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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
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