Feb. 3rd 2015 Panasonic Corporation
Refrigeration and Air-Conditioning Devices Business Division Hidekazu Tachibana
Introduction of Panasonic New CO2 refrigeration system (Technical Part)
Number of stores installing Panasonic CO2 refrigera6on system in Japan and future prospect
Solu6ons
Energy saving confirma6on results
Issues of CO2 units and our Future Ac6on
AGENDA #1
584
1,000
1,200
1,450
1,700
0
250
500
750
1,000
1,250
1,500
1,750
FY2010 FY2011 FY2012 FY2013 FY2014 estimation
FY2015 target
FY2016 target
FY2017 target
FY2018 target
Number of stores installing Panasonic CO2 refrigeration system in Japan and future prospect
GWP 1,800
「GWP 1,500」 Target year 2025 early clear! ※1
GWP 2,000
GWP 2,200
GWP 2,400
Stores
Supermarket
Convenience store
#2
※1 Numerical value of a GWP (1,500) and accomplishment year (2025) target established in a law by the Japanese Government
Solutions
• Development of Compressor
• Development of Split system
• Development of Pressure adjust control
Solu6ons
#3
New technology
Intercooler
Casing Motor
1st-stage
2nd-stage
Discharge Suction
High Pressure
Intermediate Pressure
Solutions -Development of Compressor-
Low Pressure
Air Flow
Structure of 2-stages compression CO2 rotary compressor
#4
Solutions -Development of Compressor- #5 Issues and solutions of CO2 compressor
Refrigerant leakage reduction
Compression efficiency improvement
Casing design pressure is Intermediate pressure
Weight saving of the Casing Cost reduction
Distribution of compression torque
Load reduction to the sliding parts
Reliability improvement Vibration and Noise reduction
Discharge gas is cooled by the intercooler
Temperature of the sliding parts and the oil is reduced
Pressure difference reduction at 2-stages
Reliability and Efficiency improvement
Weight and Cost
Efficiency
Reliability Vibration and Noise
Reliability Efficiency
Solutions -Development of Split system
Air Flow
Air Flow
Gas Cooler
Intercooler
Evaporator Expansion Device
1st stage Compression
2nd stage Compression
Main Circuit
#6 Refrigeration circuit of 2-stage compression
Solutions -Development of Split system
Air Flow Expansion Device
Air Flow
Gas CooIer
Intercooler
Evaporator Expansion Device
1st stage Compression
2nd stage Compression
Split Heat Exchanger
Main Circuit Split branch Circuit
#7 Refrigeration circuit of Split System
Solutions -Development of Split system
1MPa(-40deg)
8.4MPa 34deg
18deg
#8 Ph diagram of 2-stage compression
Solutions -Development of Split system
Ph diagram of Split System
34deg
18deg
3.4MPa(-1deg)
Heat Exchange
2deg
156%
#9
Solutions
• Development of Compressor
• Development of Split system
• Development of Pressure adjust control
Solu6ons
#10
New technology
Outdoor Unit
Split Heat Exchanger
Show case
S
Refrigerant Amount Adjustment Tank
Low Pressure
High Pressure
Pressure 5MPa~9MPa
S
Solutions -Development of Pressure adjust control #11
Compressor Gas cooler
Pressure Fluctuates
with the season
Pre
ssur
e
Enthalpy
Spring Summer Autumn Winter
Annual operating pressure behavior of Present model
Intercooler
Reduced Pressure by Intercooler
Gas cooler Compressor
Split Heat Exchanger
Low Pressure
High Pressure
Pressure 5.5MPa~6MPa
Show case
Pressure Is constant
in all season
Pre
ssur
e
Enthalpy
Spring Summer Autumn Winter
#12 Solutions -Development of Pressure adjust control Annual operating pressure behavior of Pressure adjust control type
Outdoor Unit
・Pressure to showcase fluctuate 5MPa~9MPa with the season.
・Airtight examination pressure of the construction plumbing 12MPa.
・Pressure to showcase is controlled constant about 6MPa in all season.
・The necessary refrigerant quantity in a refrigerating cycle is stable in all season.
・Airtight examination pressure of the construction plumbing 8MPa.
5MPa ~9MPa
Winter Autumn Summer Spring
#13
Winter Autumn Summer Spring
Solutions -Development of Pressure adjust control Comparison of the annual operating pressure behavior
Present model
Pressure adjust control type 【New model】
(1) Decrease plumbing weight ・Decrease weight and cost of the output pressure plumbing in comparison with Present model. ・By High-strength Copper pipe adoption, Furthermore, decreased plumbing weight and improved installation. (The welding work in the short time and bending of the plumbing is possible.)
#14
Ex. 8 refrigeration systems and 3 frozen systems by 20HP
Present model Airtight examination pressure:12MPa
Transfer Pressure plumbing Section
OD19.05 (t2.4) Transfer Pressure plumbing Section
OD19.05 (t1.6) Transfer Pressure plumbing Section
OD15.88 (t1.1)
(2) Simplification of adjustment for appropriate refrigerant quantity ・Complicated adjustment for appropriate refrigerant quantity becomes needless at Operation check. ・The additional setting of Refrigerant Adjustment Tank becomes needless.
Copper High-
Strength Copper
Copper
Transfer Pressure control type Airtight examination pressure:8MPa
Cost decrease
18%
Weight decrease
59%
Weight decrease
31%
Solutions -Development of Pressure adjust control Improvement for installation by the adoption of Pressure adjust control type
2Fans→1Fan decrease of
running sound
Compact design by the change of the main body size. More compact at light weight than R404a model. ※1
Size 3.09 m3
Weight 594 kg
Size 2.05 m3
Weight 480 kg
※1 It is a about 20HP. (R404a model: 530kg)
1,938mm
1,190mm 890mm
20馬力 20馬力
① 20HP/15HP
1,790mm 890mm 1,938m
m
Present model
#15
Pressure adjust control type New model
Weight decrease
20%
Size decrease
34%
Solutions -Development of Pressure adjust control Small sizing&light weighting
890mm 890mm
1,938mm
1,260mm
Compact design by the structure change to side flow. The weight is the same as R404a model. ※1
1,350mm 586mm
Size 1.53 m3
Weight 330 kg
Size 0.99 m3
Weight 255 kg
#16
Present model
Pressure adjust control type New model
Weight decrease
23%
Size decrease
35%
※1 R404a model :255kg
② 10HP
Solutions -Development of Pressure adjust control Small sizing&light weighting
Low-temp.
Mid-temp
June,2015 Release
#17
Pressure adjust control type
New model
High Pressure type
Low-temp.
Mid-temp
Low-temp.
Low-temp.
Mid-temp
Sep.,2015 Release
May,2015 Release
Mid-temp
Present model
Low-temp.
Mid-temp
New model
Low-temp.
Mid-temp
New model
New model
Present model
Present model
15/20HP
10HP
2HP
15/20HP
10HP 10HP
2HP
Solutions -Development of Pressure adjust control Series lineup of Pressure adjust control type
Energy saving confirmation results (by Present model)
• Carried out at 6 stores
• Efficiency and annual CO2 emission was
compared to the conven6onal
refrigera6on unit (R404a Inverter)
Actual installed example
#18
Confirmation results -At refrigerator temperature-
* 12.9%-18.2%, 6 stores on Average
#19
The actual installed example in the Kyushu region
Confirmation results -At freezer temperature-
* 17.4%-32.2%, 6 stores on Average
#20
The actual installed example in the Kansai region
Confirmation results -Annual CO2 emission-
Freezer Temperature
63%
Refrigerator Temperature
56%
0 50
100 150 200 250 300 350 400
Freezer temperature
Refrigerator temperature Total
Direct influence Indirect influence
Comparison of R404a and CO2 Refrigeration Unit
CO2
CO2 CO2
R404a
R404a
R404a
Ann
ual C
O2 e
mis
sion
Direct influence of CO2 refrigerant ‘almost zero’
Annual CO2 emission
about60% reduc6on
#21
Issues of CO2 units and our Future Action
1. Further Cost Reduction
à Reduction of installation cost by the adoption of Pressure adjust control type. ・Supply chain maintenance of High-strength Copper pipe and connection parts. ・Standardization of various parts in condensing unit.
3. Training of Installers
à Trainings for CO2 system installation is key issue. (Installation, Operation check, and Service Maintenance) Service Manual was prepared and Training courses shall be carried
accordingly.
#22
2. Product Improvement
à Efficiency, Noise, and Vibration can be further improved. ・Product Line-up need to be improved. ・Outdoor units to be developed 25HP/30HP (reduction of systems per store) and Indoor units to be diversified.
Thank you very much!
.