munsi ya 1 ° C, mu gihe igikonoshwa n’ubushyuhe bwa tube muri rusange ari 5 ° C.
(3) Ikirenge gito
Isahani ihinduranya isahani ifite imiterere yoroheje, kandi ubuso bwo kohereza ubushyuhe kuri buri gice cyikubye inshuro 2-5 ubw'igishishwa cya shell-na tube.Bitandukanye na shell-na-tube ihinduranya ubushyuhe, ntibisaba ahantu ho kubungabunga kugirango hakurwemo bundle.Kubwibyo, kugirango tugere ku bushobozi bumwe bwo guhererekanya ubushyuhe, ubuso bwa etage ya plaque ihinduranya isahani ni 1 / 5-1 / 8 byi shell hamwe noguhindura ubushyuhe.
(4) Biroroshye guhindura agace ko guhanahana ubushyuhe cyangwa guhuza inzira
Igihe cyose amasahani make yongeweho cyangwa akuweho, intego yo kongera cyangwa kugabanya ahantu hohereza ubushyuhe irashobora kugerwaho.Muguhindura imiterere ya plaque cyangwa gusimbuza ubwoko bwinshi bwamasahani, uburyo bukenewe bwo guhuza ibikorwa burashobora kugerwaho, kandi ahantu ho guhanahana ubushyuhe bwa shell hamwe noguhindura ubushyuhe burashobora guhuzwa nuburyo bushya bwo guhanahana ubushyuhe.Ntibishoboka ko wongera ubushuhe bwo guhererekanya ubushyuhe bwigikonoshwa noguhindura ubushyuhe.
(5) uburemere bworoshye
Ubunini bwa plaque yubushyuhe bwa plaque ni mm 0.4-0.8 mm gusa, naho uburebure bwigituba bwa shell-na-tube ihinduranya ubushyuhe ni mm 2,2-2.5.Guhindura ubushyuhe bwa Shell na tube biraremereye cyane kuruta plaque yubushyuhe.Guhinduranya ubushyuhe bwa plaque mubusanzwe bingana na 1/5 cyuburemere bwigikonoshwa nigituba.
(6) Igiciro gito
Ibikoresho byo guhinduranya amasahani ni bimwe, ahantu ho guhanahana ubushyuhe ni kimwe, kandi igiciro kiri munsi ya 40% ~ 60% ugereranije n’igikonoshwa n’ubushyuhe bwo guhinduranya.
(7) Biroroshye gukora
Isahani yohereza ubushyuhe bwa plaque ihinduranya ubushyuhe yashyizweho kashe kandi itunganywa, ifite urwego rwo hejuru rusanzwe kandi rushobora kubyara umusaruro.Guhindura ubushyuhe hamwe nigituba ubusanzwe bikozwe n'intoki.
(8) Biroroshye koza
Igihe cyose igitutu cyumuvuduko wububiko bwa plaque yamashanyarazi irekuwe, umugozi wumuyoboro woguhinduranya amasahani urashobora kurekurwa, kandi icyuma gipima ubushyuhe gishobora gukurwaho kugirango usukure imashini.Ibi biroroshye cyane muburyo bwo guhanahana ubushyuhe bwibikoresho bigomba gusukurwa kenshi.
(9) Gutakaza ubushyuhe buke
Mu isahani ihinduranya ubushyuhe, gusa isahani yikibaho cyo guhanahana ubushyuhe ihura nikirere, gutakaza ubushyuhe ni ntangere, kandi nta ngamba zo gukumira.
