Feb. 3rd 2014 Panasonic Corporation Air-Conditioner Division

Gaku Shimada

Introduction of energy savings

by CO2 refrigeration systems

in SM/CVS

AGENDA

1. CO2 Compressor and Application Roadmap

2. Introduction of CO2 system for CVS and SM 3. Actual Installation and Monitored Energy Saving

Data 4. Issues and Future action

Heating

Refrigeration Light Commercial Bottle Coolers

Commercial Refrigerators

and Freezers

Heating and Cooling

Combined Products

Domestic Heat Pump

Water Heater

Commercial Water Heater

Heat Pump for Space Heating

15F

33F

20F

CO2 Compressor

Technologies

1. CO2 Compressor and Application Road Map

From 300W to 7,500W(10HP) Compressor and Heating / Cooling applications

AGENDA

1. CO2 Compressor and Application Roadmap

2. Introduction of CO2 system for CVS and SM 3. Actual Installation and Monitored Energy Saving

Data 4. Issues and Future action

2-1. CO2 System for Convenience Store (CVS) Walk-in Case Multi-Deck Cases

Reach-in Freezer

Desert Case

1.5kW Outdoor Unit (CO2)

10HP Outdoor Unit (CO2)

Master Controller

LPHP

MP

Motor Shell

100 200 300 400 500 6000

2

4

6

8

10

12

1440 50 60 70℃

100 200 300 400 500 6000

2

4

6

8

10

12

1440 50 60 70℃30

Pre

ssu

re （

MP

a）

Enthalpy （kJ/kg）

Compressor Mechanism (HP Shell type)

Inter Cooler

Gas Cooler

Oil Cooler

AIR

Ｓ

Ｓ

Split Heat Exchanger

Compressor

Oil Separator

Refrigerant

Reserve

Tank

◆ Key Technologies Split Cycle

◆ Layout image

2HP

2-2. CO2 System for Supermarket (SM)

Multi-Deck Super Show-Cases

Reach-in Freezer

10HP, 20HP Outdoor Unit (CO2)

Master Controller

Island Freezers

Motor Shell LPHP

MP

Compressor Mechanism (MP Shell type)

◆ Key Technologies

CompressorCompressor

Inter Cooler

Gas Cooler

Oil Cooler

AIR

Inter Cooler

Gas Cooler

Oil Cooler

AIR

CompressorCompressor

Ｓ

Ｓ

Internal HX

for Split cycleRefrigerator

Oil

Separator

Reserve

Tank Split Cycle

100 200 300 400 500 6000

2

4

6

8

10

12

1440 50 60 70℃

100 200 300 400 500 6000

2

4

6

8

10

12

1440 50 60 70℃30

Pre

ssu

re （

MP

a）

Enthalpy （kJ/kg）

◆ Layout image

10HP

AGENDA

1. CO2 Compressor and Application Roadmap

2. Introduction of CO2 system for CVS and SM 3. Actual Installation and Monitored Energy Saving

Data 4. Issues and Future action

3-1. Actual Installation in Japan (Dec. 2013)

Hokkaido: 7

Tohoku: 20

Kanto: 54

Chubu: 17

Kansai: 17 Kyusyu: 15 (incl. Okinawa: 1)

■ As of today, ４５０ CO2 units were installed in １４５ locations,

From subarctic Hokkaido (北海道) to subtropics Okinawa (沖縄),

From CVS to Hypermarket including Distribution Center.

2010 2011 2012 2013 2014

Estimation

Actual

Number of installed CO2 outdoor units

Number of Stores with

CO2 units

Chugoku/

Shikoku: 15

■ After the collaborative verification of system performance with key accounts and government, mass production started in 2010.

3-2. Monitored Energy Consumption Data (CVS and SM)

0

1,000

2,000

3,000

4,000

5,000

6,000

Jan. Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

0

5

10

15

20

25

30

35

CO2

HFC

Ambient

Am

bie

nt te

mp. (C

)

Energ

y C

onsum

ption (

kW

h / M

onth

)

Am

bie

nt te

mp. (C

)

Energ

y C

onsum

ption (

kW

h / M

onth

)

0

1,000

2,000

3,000

4,000

5,000

6,000

Jan. Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

0

5

10

15

20

25

30

35

CO2

HFC

Ambient

0

1,000

2,000

3,000

4,000

5,000

6,000

Jan. Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

0

5

10

15

20

25

30

35

CO2

HFC

Ambient

CO2 unit energy consumption is fairly compared with simulated data of Panasonic HFC unit.

Annual Energy Saving

26% Miyagi

Annual Ave. Temp.: 12.2 (C)

Annual Energy Saving

10% Okinawa

Annual Ave. Temp.: 23.6 (C)

0

10,000

20,000

30,000

40,000

50,000

60,000

Jan. Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

0

5

10

15

20

25

30

35

CO2

HFC

Ambient

0

10,000

20,000

30,000

40,000

50,000

60,000

Jan. Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

0

5

10

15

20

25

30

35

CO2

HFC

Ambient

Chiba

Annual Ave. Temp.: 20.9 (C) (May-Dec)

Aichi

Annual Ave. Temp.: 16.0 (C)

Am

bie

nt te

mp. (C

)

Energ

y C

onsum

ption (

kW

h / M

onth

)

Am

bie

nt te

mp. (C

)

Energ

y C

onsum

ption (

kW

h / M

onth

)

Annual Energy Saving

21%

Annual Energy Saving

19%

CVS

CVS

SM

SM

AGENDA

1. CO2 Compressor and Application Roadmap

2. Introduction of CO2 system for CVS and SM 3. Actual Installation and Monitored Energy Saving

Data 4. Issues and Future action

4-1. Issues of CO2 units and our Future Action

1. Acquisition Cost Reduction

System Design simplification, Piping materials (tube and fittings)

standardization and availability / access improvement.

The reduction of cycles per store will also reduce the total cost.

(High Pressure Gas Safety Law need to be amended for CO2.)

2. Product Improvement

Efficiency, Noise, and Vibration can be further improved.

Product Line-up need to be improved. Indoor units to be diversified and Outdoor units to be standardized.

3. Training of Installers

Trainings for CO2 are indispensable. (Installation, Operation check, and Service Maintenance) Original Manual was prepared and Training courses were held.

FY2010 FY2011 FY2012 FY2013

# of Trainee 46 200 211 (250)

More than 650 people already took CO2 training course as of Dec. 2013

Contribute to the prevention of

Global Warming by utilizing CO2

4-2. Issues of CO2 units and our Future Action

In order to expand the use of CO2 refrigerant for Commercial

Refrigeration Sector in Japan, Cooperative actions in different levels

of industry Stake holders are required.

Manufacturers

System / Parts

Better efficiency

and less cost

Installers

Skill and Motivation Users Initiatives and

commitment Government

Promotion and

Restriction clarification

Contractors

Products Availability