The R407C has a high energy efficiency ratio, as well as a low GWP and compression pressure. It has previously been used to replace R22 as an ozone-friendly refrigerant.
If the R22 needs to be replaced, POE (polyolester) oil must always be used. In all retrofitting situations, the proper refrigerant must be chosen after thorough assessment of the overall scenario and conditions.
Positive displacement equipment (PDE) is used in a variety of applications.
- Household and commercial air conditioners, new or old
- Heat pumps for homes and businesses, new or old
- Currently available medium-temperature applications
- Capacity and energy efficiency are comparable to R22 so can be used in replacement for R22
Why R407C Refrigerant Gas Is a Better Replacement for R22
In comparison to R22, R407C has no ODP and a much higher GWP. The release of refrigerants into the environment causes a slew of environmental problems. A comprehensive evaluation of the experimental research related to R407C performance is offered.
The goal is to compile all of the available information on the R407C into a single publication. After extensive study, it was discovered that R22 performs somewhat better than R407C in several aspects, including cop, energy consumption, cooling capacity, and exergetic analysis, but that R410A is the best refrigerant for new design.
R407C Vs. R410A
The change in boiling point of its component due to the difference in vapor and liquid mass fraction at equilibrium is the major distinction between pure, zeotropic, and near-azeotropic refrigerants.
R407C refrigerant gas also consumes less power than the R22 testing by a factor of three to ten percent (4 percent). R407A, on the other hand, has a higher power consumption than R22, with a difference of between 4% and 8%. (10 percent).
The fact that R-407C functions at such a low pressure is one of the advantages of utilizing it in high-ambient settings. The glide of R-407C is 10°F, which is a disadvantage to be aware of. Glide is the temperature difference between the boiling temperatures of the three chemicals in R-407C, which is a zeotropic mixture. While ten degrees may not seem like much, it might have significant consequences for other parts of a system.
In various markets, including the United States, Europe, and portions of Asia, R-410A is particularly popular for home and commercial air conditioning. Concerns about R-410A’s high operating pressure at warmer ambient temperatures may explain why it’s not as popular in places like the Middle East. In the UAE and Middle East region, R407C is prevailing
Heat Transmission Properties
The heat transmission properties of R410A are excellent. In comparison to R407C, R410A has a higher evaporation heat transfer coefficient and a higher condensation heat transfer coefficient. The heat transmission coefficient of R410A in a smooth horizontal tube is about 50% higher than that of R407C, according to the evaporation test results.
In the smooth tube, the condensation heat transfer coefficient of R410A is 20% higher than that of R407C, according to the condensation test. R410A’s condensation heat transfer is 35 percent to 50 percent higher than R407C’s outside the smooth tube. The condensation heat transfer coefficient of R410A is 35 percent to 55 percent higher than that of R407C outside the tube with micro-fins.
The non-azeotropic attribute of R407C is connected to its low heat transfer coefficient: one is that during equal pressure evaporation or condensation, there is a substantial phase transition temperature difference.
Second, the vapor and liquid phases have a large concentration difference. The near-azeotropic feature of R410A is one of the main reasons for its high heat transfer coefficient. Furthermore, the flow pressure drop of R410A is lower than R22 and R407C.