Hydrofluorocarbon

Hydrofluorocarbons (HFCs) bụ ihe ndị mmadụ mere nke nwere fluorine na hydrogen atọm, ma bụrụkwa ụdị ihe ndị organofluorine kacha ewu ewu. Ọtụtụ n'ime ha bụ gas na okpomọkụ na nrụgide ụlọ. A na ejikarị ha eme ihe na ikuku oyi na dị ka refrigerants; R-134a (1,1,1,2-tetrafluoroethane) bụ otu n'ime refrigerants HFC a na ejikọkarị. Iji nyere aka weghachite stratospheric ozone layer, a nabatara HFCs iji dochie chlorofluorocarbons (CFCs) dị ike karị, nke Montreal Protocol wepụrụ, na hydrochlorofluorocarbon (HCFCs) nke a na ewepụ ugbu a.^[1] HFCs nọchiri chlorofluorocarbons ochie dị ka R-12 na hydrochlorofluorocarbon dị ka R-21.^[2] A na-ejikwa HFCs mee ihe na insulating foams, aerosol propellants, dị ka ihe mgbaze na maka nchebe ọkụ.

Ha nwere ike ọ gaghị emerụ ozone dị ka ihe ndị ha na-anọchi, mana ha ka na enye aka na okpomọkụ ụwa --- na ụfọdụ dị ka trifluoromethane nwere okpukpu 11,700 nke ikike okpomọkụ nke carbon dioxide.^[3] Ọnụ ọgụgụ ikuku ha na onyinye ha na ikuku ikuku na-eme ka ikuku na-ekpo ọkụ na-abawanye ngwa ngwa [quantify], na-akpata nchegbu mba ụwa banyere nrụgide radiative ha.

1. ↑ Zaelke (11 January 2018). "Primer on HFCs": 5. 
2. ↑ Milman. "100 countries push to phase out potentially disastrous greenhouse gas", The Guardian, 22 September 2016. Retrieved on 22 September 2016.
3. ↑ Han (2012). "Treatment of the potent greenhouse gas, CHF3—An overview". Journal of Fluorine Chemistry 140: 7–16. DOI:10.1016/j.jfluchem.2012.04.012.