Kjell Lundén Nordic Branch Office SANYO CO 2 Technologies at Ahlsell Seminar in Norway SANYO...
-
Upload
sasha-whorton -
Category
Documents
-
view
219 -
download
2
Transcript of Kjell Lundén Nordic Branch Office SANYO CO 2 Technologies at Ahlsell Seminar in Norway SANYO...
Kjell LundénNordic Branch Office
SANYO CO2 Technologiesat
Ahlsell Seminar in Norway
SANYO Airconditioners Europe.
21 April, 2008
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
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
HEAT PUMPHEAT PUMP
HEAT PUMPHEAT PUMP
House-hold Refrig.,using small amount of HC
HC ( R600a)
Heat Pump Water Heater4.5-6kW
CO2 ( R744 )
Hydro Space Heater4.5-9kW
Ammonia HP chillerFor A/C
Ammonia ( NH3 ) CO2 /AmmoniaCascade system
High side NH3 and Low side CO2
Commercial HP Water Heater
25-600kW
Vending MachinesBottle Coolers
CO2 ( R744)
CO2 ( R744 ) CO2 ( R744)
Natural Ref. used Products all around the world
CO2 (R744) is the promising refrigerant as post HFC.
ResidentialResidential CommercialCommercial
It is not the Future Technology at all !
25 39 8070 93148
209259
292330
368
28
65
123
169
220
267
336
80
100
200
300
400
500
600
700
800
900
03年 04年 05年 06年 07年 08年 09年 10年
460L以上370L300L以下小型機
( Thousands )
130
225
350
450
550
650
800
81
460L ~
370L
~ 300LSmall self contained type
COCO22 Heat Pump Water Heater Market in Japan
03 04 05 06 07 (08) (09) (10)
In Japan, most of HPWH uses COCO22 instead of HFC, simply because COCO22 is more suitable than HFC for heating application
.. … WHY ??
■the number of units sold in Thousands (Sanyo estimate)
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
■ Characteristics of natural refrigerants
ODP GWP Flammability Toxicity Natural
Substance
Natural
Refrigerant
CO2 0 1 - - Yes
HC 0 3 ++ - Yes
NH3 0 ≒0 + + Yes
HFC
R134a 0 1300 - - No
R410A 0 1900 - - No
R407C 0 1600 - - No
HCFC R22 0.055 1700 - - No
Montreal Protocol. Kyoto Protocol → Natural refrigerant with Energy savings
CO2 is Environmentally Friendly: No ODP, negligible GWP CO2 is Safe: Nonflammable, Nontoxic, no recovery required,
Reason #1. CO2 is Natural
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.
Reason #2. CO2 is Good for Heat Pump
Enthalpy (kJ/kg)
CO2 (R744) has high pressure and high density even at low ambient such as -20 . ℃ High Heat Pump Performance even at Nordic Area.
Point 1Point 1
Point 2Point 2
Critical Point( 31℃)
CO2
HFCs
Critical Point R410A 72℃ R407C 86℃ R134a 101℃ R404A 72℃
Temperature curve
Pre
ssu
re [
MP
a]
●
●
Temp.
Temp.
HFC CO2
condensation
of refrigerant
Ref. OUT
Ref. IN
Water
Water
65℃
90℃
In addition to the non-condensation property, CO2 has high heat transference ratio. → better Heat Pump efficiency, and Hot Water ( 90℃ ) can be obtained.
The larger the temp.difference, the betterthe efficiency.
Inlet temp also affect the system efficiency a lot.
Because it is Transcritical cycle, efficiently heat up the water.
Reason #2. CO2 is Good for Heat Pump
Point 3Point 3
Point 4Point 4
Water OUT
Water IN
Ref. OUT
Ref. IN
Water OUT
Water IN
Green Green RefrigerantRefrigerant
COCO22
High pressure ( 12MPa or more ) & Large pressure difference
1. Environmentally friendly (ODP=0, GWP=1)2. Nonflammable, Nontoxic3. No recovery or recycling required4. Worldwide availability5. High volumetric capacity and Heat transfer6. Heat pump ability at low temperature ambient
Advanced technologies were required, especially for Compressor and Refrigeration system..
Advantages:
Challenge:
Best Refrigerant for Heat Pump!Especially in the Cold Climate (-20 )℃
Summary: Characteristics of CO2 as refrigerant
Technology Break-through by SanyoTechnology Break-through by Sanyo
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
・ SANYO’s Unique Technologies Excellent Processing & Assembly Technology Optimized Pump Dimension System Advantages belong to only 2-Stage Compressor
High Performance High Reliability
Low-VibrationLow-Noise
Compact Design
・ Internal Intermediate Pressure Structure against high working pressure
・ 2-Stage Compression Mechanism in One Compressor against large pressure difference
Since Y2001, The World’s First Rotary 2-Stage CO2 Compressor
Feature of Sanyo CO2 Compressor
・ Very efficient DC Brushless Inverter Motor comply with varied Heating Load
1st Stage
2nd Stage
Motor ShellLowPressure
HighPressure
Internal Intermediate Pressure
Working for Heating Applications.
Feature of Sanyo CO2 Compressor
Motor ShellLowPressure
HighPressure
Internal IntermediatePressure
Working for Heating Applications.
Feature of Sanyo CO2 Compressor
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℃
過熱能力高い高温出湯可能
圧力(MPa)
エンタルピー
2段圧縮:低温時の過熱能力高い(高圧縮比運転可能)
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℃
過熱能力高い高温出湯可能
圧力(MPa)
エンタルピー
2段圧縮:低温時の過熱能力高い(高圧縮比運転可能)
Heat the Water without condensation
2-stage Compression realizes the high isentropic efficiency and high reliability
Enthalpy (kJ/kg)
Pressure (MPa)
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
CO2 ECO System Features
First St.
Second St.
Inter . Heat
Excha nger
Evaporator
Gas Cooler
Expansion Device(No.1) (Main)
Compressor Accumlator
Hot Water
Cold Water
Expansion Device(No.2)
(Bypass )
P
Heater (radiator)
Heater 9kW
Heater
6kW
Water Pump
Mixing Valve
For Shower
W-WHX
For HP
Only Available for Sanyo Original 2-stage CO2 Cycle !
First St.
Second St.
Inter. Heat
Exchanger
Evaporator
Gas Cooler
Expansion Device(No.1) (Main)
Compressor Accumulator
Hot Water
Cold Water
Expansion Device(No.2)
(Bypass )
This Technology was applied to new 9kW CO2 ECO!
Sanyo Original CO2 Technology
State of the Art Technology !
New Refrigerant Circuit “Split Cycle”
Only Available for Sanyo Original 2-stage CO2 Cycle !
First St.
Second St.
Inter. HeatExchanger
Evaporator
Gas Cooler Expansion Device(No.1)(Main)
Compressor Accumlator
Hot Water Cold Water
Expansion Device(No.2)
(Bypass )
First St.
Second St.
Inter. HeatExchanger
Evaporator
Gas Cooler Expansion Device(No.1)(Main)
Compressor Accumlator
Hot Water Cold Water
Expansion Device(No.2)
(Bypass )
First St.
Second St.
Inter. HeatExchanger
Evaporator
Gas Cooler Expansion Device(No.1)(Main)
Compressor Accumlator
Hot Water Cold Water
Expansion Device(No.2)
(Bypass )
CO2 Compressor
Water Supply
Mixing Tap
Expansion Valve
Evaporator
Gas cooler
Radiatorfor Space Heating
Tank
Heat Pump Unit Tank Unit
Pump
PumpCO2 Compressor
Water Supply
Mixing Tap
Expansion Valve
Evaporator
Gas cooler
Radiatorfor Space Heating
Tank
Heat Pump Unit Tank Unit
Pump
Pump
(Data) New Refrigerant Circuit “Split Cycle”
First St.
Second St.
Inter. HeatExchanger
Evaporator
Gas Cooler Expansion Device(No.1)(Main)
Compressor Accumlator
Hot Water Cold Water
Expansion Device(No.2)
(Bypass )
First St.
Second St.
Inter. HeatExchanger
Evaporator
Gas Cooler Expansion Device(No.1)(Main)
Compressor Accumlator
Hot Water Cold Water
Expansion Device(No.2)
(Bypass )
First St.
Second St.
Inter. HeatExchanger
Evaporator
Gas Cooler Expansion Device(No.1)(Main)
Compressor Accumlator
Hot Water Cold Water
Expansion Device(No.2)
(Bypass )
Conventional Cycle OutdoorTemp. 20℃ 3.0kW 40→55℃( - 、 、 )
02468
101214
400 500 600 700 800 900Enthalpy(kJ / kg)
Pre
ssur
e (M
pa)
Main Cir.
Split Cycle Outdoor Temp. 20℃ 3.0kW 40→ 55℃( - 、 、 )
02468
101214
400 500 600 700 800 900Enthalpy(kJ / kg)
Pre
ssur
e (M
pa)
Main Cir.Bypass Cir.
Split Cycle Outdoor Temp. 20℃ 4.0kW 40→ 55℃( - 、 、 )
02468
101214
400 500 600 700 800 900Enthalpy(kJ / kg)
Pre
ssur
e (M
pa)
Main Cir.
Bypass Cir.
- Heat Pump Unit COP is increased- Heat Pump Unit COP is increased byby 17% at -20 ,℃ by 16% at -10℃.. - Heating Capacity is increased - Heating Capacity is increased byby 50%50% at -20℃at -20℃.. (( Return Temp. ;40 ,Output Temp.℃Return Temp. ;40 ,Output Temp.℃ ;; 55℃55℃
))
- Heating System Ave. - Heating System Ave. COP is increased byCOP is increased by 8%8%. .
※Data source: Sanyo test data
Addition of split cycle
Adjustment of COMP Hz
Outlet Water
Air
Heat Pump Unit
Tank UnitInlet Water
Gas – Water Heat Exchanger
Compressor
Accumulator
Expansion Valve
Air
Air – GasHeat Exchanger
Sanyo Original Freeze Prevention Coil
Actual Effect of Evaporator
High PressureHigh Pressure Hot GasHot Gas
Low PressureLow Pressure
GasGas
Air Flow
*Cross-section Diagram at the bottom of the 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
Model Co. A Co. B Co. CSANYOSANYOSHP-SHP-
C90GDNC90GDN
Outlook
DimensionH1045W1200D 500
H1040W1280D 407
H 952W1086D 600
H1230W 930D 340
Weight 132kg 135kg 150kg 105kg
Refrigerant R404A2.0kg
R407C2.2kg
R407C2.6kg
CO21.6kg
Amb. Temp.
-20 ℃
Heating Capacity[k
W]
STOP at-20℃
STOP at-11℃
5.0 8.0
COP ― ― 1.6 1.8
Amb. Temp.
7 ℃
Heating Capacity
[kW]10.4 9.0 9.0 9.0
COP 3.2 3.2 3.0 3.21
2
3
4
- 30 - 20 - 10 0 10 [℃]外気温度
CO
P [-
]
NIBE_Fighter 2020CTC_EcoAirKCC_Arctec 10
_SHP- C90GDN三洋
_ HPヘ ン゙ チ マ ー ク 欧州メー カ製 の加熱能力の比較
0
1
2
3
4
5
6
7
8
9
10
11
- 30 - 20 - 10 0 10
[
W]
加熱
能力
k
NIBE_Fighter 2020CTC_EcoAirKCC_Arctec 10
_SHP- C90GDN三洋
三洋
NIBE
CTCKCC
Heat Pump Capacity ComparisonHeat Pump Capacity Comparison
Ambient Temp ( )℃
He
at
Pu
mp
Ca
pa
city
(kW
) Sanyo 9kW
Ambient Temp ( )℃
CO
P (
W/W
)
COP ComparisonCOP Comparison
Strength of CO2 ECO for Northern Europe
Co. A
Co. CCo. B
Co. ACo. BCo. CSANYO 9kW
Co. ACo. BCo. CSANYO 9kW
Actual Test Results by Sanyo Labo.Actual Test Results by Sanyo Labo.
Correlations between Outdoor Temp. and HP Performance
10kW
5kW 4.5kW CO2
NEW 3phase-400V 9kW
Demanded Heat Level for a house
-20℃ 10℃0℃-10℃-25℃ 10℃
Conventional 9
.0kW HFC
Conventional 6.0kW HFC
NEW 1phase-230V 9kW
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 ECOCO2 ECO is the best and only product for Nordic!
SUMMARY
How CO2 can be applied to Cooling ?
Internal Intermediate Pressure Structure Internal Intermediate Pressure Structure
Internal intermediate pressure structure Internal intermediate pressure structure gives high reliability and light weight design.gives high reliability and light weight design.
High Pressure Structure
Intermediate Pressure Structure
Intermediate Pressure Structure
High Pressure Structure
Pre
ssu
re i
n C
ham
ber
[ M
Pa] ON OFF ON
100% 65%The fluctuation of Inner Pressure is below 25% compared with high Pressure Structure.
Thickness : 65%Weight of the vessel : 50%
△F h
△F i
Feature of Sanyo CO2 Compressor
Lower Vibration & Noise Lower Vibration & Noise
2-Stage Compression Mechanism by 2-Rolling Pistons2-Stage Compression Mechanism by 2-Rolling Pistonscan achieve high discharge pressure while suppressingcan achieve high discharge pressure while suppressingboth vibration and noise.both vibration and noise.
0 90 180 270 360
100
0
Crankshaft Angle [deg]
To
rqu
e F
luc
tuat
ion
-100
25
-25
Comparison of compression torque fluctuation
1-Stage Compression
2-Stage Compression
Feature of Sanyo CO2 Compressor
1st Stage
Motor ShellLowPressure
HighPressure
Intermediate Pressure 2nd Stage
Inter Cooler
Working for Cooling Applications.
Feature of Sanyo CO2 Compressor
AT :32℃
RH :65 %
Animation Only belongs to Sanyo’s 2 stage compressor!
Feature of Sanyo CO2 Compressor
CO2 Compressor Conventional Rotary Compressor for AC
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.
Motor
Oil
Cylinder
Feature of Sanyo CO2 Compressor
Co. ASwing-Rotary
20kg
Co. BScroll 18kg
Co. CScroll15kg
Sanyo2-stage Rotary
9kg
▲146mm
Same Heating Capacity, Half size.
Smallest andLightest
Comparison of various CO2 Compressors for 4.5kW ~ 6.0kW
Feature of Sanyo CO2 Compressor
Let’s go with the natural choice!Let’s go with the natural choice!
32
SANYO New VISIONSANYO New VISION
未来の子供たちに美しい地球を還そう未来の子供たちに美しい地球を還そうThink GAIAThink GAIA