This document discusses using CO2 as a refrigerant for refrigeration systems. It covers upcoming regulations on HFC refrigerants in the EU, Emerson's product offerings for CO2 systems including compressors and controls, and a tool for selecting compressors and optimizing CO2 system performance. Emerson provides a range of compressors for medium-temperature and low-temperature applications in CO2 systems, along with integrated electronics for protection and diagnostics. Their Select R744 software allows users to select compressors, optimize system parameters, and compare system COP.

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Chillventa Specialist Forums 2016
Chillventa Fachforen 2016
Hall 7A

2. Standard Template Options and Samples_Mar 2016_EMR:jmk 2
Products and Solutions in Systems
Using CO2 as a Refrigerant
Dr. Gábor Böszörményi
Sales Manager CO2
Emerson Climate Technologies
52076, Aachen
Germany

3. Standard Template Options and Samples_Mar 2016_EMR:jmk 3
Contents
• Legislative Introduction – The Impact Of F-Gas Regulation and
Local Regulations
• Emerson’s View to the Market
• Components For Systems Using CO2 as a Refrigerant
• From The Component Design to System Level Solutions
• Select R744 – The Support Tool For Compressor Selection

4. Standard Template Options and Samples_Mar 2016_EMR:jmk 4
F-Gas Regulation – Summary and Timeline
2015 2016-17 2018-20 2021-23 2024-26 2027-29 2030
21 %100 % 63 % 45 % 31 % 24 %93 %
Domestic
fridge (GWP
150)
2025:
split AC
(GWP 750)
2020:
• Moveable AC (GWP
150)
• Hermetically Sealed
Comm. Refrig (GWP
2500)
• Stat Refrigr (GWP
2500)
2022:
• Hermetically Sealed
Comm Refrig (GWP
150)
• Multipack refr
(GWP 150) – except
primary cascades
(GWP 1500)
01/01/2015:
Applicabilit
y + repeal
842/2006
31/12/2022:
Comprehensive
report on effect
of Regulation
01/07/2020:
Report Annex
III: split AC
31/12/2020:
HFC report
01/01/2017:
• Report national
codes/standards
re. alternatives &
training
01/07/2017:
• Report Annex III:
multipack
• Report PD method
Phase-downBansOtherReview/reports
2017:
Traceability
2020:
Service ban >2500
2030:
No recycled/reclaimed
for servicing >2500
2015:
Reporting

5. Standard Template Options and Samples_Mar 2016_EMR:jmk 5
HFC Taxes and Fiscal Incentives in The EU
The F-Gas Regulation and local taxation and incentive mechanisms on the top
redirect the refrigeration business to naturals (R744, R290, R1270 etc.) or low-GWP
synthetic refrigerants.
Denmark
~20 € / tCO2 eq.
HFOs exempted
Switzerland
Strong F-Gas
charge limitation
Slovenia
Taxation since 2013
Target 28.8 € /t CO2 eq.
Spain
Taxation since 2014
13.3 € /t CO2 eq. (2015 fixed)

6. Standard Template Options and Samples_Mar 2016_EMR:jmk 6
Emerson’s View To The Market
Source: Shecco
A variety of system architectures are available to the market. A compromise
between initial and running costs and other aspects shall make one ore another
solution the choice in the specific environment.
Secondary CascadeCO2 Booster
Small Pack /
Condensing Unit
Self-Contained
Refrigerant
Charge
System
Life Cycle
ClimateApplication
Environment
Service
Infrastructure
Legislation
& Policy
System
Integration

7. Standard Template Options and Samples_Mar 2016_EMR:jmk 7
Components For Systems Using CO2 as a
Refrigerant / MT Compressors
Description:
• Displacements From 4 to 33 m³/h
• Cooling Capacity From 9 kW to 70 kW
• 4-Cylinder Compressors
• Coresense Diagnostics On All Models
Coresense Guarantees Extended Compressor Life & Sustainable System
Protects The Compressor & Detect Problems Before They Become Fatal
Provide Troubleshooting Assistance To Service Technicians
Main Characteritics
• Pressures: Operating 120 bar Design 90/135 bar
• Low Sound Level, Vibration & Pulsation
• Inverter Release 25-70 Hz (400/3/50 Hz)
• Advanced Protection, Preventive Maintenance,
Communication
• Troubleshooting Capabilities / Fault History
• Individual Compressor Power Monitoring
0
10
20
30
40
50
60
70
80
4MTL-05_ 4MTL-07_ 4MTL-09_ 4MTL-12_ 4MTL-15_ 4MTL-30_ 4MTL-35_ 4MTL-40_ 4MTL-50_
CoolingCapacityat-10°C/90bar(kW)

8. Standard Template Options and Samples_Mar 2016_EMR:jmk 8
Components For Systems Using CO2 as a
Refrigerant / MT Compressors
0
10
20
30
40
50
60
70
80
4MTL-05_ 4MTL-07_ 4MTL-09_ 4MTL-12_ 4MTL-15_ 4MTL-30_ 4MTL-35_ 4MTL-40_ 4MTL-50_
CoolingCapacityat-10°C/90bar(kW)
• Production: Dec 2012• Production: Jan 2016
Source: Shecco
Emerson’s MT compressor line-up covers the needs of the majority of applications
from small to large booster systems and high-temperature heat pumps.
• Samples: Available
• Production: March 2017

9. Standard Template Options and Samples_Mar 2016_EMR:jmk 9
Components For Systems Using CO2 as a
Refrigerant / LT Compressors
Low Temp
Medium Temp
Digital(Modulation)
StandardScroll
Jan 2015 Sep 2015
Low Temp
Medium Temp
Increasing the standstill pressure of the LT compressors increases the initial
system cost, as besides the compressor the other components and connecting
pipes have to be designed to the increased pressure level.
Scroll Compressors
Standard Standstill Pressure
Semi-Hermetic Compressors
High Standstill Pressure
30/52 (45) bar
60/90 bar

10. Standard Template Options and Samples_Mar 2016_EMR:jmk 10
0
5
10
15
20
25
ZO21 ZO34 ZO45 ZO58 ZO88 ZO104 ZOD34 ZOD104
CoolingCapacityat-35°C/-5°C(kW)
Components For Systems Using CO2 as a
Refrigerant / LT Compressors
Scroll compressors bring certain advantages such as low footprint and weight,
digital modulation reduces complexity and brings secondary initial cost savings.
Fixed Capacity
Scroll
Digital
Scroll

11. Standard Template Options and Samples_Mar 2016_EMR:jmk 11
Components For Systems Using CO2 as a
Refrigerant / LT Compressors
Scroll compressors are typically as efficient as competitive semi-hermetic
compressors in the pressure ratio required by LT applications.
2
3
4
5
6
7
1.5 2 2.5 3 3.5 4
CompressorCOP(-)
Pressure Ratio (-)
2-cyl. SH
ECT Scroll

12. Standard Template Options and Samples_Mar 2016_EMR:jmk 12
Components For Systems Using CO2 as a
Refrigerant / LT Compressors
Description:
 CO2 Compressors For LT Cascade & Booster Systems
 From 8 kW to 32 kW Cooling Capacity (5-18 m³/h)
 Systems Requiring High Standstill Pressure (Up To 90 bar)
 Integrated Electronics For Protection/Diagnostics
Using Transcritical Compressors In MT Side & LT Sides Ensures That In Case Of Power
Outage, The System Features Full Resilience & No Operation Disruption
Main Benefits/Characteritics
 Pressures: Operating 60 bar Design 90/135 bar
 Testing Inverter 25-70 Hz (400/3/50 Hz)
 CoreSense Diagnostics On All Models
 Individual Compressor Power Monitoring
0
5
10
15
20
25
30
35
4MSL-03_ 4MSL-04_ 4MSL-06_ 4MSL-08_ 4MSL-12_ 4MSL-15_
CoolingCapacityat-35°C/-5°C
(kW)

13. Standard Template Options and Samples_Mar 2016_EMR:jmk 13
Components For Systems Using CO2 as a
Refrigerant / LT Compressors
0
5
10
15
20
25
30
35
4MSL-03_ 4MSL-04_ 4MSL-06_ 4MSL-08_ 4MSL-12_ 4MSL-15_
CoolingCapacityat-35°C/-5°C(kW)
• Production: May 2014• Production: April 16 *

14. Standard Template Options and Samples_Mar 2016_EMR:jmk 14
From The Component Design to System Level Solutions
Emerson offers a series of products developed for CO2 that brings an
optimum synergy, initial cost savings and reliability.

15. Standard Template Options and Samples_Mar 2016_EMR:jmk 15
From The Component Design to System Level Solutions
For instance, using OM5 instead of OM4 brings substantial initial cost
savings potential by avoiding an oil reservoir and oil separator.

16. Standard Template Options and Samples_Mar 2016_EMR:jmk 16
From The Component Design to System Level Solutions
In order to ensure optimum synergy between system components, Dixell’s
iProRack controls e.g. compressors, waste-heat recovery and expansion valves.

17. Standard Template Options and Samples_Mar 2016_EMR:jmk 17
Select R744 - The Support Tool For Compressor Selection
Emerson’s Select R744
allows the user to
 select compressors for
the required cooling
capacities in
booster/cascade
systems
 optimize the system
parameters to achieve
optimum system COP
 compare the LT/MT
subsystems’ COP to
other refrigeration
technologies

18. Standard Template Options and Samples_Mar 2016_EMR:jmk 18
Real-Time Monitoring Thanks to CoreSense Diagnostics
Connection to the
CO2 heat pump system
running in Austria

19. 1919
Chillventa Specialist Forums 2016
Chillventa Fachforen 2016
Hall 7A