Micael Antonsson, Carrier, Multi-climate CO2 modulating ejector application for sports venues and warehouse

2. Multi-climate CO2 Ejector Application in
Sports Venues and Warehouses
© 2019 Carrier Corporation
Micael Antonsson
Director Industry Segment
Mechanical Systems (MS)

3. Large capacity industrial racks
1000
500
100
PowerCO2OL
MiniCO2OL Compact
CO2OLtec Evo
Capacity kW
50
10
Quiet CO2OL MC
Quite CO2OL

4. PowerCO2OL range
MT -8°C/32°C (89 bar)
LT -32°C (0°C)
250kW 500kW 1000kW
Single low evaporating temperature
Single evaporating temperature
Dual evaporating temperature (Booster)

5. PowerCO2OL range
• PowerCO2OL enablers
– Large 6 cylinder compressors -
trend to 100 m3/h swept volume
– In-house developed PLC based
controller
– Innovative receiver design
– Compact modular frame design

6. PowerCO2OL range
• High efficiency systems enabled by:
– Use of Carrier modulating ejectors
– Semi flooded operation
– Improved gas cooler design
COP improvement *
Average ambient
Shanghai (16,1°C)
CO2 Equator
(+15°C)
*
Based on Dorin polynomial values
-10°C To baseline
-8°C Semi flooded To
Ejector lift according to CARRIER PROPRIETARY & CONFIDENTIAL values

7. P
Increased Pin
Increased HR capacity
PowerCO2OL range
• High efficiency systems enabled by:
– HR integration
– «Smart» HR control
– Adaptation of surrounding
systems
@ To -8°C /60 bar, 1 kg/s = Pin 50,6 kW / HR 60 kW
@ To -8°C /85 bar, 1 kg/s = Pin 73,6 kW / HR 169 kW
HR temp 30°C/60°C
Heating COP 4,73

8. • 35 000 m2 total snow area
– 32 000 m2 ski slope, 500m pist
– 10 000 m2 cross country, 2 km track
– 90 m elevation
– One 4 seat chair lift + one tow lift
– 4250 m3 concrete
– 2100 ton steel structure
– 100 000 m3 removed granit
• 3450 kW cooling capacity (DX)
• Snow production will start in
September 2019
SNØ (SNOW) Ski arena

9. SNØ Ski arena units 1&2
• 2 parallel systems 2 x 1200kW (To -8°C)
• Refrigerant R744 (CO2)
• Direct expansion
• 28 air heat exchangers
• Hot gas defrost
• V-shaped gas coolers
• Heat reclaim domestic water (60-70°C)
• Heat reclaim heating (30-50°C)

10. SNØ Ski arena unit 3
• Dual function heat pump
• Refrigerant R744 (CO2)
• Ejector enhanced efficiency
• 400 kW brine chiller (-10°C To)
• 1050 kW brine chiller (7°C To)
• Air cooled gas coolers
• Heat reclaim domestic water (60-70°C)
• Heat reclaim heating (30-50°C)

11. DC Järvepää Finland
• 62 000 m2 total area
– Total volume above 1 000 000 m3
– Temperature controlled area
29 000 m2
– 22m indoor height
– Cold area (+2°C) 24 000 m2
• 2 400 kW (To -10°C
– Frozen area (-26°C) 5 000 m2
• 740 kW (To -34°C)
– Blast freezer (-42°C) 200 m2
• 280 kW (To -48°C)

12. DC Järvepää Finland
• 1000m3 Sprinkler water tank used as
an energy buffer for heating in winter
and sub-cooling in summer time
• Heating network is designed to work
together with properties of CO2
• In this building and in this location
CO2 system has better EER below 10°C
compared to NH3 system, sub cooling
and heat recovery system increased
efficiency to be higher on an annual
basis
• Location caused restrictions for the
use of ammonia

13. DC Järvepää Finland
• Estimation of CO2 emissions shows
that the property has a negative
CO2 emission impact
• Property uses emission free
electricity produced by the wind
and water
• Energy cost is reduced by up to
20% compared to similar logistic
centers
• With demand load shaving at peak
usage the calculated total
reduction is near 70%
Monthly emissions (CO2 tkg)

14. DC Järvepää Finland

15. © 2019 Carrier Corporation