DOE Chiller System Optimization

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DOE - Chiller System Optimization
Opportunities With Gas Engine-Driven Cooling
Systems

• September 16 - 18, 2003
• JEFFREY GLICK
• Regional Sales Manager
• Tecogen

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TECOGEN Markets

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Gas Cooling Market Is One of the Fastest Growing
Segment in HVAC Industry

• Rising Cost of Electric Cooling
• Refrigerant Issues
• Available Incentives
• Increasing Acceptance of Gas Cooling
• Chiller Decision Is No Longer an Automatic Choice
  for Electric

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Avoid Costly Electric Service Capacity Upgrades

• National Average Cost for Adding Electric
  Capacity 1,000 - 1,300/kW
• Boston Area Average Cost - 1,500/kW

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Market Drivers - Strongest in Company History

• Unprecedented Attention to Energy
• Front Page National Press
• National Priority
• Efficiency
• No Longer About Being a Good Citizen...
• Its About Staying in Business

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Peak Seasons for Gas and Electricity Sales
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Electric Chiller
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Natural Gas Engine Driven Chiller
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TECOCHILL RT Series
Air-Cooled Water Chiller or Condensing Unit
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TECOCHILL RT Series
Air-Cooled Water Chiller or Condensing Unit
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TECOCHILL DT Series
Water Chiller
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TECOCHILL CH-400x
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TECOCHILL Hybrid Installation
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Engine Driven Chillers

• Benefits
• Lowest Operating Cost/Lowest Life Cycle Cost
• Most Efficient Technology Available
• High-Efficiency Screw Compressor
• Variable Speed Engine Drive
• Very High Part Load Efficiency
• Continuous Load-Following Capability

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Engine Driven Chillers Benefits

• Heat Recovery Capability
• Environmentally Friendly
• Non-CFC Refrigerant
• Reduced Global Warming
• Reduced Fossil Fuel Use
• Reduced CO2 Emissions

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Engine Driven Chillers

• Engine Driven vs. Electric
• Significantly Lower Operating Costs
• Peak Electric Demand Reduction
• Heat Recovery Capability
• Superior Part Load Efficiency
• Stand-by Generator Size Reduction
• Back-up Cooling During Power Outages
• Avoid Electric Service Capacity Upgrades

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Understanding Your Electric Bill

• 80 Demand Ratchet

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Engine Driven Chillers

• Engine Driven vs. Absorption
• Lower Operating Costs
• High COP Much Higher at Part Load
• Low Parasitics
• Easy Retrofits
• Smaller Footprint
• Can Use Existing Tower, Pumps, Piping
• Familiar Vapor Compression Technology
• Low Temperature Capability

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Installation
Exhaust
Chilled Water
Electrical
Heat Recovery
Natural Gas
Cooling Tower
Bulk Oil System
Make-up Water
Engine Dump Heat Exchanger Branch
Drains
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DT Field Disassembly
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Economic Analysis Is Critical In Chiller
Decision-Making
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Typical Building Load Profile
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Importance of Part Load Efficiency
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Factors Affecting Chiller Economics

• Equipment Operating Efficiency (IPLV)
• Gas and Electric Rates (Including Demand)
• Use of Heat Recovery
• Utility Rebates
• Equipment and Installation Costs
• Electric Power Requirements(Transformer,
  Switchgear)
• Standby Generator Requirements

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TECOCHILL Gas Cooling Energy Cost Analysis
Boston Area Project

• Savings Example (1) TECOCHILL CH-400x
• Peak Load 400 tons
• Annual Hours of Operation 3,000 hours/yr
• Equivalent Full Load Hours (EFLH) 1,500 hours/yr
• Cooling Season Length 6 months/yr

Operating Information
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TECOCHILL Gas Cooling Energy Cost Analysis -
Boston Area Project
Electric Utility Rates Natural Gas Utility
Rates Summer Demand 22.52/kW Cooling
Rate 0.60/thermWinter Demand 11.25/kW Boiler
Rate 0.60/thermEnergy Rate .068/kWh
Chiller Efficiencies IPLV Full
LoadElectric 0.62 kW/ton 0.6 kW/tonAbsorption
1.00 COP 1.00 COPTECOCHILL 2.50 COP 1.60 COP
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Annual Energy Costs - Boston Area

• TECOCHILL vs. Other Chillers

52,315
55,230
20,446
8,926
Electric Chiller
Absorption Chiller
TECOCHILL
TECOCHILL with
without heat
heat recovery
recovery
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Characteristics of Good Gas Engine Chiller
Applications

• Owner-Occupied
• High Electric Demand Rates
• Insufficient Electric Power
• Cooling Necessary During Power Outages
• Hot Water Needed
• Process Applications
• Eligible for Utility Rebates

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Typical Gas Engine DrivenChiller Applications

• Hospitals
• Nursing Homes
• Colleges/Schools
• Hotels
• Industrial/Process
• Multi-Family Residential
• Department Stores
• Ice Rinks

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U. S. InstallationsTECOCHILL/TECOGEN/TecoFROST
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TECOCHILL CH-50ACP
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TECOCHILL CH-50ACP
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TECOCHILL CH-50ACP
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TECOCHILL CH-400x
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TECOCHILL CH-400x
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TECOCHILL CH-400x
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TECOCHILL CH-200x
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The Future of Gas Engine-Driven Cooling is NOW!!!
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