1) GEA Bock compressors can use the low global warming potential refrigerant R407F, which has 50% lower GWP than R404A. 2) R407F can provide higher efficiency than R404A, with potential COP increases in Bock HA and HG compressor systems of 5-15% for low temperature and 7-12% for medium temperature refrigeration. 3) While R407F presents some technical challenges at low temperatures, the unique air-cooling of the Bock HA compressor motor allows its use without additional fans or injection in low temperature applications.

1. GEA Bock compressors for
refrigerant R407F
Semi-hermetic reciprocating compressors for
Low GWP refrigerant R407F
GEA Refrigeration Technologies

2. Benefits of R407F
Significant higher efficiency compared with
R404A  increase in COP
R407F can be 50% lower
used by all Bock GWP* than
compressors R404A
Usage possibility as a Drop-In solution
regarding the
retooling of a R22 plant
* = Global Warming Potential
Refrigerant R407F GEA Refrigeration Technologies

3. Environmental friendly refrigerant
A 50%
lower
GWP** than
R404A
** = Global Warming Potential
Refrigerant R407F GEA Refrigeration Technologies

4. Technical challenges of R407F
• Experiments with R407F indicated a 15 % lower refrigerating
capacity
• High discharge temperature of R407F makes low temperature
application difficult
• This fact often requires the use of additional fans and liquid
injection
• R407F has a temperature glide of 4-6 K
Refrigerant R407F GEA Refrigeration Technologies

5. High efficiency with Bock HA compressors
Condensing temperature [°C]
Evaporating temperature [°C]
Low temperature refrigeration:
R407F in combination
with the air-cooled Bock HA series offers a energy
saving potential of around 5 to 15% compared to
R404A systems!
Refrigerant R407F GEA Refrigeration Technologies

6. HA Compressors – Refrigerating capacity
Condensing temperature [°C]
Evaporating temperature [°C]
Refrigerating capacity
Refrigerant R407F GEA Refrigeration Technologies

7. HA Compressors – Power consumption
Condensing temperature [°C]
Evaporating temperature [°C]
Power consumption
Refrigerant R407F GEA Refrigeration Technologies

8. The unique Bock HA system
Thanks to the air-cooling of the drive motor, Bock HA compressors
do not heat the suctioned refrigerant and guarantee a reduced
discharge end temperature, which makes the use of R407F in low
temperature applications without additional fans or liquid injection
possible.
Refrigerant R407F GEA Refrigeration Technologies

9. HA compressors – Discharge temperatures
HA discharge temperatures with R407F
Refrigerant R407F GEA Refrigeration Technologies

10. HA compressors – Limits of application
HA application limits with R407F
Refrigerant R407F GEA Refrigeration Technologies

11. High efficiency with Bock HG compressors
Condensing temperature [°C]
Evaporating temperature [°C]
Medium temperature refrigeration:
R407F in combination
with the suction gas-cooled Bock HG series
offers a energy saving potential of around 7 to
12% compared to R404A systems!
Refrigerant R407F GEA Refrigeration Technologies

12. HG compressors – Refrigerating capacity
Condensing temperature [°C]
Evaporating temperature [°C]
Refrigerating capacity
Refrigerant R407F GEA Refrigeration Technologies

13. HG compressors – Power consumption
Condensing temperature [°C]
Evaporating temperature [°C]
Power consumption
Refrigerant R407F GEA Refrigeration Technologies

14. HG compressors – Discharge temperatures
HG discharge temperatures with R407F
Refrigerant R407F GEA Refrigeration Technologies

15. HG compressors – Limits of application
HG application limits with R407F
Refrigerant R407F GEA Refrigeration Technologies

16. HA vs. HG with R407F
Condensing temperature [°C]
Evaporation temperature [°C]
Volumetric efficiency HA vs. HG with R407F
Refrigerant R407F GEA Refrigeration Technologies

17. HA vs. HG with R407F
Condensing temperature [°C]
Evaporation temperature [°C]
Overall efficiency HA vs. HG with R407F
Refrigerant R407F GEA Refrigeration Technologies

18. Low GWP R407F & GEA Bock Compressors
GEA Refrigeration Technologies has released
Bock HG and HA compressors for R407F applications.
Regarding compressor capacity data in operation with R407F, please contact
GEA Bock application engineering
Refrigerant R407F GEA Refrigeration Technologies

19. Low GWP R407F & GEA Bock Compressors
Honeywell Retrofit
Guidelines
to be considered
Refrigerant R407F GEA Refrigeration Technologies