Transcript PowerPoint プレゼンテーション

SANYO CO2 Technologies
at
Ahlsell Seminar in Norway
SANYO Airconditioners Europe.
Kjell Lundén
Nordic Branch Office
21 April, 2008
CONTENTS
1. Introduction of CO2 Products
2. Why CO2 as refrigerant for Heat Pump ?
3. Technology of Sanyo CO2 ECO
3-1. Compressor Design
3-2. Introduction of CO2 ECO
4. Summary
CONTENTS
1. Introduction of CO2 Products
2. Why CO2 as refrigerant for Heat Pump ?
3. Technology of Sanyo CO2 ECO
3-1. Compressor Design
3-2. Introduction of CO2 ECO
4. Summary
Natural Ref. used Products all around the world
Residential
House-hold Refrig.,
using small amount of HC
HC（R600a）
Commercial
Ammonia HP chiller
For A/C
Ammonia （NH3）
ＣＯ２/Ammonia
Cascade system
High side NH3 and Low side CO2
HEAT PUMP
Heat Pump Water Heater
4.5-6kW
CO2（R744）
Vending Machines
Bottle Coolers
CO2（R744）
Hydro Space Heater
4.5-9kW
HEAT PUMP
Commercial HP
CO2（R744）
Water Heater
CO2（R744） 25-600kW
CO2 (R744) is the promising refrigerant as post HFC.
 It is not the Future Technology at all !
CO2 Heat Pump Water Heater Market in Japan
■the number
of units sold in Thousands (Sanyo estimate)
（Thousands）
900
800
460L ~
460Ｌ以上
370Ｌ
370L
300Ｌ以下
~ 300L
Small self
小型機
contained type
800
700
600
650
500
267
450
220
400
350
300
225
200
65
100
336
550
81
130
70
28
93
148
03
03年
04
04年
05
05年
169
123
209
368
292
259
8
0
06
06年
07
07年
330
25
39
80
(08)
08年
(09)
09年
(10)
10年
In Japan, most of HPWH uses CO2 instead of HFC, simply
because CO2 is more suitable than HFC for heating application
.. …
WHY ??
CONTENTS
1. Introduction of CO2 Products
2. Why CO2 as refrigerant for Heat Pump ?
3. Technology of Sanyo CO2 ECO
3-1. Compressor Design
3-2. Introduction of CO2 ECO
4. Summary
Reason #1. CO2 is Natural
Montreal Protocol.
Kyoto Protocol → Natural refrigerant with Energy
savings
■ Characteristics of natural refrigerants
Natural
Refrigerant
HFC
HCFC
ODP
GWP
Flammability
Toxicity
Natural
Substance
CO2
0
1
－
－
Yes
HC
0
3
++
－
Yes
NH3
0
≒0
+
+
Yes
R134a
0
1300
－
－
No
R410A
0
1900
－
－
No
R407C
0
1600
－
－
No
R22
0.055
1700
－
－
No
CO2 is Environmentally Friendly: No ODP, negligible GWP
CO2 is Safe: Nonflammable, Nontoxic, no recovery required,
Reason #2. CO2 is Good for Heat Pump
Point 1
CO2 (R744) do not condense at high side of Heat Pump cycle because the
critical point is lower than working pressure. (Transcritical Cycle)
High Volumetric Capacity, Small Pressure Drop.
Temperature
curve
Pressure ［MPa］
Critical Point（31℃）
CO2
●
●
HFCs
Critical Point
R410A 72℃
R407C 86℃
R134a 101℃
R404A 72℃
Enthalpy (kJ/kg)
Point 2
CO2 (R744) has high pressure and high density even at low ambient such
as -20℃.  High Heat Pump Performance even at Nordic Area.
Reason #2. CO2 is Good for Heat Pump
Point 3
Because it is Transcritical cycle, efficiently heat up the water.
HFC
Temp.
condensation
of refrigerant
CO2
Ref. IN
Ref. IN
Temp.
90℃
Water OUT
65℃
The larger the temp.
difference, the better
the efficiency.
Water OUT
Water
Ref. OUT
Ref. OUT
Water IN
Water
Water IN
Inlet temp also
affect the system
efficiency a lot.
Point 4
In addition to the non-condensation property,
CO2 has high heat transference ratio.
→ better Heat Pump efficiency, and Hot Water（90℃） can be obtained.
Summary: Characteristics of CO2 as refrigerant
Advantages:
Green
1. Environmentally friendly (ODP=0, GWP=1) Refrigerant
2. Nonflammable, Nontoxic
CO2
3. No recovery or recycling required
4. Worldwide availability
5. High volumetric capacity and Heat transfer
6. Heat pump ability at low temperature ambient
Best Refrigerant for Heat Pump!
Especially in the Cold Climate (-20℃)
Challenge:
High pressure （12MPa or more） & Large pressure difference
Advanced technologies were required,
especially for Compressor and Refrigeration system.
Technology Break-through by Sanyo
CONTENTS
1. Introduction of CO2 Products
2. Why CO2 as refrigerant for Heat Pump ?
3. Technology of Sanyo CO2 ECO
3-1. Compressor Design
3-2. Introduction of CO2 ECO
4. Summary
Feature of Sanyo CO2 Compressor
Since Y2001, The World’s First Rotary 2-Stage CO2 Compressor
・2-Stage Compression Mechanism in One Compressor
against large pressure difference
・Internal Intermediate Pressure Structure
against high working pressure
・Very efficient DC Brushless Inverter Motor
comply with varied Heating Load
・SANYO’s Unique Technologies
Excellent Processing & Assembly Technology
Optimized Pump Dimension
System Advantages
belong to only 2-Stage Compressor
High Performance
High Reliability
Low-Vibration
Low-Noise
Compact
Design
Feature of Sanyo CO2 Compressor
Working for Heating Applications.
High
Pressure Motor
Low
Shell Pressure
2nd Stage
Internal
Intermediate
Pressure
1st Stage
Feature of Sanyo CO2 Compressor
Working for Heating Applications.
Heat
the Water
過熱能力高い
without
condensation
Low
高温出湯可能
High
Motor
Shell Pressure
Pressure
圧力（ＭＰａ）
Pressure
(MPa)
40 50 60 70℃
14
12
10
２段圧縮：Compression
2-stage
低温時の過熱能力高い
realizes
the high
（高圧縮比運転可能）
isentropic
efficiency
and high reliability
8
6
4
2
Internal
Intermediate
Pressure
0
100
200
300
400
500
600
Enthalpy
(kJ/kg)
ｴﾝﾀﾙﾋﾟｰ
CONTENTS
1. Introduction of CO2 Products
2. Why CO2 as refrigerant for Heat Pump ?
3. Technology of Sanyo CO2 ECO
3-1. Compressor Design
3-2. Introduction of CO2 ECO
4. Summary
CO2 ECO System Features
Heater
(radiator)
For
Shower
Hot Water
Cold Water
Gas Cooler
Expansion Device(No.1) (Main)
W-W
HX
Heater
9kW
Inter . Heat
Excha ng er
Second St.
First St.
Heater
6kW
Expansion Device(No.2)
(Bypass )
Compressor
Mixing
Valve
Accumlator
Water
Pump
Evaporator
For HP
Ｐ
Sanyo Original CO2
Technology
Only Available for Sanyo Original 2-stage CO2 Cycle !
This Technology was applied to new 9kW CO2 ECO!
Hot Water
Cold Water
Gas Cooler
Second St.
Expansion Device(No.1)(Main)
Inter. Heat
Excha nger
First St.
Expansion Device(No.2)
(Bypass )
Compressor
Evaporator
Accumulator
State of the Art Technology !
New Refrigerant Circuit “Split Cycle”
Only Available for Sanyo Original 2-stage CO2 Cycle !
Hot Water
Cold Water
Gas Cooler
Expansion Device(No.1)(Main)
Inter. Heat
Excha nger
Second St.
First St.
Expansion Device(No.2)
(Bypass )
Compressor
Accumlator
Evaporator
(Data) New Refrigerant Circuit “Split Cycle”
Cold Water
Conventional C ycle （
O utdoorTem p.－20℃、3.0kW 、40→55℃）
Gas Cooler
Pressure (M pa)
Hot Water
Expansion Device(No.1)(Main)
Inter. Heat
Excha nger
Second St.
M ain C ir.
14
12
10
8
6
4
2
0
400
500
600
700
Enthalpy(kJ/kg)
800
900
Addition of split cycle
First St.
Expansion Device(No.2)
Accumlator
Evaporator
Pressure (Mpa)
(Bypass )
Compressor
Main Cir.
Bypass Cir.
Split Cycle （Outdoor Temp.－20℃、3.0kW、40→55℃）
14
12
10
8
6
4
2
0
400
500
600
700
Enthalpy(kJ/kg)
800
900
Adjustment of COMP Hz
- Heat Pump Unit COP is increased
by 17% at -20℃, by 16% at -10℃.
- Heating System Ave. COP is increased by 8%.
Pressure (Mpa)
- Heating Capacity is increased by 50% at -20℃.
（Return Temp. ;40℃ ,Output Temp.；55℃）
Split Cycle （Outdoor Temp.－20℃、4.0kW、40→55℃）
Main Cir.
Bypass Cir.
14
12
10
8
6
4
2
0
400
500
※Data source:
Sanyo test data
600
700
Enthalpy(kJ/kg)
800
900
Strength of CO2 ECO for Northern Europe
Outlet Water
Sanyo Original Freeze
Prevention Coil
Inlet Water
Tank Unit
Expansion
Valve
Air Flow
Air – Gas
Heat Exchanger
Heat Pump Unit
Gas – Water Heat Exchanger
Air
Low Pressure
Gas
Air
Compressor
High Pressure
Hot Gas
Accumulator
*Cross-section Diagram
at the bottom of the Evaporator
Actual Effect
of Evaporator
Special Refrigerant flow was adopted to prevent heat exchanger coil from
freezing without stopping the operation. (No Heater, No reverse cycle required)
Strength of CO2 ECO for Northern Europe
Heat
Capacity
Comparison
ﾍ ﾞﾝ Pump
ﾁ ﾏ ｰ ｸ _欧州ﾒｰ
ｶ 製HPの加熱能力の比較
Capacity
Heat Pump
加熱能力　[ｋW ] (kW)
11
10
Actual Test Results by Sanyo Labo.
Sanyo
三洋9kW
9
8
Co. A
Co. B
Co. C
SANYO
SHPC90GDN
Dimension
H1045
W1200
D 500
H1040
W1280
D 407
H 952
W1086
D 600
H1230
W 930
D 340
Weight
132kg
135kg
150kg
105kg
Refrigerant
R404A
2.0kg
R407C
2.2kg
R407C
2.6kg
CO2
1.6kg
STOP at
-20℃
STOP at
-11℃
5.0
8.0
―
―
1.6
1.8
10.4
9.0
9.0
9.0
3.2
3.2
3.0
3.2
Model
Co.
A
NIBE
7
6
Co.KC
CC
5
Co. CBTC
4
Outlook
3
NCo.
IB E_Fi
A ghter 2 0 2 0
B ir
CCo.
TC _EcoA
KCo.
C C _ACrctec 1 0
SANYO
三洋_S
H P-9kW
C90G DN
2
1
0
-30
-20
-10
0
10
Ambient Temp (℃)
外気温度　[℃]
ﾍ ﾞﾝ ﾁCOP
ﾏ ｰ ｸ _欧州ﾒ
ｰ ｶ 製H PのC O Pの比較
Comparison
(W/W)
COP
C O P　[-]
4
Heating
Capacity[
Amb. Temp. kW]
-20 ℃
3
COP
2
Heating
Capacity
Amb. Temp.
[kW]
7℃
Aghter 2 0 2 0
N ICo.
B E_Fi
Co.
B ir
C TC _EcoA
K CCo.
C _ACrctec 1 0
SANYO
三洋_S
H P-9kW
C 90G DN
1
-30
-20
-10
外気温度　Ambient
Temp[℃]
(℃)
0
10
COP
Correlations between
Outdoor Temp. and HP Performance
Demanded Heat Level for a house
NEW 1phase-230V 9kW
10kW
NEW 3phase-400V 9kW
5kW
-25℃
4.5kW CO2
-20℃
-10℃
0℃
10℃
10℃
SUMMARY
1. CO2 HP is widely used in Japan and best matches
the use in cold climate. (works even at -25℃)
 Big Energy Saving compared to HFCs.
2. Easy Installation. (No Drilling, No connection kit)
3. Sanyo 2-stage compression enabled the very
reliable CO2 cycle and cutting edge technology,
“Split Cycle”.
4. CO2 ECO is the best and only product for Nordic!
How CO2 can be applied to Cooling ?
Feature of Sanyo CO2 Compressor
Internal Intermediate Pressure Structure
High Pressure
Structure
High Pressure Structure
ON
OFF
Intermediate Pressure
Structure
ON
△F h
△F i
Intermediate Pressure Structure
The fluctuation of Inner Pressure is below 25%
compared with high Pressure Structure.
100%
65%
Thickness
：65%
Weight of the vessel ：50%
Internal intermediate pressure structure
gives high reliability and light weight design.
Feature of Sanyo CO2 Compressor
Lower Vibration & Noise
Comparison of compression torque fluctuation
100
2-Stage Compression
25
0
-25
1-Stage Compression
-100
0
90
180
270
360
Crankshaft Angle [deg]
2-Stage Compression Mechanism by 2-Rolling Pistons
can achieve high discharge pressure while suppressing
both vibration and noise.
Feature of Sanyo CO2 Compressor
Working for Cooling Applications.
High
Pressure Motor
Low
Shell Pressure
Intermediate
Pressure
2nd Stage
Inter Cooler
1st Stage
Feature of Sanyo CO2 Compressor
Only belongs to Sanyo’s 2 stage compressor!
Animation
AT：32℃
RH：65％
Feature of Sanyo CO2 Compressor
CO2 Compressor
Conventional Rotary Compressor for AC
Motor
Cylinder
Oil
Parts and materials used for CO2 compressor are almost same as those for
conventional HFC or HCFC rotary compressor for AC.
If the production quantity of CO2 compressors is closer to that of the
conventional rotary compressors for AC, the incremental cost of CO2
compressor will ultimately become the difference of material usage.
Feature of Sanyo CO2 Compressor
Comparison of various CO2 Compressors for 4.5kW～6.0kW
Same Heating Capacity, Half size.
▲146mm
Smallest and
Lightest
Co. A
Swing-Rotary
20kg
Co. B
Scroll
18kg
Co. C
Scroll
15kg
Sanyo
2-stage Rotary
9kg
Let’s go with the natural choice!
32
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