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DOE - Chiller System Optimization
Opportunities With Gas Engine-Driven Cooling Systems
TECOGEN Markets
Gas Cooling Market Is One of the Fastest Growing Segment in HVAC Industry
Rising Cost of Electric CoolingRefrigerant IssuesAvailable Incentives Increasing Acceptance of Gas Cooling
Chiller Decision Is No Longer an Automatic Choice for Electric
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
Peak Seasons for Gas and Electricity Sales
50
60
70
80
90
100
J F M A M J J A S O N D
Electricity Sales Natural Gas Sales
Cooling Season
% Of Peak
CONDENSERCONDENSERCONDENSERCONDENSER
EVAPORATOREVAPORATOREVAPORATOREVAPORATOR
EXPANSIONEXPANSIONVALVEVALVE
EXPANSIONEXPANSIONVALVEVALVECOMPRESSORCOMPRESSORCOMPRESSORCOMPRESSORELECTRICELECTRIC
MOTORMOTOR
ELECTRICELECTRICMOTORMOTOR
COOLINGCOOLINGCOILS INCOILS INBUILDINGBUILDING
COOLINGCOOLINGCOILS INCOILS INBUILDINGBUILDING
Hot Refrigerant VaporHot Refrigerant Vapor
Cold Refrigerant VaporCold Refrigerant Vapor
Warm Refrigerant LiquidWarm Refrigerant Liquid
Cold Refrigerant LiquidCold Refrigerant Liquid
Electric Chiller
CONDENSERCONDENSERCONDENSERCONDENSER
EVAPORATOREVAPORATOREVAPORATOREVAPORATOR
EXPANSIONEXPANSIONVALVEVALVE
EXPANSIONEXPANSIONVALVEVALVECOMPRESSORCOMPRESSORCOMPRESSORCOMPRESSORGASGAS
ENGINEENGINE
GASGASENGINEENGINE
COOLINGCOOLINGCOILS INCOILS INBUILDINGBUILDING
COOLINGCOOLINGCOILS INCOILS INBUILDINGBUILDING
Hot Refrigerant VaporHot Refrigerant Vapor
Cold Refrigerant VaporCold Refrigerant Vapor
Warm Refrigerant LiquidWarm Refrigerant Liquid
Cold Refrigerant LiquidCold Refrigerant Liquid
Natural Gas Engine Driven Chiller
Air-Cooled Water Chiller or Condensing Unit
TECOCHILL RT Series
Air-Cooled Water Chiller or Condensing Unit
TECOCHILL RT Series
Water Chiller
TECOCHILL DT Series
TECOCHILL CH-400x
TECOCHILL Hybrid Installation
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
Engine Driven Chillers Benefits
Heat Recovery CapabilityEnvironmentally Friendly
Non-CFC Refrigerant Reduced Global Warming Reduced Fossil Fuel Use Reduced CO2 Emissions
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
Understanding Your Electric Bill
80% Demand Ratchet
cost of ratchetcost of ratchet
80% 80% PeakPeak
PeakPeakDemandDemand
July 03July 03 AA SS OO NN DD JJ FF MM AA MM JJ July04July04
5050
00
Billed Demand Actual Demand
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
Chilled Water
Cooling TowerNatural Gas
Bulk Oil System
Exhaust
Heat RecoveryElectrical
Make-up Water
Engine Dump Heat Exchanger BranchDrains
Installation
Economic Analysis Is Critical In Chiller Decision-Making
Economic Analysis Is Critical In Chiller Decision-Making
25%25% 50%50% 75%75% Full LoadFull Load% Load% Load
00
500500
10001000
15001500
Hours PerHours PerYearYear
25%25% 50%50% 75%75% Full LoadFull Load
610610
14721472
12121212
155155
Typical Building Load Profile
2.02.0
2.52.5
3.03.0
% Full Load% Full Load
CO
PC
OP
0.00.0
0.50.5
1.01.0
1.51.5
00 2525 5050 7575 100100
TECOCHILL IPLV = 2.6TECOCHILL IPLV = 2.6
DF Absorber IPLV = 1.1DF Absorber IPLV = 1.1
Importance of Part Load Efficiency
Factors Affecting Chiller Economics
Equipment Operating Efficiency (IPLV)Gas and Electric Rates (Including Demand)Use of Heat RecoveryUtility RebatesEquipment and Installation CostsElectric Power Requirements
(Transformer, Switchgear)Standby Generator Requirements
Savings Example: (1) TECOCHILL CH-400xSavings 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 InformationOperating Information
TECOCHILL Gas Cooling Energy Cost Analysis Boston Area Project
TECOCHILL Gas Cooling Energy Cost Analysis - Boston Area Project
Electric Utility RatesElectric Utility Rates Natural Gas Utility RatesNatural Gas Utility Rates
Summer Demand:Summer Demand: $22.52/kW$22.52/kW Cooling Rate:Cooling Rate: $0.60/therm$0.60/thermWinter DemandWinter Demand $11.25/kW$11.25/kW Boiler Rate:Boiler Rate: $0.60/therm$0.60/thermEnergy Rate:Energy Rate: $.068/kWh $.068/kWh
Chiller EfficienciesChiller Efficiencies IPLVIPLV Full LoadFull Load
Electric:Electric: 0.62 kW/ton0.62 kW/ton 0.6 kW/ton0.6 kW/tonAbsorption:Absorption: 1.00 COP1.00 COP 1.00 COP1.00 COPTECOCHILL:TECOCHILL: 2.50 COP2.50 COP 1.60 COP1.60 COP
Electric ChillerElectric Chiller Absorption ChillerAbsorption Chiller TECOCHILLTECOCHILLwithout heatwithout heat
recoveryrecovery
TECOCHILL withTECOCHILL withheat recoveryheat recovery
$52,315$52,315 $55,230$55,230
$20,446$20,446
$8,926$8,926
Annual Energy Costs - Boston Area TECOCHILL vs. Other Chillers
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
Typical Gas Engine DrivenChiller Applications Hospitals Nursing Homes Colleges/Schools Hotels Industrial/Process Multi-Family Residential Department Stores Ice Rinks
U. S. Installations:TECOCHILL/TECOGEN/TecoFROST
TECOCHILL CH-50ACP
TECOCHILL CH-50ACP
TECOCHILL CH-50ACP
TECOCHILL CH-400x
TECOCHILL CH-400x
TECOCHILL CH-200x
The Future of Gas Engine-Driven Cooling is NOW!!!
