2019年2月25日 · The biggest con with R-404A is it’s extremely high Global Warming Potential (GWP). It’s GWP rating is three-thousand nine-hundred and twenty. This number makes it one of the absolute highest GWP refrigerant that is widely used in the world today.

制冷剂R404A是新装制冷设备上替代 氟利昂 R22 和 R502 的最普遍的工业标准制冷剂（通常为低温冷冻系统），R404A最接近于R-502的运作，它适用于所有R-502可正常运作的环境，R404A得到全球绝大多数的制冷 设备制造商 的认可和使用。 但是由于R404A与R502和R22物化性能、理论循环性能以及压缩机用油等均不相同，因此对于初装为R502和R22制冷剂的制冷设备的售后维修，如果需要再添加或更换制冷剂，仍然只能添加R502和R22，通常不能直接以R404A来替 …

Most common refrigerants like R410A, R22, and R134A have a GWP of about 2,000. That means they are about 2,000 worse greenhouse gas than carbon dioxide. GWP of the most commonly used refrigerants in HVAC like R410A, R134A, and R32 is about 2,000. Methane GWP is within the 27 to 30 GWP range.

Emission intensity for R-404A. This conversion factor should be used to report leakage from air-conditioning refrigeration units or the release to the atmosphere of other gases that have global warming potential (GWP). The primary sources are IPCC Fourth Assessment Report (AR4) and IPCC Fifth Assessment Report (AR5).

R-404A is a ternary mixture consisting of R-125, R-143a and R-134a. Their thermodynamic characteristics constitute as ideal replacement for R-502 for refrigeration sector in new facilities at low and medium temperatures. R-404A is characterized by a remarkable chemical stability and low glide temperature 0.7 ° C. Its classification is A1 group L1.

Freon™ 404A is a nonflammable, low toxicity refrigerant that carries an ASHRAE A1 safety classification and offers similar properties to the refrigerant it replaces. It has zero ozone depletion potential (ODP) and a global warming potential (GWP) of 3920. Freon™ 404A offers the best overall properties when compared to R-502.

R-404A is a "near-azeotropic" HFC blend, designed for commercial, industrial and transport refrigeration applications. It is traditionally used in new systems such as central refrigerating packs for supermarkets and hypermarkets,

2019年10月1日 · This work evaluates R-454C, R-459B, R-457A and R-455A as R-404A low-GWP substitutes in a stand-alone commercial refrigeration system for fresh product under ISO 23953-2. System is tested with and without receiver. Charge was optimized based on energy consumption tests in climatic chamber.

contain R-404A, R-507A, and R-407A, although many systems containing ozone-depleting hydrochlorofluorocarbon (HCFC)-22 still remain in use • Centralized direct expansion (DX) systems, which circulate a refrigerant from the central machinery room to the sales area, are most commonly used, although more advanced designs that reduce

2014年5月5日 · Supermarkets, one of the biggest users of R404A, are exploring natural options, particularly CO2, hydrocarbons, or CO2 in tandem with lower GWP HFCs or HFOs in cascade systems. The world’s refrigerant producers also have options in development, testing and on the point of availability.