R E F R I G E R A T I O N A N D A I R C O N D I T I O N I N G R E F R I G E R A T I O N A N D A I R C O N D I T I O N I N G F O O D R E T A I L F O O D R E T A I L Designing CO 2 -Systems - Danfoss System Solution for CO 2 based Refrigeration Jens Christian Callesen Business Development Manager CO 2 Applications Danfoss Food Retail
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Designing CO -Systems - Teknologisk Institut Callesen Danfoss.pdfEKC 414A, EKC 414A1 AK2 CC 303 Evaporator controller EKC 315A Pack controller EKC 331T, EKC 531D1, AK2 PC 311---46
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R E F R I G E R A T I O N A N D A I R C O N D I T I O N I N GR E F R I G E R A T I O N A N D A I R C O N D I T I O N I N G F O O D R E T A I LF O O D R E T A I L
Designing CO2-Systems- Danfoss System Solution for CO2 based Refrigeration
Jens Christian CallesenBusiness Development Manager CO2 Applications Danfoss Food Retail
September 07 / 2R E F R I G E R A T I O N A N D A I R C O N D I T I O N I N G
Refrigeration and Air Conditioning
Household Compressors
Industrial Refrigeration
Food / RetailCommercial
LargeLargeMediumSmallSystem size
CFC - HCFC - HFC
PRS Process
Refrigeration Systems
Hydro CarbonsAmmonia
Segment
Refrigerant
Hydro Carbons
CO2 sub critical
CO2 Transcritical
September 07 / 3R E F R I G E R A T I O N A N D A I R C O N D I T I O N I N G
Food RetailSub critical CO2 applications
Valves, Controls, Driers and Safety equipment
CO2 Applikationen
Heat Pumps & Bottle CoolersTranscritical CO2 applications
Compressors, controls and complete cooling cassettes
IndustrialSub critical CO2 applications
Valves, Controls, Driers and Safety equipment
Food RetailTranscritical CO2 applications
Controls
September 07 / 4R E F R I G E R A T I O N A N D A I R C O N D I T I O N I N G
CO2 receiver
Low stage –Compressor(s)
High Stage –Compressor(s)
R290, R1270,…
R134a, R404A,…
R717 (NH3)
CO2
High Stage –Condenser
Low Stage – Expansion valve
Low stage –Evaporator
High Stage – Expansion valve
Low Stage –Liquid pump
CO2 systems (Food & Retail and Industrial)
CO2 Transcritical
Low stage High stage
September 07 / 5R E F R I G E R A T I O N A N D A I R C O N D I T I O N I N G
High pressure components - CO2
Danfoss Sub Critical CO2 - components"Commercial" product line PS
+ The product can be used in standard version. All products are CE approved
September 07 / 6R E F R I G E R A T I O N A N D A I R C O N D I T I O N I N G
High pressure components - CO2
"Industrial" product line DN
Main Valves, Solenoid Valves ICS 1 ICS 3 all 20-65Motor Valves ICM all 20-65Multifunction valve ICF all 20-40Pilots for ICS Valves CVP (XP)
EVM Stop Valves - SVA ST,LT,HS SVA 10-65 10-65Regulating Valves - REG REG all 15 - 65Stop Check Valves SCA SCA 15-65 15-65Filters FIA FIA 15-65 15-65Check Valves CHV all 15- 40Solenoid Valves EVRS all 10-25
EVRA all 10-40Electrically operated expansion valve AKVA all 10-40
SFA 15 - DSV 1, 2 20-32POV 40, 50, 80 40-80
Filter drier DCRH High pressure version #Liquid level transmitter AKS 41 - -
Gas detectors GD
++++
++++
Safety Valves and Change Over Valves SFV - DSV
+
+
###
#####
PS 40bar
[580 psi]
PS 52 bar [754 psi]
++
++++
+ The product can be used in standard version. All products are CE approved
The product must be manufactured in a special version (higher test pressure, marking and documentation). All products are CE approved
Code no. for these products are description in this application gauide
46 bar
¤
September 07 / 7R E F R I G E R A T I O N A N D A I R C O N D I T I O N I N G
EU “LIFE” Project
• Objective:Develop a refrigeration system only using CO2 as refrigerant.
• Project: EU-financed Project (EU-Life Environment programme) with 5 Participants.
– Knudsen Køling , Alu Heat Exchanger, Bock , Danfoss, REMA1000, Danish Technological Institute
• Duration: October 2005 to October 2007
R E F R I G E R A T I O N A N D A I R C O N D I T I O N I N GR E F R I G E R A T I O N A N D A I R C O N D I T I O N I N G F O O D R E T A I LF O O D R E T A I L
Trans Critical Cycle with double expansion
Gas Cooling
2nd ExpansionLiquid
1st Expansion
Compression
2nd ExpansionVapour
Evaporation
R E F R I G E R A T I O N A N D A I R C O N D I T I O N I N GR E F R I G E R A T I O N A N D A I R C O N D I T I O N I N G F O O D R E T A I LF O O D R E T A I L
System layout (preliminary)
GC
EV,MT
EV,LT
12
3
4
5 15
6
7
10
11
8
13
14
17
16
12
9
pGC
pHS
pRC pLS
CP,HS
CP,LS
REC
IHX#1
IHX#2
ICMT ICS+CVP(XP)
AKV
AKV
Multiple evaporatorsfor low and mediumtemperature.
Scalable system:Refrigeration capacities from20 kW to 400 kW
R E F R I G E R A T I O N A N D A I R C O N D I T I O N I N GR E F R I G E R A T I O N A N D A I R C O N D I T I O N I N G F O O D R E T A I LF O O D R E T A I L
Trans-Critical CO2 Booster Plant
Closedintermediatestage cooler
Gas Cooler
ICS,
CVP(XP)
ICMT
(Prototype)
AKD
AKD
AKD
AKD
TX
TXTX
Ambient Temperature
AK2-PC311
Pack Controller
LON Net
EKC 414
EKC 414
AKA 245
Gateway
R E F R I G E R A T I O N A N D A I R C O N D I T I O N I N GR E F R I G E R A T I O N A N D A I R C O N D I T I O N I N G F O O D R E T A I LF O O D R E T A I L