Chilled Beam Presentation Cooling Load Profile Chilled Beam Systems Advantages of Chilled Beam vs VAV Sample Project Photos Summary amp Questions Cooling Load Profile Sensible Heat Heat which is measured by a thermometer ID: 238033
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Slide1Slide2
Chilled Beam PresentationSlide3
Chilled Beam Presentation
Cooling Load Profile
Chilled Beam Systems
Advantages of Chilled Beam vs VAV
Sample Project Photos
Summary & QuestionsSlide4
Cooling Load ProfileSlide5
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.Slide6
Sensible HeatSlide7
Sensible HeatSlide8
Latent Heat
Sensible HeatSlide9
Latent Heat
Sensible Heat
Sensible Heat
Sensible Heat
Sensible Heat
Latent Heat
Air Infiltration
Sensible Heat And
Latent Heat
70% Sensible Heat and 30% Latent HeatSlide10
Cooling Load ProfileSlide11
Water = Efficient Transport
¾” diameter
water pipe
1 Ton of
Sensible Cooling
(12,000 BTU/HR)
R
equires
550 CFM of
Air
or
2.4
GPM of water
10”
12”Slide12
Air Horse Power
vs
Water Horse PowerSlide13
Three Types of Chilled Beam Systems
Chilled Ceilings (Radiant Chilled Ceilings)
Passive Chilled Beams
Active Chilled BeamsSlide14
Chilled CeilingsSlide15
Chilled Ceilings Radiant Effect
76°F Dry Bulb
74°F radiant
temperature
(dry
bulb)Slide16
Passive Chilled BeamsSlide17
Passive Chilled Beams
Operation Principle
Perforated tile
Water coil
Suspension rod
Soffit
Fabric skirtSlide18
Passive Chilled Beams
Airflow PatternSlide19
Active Chilled BeamsSlide20
Active Chilled Beam
Operation Principle
Suspended ceiling
Primary air plenum
Primary air nozzles
Heat exchanger
Induction air flow
Primary
Air From
Energy Recovery Unit
55 Deg F to 65 Deg F
72 Deg F
100 CFM
300 CFM
200 CFM
200 CFM
Water Temp 52 Deg F
2 Deg F Above Dew Point TempSlide21
Active Chilled Beam
Airflow PatternSlide22
Active Chilled Beams
Benefits
Very high cooling capacity
Up to 100 BTUH/FT
2
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 BeamsSlide23
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 partsSlide24
Energy Savings*
Compared to VAV
*Table Data Provided by DadancoSlide25
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) -
1 point
Thermal Comfort
- meet ASHRAE 55
(IEQ Credit 7.1) -
1 point
(Minimum 40 points needed for certification
out of 100 maximum)Slide26
Passive Chilled Beams
Variants
Recessed Passive Beams
Exposed Passive BeamsSlide27
Active Chilled BeamsSlide28
Active Chilled BeamsSlide29
Active Chilled Beam Design ConsiderationsSlide30
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 certificationSlide31
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
Building SuitabilitySlide32
Floor heights reduced 10”-14”
Overall height reduced by 6
’
Construction Costs
Reduced heightSlide33
HVAC Advantages
Savings Compared to VAV
Smaller AHU’s
Smaller
D
uctwork
Less Noise
Low Maintenance
Lower Electrical
I
nfrastructure
C
ost
Less Fan HP
Lower Operating CostSlide34Slide35Slide36Slide37Slide38Slide39
Questions?
STORIES FROM THE AUDIENCE?