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Chilled Beams in Healthcare
DOUGLAS FICK, PE, PMP
Senior Director
Illinois ASHRAE YEA Conference March 25, 2014
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Objectives
• Understand the basics of chilled beams• ASHRAE Standards• Review the design choices• Discuss their performance after construction
2014 ASHRAE YEA Conference
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History
• The new technology and application of chilled beams
2014 ASHRAE YEA Conference
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History
• The new technology and application of chilled beams
2014 ASHRAE YEA Conference
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History
• The new technology and application of chilled beams
2014 ASHRAE YEA Conference
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Outline
• Passive Chilled Beams– Chilled Ceilings– Chilled Sails– Passive Beams
• Active Chilled Beams
2014 ASHRAE YEA Conference
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Definition
• A chilled beam is a sensible only cooling device that uses chilled water above the room dew point to remove heat from the space
2014 ASHRAE YEA Conference
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Chilled Ceilings
2014 ASHRAE YEA Conference
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Chilled Ceilings
• Advantages– Excellent thermal comfort– Heating capabilities– Low ceiling requirements– Low Noise
• Disadvantages– Low Output, significant surface area– Significant piping connections
2014 ASHRAE YEA Conference
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Chilled Sails
2014 ASHRAE YEA Conference
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Chilled Sails
• Advantages– Good thermal comfort– Low ceiling requirements– Low Noise
• Disadvantages– Lower Output– No heating capabilities
2014 ASHRAE YEA Conference
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Chilled Sails
• Advantages– Good thermal comfort– Low ceiling requirements– Low Noise
• Disadvantages– Lower Output– No heating capabilities
2014 ASHRAE YEA Conference
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Chilled Beams
2014 ASHRAE YEA Conference
Perforated tile
Water coil
Suspension rod
Soffit
Fabric skirt
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Passive Beams
2014 ASHRAE YEA Conference
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Passive Beams
2014 ASHRAE YEA Conference
• Advantages– Good thermal comfort– Low Noise
• Disadvantages– Lower Output– No heating capabilities– High free area ceilings
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Active Chilled Beams
• Active Chilled Beam Basics
2014 ASHRAE YEA Conference
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Active Chilled Beams
2014 ASHRAE YEA Conference
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Active Chilled Beams
2014 ASHRAE YEA Conference
• Advantages– Excellent thermal comfort– Lower pressure than induction– Low Maintenance– Integration of Ventilation
• Disadvantages– Noise– Over ventilation potential
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Regulatory
• ASHRAE Standard 170– TPS– Air Changes Per Hour
• Total• Outdoor Air
– Recirculation– Supplemental Heat Reduction
2014 ASHRAE YEA Conference
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Regulatory
• ASHRAE Standard 200P– Title– Purpose: To define laboratory methods of testing chilled beams
to determine performance– Scope: This standard specifies test instrumentation, facilities,
installation methods and procedures for determining the performance of Chilled beams
– Completed Public Review– Resolving Comments
• Additional Public Review ?• Publish ?
2014 ASHRAE YEA Conference
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Active Chilled Beams
2014 ASHRAE YEA Conference
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Application
2014 ASHRAE YEA Conference
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Technology
2014 ASHRAE YEA Conference
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Technology
2014 ASHRAE YEA Conference
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Technology
2014 ASHRAE YEA Conference
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Technology
2014 ASHRAE YEA Conference
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Technology
2014 ASHRAE YEA Conference
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Technology
2014 ASHRAE YEA Conference
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Technology
2014 ASHRAE YEA Conference
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Application
2014 ASHRAE YEA Conference
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Application
• Two Pipe or Four Pipe– Part Load Performance
2014 ASHRAE YEA Conference
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Application
• Two Pipe or Four Pipe– Part Load Performance– Patient Comfort
2014 ASHRAE YEA Conference
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Application
• Two Pipe or Four Pipe– Part Load Performance– Patient Comfort– Airflow
2014 ASHRAE YEA Conference
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Application
• Two Pipe or Four Pipe– Part Load Performance– Patient Comfort– Airflow– Control Strategy
2014 ASHRAE YEA Conference
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Application
• Condensation Management– Dry Coils– Condensation Sensors– Drain Pans
2014 ASHRAE YEA Conference
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Application
• Control Accessibility
2014 ASHRAE YEA Conference
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Application
• Dust, Dirt, Lint . . . .– Dry Coils
• Filters– Room filtration
2014 ASHRAE YEA Conference
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Application
• Noise– Induction Units– Careful Selection
2014 ASHRAE YEA Conference
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Application
• Energy– Year Round Chilled Water– Lower Chilled Water Temperatures– Commissioning
2014 ASHRAE YEA Conference
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Application
• Cost– Chilled Beams– Terminal Box– Contractor Familiarity/ Comfort
2014 ASHRAE YEA Conference
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Summary
2014 ASHRAE YEA Conference
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Questions
2014 ASHRAE YEA Conference