Christiania Building

ACEC Colorado 2003 Grand Conceptor Award

A SYSTEM FOR ALL SEASONS

Ketchum, Idaho

The Future of Heat Rejection

• Breakthrough snowmelt/condenser heat rejection system
• Worldwide snow country application
• Significant energy savings by optimizing standard equipment
• Sustainable year-round use of snowmelt system for heat rejection
• Redefined geothermal heat rejection use and application

System Innovation

• Unique integration of snowmelt and geothermal heat pump systems
• First dual use snowmelt/heat pump heat rejection system
• Snowmelt system provides summer cooling system heat rejection
• Eliminated deep excavation time and cost for geothermal loop system on landlocked site
• Building waste heat augmented snowmelt system

Complexity

• Strategic use of climatic conditions (40°F temperature swings) with heat rejection system
• Augmented snowmelt heat rejection system with reduced size cooling tower
• Digital control system to optimize operation
• Uses low cost pump energy in lieu of more costly (up to six times) cooling tower fan energy
• Cooling tower serves as garage exhaust and eliminates garage exhaust fan

Safety & Savings for Public & Environment

• Reclaimed building waste heat making snowmelt system earth-friendly
• Reduced fossil fuel consumption by utilizing waste heat
• Reduced cooling tower run time and noise pollution by 90%
• Reduced electrical cost in summer
• Reduced gas and electrical cost in winter
• Increased snowmelt areas thus improving public safety

Owner Return

• Reduced installation costs (7%) by eliminating snowmelt boiler and garage exhaust fan
• Reduced system spatial needs resulting in building costs savings
• Reduced condenser operating costs by up to 85%
• Eliminated snow maintenance and storage

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