A&P Fresh Market with A&P Fresh Market with UTC UTC Power Power PureComfortPureComfortTMTM 240M240M

Jim Kirk

Director of Engineering

The Great Atlantic & Pacific Tea Co.

Project TeamProject TeamProject TeamProject TeamFacility:

57,000 Sqft A&P Supermarket, Mt. Kisco, NY

Project Sponsors:

UTC Power

DOE/

Oak Ridge National Laboratory

Utility:

Con Edison

PureComfortPureComfortTM TM 240M for A&P240M for A&PPureComfortPureComfortTM TM 240M for A&P240M for A&P“Pre-Assembled” Integrated System:

Skid Mounted

4 - 60 kW microturbines

Gas Compressors

Carrier Double Effect Absorption Chiller

Cooling Tower

Chilled Water Pumping System

Provides 240 kW* of Electricity at 480v and 110 tons of Chilled water (95F day) or 900 MBTU Hot water (32F day)

* 240 kW is Gross Power at 59 F, Net Power is 228 kW at 59 F

PureComfortPureComfortTMTM 240M Skid 240M SkidPureComfortPureComfortTMTM 240M Skid 240M Skid

Microturbines

Gas Compressors

Chiller

Chilled Water Pump Station

Cooling Tower

Chilled Water

Connections

Electrical Panels / Pump Controls

Exhaust Manifold

60’

12’

6”

Chiller Exhaust / Desiccant Connection

PureComfortPureComfortTMTM 240M 240MPureComfortPureComfortTMTM 240M 240M

Microturbines

Chiller Enclosure

Cooling Tower

Gas Compressors

Exhaust Duct

Exhaust Diverter Valve

System IntegrationSystem IntegrationSystem IntegrationSystem Integration

System Provides:

• 240* kW of Electricity

- Grid Parallel

- Grid Dependant

- Base Load

• Chilled Water:

- Space Cooling

- Refrigerant Sub-Cooling

• Desiccant Regeneration:

- Direct Exhaust Heat

• Hot Water:

- Winter Operation

- Space Heating

* 240 kW is Gross Power at 59 F, Net Power is 228 kW at 59 F

System Integration (Heat Recovery)System Integration (Heat Recovery)System Integration (Heat Recovery)System Integration (Heat Recovery)

Chilled Water Pump

Cooling Tower

Cooling Water Pump

Air-Cooled Condenser

Vapor CompressionRefrigeration Cycle

Waste Heat DrivenLiBr/H2O Absorption Cycle

RefrigerantSub-Cooler

DesiccantSystem

AmbientAir

System Integration (Electrical)System Integration (Electrical)System Integration (Electrical)System Integration (Electrical)

System Integration (EMS Controls)System Integration (EMS Controls)System Integration (EMS Controls)System Integration (EMS Controls)Controls: Microturbines, Chiller & Cooling Tower are controlled Via On-Board

Controls

Chilled Water Pumps, Bypass Valves & Desiccant Wheel are Controlled Via Building / Refrigeration EMS System (Danfoss AKC-55)

Danfoss System controls Bypass Valve via two algorithms (Summer & Winter). A Manual Switch is used change from Summer to Winter Mode of Operation

Sub-cooler solenoid valves are “always on” in Summer Operation

Danfoss System Provides “Chiller Run” Input Only

Heating, Cooling & Desiccant have “redundant” Systems

System Installation (Roof Top)System Installation (Roof Top)System Installation (Roof Top)System Installation (Roof Top)

PureComfort 240 Munters HVAC

Pre-Fabricated Refrigeration Penthouse

Chilled Water Supply / Return Refrigeration

Sub-Cooling

Water Coil

Desiccant Exhaust Manifold

System Installation (Roof Top)System Installation (Roof Top)System Installation (Roof Top)System Installation (Roof Top)

Pure Comfort System

Munters HVAC

Desiccant Duct

Chilled Water Pipes to Refrigeration Sub-Coolers

Screening

Refrigeration Condensers

System InstallationSystem InstallationSystem InstallationSystem Installation

Challenges

– Site Required a Roof Top Installation

– Weight of System Required Additional Steel Support

– Location / Pre-Fabricated Weight Required 600 ton Crane to Install

– Pre-Fabricated Size Of System Required Special Permitting for Delivery (Over Width & Over Height)

– Mechanical / Electrical Engineers not Familiar with Technology

– Utility not Familiar with Technology

System InstallationSystem InstallationSystem InstallationSystem Installation Benefits of Pre-Fabrication

– Quality Control – Assembled in Controlled Environment

– Simplified Installation: Seven Point Connection

• Chilled Water Supply & Return

• 400 amp 480v

• High Natural Gas (5 PSI)

• Make up water

• Tower / Chiller Drain

• Exhaust Duct to Desiccant

• Phone Line

– Less Design Required by Local Project M/E Engineers

– Very Accurate Documentation for Utility Interconnection Applications

– Faster Start-up & Commissioning

System Installation (Costs)System Installation (Costs)System Installation (Costs)System Installation (Costs) Cost

UTC PureComfortTM 240M $500K*

Coil In Munters Unit $8K

Steel $55K

Crane $37K

Electrical $27K

Plumbing $50K

Desiccant Ducting $8K

GC Management $14K

Total: $699K

$2,900/kWe Installed* Pre DOE Funding

System Installation (Costs)System Installation (Costs)System Installation (Costs)System Installation (Costs)What Could We Do Better Next Time?

Put It On The Ground! Remove Redundant Systems! Cost

UTC PureComfortTM 240M $475K*

Coil In Munters Unit $8K

Removing Redundant Mechanical Systems (Munters) - $25K

Steel $55K

Crane $37K

Electrical $18K

Plumbing $50K

Desiccant Ducting $28K

GC Management $10K

Total: $564K

$2,350/kWe Installed* Pre DOE Funding

System Inst. (Utility Interconnection)System Inst. (Utility Interconnection)System Inst. (Utility Interconnection)System Inst. (Utility Interconnection)Utility Interconnection:

Was Not an Issue!

– Turbines are NY State Type Tested and Approved for Interconnection

– NY State Law Forces Utilities to accept Standard Type Tested Interconnection

– Hardest Part was Getting to “the Right Person” within the Utility and “Educating” them about the System.

– Overall Application and Approval Process was very Simple

– Did Not Cause Any Delay or Additional Expense for Project

System Installation (Commissioning)System Installation (Commissioning)System Installation (Commissioning)System Installation (Commissioning)Commissioning:

A Problem Develops:

– Turbines will not automatically re-start in “multi – pack mode”

– Turbine Software found to be the problem

– Software has to be NY State Approved

– Delayed System Interconnection test three weeks

That Was the Only Real Problem!!

What’s the Bottom Line?What’s the Bottom Line?What’s the Bottom Line?What’s the Bottom Line?Reduced Energy Costs! Great PR!

Estimated Annual Avoided Energy Loads & Cost

Quantity % of Annual Baseline – Energy

Annual Cost Savings [$]*

Grid Electricity 54% $44,000

Refrigeration Compression 10% $10,000

Space Cooling Compression 70% $45,000

Desiccant Regeneration 50% $9,000

Space Heating 75% $21,000

Total $129,000

Gas = $0.69/therm & Grid Electric at $.13 kWh

*Maintenance costs not included

Things To Consider:Things To Consider:Things To Consider:Things To Consider: Local Utility Costs (Can you do it cheaper?)

Can You Use The Chilled Water?

Is High Pressure Gas Available?

Local Interconnection Regulations?

– State Law?

– Local Utility Control?

– What are The Requirements?

Can You Get It There? (Permit Issue)

Would We Do It Again?Would We Do It Again?Would We Do It Again?Would We Do It Again?

Yes!

For More Information:For More Information:For More Information:For More Information:

Jim Kirk

470 Chestnut Ridge Road

Woodcliff Lake, NJ 07677

(201) 571-4865

Jkirk@aptea.com

Tom Coulbourn

2300 Westmoreland Street

Richmond, VA 23230

(804) 678- 5307

www.utcpower.com