HFO和HFC的区别在于，HFO代表氢氟烯烃，而HFC代表氢氟碳化合物。 两者都是含有氢、氟和碳原子的合成化合物，但 HFO 的碳原子之间至少有一个双键，而 HFC 则只有单键。 这使得 HFO 比 HFC 更具反应性和稳定性，但也更环保。
HFO 的臭氧消耗潜值 (ODP) 为零或接近于零，全球变暖潜值 (GWP) 非常低，范围为 1 至 10。HFC 的 ODP 为零，但 GWP 较高，范围为 100 至 4000。因此，HFO 被视为 第四代制冷剂，而HFCs是第三代制冷剂。 氢氟烯烃正在开发和采用作为氢氟碳化合物的替代品，氢氟碳化合物正在根据《蒙特利尔议定书》基加利修正案逐步淘汰。
HFO和HFC具有与制冷剂相似的优点，如高稳定性、低毒性、不易燃、沸点低、汽化潜热高以及与润滑剂和金属相容等。 它们还广泛用于其他应用，例如发泡剂、溶剂、灭火器和气溶胶推进剂。 然而，HFO和HFC可能具有不同的热力学和物理特性，例如压力、密度、粘度、热容和导热率，这会影响它们的性能和效率。 因此，HFO和HFC的选择和使用需要仔细考虑技术和经济方面的因素。
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.
