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Copeland Digital ScrollTechnology & AdvantagesCopeland Digital ScrollTechnology & AdvantagesTechnology & AdvantagesTechnology & AdvantagesPresented by:

Bruce Hilsabeck

Application Engineer – CopelandAustralia / New Zealand

IntroductionIntroduction1. Scroll Compressor Basics

2. Digital Compressor Technology

3. Design Features

4. Operating Envelope

5. Energy Efficiency

6. Precise Load Matching

7. Simplicity

8. Reliability

9. Electromagnetic Interference

10. Online Support

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11 Scroll Compressor BasicsScroll Compressor Basics11. Scroll Compressor Basics. Scroll Compressor Basics

Compression Area

Scroll Scroll CompressorCompressor

Compression Area

Motor

Crankshaft

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Scroll SetScroll Set Profile Profile Scroll SetScroll Set Profile Profile

Fixed Scroll

Comprises Two Scroll Parts

Orbiting ScrollFigure 1 Figure 2

How The Scroll Compressor WorksHow The Scroll Compressor WorksHow The Scroll Compressor WorksHow The Scroll Compressor Works

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22 Digital Compressor TechnologyDigital Compressor Technology22. Digital Compressor Technology . Digital Compressor Technology

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Digital Scroll TechnologyDigital Scroll TechnologyVariable Capacity OutputVariable Capacity Output

• VRF systems• Chiller / HPs• Process Chillers• Dedicated HPs• Rooftops• Air-Driers• Refrigeration Cond Units

Digital Scroll Compressor

www.digitalscroll.com

• Variable Capacity Output• 10 – 100% Seamless Capacity

How the Digital Scroll ModulatesHow the Digital Scroll ModulatesHow the Digital Scroll ModulatesHow the Digital Scroll Modulates

The Digital Scroll uses binary modulation. It’s either ON (1) or it’s OFF (0).

1 – Coil is de-energized and the scroll plates close.

0 – Coil is energized and the scroll plates open.

The switching frequency (or cycle time) of the pulse is between 10 and 20 seconds.

Capacity modulation is a product of time/state or PWM.

The capacity of the Digital Scroll is 10% to 100% with infinite steps.

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Copeland Scroll Digital™Copeland Scroll Digital™How It Works How It Works -- AnimationAnimation

Modulation Mechanism (PWM Control) Modulation Mechanism (PWM Control) Modulation Mechanism (PWM Control) Modulation Mechanism (PWM Control)

Loaded (1)

Full Capacity

Scroll Separation1.0 mm

Unloaded (0)

Zero Capacity

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Seamless Capacity DeliverySeamless Capacity DeliverySeamless Capacity DeliverySeamless Capacity Delivery

Capacity % = (100 / Cycle Frequency)(Duty Time)

Example: Cycle Time = 10 Seconds

Capacity Loaded Time

10% 1.0 Second11% 1.1 Second12% 1.2 Second……25% 2.5 Second…50% 5.0 Seconds…90% 9.0 Seconds

33 Design FeaturesDesign Features33. Design Features. Design Features

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Copeland Scroll FeaturesCopeland Scroll Features

1. Low Side Design Vs. High Side Designg g g

2. Full Compliance (Axial And Radial)

3. Static Seals Vs. Dynamic Seals

4. Built-In Protective Devices

The LowThe Low--Side Design AdvantageSide Design AdvantageLower Internal Pressures & Lower Internal TemperaturesLower Internal Pressures & Lower Internal Temperatures

DischargeSuctionLow Pressure

High Pressure

Suction Discharge

Low Side High Side

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LowLow--Side Vs High Side DifferencesSide Vs High Side Differences

Conditions CopelandLow Side

D BrandHigh Side

Impact

Hot Surface Top Cap Entire Shell Safety, Wiring

Internal Pressure Low High Reliability

Internal Temperature Low High Reliability

Start Quick Cooling Slow Cooling Temperature Protection

Oil Pump Out Rate Low High Oil Level Protection

Liquid/Debris Handling Excellent Average Long-term Reliability

Radial ComplianceRadial Compliance

Debris

• Ensures Scroll Contact

ScrollScrollScroll

Radial Compliance

666

• But, Allows Scrolls To Separate Sideways

• So Debris And Liquid Can Pass Without Damage

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Axial ComplianceAxial Compliance

Maintains Constant, Even Pressure On

Floating Seal

Upper Scroll Even Pressure On

Scroll Tips

Floating Seal Is Key

• Optimizes Tip Loading

Scroll (Fixed)

• Pressure Balanced

• Eliminates Leakage

• Patented Design

Lower Scroll (Orbiting)

Advantages Of Full ComplianceAdvantages Of Full Compliance1. High Efficiency

1. Scrolls Wear In Rather Than Wear Out

2. Less Performance Variability

2. Durability/Reliability Enhancement

1. Better Liquid Handling

2. Better Debris Handling

3 No Wear Out Unlike Tip Seal Design3. No Wear Out Unlike Tip Seal Design

3. Low Sound Level

1. Smooth Spectrum And Good Sound Quality

4. Unloaded Start

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Static Seals Vs. Dynamic SealsStatic Seals Vs. Dynamic Seals

Dynamic Seal Static Seal

Static Seals Vs. Dynamic SealsStatic Seals Vs. Dynamic Seals

Dynamic Seals

– Wear

– Are Sensitive to Liquid and Debris

– Are More Quickly Damaged By Excess Heat

Static SealsStatic Seals

– Do Not Wear

– Are More Robust

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4 Operating Envelope4. Operating Envelope

Digital Scroll Operating EnvelopeDigital Scroll Operating EnvelopeDigital Scroll Operating EnvelopeDigital Scroll Operating Envelope

-40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20

R-410A Digital Prototype Envelope

Evaporating Temperature (°C)

100

110

120

130

140

150

160

170

180

36414651566166717681

0 35 30 5 0 5 0 5 0 5 0 5 0

nsin

g Te

mpe

ratu

re (°

F)

Condensing Tem

perature

70

80

90

-40 -30 -20 -10 0 10 20 30 40 50 60 70212631

Standard Operating Envelope

Con

den e (°C

)

Evaporating Temperature (°F)

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5 Energy Efficiency5. Energy Efficiency

Copeland Digital Copeland Digital Scroll Scroll Power SavingsPower Savings

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Partial Load Performance Partial Load Performance –– Digital ScrollDigital ScrollSnap Shot of Actual Calorimeter TestSnap Shot of Actual Calorimeter Test

Partial Load Performance Partial Load Performance –– Digital ScrollDigital ScrollSnap Shot of Actual Calorimeter TestSnap Shot of Actual Calorimeter Test

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Digital Scroll Data: Tested & PublishedDigital Scroll Data: Tested & PublishedIPLV Of IPLV Of 44..55 55 (Highest In Industry) (Highest In Industry)

HEFEI Inspection

Report

VRF AC (heat pump) unit

Released time:

Type:Record Number:

Released time:

Product Categories:

Energy Efficiency Grade:

Record details:

Manufacturer:

IPLV(C)

Normal Cooling Capacity:Cooling Power Consumption

Samsung Electronics

100%

75%

50%

25%

Part Load Testing

ConditionsScreenshot –China Energy Labeling Websitehttp://test.energylabel.govcn/

6 Precise Load Matching6. Precise Load Matching

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Full Modulation (10~100%)– Immediate Load Adjustment– Step Less Modulation– Close Temperature Control (+/- 1 K)

Direct Expansion System &Direct Expansion System &Copeland Scroll Digital ™Copeland Scroll Digital ™

Digital Modulating

% Load and Temperature Swing With Fixe Capacity Compressors

Load

90100110

100%

Digital Scroll : Capacity Output RangeDigital Scroll : Capacity Output Range

1020304050607080

% C

apac

ity

10%

I nver t er Syst em

Digital Scroll System

010

0 10 20 30 40 50 60 70 80 90 100 110

% Modulation

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7 Simplicity7. Simplicity

Inverter System ArchitectureInverter System ArchitectureInverter System ArchitectureInverter System Architecture

Electronic & Mechanical Architecture Complexity

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Drivers sideDrivers side--byby--sidesideDrivers sideDrivers side--byby--sideside

Simple Vs. Complex Electronic Architecture

Digital Scroll System ArchitectureDigital Scroll System ArchitectureDigital Scroll System ArchitectureDigital Scroll System Architecture

Simplified Electronic & Mechanical Architecture

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8 Reliability8. Reliability

Reliability Reliability -- Easy Oil ReturnEasy Oil ReturnReliability Reliability -- Easy Oil ReturnEasy Oil Return• Easy Oil Return During Low Loads

• No Oil “Pump Out” During Unloading

L d d C l G V l it S ffi i t T• Loaded Cycle Gas Velocity Sufficient To

Return Oil

• Don’t Need Oil Separator Or Oil Return Cycle

• Less than 1% oil pumped out to field

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Reliability PerformanceReliability PerformanceReliability PerformanceReliability Performance

Total Digital Compressor In Field 500,000+

Reliability 99.996%

9 Electromagnetic Interference9. Electromagnetic Interference

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Electromagnetic InterferenceElectromagnetic InterferenceElectromagnetic InterferenceElectromagnetic Interference

InverterEMC RegulationDigital Scroll System

1 3 th

1 1 th

7 th

5 th

1 3

1 1

7

5

EMW

1 9 th

1 7 th

Ratio 1 9

1 7

10 Online Support10. Online Support

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www.digitalscroll.comwww.digitalscroll.comwww.digitalscroll.comwww.digitalscroll.com