In this presentation given during Chillventa 2018, Stefano Soggia introduces DC Cella Split, our DC inverter control solution for cold rooms that merges all the benefits of breaking-through solutions like UltraCella, Hecu and EVDice, and provides up to 25% energy savings compared to equivalent on/off technology.

1. 1
Hall 9
NürnbergMesse, Arbeitstitel, Datum
Chillventa Specialist Forums 2018
Chillventa Fachforen 2018
DC Technology in cold room,
food quality and energy saving
Stefano Soggia, CAREL

2. DC technology in cold rooms: food quality and energy-saving
• Application field
• Main regulations, trends and market needs
• Carel new solution
• OEMs opportunities
• Solution benefits
• References & conclusions
Agenda

3. • Commercial cold rooms
(i.e. restaurant or small shops)
• Preservation of food
• Both MT and LT application
• One to one system
(one condensing unit, one evaporator)
Field of application
DC technology in cold rooms: food quality and energy-saving

4. Market trends & regulations
• Energy consumption
normatives
• Environmental impact
(natural refrigerants,
F-Gas…)
• IoT trend
End user needs
• Mantain high food quality
• Lower total cost of
ownership (savings &
reliability)
• Peace of mind
Installer needs
• High usability
• Simple installation (even
for CO2)
• Fast system configuration
& commissioning
• Reliability
DC technology in cold rooms: food quality and energy-saving
Main regulations, trends and market needs

5. DC technology in cold rooms: food quality and energy-saving
Carel NEW solution: DC Cella SPLIT
Idea
Enable a new, “all in one”, cold room
solution for OEMs in the refrigeration
distribution channel:
• just like common domestic air
conditioning solutions.
• extremely usable
• reliable
• highly efficient
• based on Carel system approach
Remote
control
Condensing
unit Split unit

6. New system for DC Technology cold rooms:
• Custom solution, co-engineered with
OEMs, to support their market strategy
• refrigerant neutral (CO2, HFO, HFC)
• based on Carel Hecu, Ultracella,
EVD Ice long lasting experience
DC technology in cold rooms: food quality and energy-saving
Carel NEW solution: DC Cella SPLIT
Cold room controlCondensing unit with Evaporator with
Cabling and
accessories
Unique design &
services

7. DC technology in cold rooms: food quality and energy-saving
OEMs opportunities
Every OEM DC Cold Room bundle is unique:
• exclusive OEM technology and
OEM know-how for CDU and evaporator
• different bundle composition,
depending on OEM unique services,
values and accessories
• Custom Carel HW, SW and pre-setting
to enhance OEM bundle performances
• powered by Carel DC Technology

8. DC technology in cold rooms: food quality and energy-saving
Carel NEW solution: DC Cella SPLIT
EVAPORATOR
with embedded EVD Ice
All electronic expansion valve benefits with:
- Zero field welding
- Zero field wiring
- Up to half less pulldown time vs
thermostatic expansion valve
CONDENSING UNIT with
embedded HECU
- Maximum system performances with
variable capacity
- Optimal temperature control
- Real-time energy optimisation
COLD ROOM
CONTROLLER
DC Cella
- Fast & easy wizard commissioning
- High configurability for wide
applications range
- Built-in datalogging functions

9. DC technology in cold rooms: food quality and energy-saving
Solution benefits: higher products quality preservation
Time
Temperature[°C]
DC Technology (green) works with measured average temperature limited in a narrow range
(set ±1°C) thanks to smoothline logic → more than 80% of the time (defrost included).
On/off systems (red) in the same range share only less than 50% time.
Set= 2°C
2°C
3°C

10. Higher energy savings
• HFC: up to +25% average energy saving
vs traditional on/off solutions.
• CO2: up to +15% average (20% peak)
energy saving vs AC inverter semi-
hermetic technology.
• Smart defrost logics
DC technology in cold rooms: food quality and energy-saving
Solution benefits: high performances
Higher acoustic comfort
• less pipes vibrations
• less noise
thanks to DC Technology compressor and
modulating speed CDU fans.
* Depending on CDU acoustic insulation
up to

11. DC technology in cold rooms: food quality and energy-saving
Solution benefits: installation & commissioning time saving
* Starting point: 90m3 cold room with walls and door only
3~
Factory
fitted &
tested!
3ph
solution
ready2go!
Quicker commissioning
& pulldown.
No re-tune needed!

12. DC technology in cold rooms: food quality and energy-saving
Solution benefits: reliability & monitoring
Reliability
System-approach grant total control on all
system devices:
• Serial communication backup logic
• Preventive alarms logic
• Compressor envelope management
• Advanced oil return management
Monitoring
Complete local and remote monitoring
activities on the whole system:
• Less need for periodical check and field
visits
• Installer can provide premium monitoring
services thanks to advanced IoT
capabilities

13. Less complexity
• bundle pre-qualified
• factory-fitted & tested components
• Error-proof special cable connections
DC technology in cold rooms: food quality and energy-saving
Solution benefits: usability
Easy installation, even with CO2
• System pre-configured
• Intuitive, step-by-step wizard commissioning
• All system devices status quickly accessible
from main cold room control

14. • Commercial cold rooms
(i.e. restaurant or small shops)
• Preservation of food
• Both MT and LT application
• One to one system
(one condensing unit, one evaporator)
Field of application
DC technology in cold rooms: food quality and energy-saving

15. • Commercial cold rooms
(i.e. restaurant or small shops)
• Preservation of food
• Both MT and LT application
• One to one system
(one condensing unit, one evaporator)
Field of application
DC technology in cold rooms: food quality and energy-saving

16. 16
Hall 9
NürnbergMesse, Arbeitstitel, Datum
Chillventa Specialist Forums 2018
Chillventa Fachforen 2018