Making sense of innovations in energy saving technologies

8/12/2019 Making sense of innovations in energy saving technologies

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ENERGY EFFICIENCYMaking sense of innovations in

energy saving technologies.


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Overview Emerson Climate Technologies

Energy Efficiency Gains in

Commercial HVAC

Through Compressor Modulation

Commercial Refrigeration

With Electronic Controls for Low Condensing Pressure

Industrial Refrigeration

With Industrial Heat Pumps


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Emerson is a Global Techno logy Leader inMany Markets

#1 Compressors

#1 Controls

#1 Alternators

#1 Fluid Control

#1 Ultrasonic Welding

#1 Food Waste Disposer

#1 Plumbing Tools

#1 Wet/Dry Vacuums

#1 Integrated Mobile Point-of-CareCarts

#1 Control Valves & Regulators

#1 Measurement Devices

#1 Wireless Devices

#1 AC & DC Power Systems#1 OEM Embedded Power

#1 Precision Cooling Systems

#1 Access & Control (KVM)

#1 Power Switching & Controls


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Emerson Brands


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Emerson Climate Techno logies B rands


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Commercial HVAC







7/24Emerson Confidential

Core A ir Condi t ion ing Market Trends

Efficiency

Compressor Is Largest Consumer Of Power In AC System

Emerson Offers Compression Technologies To Meet MultipleEfficiency Requirements And Tiering Strategies

Capacity Modulation

Important Driver Of Efficiency Improvement / Energy Savings

Load Matching

Superior Comfort / Humidity Control

Emerson Offers Full Range Of Modulation Technologies

Multiples, UltraTech, Digital, Variable Speed

Diagnostics & Communication Emersons CoreSense Technology Uses Compressor As A Sensor

Enhanced Reliability, Performance, Diagnostics


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Copeland Scrol lTMModulation Technolog ies

Multiple

Compressors UltraTech Digital

Variable

Speed

Technology Manifolding MechanicalUnloading

MechanicalUnloading

SpeedControl

ModulationRange

Stepped 67% or 100% 10-100% 25-100%

Full Load

Efficiency+ + + + + + + + + + +

Part LoadEfficiency + + + + + + + + +Applied

Cost $ $ $ $ $ $ $ $



System* Performance Comparison UsingDif ferent Compression Techno log ies

Compression

FixedCompressor

EvenFixed

Tandem

VariableSpeed

Tandem

Capacity Steps System Rating

Performance

Infinite

3

1

2

Energy $$ Savings

UnevenFixedTandem

+10%

+2%

+27%

-5%

-1%

-20%

Total+39%

Total-26%

* 20T Chiller Example


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Li fe Cycle Cost Compar ison20 Ton Roo ftop Unit In Dal las

Annual Operating Cost $8,769 $6,826 $1,943

Equipment Life 15 Years 15 Years

Life Cycle Operating Cost 131,535 102,390 29,145

NPV Of Life Cycle Op. Cost 75,058 58,424 16,634

Installed Cost 40,000 48,000 (8,000)

Total Cost Of Ownership $115,058 $106,424 $8,634

IRR 23.2%Payback 4.1 Years

Low Eff. High Eff.Unit 1 Unit 2 Difference

Operating 92 Hrs/Wk At $0.12/KWH; 8% Cost Of Capital

Unit 1: 9.5 EER At ARI And 9.8 IEER;

Unit 2: 11.7 EER At ARI And 12.7 IEER (+30%)


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Digital Scro l lTMSystem Examp leField Retrof i t

Compression

FixedCompressor

DigitalScroll

Capacity Steps

Infinite

1

Infinite

Energy $$ Savings

-29%

-17%

Total-46%

* 5Ton Rooftop Small Office Example

Digital Scroll Var. SpIndoor

FanDigital ScrollTM IsA Cost Effective

CapacityModulationTechnology That

EnablesSignificant

System Energy

Savings



Eff ic iency Gains for New and Exist ingEquipment

New Equipment

High Efficient Systems Are Readily Available Today UsingModulation Technologies

Multiples

Digital Scroll

Variable Speed Scroll

Specifying Is The Right Technology Is Key To MaximizingEnergy Savings

Existing Install Base

Opportunities For Energy Savings Via System Retrofits Digital Scroll Is A Cost Effective Solution, In Particular When

Coupled Variable Speed Indoor Fans

VFDs Could Also Be Used With Existing Induction MotorFixed Scroll Compressors (For An Approved Frequency

Range)

Copeland Scroll

Digital Retrofit Kit


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Commercial HVAC








4

8

12

16

20

80

100

120

140

160

50F 70F 90F 110F

Power(kW)

Capacity(kB

tu/hr)

Condensing Temperature

Compressor Performance

Low Condens ing Operat ion Benefi tsIn Commercial Refr igerat ion

Power

Capacity

36% IncreaseIn EER

Improved Efficiency

30% Annual Savings Potential

Enhanced Reliability

Lower Compression Ratios

90% Less Cycles

Precision TemperatureControl

Improved Product Quality

Faster Pulldown

15% More Capacity @ 80F SCT

Lower Refrigerant Charge

25 Lbs In 15HP System

0

50

100

Temperature(F)

System Condensing Temperature

105F Min.

70F Min.

AmbientTemperature


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Low Condensing Operat ion Enabled ByElect ronic Con tro l & Compressor Modulat ion

System Changes Required:

1. Remove Head Pressure Control Valve Minimum Condensing 105F => 80F

2. Add Variable Speed Fan Control

3. Remove 25 lbs. Refrigerant

4. Switch To Electronic Expansion Valve

5. Add Compressor Modulation

2

Low Condensing Setup1

3

4

5

80F

Typical Setup1

42

5

105F

3


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Low Condensing Retrof it ExampleTheoret ical Energy Comparison (Compresso rs Only)

Typical

System

Low Condensing

System105F SCTMinimum

80F SCTMinimum

30 HP Unit

2 x 3DS3R17

Capacity (Btu/hr) 456,000 526,000 15%Capacity Increase

AEER 20.58 29.65

Annual Energy Usage(KWh)

161,740 112,28031%

Energy Reduction

Total Energy Cost/Yr.($0.08kw/hr)

$12,940 $8,820$3,958/yr

Energy Savings

All Capacities are based on 45 F Evaporating Temp.

Total Energy Cost of Compressor for 8760 hrs per year

AEER : Annual Energy Efficiency Ratio (BTU/Input Power) Based on Annual Weighted Avg. Ambient Temperatures for Toronto Area

All calculations were done using Copeland 3DS3R17ME-TFE Compressor Data

$40K Annual Savingsfor a 10 Unit Facility


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Low Condensing Retrof i t ExampleActual Energy Compar ison - Jan. 21s tthru 28th

Load Profile for CRAC 116 and CRAC 150

Total Energy Used for this Period

CRAC 116 7007.33 kWh

Temperature CCRAC 150 5711.98 kWh 1295.35 kWh 23%

HP SCC Floating Head ProjectFrom: January 21, 2013 00:00:00

To: January 28, 2013 00:00:00

30.91840339

-20

-10

0

10

20

30

40

50

kWTot

al,

C

Time

kW Load Profile

www.eagroup.on.ca

1295 kWh Savings23% Energy Reduction

Typical System

Low Condensing SystemkWh

C

Ambient
http://www.eagroup.on.ca/http://www.eagroup.on.ca/


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Commercial HVAC







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Heat Pump App l icat ionsDriven by Savings

80%65%

97% 82% 97%

Water HeatingEnergy Efficiency

+500%

0.0

1.0

2.0

3.0

4.0

5.06.0

SteamBoiler

System

SteamBoiler

System w/

Economizer

DirectContact

Hot Water

Heater

Heat PumpHot Water

System

Combustion Efficiency

System Efficiency


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(circa 2008)

Limi tat ions Ammonia Heat Pumps

Compressors are Limited by Pressure

(circa 2008)

Twin ScrewHigh BearingLoads

Challengedat HighPressures

Single ScrewBalancedLoads

Suitedfor HighPressures


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Scavenging Ammon ia Heat Pumpfor Meat Process ing - USA

VSSH-451 delivers:

170 GPM Water at 145F

+$31/hour savings
http://localhost/var/www/apps/conversion/tmp/scratch_1/Vilter%20Ammonia%20Heat%20Pumps%20-%202012-01-18/Scavenging%20Heat%20Pump%20Package.mov


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Self-Con tained Ammon ia Heat Pump i.e.for Chocolate Processing England

(2) VSSH-451 deliver:

470 tons of cooling

135 GPM of 140F water

+$85/hour savings


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Condensing Uni t Ammon ia HeatPump for Pou l t ry Process ing - Chi le

(2) VSSH-1201s deliver:608 tons at +14F suction348 GPM of 126F water+$100/hour savings


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(Consider i t So lved)

Documents

Making sense of innovations in energy saving technologies