Filterka HEPA waa shaandhada ugu weyn ee loo isticmaalo sifayaasha hawada intooda badan. Waxaa inta badan loo isticmaalaa in lagu shaandheeyo siigada walxaha yaryar ee yaryar iyo adkaha adag ee kala duwan ee xayiran ee dhexroorkoodu ka badan yahay 0.3μm. Farqiga qiimaha filtarrada HEPA ee suuqa waa mid aad u weyn. Marka lagu daro qodobbada qiimaha badeecadaha laftooda, waxaa jira xiriir gaar ah oo la leh heerka filtarrada HEPA.
filtarrada HEPA iyo wixii la mid ah waxaa loo qaybiyaa G1-G4, F5-F9, H10-H14 iyo U15-U17 marka loo eego qiyaasta Yurub ee hadda. Nooca ugu caansan ee nadiifiyaha hawada waa heerka H, kaas oo ah filtar wax ku ool ah ama ka hooseeya. H13 waxaa loo aqoonsan yahay shaandhada ugu fiican H13-14. Shaandhaynta HEPA ee darajada H13 waxay gaari kartaa wadarta waxtarka 99.95%. Wadarta waxtarka shaandhada H14 ee shaandhada HEPA waxay gaari kartaa 99.995%.
Dabcan, heerka ugu sarreeya ee nadiifinta shaandhada HEPA ee heerka Yurub waa heerka U, iyo heerka ugu fiican ee U-17 shaandhada HEPA waxay leedahay wadarta waxtarka nadiifinta ee 99.999997%. Si kastaba ha ahaatee, sababtoo ah shaandhada HEPA-ga U-grade waa qaali in la soo saaro, aad bay u baahan tahay jawiga wax soo saarka. Markaa ma jiraan codsiyo badan oo suuqa yaala.
Marka lagu daro darajada nadiifinta, shaandhada HEPA waxay leedahay qiimeynta dabka. Suuqa ayaa u kala qaybiya saddex darajo iyadoo loo eegayo heerka caabbinta dabka: mesh-ka aasaasiga ah ee HEPA mesh, dhammaan agabka mesh-ka HEPA waa kuwo aan guban karin, agabka aan gubinna waa inuu waafaqsan yahay GB8624- 1997 Class A; Shabakadda sare ee HEPA, sheyga shaandhaynta mesh HEPA waa inay ahaataa mid aan ku habboonayn GB8624-1997 Class A walxo aan guban, saxan qaybin, jir ayaa loo isticmaali karaa si waafaqsan GB8624-1997 B2 agabka guban kara. Shabakadda HEPA ee saddexda-heer ah, dhammaan agabka shabakadda HEPA waxa loo isticmaali karaa si waafaqsan GB8624-1997 agabyada darajada B3.
Marka lagu daro darajooyinka, filtarrada HEPA waxay ku yimaadaan walxo kala duwan. Alaabooyinka ugu caansan waa shan nooc: Waraaqaha shaandhada PP, warqad filter PET oo isku dhafan, dhar aan tow lahayn polyester dhalaalaysa iyo fiber galaas dhalaalay. Shanta nooc ee kala duwan ee shabakadaha shaandhaynta HEPA waxay leeyihiin faa'iidooyin iyo faa'iido darrooyin iyaga u gaar ah, meelaha ugu muhiimsan ee codsiyada sidoo kale way kala duwan yihiin. Qalabka shaandhada HEPA ee xaashida shaandhada PP ayaa si weyn loogu isticmaalaa nadiifiyeyaasha hawada sababtoo ah caabbinta aashitada iyo alkali, caabbinta daxalka, barta dhalaalka sare, waxqabadka xasilloon, sunta, ur la'aanta, qaybinta lebbiska, iska caabbinta hooseeya, waxtarka sare iyo ilaalinta deegaanka.
Ugu dambayntii, aan ka hadalno tartame shaandhaynta mesh HEPA ee hawo-sifeeye – filter ka kooban HEPA oo ay dhistay suuf shaandhaynta boodhka HEPA oo leh qolof qumbaha kaarboon hawl gal ah iyo kaarboon fiber kaarboon firfircoon. Nadiifinta hawada iyadoo la adeegsanayo shaandhada noocaan ah Qalabku wuxuu ka fiican yahay nadiifiyaha hawo-sifeeye ee HEPA marka loo eego nooca nadiifinta iyo waxtarka nadiifinta. Sidaa darteed, macaamiil aad iyo aad u badan ayaa bilaabay in ay iska dhaafaan shaandhada HEPA oo ay doortaan shaandhada hawo-sifeeye ka kooban.
Waqtiga boostada: Jan-05-2017