Creard R-407H
A low GWP and Low Cost service solution for R-404A/507 in MT and LT applications
The European F-Gas regulation EU517/2014 is upon us. Effective since 2015, the regulation is entering a new phase of accelerated phasedown of the HFC consumption within the EU28. Compared to the baseline year of 2015, a reduction step of 37% of available quota is set for January 2018. Even in 2017, the requirement that imported pre-charged equipment consumes quota will add pressure on available quota. Owners and operators of existing installations need to find urgently cost effective solutions to maintain their equipment and cooling service.
Who is at risk?
Industry studies have shown that the largest burden on the F-gas industry to reduce its CO2 footprint will be carried by the commercial refrigeration sector. Especially impacted are systems running on high GWP refrigerants such as R-404A / R-507. According to EPEE’s Gapometer study, 50% of existing R-404A systems should be replaced or converted to a lower GWP refrigerant by January 2018 to meet this requirement.
This raises a huge challenge for our industry. Indeed, the race to retrofit these high GWP gases in commercial systems puts even more short-term pressure on quota availability. This fact, combined with further step-downs in F-gas quota means that the right choice of refrigerant is critical for initial retrofit and future service.
Choosing a Low GWP and Low Cost retrofit refrigerant – a 3-component choice
The F-gas cap and phasedown schedule for CO2 equivalent quota will inevitably put increasing pricing pressure on each tonne of CO2 required by the EU market. It is therefore essential that plant owners and operators get to the lowest GWP levels for an A1 refrigerant in their commercial refrigeration installations. Any refrigerant with a GWP greater than 1500 will see rapidly increasing cost pressure and may even require a second retrofit to lower GWPs in order to meet the cap and phasedown schedule.
Creard R-407H is an A1 classified refrigerant with a GWP <1500
We at DAIKIN believe that the EU refrigeration industry will need HFO based solutions to comply with the F-gas regulation. Indeed, DAIKIN has a broad portfolio of HFO technologies. However, it is a fact that HFO molecules are more expensive to produce than traditional HFCs. We believe that the industry should only pay for HFOs or even more expensive solutions when absolutely necessary. For the replacement of most R-404A / R-507 MT and LT systems, Creard R407H provides equivalent performance to HFO-based technologies with a GWP also below 1500.
In most cases, Creard R-407H can be used without major changes to existing R-404A / R-507 systems. R-407H can be considered a „drop in“ solution for many systems 2. Studies have shown that R-407H has an improved COP vs other HFO/HFC based replacement refrigerants and better cooling capacity than R-404A.
We believe that multiple solutions will be necessary to meet the F-gas Regulation.
HFO based technologies will be a part of those solutions and DAIKIN’s portfolio reflects these technologies.
However, for many A1 refrigeration applications where replacement of R-404A / R-507 is the greatest challenge for users and contractors, Creard R-407H can meet their F-gas needs by offering:
| Lower GWP | <1500 |
| Performance | equivalent or higher than R-404A/R-507 |
| Lower cost | no need for more expensive HFO based blends |
| Ease of Retrofit | a drop in solution for many systems |
2 However, R-407H cannot be considered a „drop-in“ for every system. For example, due to R-407H’s higher discharge temperature compared to R-404A / R-507, measures such as liquid injection would need to be considered for discharge temperatures exceeding 80°C.
Creard R-407H in quick conversion from R-404A in German supermarket
Creard R-407H as replacement for R-22 in US-based cold storage
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Creard R-407H as replacement for R-404A under difficult cycle parameters
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Creard R-407H as replacement for R-404A in cold storage (3°C)
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Creard R-407H as replacement for R-507 in cold storage (-24°C)
- (PDF, English)
Physical data 3
| R-404A | R-507 | Creard R-407H | ||
|---|---|---|---|---|
| Chemical Formula | CHF2CF3 CH3CF3 CH2FCF3 | CHF2CF3/ CH3CF3 | CH2F2 CHF2CF3/ CH2FCF3 | |
| Molar Mass | kg/kmol | 97.6 | 98.86 | 113.07 |
| Boiling Point at 1.013 bar | °C | -46.2 | -46.74 | -44.7 |
| Critical Temperature | °C | 72.0 | 70.6 | 86.5 |
| Critical Pressure | bar | 37.29 | 37.1 | 48.5 |
| liq. cp 4 | kJ/(kgK) | 1.542 | 1.539 | 1.585 |
| vap. cp 4 | kJ/(kgK) | 1.221 | 1.225 | 1.176 |
| Ratio cp/cv, vap. 4 | 1.37 | 1.38 | 1.36 | |
| Spec. density, liq. 4 | kg/m³ | 1044 | 1048 | 1111 |
| Spec. density, vap. 4 | kg/m³ | 65.27 | 68.89 | 41.86 |
| Enthalpy of vaporization 4 | kJ/kg | 140.26 | 136.45 | 199.02 |
| Explosive limit in air 5 | % v/v | N/A | N/A | N/A |
4 sat. @ 25°C
5 T = 25°C, p= 1.013bar
Important Links
Further information:
Compressor approvals
- Emerson Medium Temperature Scroll and Stream Compressors: Approval of use with Creard R-407H (Updated 2018/09/20) (PDF)
- Frascold Reciprocating compressors: Approval of use with Creard R-407H (PDF)
The compressor manufacturers listed here can be contacted for approval of Creard R-407H for use with their compressors:.