The low GWP refrigerant R407F

摘要

GEA Refrigeration Technologies has now approved its semi-hermetic GEA Bock HG and HA compressors for operation with the refrigerant R407F. The refrigerant is especially suitable for commercial refrigeration because it has a higher efficiency than R404A and a 50 percent lower GWP (Global Warming Potential) and can be used as a drop-in solution when it comes to retrofitting R22 systems. Laboratory tests showed that the use of R407F results in a significant increase of the energy efficiency of a system, compared to R404A. Even though tests with R407F in deep freezing showed a lower refrigerating capacity than R404A of around 15 percent, the power input of the systems also decreased at the same time by about 22 percent. Only based on the compressor, this results in an increase at the relevant operating points of the COP (Coefficient of Performance) of 5-10 percent in deep freezing as well as 7-12 percent in normal cooling.