Presentazione dell'Ing. Marek Zgliczynski (Embraco) al XVI Convegno Europeo il 12 giugno 2015 - 2a sessione

1. Latest Technologies in Refrigeration and Air Conditioning - XVI European Conference Milano, 12th - 13th June 2015
F-Gases EU Regulation:
R404A Replacement Refrigerants
Compressor Manufacturer Experience
Marek Zgliczynski / Jozef Sedliak

2. Latest Technologies in Refrigeration and Air Conditioning - XVI European Conference Milano, 12th - 13th June 2015
AGENDA
• Introduction – F gas Regulation EU 517/2014
• High Glide Refrigerant Considerations
• R404A Alternatives
• Compressor Approval Process
• Test Results
• Conclusions

3. Latest Technologies in Refrigeration and Air Conditioning - XVI European Conference Milano, 12th - 13th June 2015
F gas Regulation EU 517/2014
•From January 1st, 2020 - Refrigerators and freezers for storage, display or
distribution of products in retail and food service (commercial use)
hermetically sealed systems that contains HFC with GWP of 2500 or more, will
be banned
(e.g. R404A, R507A)
•From January 1st, 2022 - Refrigerators and freezers for storage, display or
distribution of products in retail and food service (commercial use)
hermetically sealed systems that contains HFC with GWP of 150 or more, will
be banned
(e.g. R134a, R407F, R407C, R410A)
•From January 1st, 2020 - Stationary refrigeration equipment, that contains,
or that relies upon for its functioning HFCs with GWP of 2500 or more except
equipment intended for application design to cool products to temperatures
below -50°C

4. Latest Technologies in Refrigeration and Air Conditioning - XVI European Conference Milano, 12th - 13th June 2015
F gas Regulation EU 517/2014

5. Latest Technologies in Refrigeration and Air Conditioning - XVI European Conference Milano, 12th - 13th June 2015
R404A Alternatives
Ashrae name Trade name Producer Type
Safety
Class
GWP 100y
Evap.glide
@1 bar(abs)
R404A HFC A1 3920 0,7K
R407F Performax LT Honeywell HFC A1 1820 6K
R407A Arkema/ Dupont HFC A1 2100 6K
R448A N40 Honeywell HFC A1 1386 6K
R449A XP40 DuPont HFC A1 1397 5K
R452A XP44 DuPont HFC A1 2140 3K
Refrigerant
Trade name Producer Safety Class
GWP
100y
HDR110 Honeywell A2L < 150
DR3 DuPont A2L < 150
ARM25 Arkema A2 < 150
Refrigerant
AREP 2nd Phase

6. Latest Technologies in Refrigeration and Air Conditioning - XVI European Conference Milano, 12th - 13th June 2015
High Glide Considerations:
Dew Point or Middle Point ?
𝑇1 𝑚𝑖𝑑 𝑝𝑜𝑖𝑛𝑡 = 𝑚𝑒𝑎𝑛 (𝑇1 𝑒𝑣𝑎𝑝 𝑖𝑛𝑙𝑒𝑡 ; 𝑇1 𝑑𝑒𝑤 )
𝑇1 𝑒𝑣𝑎𝑝 𝑖𝑛𝑙𝑒𝑡 – 𝑇1 𝑏𝑢𝑏𝑏𝑙𝑒
𝑇1 𝑑𝑒𝑤 − 𝑇1 𝑏𝑢𝑏𝑏𝑙𝑒
=
ℎ 𝑒 − ℎ 𝑏
ℎ 𝑑 − ℎ 𝑏
Performance / Reliability: Middle Point
Motor validation / IEC: Dew Point

7. Latest Technologies in Refrigeration and Air Conditioning - XVI European Conference Milano, 12th - 13th June 2015
Compressor Approval Process
MOTOR DESIGN VALIDATION

8. Latest Technologies in Refrigeration and Air Conditioning - XVI European Conference Milano, 12th - 13th June 2015
Test Results
* Red and yellow box color indicates that temperatures are out of internal
approval criteria temperature limits
Starting
Low Load High Load Low Load High Load AA1 AA2
R407F 24,3 14,3 20,3 19,7 OK 18,6 24,3
R407A 22,8 7,1 15,5 13,6 OK 10 8,5
R448A 17,3 9 7,2 9,6 OK 15,2 13,8
R449A 10,4 3,8 6 5,8 OK 12,5 8,9
R452A 1,4 -6,9 -4,7 -4,5 OK 0,4 0,3
ΔT vs R404A
in deg C
Embraco internal standards IEC standard
Winding temp Discharge temp

9. Latest Technologies in Refrigeration and Air Conditioning - XVI European Conference Milano, 12th - 13th June 2015
Conclusions:
• Based on preliminary testing, Embraco cannot consider R407F,
R407A, R448A nor R449A as a drop-in substitution for systems using
Embraco R404A compressors.
• Usage of mentioned refrigerants can require additional actions as for
instance system condensing temperature reduction (larger condenser,
improved ventilation) and/or return gas temperature reduction in order
to achieve similar thermal profile as with refrigerant R404A.
• In particular usage in systems operating under high compression
ratio conditions should be avoided
• Only R452A can be in this stage considered as a drop-in refrigerant.

10. Latest Technologies in Refrigeration and Air Conditioning - XVI European Conference Milano, 12th - 13th June 2015
Thank you very much!