Mahydrofluoroolefins (HFOs) iboka remakemikari anomiririra chizvarwa chechina chemagasi ane fluorinated. Makemikoro aya akagadzirwa zvakanyanya kuderedza kukanganisa kwezvakatipoteredza uku achichengetedza mwero wekushanda unodiwa mumashandisirwo akasiyana-siyana emaindasitiri. MaHFO ave akakosha zvakanyanya semafiriji,zvinhu zvinoputira, zvinopisa, uye zvinonyungudutsa, zvichipa imwe nzira inogara kwenguva refu pane dzakatangira.
Chii chinonzi HFOs?
MaHFO zvinhu zvisina kuguta zvakasikwa zvinoumbwa nemaatomu ehydrogen, fluorine, uye kabhoni. Maumbirwo azvo emakemikari asina kuguta, ane chisungo chimwe chete pakati pemaatomu ekabhoni, anoasiyanisa nezvizvarwa zvekare zvemagasi ane fluorinated, akadai sehydrofluorocarbons (HFCs) uye chlorofluorocarbons (CFCs). Musiyano uyu wechimiro unoita kuti maHFO asagadzikana mumhepo, zvichiita kuti akwanise kupwanyika nekukurumidza uye kuderedza zvakanyanya kugona kwawo kupisa kwepasi rose (GWP).
Mashandisirwo eHFOs
MaHFO anogona kushandiswa zvakasiyana-siyana uye anoshandiswa mumaindasitiri akakosha akati wandei:
Mafiriji
HFO inoshandiswa zvakanyanya mufiriji nemhepo inotonhodza nekuda kwekusakwana kwayo kweGWP uye kushandiswa zvakanaka kwesimba. Semuenzaniso, inowanzoshandiswa mumhepo inotonhodza yemotokari uye mumitambo yefiriji yemabhizimisi.
Mukugadzira furo repolyurethane, HFO inoshandiswa sechinhu chinoputira kuti iwedzere uye igadzire chimiro chefuro. Zvinhu zvinoputira zvinobva kuHfo, zvakaita seHFO-1336mzz(Z), zvinofarirwa nekuda kwehunhu hwazvo hwekupisa uye kusanyanya kukanganiswa kwezvakatipoteredza, zvichiita kuti zvikwanise kushandiswa pakudzivirira furo respray uye kugadzira hardboard.
Zvinofambisa
MaHFO anoshandiswa sezvipfukuto mukushandiswa kweaerosol, kusanganisira zvigadzirwa zvekuchengetedza muviri, mishonga, uye maspray emumaindasitiri. Kuderera kwavo kweGWP uye kusabvira kunoita kuti ave akachengeteka uye ane hushamwari kune nharaunda kupfuura zvinopfukuto zvechinyakare zvakaita seHFC.
Zvinonyungudutsa
Mamwe maHFO formulations anoshandiswa se solvents mukuchenesa kwemaindasitiri, zvichipa simba rakawanda re solvent pamwe nekuderedza chepfu uye njodzi dzezvakatipoteredza.
Mabhenefiti eHFOs
HFOs dziri kugamuchirwa zvakanyanya nekuda kwezvakanakira zvakawanda:
Kukwanisa Kudziyisa Kwepasi Pose Kuderera (GWP):
MaHFO ane GWPs dzinotangira pasi pe1 kusvika ku10, kudzikira kukuru zvichienzaniswa nemaHFCs, ayo anogona kuva neGWPs dzinopfuura chiuru. Izvi zvinoita kuti maHFOs ave chishandiso chakakosha mukurwisa shanduko yemamiriro ekunze.
Nguva pfupi yehupenyu hwemhepo:
Nenguva dzehupenyu hwemhepo dzinoyerwa mumazuva kusvika kumavhiki, maHFO anoderedza kukanganisa kwezvakatipoteredza kwenguva refu zvichienzaniswa nemaHFC nemaCFC, ayo anogara kwemakore kana makumi emakore.
Kutevedzera Mutemo:
Makambani eHFO anoenderana nezvirongwa zvepasi rose zvemitemo zvakaita seKigali Amendment to the Montreal Protocol, iyo inorayira kubviswa kwezvinodhaka zvine GWP yakawanda.
Kushanda Nesimba Zvakanaka:
Masisitimu anoshandisa mafiriji eHFO anowanzo ratidza kuvandudzwa kwesimba remagetsi, kuderedza mari yekushandisa uye kuderedza kuburitswa kwecarbon.
Kuchengetedzeka uye Kuenderana:
MaHFO kazhinji haana chepfu uye anoenderana nemasisitimu aripo akagadzirirwa maHFC, zvichiita kuti shanduko ive nyore kumaindasitiri.
Mhedziso
Hydrofluoroolefin (HFO) ibudiriro yakakosha mumunda wemagasi ane fluorine, ichigadzirisa matambudziko ezvakatipoteredza uye mashandiro. Basa ravo mumafiriji, mabhururi, mapropellant uye zvinonyungudutsa rinoratidza kushanduka kwavo uye kukosha kwavo muindasitiri yemazuva ano. Nekuramba vachigadzira zvinhu zvitsva uye vachitevedzera Zvinangwa zveKugara Zvichienderera Mberi pasi rose, HFO yakagadzirira kutungamira shanduko kuenda kune ramangwana rakasvibira uye rinogara kwenguva refu.
Nguva yekutumira: Mbudzi-27-2024