Introduction of Panasonic New CO2 refrigeration system (Technical Part) Feb. 3 rd 2015 Panasonic Corporation Refrigeration and Air-Conditioning Devices Business Division Hidekazu Tachibana
# 1 AGENDA 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
Number of stores installing Panasonic CO2 refrigeration system in Japan and future prospect #2 1,750 Stores 1,700 GWP 1,500 Target year 2025 early clear 1 1,500 1,450 GWP 1,800 1,250 1,200 Supermarket 1,000 750 GWP 2,200 584 500 250 0 GWP 2,000 1,000 GWP 2,400 Convenience store FY2010 FY2011 FY2012 FY2013 FY2014 estimation FY2015 target FY2016 target FY2017 target FY2018 target 1 Numerical value of a GWP 1,500 and accomplishment year 2025 target established in a law by the Japanese Government
Solutions # 3 Solu6ons Development of Compressor Development of Split system New technology Development of Pressure adjust control
Solutions -Development of Compressor- #4 Structure of 2-stages compression CO2 rotary compressor Motor Casing Suction Discharge High Pressure 2nd-stage Intermediate Pressure Low Pressure Intercooler Air Flow 1st-stage
Solutions -Development of Compressor- # 5 Efficiency Issues and solutions of CO2 compressor Pressure difference reduction at 2-stages Refrigerant leakage reduction Compression efficiency improvement Weight and Cost Casing design pressure is Intermediate pressure Weight saving of the Casing Cost reduction Reliability Vibration and Noise Distribution of compression torque Load reduction to the sliding parts Reliability improvement Vibration and Noise reduction Reliability Discharge gas is cooled by the intercooler Efficiency Temperature of the sliding parts and the oil is reduced Reliability and Efficiency improvement
Solutions -Development of Split system # 6 Refrigeration circuit of 2-stage compression Air Flow Main Circuit Gas Cooler 2 nd stage Compression Air Flow Intercooler 1 st stage Compression Expansion Device Evaporator
Solutions -Development of Split system # 7 Refrigeration circuit of Split System Split Heat Exchanger Expansion Device Air Flow Gas CooIer 2 nd stage Compression Main Circuit Split branch Circuit Intercooler Air Flow 1 st stage Compression Expansion Device Evaporator
Solutions -Development of Split system #8 Ph diagram of 2-stage compression 8.4MPa 1MPa(-40deg) 34deg 18deg
Solutions -Development of Split system #9 Ph diagram of Split System 2deg 34deg Heat Exchange 3.4MPa(-1deg) 156% 18deg
Solutions # 10 Solu6ons Development of Compressor Development of Split system New technology Development of Pressure adjust control
#11 Solutions -Development of Pressure adjust control Annual operating pressure behavior of Present model Outdoor Unit Pressure 5MPa 9MPa Ｓ High Pressure Split Heat Exchanger Refrigerant Amount Adjustment Tank Ｓ Gas cooler Show case Compressor Low Pressure Spring Summer Autumn Winter Pressure Pressure Fluctuates with the season Enthalpy
#12 Solutions -Development of Pressure adjust control Annual operating pressure behavior of Pressure adjust control type Outdoor Unit Pressure 5.5MPa 6MPa Reduced Pressure by Intercooler Split Heat Exchanger High Pressure Show case Intercooler Gas cooler Compressor Low Pressure Pressure Summer Autumn Spring Winter Pressure Is constant in all season Enthalpy
Solutions -Development of Pressure adjust control #13 Comparison of the annual operating pressure behavior Present model Spring Summer Autumn Winter 5MPa 9MPa Pressure to showcase fluctuate 5MPa 9MPa with the season. Airtight examination pressure of the construction plumbing 12MPa. Pressure adjust control type New model Spring Summer Autumn Winter 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.
Solutions -Development of Pressure adjust control # 14 Improvement for installation by the adoption of Pressure adjust control type (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.) Ex. 8 refrigeration systems and 3 frozen systems by 20HP Present model Airtight examination pressure:12mpa Transfer Pressure plumbing Section OD19.05 (t2.4) Copper Weight decrease 31% Weight decrease 59% Transfer Pressure plumbing Section Cost OD19.05 (t1.6) decrease 18% Transfer Pressure control type Airtight examination pressure:8mpa Copper Transfer Pressure plumbing Section OD15.88 (t1.1) High- Strength Copper (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.
Solutions -Development of Pressure adjust control #15 Small sizing light weighting Compact design by the change of the main body size. More compact at light weight than R404a model. 1 ① 20HP 15HP Present model Size New model Pressure adjust control type decrease 1,938mm 1,938mm 34% Weight decrease 20% 890mm 1,790mm ２０馬力 Size 3.09 m3 Weight 594 kg 2Fans １Fan decrease of running sound 890mm 1,190mm ２０馬力 Size 2.05 m3 Weight 480 kg 1 It is a about 20HP. R404a model 530kg
Solutions -Development of Pressure adjust control #16 Small sizing light weighting ② Compact design by the structure change to side flow. The weight is the same as R404a model. 1 10HP New model Present model Pressure adjust control type Size decrease 1,260mm 1,938mm 35% Weight decrease 23% 890mm 586mm 1,350mm 890mm Size 1.53 m3 Size 0.99 m3 Weight 330 kg Weight 255 kg 1 R404a model 255kg
#17 Solutions -Development of Pressure adjust control Series lineup of Pressure adjust control type High Pressure type Present model Lowtemp. Pressure adjust control type New model Lowtemp. Mid-temp Mid-temp １５ ２０HP １５ ２０HP Present model Lowtemp. New model １０HP １０HP ２HP Lowtemp. New model Lowtemp. Mid-temp Mid-temp Mid-temp Present model Sep.,2015 Release New model ２HP June,2015 Release Lowtemp. Mid-temp １０HP May,2015 Release
Energy saving confirmation results (by Present model) # 18 Actual installed example Carried out at 6 stores Efficiency and annual CO 2 emission was compared to the conven6onal refrigera6on unit (R404a Inverter)
Confirmation results -At refrigerator temperature- #19 The actual installed example in the Kyushu region * 12.9%-18.2%, 6 stores on Averag
Confirmation results -At freezer temperature- #20 The actual installed example in the Kansai region * 17.4%-32.2%, 6 stores on Averag
Confirmation results -Annual CO 2 emission- # 21 Direct influence of CO 2 refrigerant almost zero Comparison of R404a and CO 2 Refrigeration Unit Annual CO2 emission 400 350 300 250 200 150 100 50 0 Direct influence Indirect influence R404a CO 2 Freezer temperature R404a CO 2 Refrigerator temperature R404a CO 2 Total Freezer Temperature 63% Refrigerator Temperature 56% Annual CO 2 emission about60% reduc6on
Issues of CO2 units and our Future Action # 22 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. 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. 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.
Thank you very much!.