Kupisa kuchinjisa zvimiro zveakavhurika cell metal foams

Metal foam imhando ye multifunctional composite metal material ine imwe nhamba, imwe saizi yemapores, uye imwe porosity musimbi matrix. Foam simbi ine yakasarudzika hunhu senge hombe chaiyo nzvimbo, hombe porosity, uye diki density, uye ine multifunctional composite hunhu senge kupisa (yakavhurika-sero), kupisa kupisa (yakavharwa-sero), kunyudza inzwi uye kudedera kunyorova, kureruka. , yakakwirira chaiyo simba, electromagnetic shielding, nezvimwewo, uye imhando yezvimiro uye zvinoshanda zvinhu zvinosanganisa zvimiro zve thermophysics, mechanics, acoustics, uye magetsi.
Foryakavhurika-sero simbi furo, iyo yakakwirira porosity uye yakaoma-matatu-dimensional mesh chimiro inoita kuti ive yakanaka kwazvo yekupisa kupisa uye kupisa kwakanyanya kwekutamisa kushanda zvakanaka, iyo ine tarisiro yakakura kwazvo yekushandisa mumunda we compact heat exchangers, microelectronic mudziyo kutonhora, zvichingodaro. Kune iyo yekupisa yekupisa zvimiro zveyakavhurika-sero foam simbi, chimiro chayo chekutsvagisa chinoongororwa uye kuongororwa kubva munzvimbo dzekushandisa dze compact heat exchangers.
Metal furokune compact heat exchangers
Iyo yakakwidziridzwa yekuchinjisa kupisa zvimiro zvefuro resimbi zvagara zvichizivikanwa. Kana gasi kana mvura ichiyerera nemumakomba, kupisa kunotamiswa uye kuchinjaniswa nenzira yekumanikidzirwa kutenderera pakati pesimbi furo ine yakavhurika-sero chimiro uye mvura. Kune rumwe rutivi, iyo yakaoma-dimensional mesh chimiro chesimbi furo inoita kuti isingaiti mutsara wemvura, uye dhigirii yemhirizhonga inosimbiswawo, nokudaro inosimudzira nzvimbo yakasimba kusvika kune mvura munzvimbo yakakwirira yekupisa kupisa; kune rumwe rutivi, iyo furo simbi yakakura chaiyo yepamusoro nzvimbo zvakare chikonzero chakakosha chesimbi ine yakanaka yekupisa kupisa kuita. Parizvino, chidzidzo chesimbi foam ye compact heat exchanger transfer performance inonyanya kutarisisa pamhepo-padivi yakakwidziridzwa kutamisa kupisa uye refrigerant-side inosimudzira kupisa kupisa.
Kune iyo mhepo-padivi yakakwidziridzwa kupisa kupisa zvimiro zvefuro resimbi, furo resimbi rinoshandiswa pachinzvimbo chezvimbi zvekupisa kupisa mumashandisirwo panoshandiswa zvimbi zvechinyakare, sekutonhodza zvinhu zvemagetsi, ndiro dzinopisa kupisa, uye finned heat exchangers. Mune compact heat exchangers, kuyerera kwekushisa kwekutamisa zvivakwa pari zvino zvinodzidzwa zvakanyanya zvemhangura nealuminium furo simbi dzine pore densities kazhinji isingasviki makumi mana muzana uye porosities ye70% kana kupfuura.
Pane imwe saizi yepore, mwero wekutamisa kupisa unowedzera nekuwedzera kweporosity uye inotonga. Kune rumwe rutivi, kune imwe porosity, iyo yakakwirira yepore density, iyo inoderedza kupisa kwekufambisa kushanda, izvo zvingave zvichikonzerwa nehukuru hwakanyanya kukura. Iyo pore chimiro paramita ye porosity, pore density, uye dhayamita yepore ndizvo zvinhu zvikuru zvinokanganisa kupisa kupisa kuita kwe.furo dzesimbi. Pakushandiswa kwefuro resimbi mukutonhodza zvikamu zvemagetsi, mhedzisiro yesimbi foam porosity uye pore dhayamita pamhepo yekupisa yekupisa yakaongororwa ne orthogonal kuyedza. Mhedzisiro yacho inoratidza kuti pasi pekumanikidzwa kutenderedzwa, kupisa kwekupisa kwesimbi yefuro kunoenderana nechimiro chepore, umo saizi yepore ine simba guru.
Mimwe mibairo yekutsvagisa inoratidza kuti kunyangwe iyo furo simbi ine basa rakasimba mukusimudzira kupisa kupisa, kukura kwekupokana hakuna kushaya hanya pamwe nekukura kwekuita kwekupisa. Iko kupisa kwekupisa kwesimbi yefuro kunovandudzwa zvakanyanya pakurasikirwa kudiki kwekumanikidza, uye kurasikirwa kwekumanikidza kunowedzera nekuwedzera kwepore density. Mhedzisiro yechidzidzo inodzidzisa dhizaini uye kugadzirwa kweakareruka uye compact yakakwirira-inoshanda heat exchangers. Ongororo yekuyedza yefoam metal heat exchangers uye yakafinhwa kupisa kwekupisa kwehukuru hwakafanana yakaitwa, uye zvakaonekwa kuti pasi pemamiriro akafanana ebvunzo, iyo furo simbi inopisa kupisa yakanga isinganyanyi kushanda pane yakafinhwa kupisa inotsinhanisa, uye kurasikirwa kwekumanikidza uye. friction coefficient yaive yakakwira kupfuura iyo yefinned heat exchanger. Iyo porous foam simbi ine pachena inosimbisa mhedzisiro pane convective kupisa kupisa, uye iyo yekusimbisa mhedzisiro inoderera nekuwedzera kwenhamba yeReynolds; iyo porous foam simbi inoita kuti kuyerera kwemvura kuwedzere zviri pachena, asi kuwanda kwekuwedzera kwekupokana kunoderera nekuwedzera kwenhamba yeReynolds. Kusimbaradza kwakazara kweiyo convective kupisa kupisa uye kuwedzera mukudonha kwekumanikidza mukuyerera kwezvinhu zviviri zvinogona kuoneka,porous furo simbiinonyanya kukodzera mvura ine nguva diki yekuyerera. Foam simbi ine basa remhepo-parutivi inosimudzira kupisa kupisa, asi kupisa kwekufambisa kuita kwekusimudzira panguva imwe chete, kuramba kwakawedzerawo, uye kuita kwese kwakaipa kupfuura zvimbi zvechinyakare. Tsvagiridzo inoratidza kuti foam simbi yakakodzera kune yakaderera-kuyerera zvisingawanzo zviitiko. Naizvozvo, furo simbi yemhepo-parutivi yakakwidziridzwa kupisa kupisa inoda kufunga nezvenguva dzekunyorera, uye haigone kuita neupofu kuita yechinyakare fin kupisa kupisa kumwe kutsvagisa.

Iyo simbi furo inogona zvakare kuita basa mukusimudzira kupisa kwekushisa kwefiriji nekuchinja kwechikamu. Zvigumisiro zvinoratidza kuti kana porosity iri yechokwadi, kupisa kwekushisa kunowedzera kaviri sezvo pore density inoderera kubva pa20 kusvika ku40 PPI uye saizi yepore inodzikira, nekuda kwekunaka kwesero chimiro chine nzvimbo yakakura uye yakanyanya kuvhiringika. Pakuyerera kwepamusoro, iyo inopisa inopisa kupisa coefficient inochengetedza yakadzikama uye inononoka kuwedzera nekuwedzera kuoma. Nekuwedzera zvishoma nezvishoma musimba rekushanda, chiitiko chekupisa chinopisa pakuoma kwakaderera chakafanana nekuvira kwepasi, kureva, kupisa kwekushisa kunowedzerwa nekuwedzera kwekumanikidzwa, asi kukwira kunokwira kusvika pamwero wakati kunobata basa rinoipa mukuvira. kupisa kupisa. Iyo yekupisa yekupisa coefficient yemhangura foam chubhu inokwira zvakapetwa katatu pane iyo yemachubhu emwenje. Panyaya yefiriji yakachena, kuvapo kwesimbi yefuro kunowedzera kuyerera kwekupisa kupisa, uye kupisa kwekushisa kunowedzerwa kusvika ku185%. Panyaya yemamiriro emafuta ane mafuta, mhedzisiro yesimbi furo yekusimbisa kupisa kupisa kunopera simba; pasi pemamiriro akafanana, zvichienzaniswa ne5PPI furo simbi, 10PPI furo simbi inogona kuwedzera kupisa kutamisa coefficient kusvika 0.6 nguva, uye diki pore saizi inogona kuvandudza kuyerera kuri kufashaidza kupisa kupisa coefficient.
Mhedzisiro yehuwandu hwekuyerera uye maviri-chikamu kuoma kwemvura painoyerera condensation pressure inodonha uye kupisa kweyekutamisa coefficient yakaongororwa zvizere. Mhedzisiro inoratidza kuti kudonhedzwa kwemushonga wemukati-yakazadzwa annular metal foam tube yakakura kwazvo kupfuura iyo yechiedza chubhu, uye kudonha kwekumanikidza kunowedzera nekukurumidza uye kusingaite nekuwedzera kwehuwandu hwekuyerera uye kuoma. Iyo condensation yekupisa kupisa coefficient yemukati-yakazadzwa nemadziro simbi foam chubhu yakakura kupfuura iyo yemwenje chubhu, uye kupisa kwekutamisa coefficient kunowedzera nekuwedzera kwehuwandu hwekuyerera uye kuoma, uye kuyerera kwe condensation kupisa kupisa coefficient yerudzi urwu. yemachubhu akasimbiswa inopeta nekaviri kupfuura yechubhu yechiedza. Nokuti iyo capillary effect iri pachena, iyo pore density ye130PPI yakasimbiswa chubhu ndiyo yakanakisa mhedzisiro, kune iyo light chubhu 3.06 nguva, 40PPI chubhu inonyanya kufanana nechimiro chepasi-ribbed chubhu senzira yekusimbisa.
Mune compact heat exchanger,furo resimbiinogona kushandiswa zvizere kusimbisa basa rekutamisa kupisa, asi chidzidzo chakaratidza kuti kupikisa maitiro ekukura kwesimbi furo kunokoshawo, kudiwa kwekuita kwakazara kuongorora kushandiswa kwesimbi yefuro mune compact heat exchanger. Pamusoro pezvo, pamberi pemafuta ane mafuta, simbi dzefuro dzinogona kutungamira mukudzikira kwekupisa, uye kukwidziridzwa kwekupisa kwemafuro esimbi ekuchinja kwechikamu kuchinjisa kupisa kwemafiriji kunoda kutariswa maererano nemhedzisiro yemafuta.