Jonas Schönenberger, Frigo-Consulting

1. Frigo-Consulting
Jonas Schoenenberger
16.10.2019
SELGROS Lesznowola
All-In-One systems
on the rise

2. • CO2 neutral by 2023
– Reduce emissions
è stay away from fossil fuels
è switch to natural refrigerants
– Less CO2 compensation certificates required
– Cost savings result to reach target
16.10.2019 Atmosphere EU, Warsaw ©Frigo-Consulting 2
Target Transgourmet Group
GWP
ODP
XX

3. SELGROS Lesznowola
16.10.2019 Atmosphere EU, Warsaw ©Frigo-Consulting 3
• SELGROS Cash&Carry Market
• Sales area / Facility 8’150 m2 / 14’500 m2
• Exhaust air heat recovery
• Cabinets closed with glass doors
• LED lighting
• 2 x CO2-booster, each with ejectors
• 2 x CO2-heat pump/chiller, each with ejectors
• Medium temperature 500 kW @ -2°C / +34°C
• Low temperature 110 kW @ -26°C / +34°C
• Air conditioning 620 kW @ +8°C / 14°C / +34°C
• Heating demand 850 kW @ +27°C / +42°C / -20°C
• Tap water 100 kW @ +15°C / 65°C

4. 16.10.2019 Atmosphere EU, Warsaw ©Frigo-Consulting 4
System overview
CO2
booster
CO2
booster
CO2
heat pump
CO2
heat pump
LT MT LT MT
cold water
storage
building system boundary
gas cooler/
hp evaporator
gas cooler gas cooler
gas cooler/
hp evaporator
domestic hot
water storage
facility heating
storage

5. 16.10.2019 Atmosphere EU, Warsaw ©Frigo-Consulting 5
MT- & LT-Refrigeration
CO2
booster
CO2
booster
CO2
chiller
CO2
chiller
LT MT LT MT
cold water
storage
building system boundary
gas cooler/
hp evaporator
gas cooler gas cooler
gas cooler/
hp evaporator
domestic hot
water storage
facility heating
storage

6. 16.10.2019 Atmosphere EU, Warsaw ©Frigo-Consulting 6
Summer è air conditioning
CO2
booster
CO2
booster
CO2
chiller
CO2
chiller
LT MT LT MT
cold water
storage
building system boundary
gas cooler/
hp evaporator
gas cooler gas cooler
gas cooler/
hp evaporator
domestic hot
water storage
facility heating
storage

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Heat recovery
CO2
booster
CO2
booster
CO2
chiller
CO2
chiller
LT MT LT MT
cold water
storage
building system boundary
gas cooler/
hp evaporator
gas cooler gas cooler
gas cooler/
hp evaporator
domestic hot
water storage
facility heating
storage

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Winter è facility heating
CO2
booster
CO2
booster
CO2
heat pump
CO2
heat pump
LT MT LT MT
cold water
storage
building system boundary
gas cooler/
hp evaporator
gas cooler gas cooler
gas cooler/
hp evaporator
domestic hot
water storage
facility heating
storage

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Clima data & operation mode
-17.3°C
+33.1°C
AC
42%
HR
47%
HP
11%

10. Challenges
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• Consider different function modes
– Summer
– Winter
– Heat recovery
– Defrosting
• Matching up of components
– Compressors / ejectors
• High installation quality mandatory
• Regulation of different function modes
• Low return flow temperature of facility heating

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Roadmap All-In-One technology
Photovoltaic
Long term storage
All-In-One-Systems
without backup
Heat recovery
All-In-One-Systems
with backup

12. Summary
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• Overview SELGROS Lesznowola
• System successfull in operation since 2017
• All-In-One System to become CO2-neutral
– Less emissions: no fossil fuels, natural refrigerants
– Efficient operation due to ejectors and parallel
compression
– No back-up System needed
• Success depends on specific engineering in an early phase
• Interfaces to other trades play an important role
• The way is paved for the next steps

13. Thank you for your attention
j.schoenenberger@frigoconsulting.ch

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Facility heating return temperature

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Winter è defrosting
CO2
booster
CO2
booster
CO2
heat pump
CO2
heat pump
LT MT LT MT
cold water
storage
building system boundary
gas cooler/
hp evaporator
gas cooler gas cooler
gas cooler/
hp evaporator
domestic hot
water storage
facility heating
storage