HFO和HFC的區別在于，HFO代表氫氟烯烴，而HFC代表氫氟碳化合物。 兩者都是含有氫、氟和碳原子的合成化合物，但 HFO 的碳原子之間至少有一個雙鍵，而 HFC 則只有單鍵。 這使得 HFO 比 HFC 更具反應性和穩定性，但也更環保。
HFO 的臭氧消耗潛值 (ODP) 為零或接近于零，全球變暖潛值 (GWP) 非常低，范圍為 1 至 10。HFC 的 ODP 為零，但 GWP 較高，范圍為 100 至 4000。因此，HFO 被視為 第四代制冷劑，而HFCs是第三代制冷劑。 氫氟烯烴正在開發和采用作為氫氟碳化合物的替代品，氫氟碳化合物正在根據《蒙特利爾議定書》基加利修正案逐步淘汰。
HFO和HFC具有與制冷劑相似的優點，如高穩定性、低毒性、不易燃、沸點低、汽化潛熱高以及與潤滑劑和金屬相容等。 它們還廣泛用于其他應用，例如發泡劑、溶劑、滅火器和氣溶膠推進劑。 然而，HFO和HFC可能具有不同的熱力學和物理特性，例如壓力、密度、粘度、熱容和導熱率，這會影響它們的性能和效率。 因此，HFO和HFC的選擇和使用需要仔細考慮技術和經濟方面的因素。
The difference between HFO and HFC is that HFO stands for hydrofluoroolefins, while HFC stands for hydrofluorocarbons. Both are synthetic compounds that contain hydrogen, fluorine and carbon atoms, but HFOs have at least one double bond between the carbon atoms, while HFCs have only single bonds. This makes HFOs more reactive and less stable than HFCs, but also more environmentally friendly.
HFOs have zero or near-zero ozone depletion potential (ODP) and very low global warming potential (GWP), ranging from 1 to 10. HFCs have zero ODP, but high GWP, ranging from 100 to 4000. Therefore, HFOs are considered as the fourth generation of refrigerants, while HFCs are the third generation of refrigerants. HFOs are being developed and adopted as alternatives to HFCs, which are being phased down by the Kigali Amendment to the Montreal Protocol.
HFOs and HFCs have similar advantages as refrigerants, such as high stability, low toxicity, non-flammability, low boiling point, high latent heat of vaporization and compatibility with lubricants and metals. They are also widely used in other applications, such as foam blowing agents, solvents, fire extinguishers and aerosol propellants. However, HFOs and HFCs may have different thermodynamic and physical properties, such as pressure, density, viscosity, heat capacity and thermal conductivity, which affect their performance and efficiency. Therefore, the selection and use of HFOs and HFCs require careful consideration of the technical and economic aspects.
