Nā HFO

ʻO nā Hydrofluoroolefins (HFOs) he mau hui organik unsaturated i haku ʻia me ka hydrogen, fluorine a me ke kalapona. ʻAʻole e like me nā hydrofluorocarbons kuʻuna (HFCs) a me nā chlorofluorocarbons (CFCs), i saturated, ʻo nā HFO he olefins, i ʻike ʻia hoʻi he alkenes. Ke hoʻomohala ʻia nei nā HFO ma ke ʻano he mau refrigerants "hanauna ʻehā" me ka hiki ke hoʻomehana honua haʻahaʻa loa ʻo ia hoʻi 0.1% o nā HFCs. He pōkole ke ola o nā huahana HFO i ka lewa a ua hoʻokaʻawale ʻia he ʻole ODP (Ozone Depletion Potential) a me GWP haʻahaʻa (Global Warming Potential), e hāʻawi ana i kahi koho ʻē aʻe e pili ana i ke kaiapuni i nā CFCs, HCFCs a me HFCs.
ʻO ka huʻa polyurethane i hana ʻia me ka hoʻohana ʻana i nā HFO ma ke ʻano he mea puhi e hoʻohana nui ʻia i nā ʻoihana kaʻa a me ke kūkulu ʻana ma ke ʻano o nā huʻa paʻa a paʻa hoʻi e hoʻokele nei i ka ulu ʻana o ka mākeke HFO.