Post on 28-Feb-2021
Chilled Beams in Healthcare
DOUGLAS FICK, PE, PMP
Senior Director
Illinois ASHRAE YEA Conference March 25, 2014
Objectives
• Understand the basics of chilled beams• ASHRAE Standards• Review the design choices• Discuss their performance after construction
2014 ASHRAE YEA Conference
History
• The new technology and application of chilled beams
2014 ASHRAE YEA Conference
History
• The new technology and application of chilled beams
2014 ASHRAE YEA Conference
History
• The new technology and application of chilled beams
2014 ASHRAE YEA Conference
Outline
• Passive Chilled Beams– Chilled Ceilings– Chilled Sails– Passive Beams
• Active Chilled Beams
2014 ASHRAE YEA Conference
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
Chilled Ceilings
2014 ASHRAE YEA Conference
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
Chilled Sails
2014 ASHRAE YEA Conference
Chilled Sails
• Advantages– Good thermal comfort– Low ceiling requirements– Low Noise
• Disadvantages– Lower Output– No heating capabilities
2014 ASHRAE YEA Conference
Chilled Sails
• Advantages– Good thermal comfort– Low ceiling requirements– Low Noise
• Disadvantages– Lower Output– No heating capabilities
2014 ASHRAE YEA Conference
Chilled Beams
2014 ASHRAE YEA Conference
Perforated tile
Water coil
Suspension rod
Soffit
Fabric skirt
Passive Beams
2014 ASHRAE YEA Conference
Passive Beams
2014 ASHRAE YEA Conference
• Advantages– Good thermal comfort– Low Noise
• Disadvantages– Lower Output– No heating capabilities– High free area ceilings
Active Chilled Beams
• Active Chilled Beam Basics
2014 ASHRAE YEA Conference
Active Chilled Beams
2014 ASHRAE YEA Conference
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
Regulatory
• ASHRAE Standard 170– TPS– Air Changes Per Hour
• Total• Outdoor Air
– Recirculation– Supplemental Heat Reduction
2014 ASHRAE YEA Conference
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
Active Chilled Beams
2014 ASHRAE YEA Conference
Application
2014 ASHRAE YEA Conference
Technology
2014 ASHRAE YEA Conference
Technology
2014 ASHRAE YEA Conference
Technology
2014 ASHRAE YEA Conference
Technology
2014 ASHRAE YEA Conference
Technology
2014 ASHRAE YEA Conference
Technology
2014 ASHRAE YEA Conference
Technology
2014 ASHRAE YEA Conference
Application
2014 ASHRAE YEA Conference
Application
• Two Pipe or Four Pipe– Part Load Performance
2014 ASHRAE YEA Conference
Application
• Two Pipe or Four Pipe– Part Load Performance– Patient Comfort
2014 ASHRAE YEA Conference
Application
• Two Pipe or Four Pipe– Part Load Performance– Patient Comfort– Airflow
2014 ASHRAE YEA Conference
Application
• Two Pipe or Four Pipe– Part Load Performance– Patient Comfort– Airflow– Control Strategy
2014 ASHRAE YEA Conference
Application
• Condensation Management– Dry Coils– Condensation Sensors– Drain Pans
2014 ASHRAE YEA Conference
Application
• Control Accessibility
2014 ASHRAE YEA Conference
Application
• Dust, Dirt, Lint . . . .– Dry Coils
• Filters– Room filtration
2014 ASHRAE YEA Conference
Application
• Noise– Induction Units– Careful Selection
2014 ASHRAE YEA Conference
Application
• Energy– Year Round Chilled Water– Lower Chilled Water Temperatures– Commissioning
2014 ASHRAE YEA Conference
Application
• Cost– Chilled Beams– Terminal Box– Contractor Familiarity/ Comfort
2014 ASHRAE YEA Conference
Summary
2014 ASHRAE YEA Conference
Questions
2014 ASHRAE YEA Conference