Musiyano uripo pakati pe shrink chubhu yekuwedzera uye shrinkless chubhu kuwedzera

Q: chii'Musiyano uripo pakati pekuwedzera chubhu uye shrinkless chubhu kuwedzera?

A: 

Musiyano pakati pekupera kuwedzera kwechubhu uyeisina kupera machubhu ekuwedzera maitiro mukutsinhana kupisa kwakakosha maererano nemisimboti uye mashandisirwo.

Shrink kuwedzera kwechubhu

Thekupera chubhu yekuwedzera maitiro ndiyo yakajairwa michina yekugadzira nzira. Munguva yekuwedzera kwechubhu, dhayamita yechubhu yemhangura inowedzera nekuda kwehukuru hukuru hwebhora rekuwedzera kana ichienzaniswa nedhayamita yemukati yechubhu, zvichikonzera kusangana kwakasimba nemafins uye nekunatsiridza kupisa kwekushisa kweanopisa. Zvisinei, rudzi urwu rwekuwedzera kwechubhu kunokonzera kuwedzera kwepakati-chikamu chemhangura yemhangura, zvichiita kuti kuderedzwa kwehurefu hwechubhu, inozivikanwa semhangura yemhangura shrinkage rate. Semuenzaniso, muindasitiri yekufemesa mhepo, shrinkage rate yemukati yakarukwa yemhangura chubhu inowanzoita 3% -4%.

Shrinkless kuwedzera kwechubhu

The isina kupera chubhu yekuwedzera maitiro inzira yekumanikidza yekuwedzera chubhu. Inobhadhara kuwedzera kwemukati wemukati wehubhu yemhangura nekuwedzera rusvingo rwemadziro, kuve nechokwadi kuti hapana shrinkage muhurefu hwehubhu yemhangura mushure mekuwedzera kwechubhu. Iyi nzira inoda kushandiswa kweiyo yakakosha gadziriso pane chubhu yekuwedzera muchina kusungirira magumo echubhu uyeHairpin-tube bottoms of the heat exchanger components before tube kuwedzera. Mushureisina kupera kuwedzera kwechubhu, shanduko inoitika mukati medhayamita uye tambo paramita yechubhu yemhangura, zvichida kusimbiswa kwekuita kwekuchinjana kupisa, kudzvanywa kwehurongwa, uye kushanda kwenguva refu kweanopisa kupisa. Mukuwedzera, mamwe magadzirirwo eisina kupera kuwedzera kwechubhu kunosanganisira mbabvu dzemukati dzinoshandisa simba rekusimba kumuviri wechubhu panguva yekuwedzera, kudzivirira kuderera kwechubhu uye kuve nechokwadi chekuwedzera kwechubhu yehuni yekuvandudza kupisa.

Muchidimbu, musiyano mukuru pakatikupera uyeisina kupera machubhu ekuwedzera maitiro ari pakuti chubhu yemhangura inodzikira mushure mekuwedzera uye kuti dhizaini yegadziriro yacho inogona kukwirisa sei mashandiro eiyo inopisa kupisa. Sarudzo chaiyo yekuita zvinoenderana nezvinodiwa zvekushandisa uye maitiro ekuita.