Indlela yokuphucula ukuhanjiswa kobushushu kwiiyunithi zokutshintsha ubushushu?

Umgaqo osebenzayo wesixhobo sokutshintshisa ubushushu: Umthamo wolwelo uqukuqela kwizikhewu ezibiyelweyo phakathi kwendawo yokutshintshiselana ngobushushu ngesantya esiphantsi kakhulu, sidala umqukuqelo osisidubedube, ngaloo ndlela kuphunyezwa umlinganiselo ophezulu wokugqithisela ubushushu. Sinokugqiba ukuba ukuhanjiswa kobushushu kuhambelana ngokusondeleyo kwimilo kunye nesakhiwo samacwecwe e-corrugated ngaphakathi kwe-heat exchanger kunye nesimo sokuhamba kwamanzi. Zeziphi iindlela ezithile ezinokusetyenziswa ekuphuculeni ukusebenza kakuhle kokuhanjiswa kobushushu bomtshintshi wobushushu?

Ipleyiti ingundoqo yokudlulisa ubushushu kwipleyitiumtshintshi wobushushu. I-conductivity yayo ye-thermal kunye ne-flow channel design inquma ngokuthe ngqo umthamo osisiseko wokudlulisa ubushushu kwaye kufuneka iphuculwe ukusuka kumthombo kuqala.

1.Khetha izinto ezine-conductivity ephezulu ye-thermal njengamacwecwe

Sinokukhetha i-304 yensimbi engenasici, i-316L yensimbi engenasici, i-alloy yobhedu kunye ne-titanium alloy njengamacwecwe. Insimbi engenasici ine-conductivity entle ye-thermal kunye nexabiso elifanelekileyo. Inamandla amakhulu, ukusebenza kakuhle kwesitampu, kwaye ayidibanisi lula kwindawo enzima.

2.Ukutshatisa ipleyiti esebenzayo isakhiwo samacangci

Uyilo lwe-corrugation yepleyiti lumisela ubume bejelo lokuhamba kwaye luchaphazela ngokuthe ngqo ukunyanzeliswa kokuphazamiseka kwamanzi (ukuphazamiseka okunamandla, ukuncipha komda womda kunye nokuphezulu kwe-coefficient yokudluliselwa kobushushu). Uhlobo lwe-corrugation kufuneka lukhethwe ngokwe-viscosity yolwelo kunye neemfuno zokuhambisa ubushushu:

3.Uyilo olunengqiqo lobuninzi bepleyiti kunye nokudibanisa umjelo wokuhamba

Inani leepleyiti limisela indawo yokufudumeza ubushushu iyonke (A), kunye nendibaniselwano yomjelo wokuhamba (inye-ipasi/emininzi-idlula) ichaphazela izinga lokuqukuqela kwamanzi. Kuyimfuneko ukuyifanisa ngokuchanekileyo ngokwe "umthwalo wokutshintshwa kobushushu": Ukubalwa kwenani leepleyiti: Ngokutsho kwefomula Q=K×A×ΔTₘ (Q ngumthwalo wokutshintshiselana kobushushu, ΔTₘ ngumahluko wobushushu belogarithmic), emva kokumisela ixabiso le-K kunye ne-ΔTₘ, ubale ngokubuyisela umva indawo efunekayo yokutshintshwa kobushushu. Ke, ngokusekwe kwindawo esebenzayo yepleyiti enye (umzekelo, indawo yepleyiti esetyenziswa ngokuqhelekileyo ngu-0.1-0.5㎡), bala inani lamacwecwe. Kuyacetyiswa ukuba ugcine i-10% -15% ye-margin ukuze umelane nokuguquguquka komthwalo wexesha elifutshane.

Ukulungelelaniswa kwendibaniselwano yeshaneli egelezayo: Ukwandisa okanye ukunciphisa inani leendlela zokuhamba ukunyusa ukuhamba kwesantya kuluhlu oluphazamisayo (Re> 300 inconywa kwindlela yokuhamba kweplate). Ukuba isantya sokuhamba siphantsi kakhulu (umzekelo, Re=150 kwindlela enye yokuhamba, ukuhamba kwe-laminar), tshintshela "kwindlela{3}} yokuqukuqela" (i-fluid ihamba ngasemva naphambili kwi-plate, iphinda kabini indlela kunye nesantya sokuhamba, kunye nokwandisa i-Re ukuya kwi-300, ngaloo ndlela ingena kwi-turbulent flow).

4.Nciphisa ubukhulu beepleyiti kwi iyunithi yokutshintshisa ubushushu

I-Thermal conductivity ichaphazeleka kakhulu bubunzima beplate ngokwayo. Uvavanyo lophando lubonise ukuba kwi-symmetrical plate exchanger heat exchanger, yonke i-0.1mm yokunciphisa ubukhulu beplate inokunyusa inkqubo yokudlulisa ubushushu nge-600W, ngelixa i-asymmetrical device inokunyuka nge-500W. Ke ngoko, phantsi kwesiseko sokuhlangabezana neemfuno zokwenziwa komatshini wokutshintsha ubushushu, ukuqina kweplate kuyilwe, kokukhona ukuhanjiswa kwe-thermal.

5.Imilo yecandelo lamacangci

Nangona unikezelo loxinzelelo ngexesha loxinzelelo lufana xa umnqamlezo onamalahle{0}}icandelo linonxantathu, i-coefficient yokuhambisa ubushushu yepleyiti ye-herringbone, ekunzima ukuyiqhuba, iphezulu. Ukongezelela, i-angle enkulu yoyilo lwe-corrugated, i-high speed ye-flow medium kumjelo wokuhamba phakathi kwamasebe e-plate, ngoko ke i-coefficient yokudlulisa ubushushu iya kuba nkulu.

6.Coca isikali kwipleyiti ngexesha

Xa isikali kwi-plate sikhulu kune-1mm, ukuhanjiswa kobushushu ngokubanzi kwezixhobo kuya kuncitshiswa nge-10%. Ngoko ke, izixhobo zokucoca kufuneka zongezwe kwindawo yokungena kwaye umtshintshi wokushisa kufuneka uhlambuluke rhoqo. Ngaloo ndlela kuphela ubuninzi besikali kwi-plate buncitshiswe kwaye ukusebenza kakuhle kokutshintshisana kobushushu kunokuzinziswa kwinqanaba elilinganayo.