2. Chilled Beam Presentation

3. Advantages of Chilled Beam vs VAV Sample Project Photos
Chilled Beam Presentation
Cooling Load Profile
Chilled Beam Systems
Advantages of Chilled Beam vs VAV
Sample Project Photos
Summary & Questions

4. Cooling Load Profile

5. Sensible Heat
Heat which is measured by a thermometer.
No Moisture added to the space.
Latent Heat
Heat which is measured by a humidistat.
Moisture added to the space.

6. Sensible Heat

7. Sensible Heat

8. Latent Heat
Sensible Heat

9. 70% Sensible Heat and 30% Latent Heat
Air Infiltration
Sensible Heat And
Latent Heat
Sensible Heat
Latent Heat
Sensible Heat
Sensible Heat

10. Cooling Load Profile

11. Water = Efficient Transport
10”
1 Ton of Sensible Cooling
(12,000 BTU/HR)
Requires 550 CFM of Air or
2.4 GPM of water
12”
¾” diameter
water pipe

12. Air Horse Power vs Water Horse Power

13. Chilled Ceilings (Radiant Chilled Ceilings)
Three Types of Chilled Beam Systems
Chilled Ceilings (Radiant Chilled Ceilings)
Passive Chilled Beams
Active Chilled Beams

14. Chilled Ceilings

15. Chilled Ceilings Radiant Effect
76°F Dry Bulb
74°F radiant
temperature (dry bulb)

16. Passive Chilled Beams

17. Passive Chilled Beams Operation Principle
Soffit
Suspension rod
Water coil
Fabric skirt
Perforated tile

18. Passive Chilled Beams Airflow Pattern

19. Active Chilled Beams

20. Active Chilled Beam Operation Principle
Primary Air From
Energy Recovery Unit
Primary air nozzles
Primary air plenum
55 Deg F to 65 Deg F
100 CFM
Induction air flow
Suspended ceiling
200 CFM
200 CFM
Heat exchanger
Water Temp 52 Deg F
2 Deg F Above Dew Point Temp
72 Deg F
300 CFM

21. Active Chilled Beam Airflow Pattern

22. Active Chilled Beams Benefits
Very high cooling capacity
Up to 100 BTUH/FT2 floor space
Up to 2000 BTUH per LF
Integrated cooling, ventilation and heating
All services in the ceiling cavity
Suitable for integration into all ceiling types
Reduces ceiling costs compared to Passive Beams

23. Active Chilled Beams Benefits (Continued)
Significant space savings
Smaller ductwork saves space in shafts, mechanical rooms and ceilings
Can be installed tight up against the slab
Reduced floor to floor heights
Reduced construction costs on new buildings
Low noise levels
Low maintenance
No moving or consumable parts

24. Energy Savings* Compared to VAV
*Table Data Provided by Dadanco

25. (Minimum 40 points needed for certification out of 100 maximum)
LEED Certification LEED NC V3.0
Optimize Energy Performance - up to 48% (new) or 44% (existing) more efficient than ASHRAE 90.1 (EA Credit 1) - up to 19 points
Increased Ventilation - 30% more outdoor air than ASHRAE 62 (IEQ Credit 2) - 1 point
Controllability of Systems - individual temperature control (IEQ Credit 6.2) point
Thermal Comfort - meet ASHRAE 55 (IEQ Credit 7.1) point
(Minimum 40 points needed for certification out of 100 maximum)

26. Passive Chilled Beams Variants
Recessed Passive Beams
Exposed Passive Beams

27. Active Chilled Beams

28. Active Chilled Beams

29. Active Chilled Beam Design Considerations

30. Building Suitability
Building Characteristics that favor Active Chilled Beams
Zones with moderate-high sensible load densities
Where primary airflows would be significantly higher than needed for ventilation
Buildings most affected by space constraints
Hi – rises, existing buildings with induction systems
Zones where the acoustical environment is a key design criterion
Laboratories where sensible loads are driving airflows as opposed to air change rates
Buildings seeking LEED or Green Globes certification

31. Building Suitability
Characteristics that less favor Active Chilled Beams
Buildings with operable windows or “leaky” construction
Beams with drain pans could be considered
Zones with relatively low sensible load densities
Zones with relatively low sensible heat ratios and low ventilation air requirements
Zones with high filtration requirements for the re-circulated room air
Zone with high latent loads

32. Construction Costs Reduced height
Floor heights reduced 10”-14”
Overall height reduced by 6’

33. HVAC Advantages Savings Compared to VAV
Smaller AHU’s
Smaller Ductwork
Less Noise
Low Maintenance
Lower Electrical Infrastructure Cost
Less Fan HP
Lower Operating Cost

39. STORIES FROM THE AUDIENCE?
Questions?