Absolute kusefa uye kufefeta hama

Mukusarudza kwesefa imba/sefa chinhu, hazvina kukwana kana uchingofunga nezvesefa chiyero uye saizi yeimba yekusefa, asi zvakare inofanirwa kufunga nezve kusefa inoshanda.

1.Nominal rating :

Kare, mwero wezita waishandiswa kutsanangura kurongeka kwesefa.

Zvisineyi, chiyero chezita chine humbowo hushoma hwemashandisirwo ekushandisa.Kuedza kunoratidza kuti zvidimbu zvetsvina zvine dhayamita ye200um zvinogona zvakare kupfuura nepakati pesefa element ine niminal rating ye10um mune dzimwe nguva.Nokudaro, kukosha kweiyo norminol filter rating kwete kufananidzira, saka yakabviswa ikozvino

2.Absulute rating:

Absolute Rating zvakare mucherechedzo wakajairika wekusefa zvakatemwa zvakatemwa. Mhepo yakakwana inoreva kuti iyo yakakura chidimbu dhayamita inogona kupfuura nepasefa, Muma microns, ndiyo yakakura pore saizi yesefa, kana iyo Particulate nyaya yakakura kupfuura saizi yepore iyi, haigone kupfuura nepasefa element, saka inosefa kuti ibvise.Mhedziso yekuyera ndeyechokwadi kupfuura mwero wezita uye inotaridza zvirinani hudiki hudiki hunogona kubatwa nesefa，Asi zvimedu hazvisi zvese zvakatenderedzwa.Hadzina kujairana muchimiro，Pamusoro pezvo, buri resefa yechinhu chesefa rinogona kunge risina kuenzana nekuda kwemaitiro ekugadzirisaSaka panogona kunge paine hove hombe dziri kubuda mumambure.Naizvozvo, pane mukaha uripo pakati pechiyero chakakwana uye kushandiswa kunoshanda

3.Beta Rating:

Parizvino, chiratidzo chinonyanyozivikanwa chekusefa nemazvo uye kushanda kwayo iBeta Rating (Beta value). The Beta Rating ireshiyo yekusefa, inova reshiyo yenhamba yemamwe twuma pore size particles ari mumvura iri kumusoro nekudzika kwerwizi. yechinhu chesefa, Paunenge uchiona kusefa kweiyo sefa chinhu.Chekutanga, huwandu uye saizi yezvimedu zvehutsvina zvehumwe saizi muvhoriyamu yevhoriyamu mumafuta ekumusoro eiyo sefa element inowonekwa nechidimbu chekuyeresa chiridzwa.Zvadaro, nhamba uye vhoriyamu yezvimedu mumafuta ezasi eiyo sefa element zvinoyerwa.Zvadaro, nhamba yekumusoro inoparadzaniswa nenhamba yezasi, uye chiyero chakawanikwa ndiyo filtration ratio

Semuyenzaniso, panoonekwa kukwidza kwechikamu chesefa, nhamba yezvidimbu zvine saizi yakakura kupfuura 5 microns i10. Mushure mekusefa nechinhu chesefa, nhamba yezvikamu zviri pamusoro pe5 microns inoyerwa muzasi i1, ipapo hama. kusvika pachiyero chechokwadi che 5 microns, filtration ratio yefilter element ndeye 10/1 = 10, yakanyorwa se β5 = 10. Zviri pachena, iyo yakakura iyo β kukosha, zviri nani kugadzirisa. kusvika pakusefa nemazvo, asiwo kuona chiyero chekusefa.Kutora 5 micron particles semuenzaniso, kana kumusoro kwerwizi kuyerwa zvimedu zviri 1 miriyoni/mL, zvino inowirirana yakadzika uwandu nekusefa inoratidzwa mutafura inotevera:

Kana kusefa kwesefa kwechikamu chesefa kuchimiririrwa neperesenti, iyo yekutendeuka formula ndeye ((β-1)/ β-kukosha) x 100. Semuenzaniso, mutafura iri pamusoro, iyo β-kukosha imakumi maviri, uye muzana wekutendeuka. kwesefa kunyatsoshanda ndiko201)/ 20=19/20=0.95,0.95*100=95%

Naizvozvo, kune sefa chinhu chine kusefa chaiko kwe5 microns, kana iyo β kukosha iri gumi, iyo yekusefa percentage i90%, uye kune twutsvina hune saizi yakakura kupfuura kana yakaenzana ne5 microns, 90% inogona kusefa. zvakakosha kuziva kuti kunyangwe iyo beta inogona kutibatsira kuti tinzwisise kusefa kwesefa, ine kukosha kwekunongedza, asi iyo beta inoratidza kugona kusefa kungave kwakasiyana zvishoma nekuchinja kwekuyerera uye tembiricha, kusarudzwa kwemidziyo yekusefa, inofanirwa kuterera. kune kushandiswa kwekushisa, iyo chaiyo yekuyerera mwero, zvinhu iyo yekusefa mhedzisiro yeviscosity uye zvinoenderana nemamiriro ezvinhu

Pamusoro pezvo, iyo β kukosha haigone kutsanangura kutakura kwesefa, mukushandiswa, kana iyo inosvibisa inotakura simba iri diki, uye zvinosvibisa zviri muzvinhu zvinorema, iyo sefa element ichavharika munguva pfupi, zvichizokanganisa mashandisiro ekushandisa.Naizvozvo, saka kana iwe uchitenga, iwe unofanirwa zvakare kuziva iyo inosvibisa inotakurakugona kwesefa element