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To avoid use and emissions of both hydrofluorocarbons (HFCs) and hydrochlorofluorocarbons (HCFCs), a variety of climate-friendly, energy efficient, safe and proven alternatives are available today. In fact, for most applications where HFCs and HCFCs are still used in the world, more climate friendly alternatives could potentially be used. However, due to different thermodynamic and safety properties of the alternatives, there is no "one size fits all" solution. The suitability of a certain alternative must be considered separately for each category of product and equipment and in some cases also taking into account the level of ambient temperature at the location where the product and equipment is being used.
The climate impacts of a substance is commonly expressed as the global warming potential (GWP); the lower the GWP, the more climate-friendly. The GWP values of the various HFCs or HCFCs are generally in the thousands. Conversely, GWPs of climate-friendly alternatives are much lower. The most commonly used alternatives to HFCs and HCFCs and their characteristics are listed in the table below.
Global Warming Potential (GWP)
Properties to be addressed
Ammonia (NH3, R717)
R32 (an HFC)
The above informatin is from https://ec.europa.eu.
Refrigerant R32 and Hydrocartons refrigerant R290 ,R600a is available in Zhejiang Guomao Industrial Co.,Ltd.
HFO-1234yf is produced by some manufacturers in China now. The price of HFO-1234yf is about 15times of the price of R-134a. In addition, the patent of R-1234yf is owned by some leading suppliers of refrigerant such as Honeywell and Chemours now in some countries.