hotels: water and energy - constant...
TRANSCRIPT
Hotels: Water and Energy
Agenda
Introduction01
Company Overview02
Hotel Energy & Water Use03
05
06
07
04 Design Philosophy
Hotel Project Examples
Hotel Energy Conservation
Hotel System Options
Introduction to Vanderweil
� Mechanical� Electrical� Plumbing� Fire Protection� Power & Utilities� Transmission &
Distribution� Substation� Sustainability� LEED® Services� Energy Modeling� Commissioning
New York, NYNew York, NYNew York, NYNew York, NY
Boston, MABoston, MABoston, MABoston, MA
Alexandria, VAAlexandria, VAAlexandria, VAAlexandria, VA
Princeton, NJPrinceton, NJPrinceton, NJPrinceton, NJ
Los Angeles, Los Angeles, Los Angeles, Los Angeles, CACACACA
Atlanta, GAAtlanta, GAAtlanta, GAAtlanta, GAPhoenix, AZPhoenix, AZPhoenix, AZPhoenix, AZ
Orlando, FLOrlando, FLOrlando, FLOrlando, FL
Miami, FLMiami, FLMiami, FLMiami, FL
Philadelphia, PAPhiladelphia, PAPhiladelphia, PAPhiladelphia, PA
Markets We Serve
Envoy Hotel, Boston, MA
Government
Institutional
Academic
Commercial
Cultural
Hospitality & Entertainment
Healthcare
Industrial
Power & Utilities
Science & Technology
Sports, Venue and Event
Transmission & Distribution
Marina Bay Sands Hotel & Casino
Where to start? Where to go next?
Reduce the Energy and Water Demand (load)
Serve the loads efficiently
Recover energy & water
Renewable
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Jun
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No
v
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BT
U/f
t2
South Solar Gain
05000
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1 2 3 4 5 6 7 8 9 10 11 12BT
U/f
t2
East Solar Gain
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U/f
t2
West Solar Gain
Consider the load: climate, massing, and orientation
What’s wrapped up in the envelope?
15-20% of the energy!
Envelope performance
reflects glazing properties
and insulation levels
typically found in buildings
during the 1970s
ENERGY– where does it go?
What’s going down the drain?
Guestroom Mechanical System Options
• PTAC / VTAC
• Variable Refrigerant Flow (VRF)
• Heat Pumps
• 2-pipe FCU / Electric Heat
• 4-pipe chilled water / hot water
Ventilation Options
• Fixed Ventilation / Code Minimum
• Increased Ventilation: LEED, WELL
• Variable/Demand Controlled Ventilation
Ventilation Options
• Energy Recovery
o Fixed Plates
o Run-around Loops
o High Pressure Glycol
o Energy Wheels
Hotel Energy Conservation Measures:Tier 1
o LED lighting upgrades
o Low flow plumbing fixtures
o Constant airflow regulators / code OA level
o Base room control system / HVAC occupancy based
o Commissioning
Energy Conservation Measures:Tier 1I
o Increased room controls – lighting, plug control
o High efficiency chiller / boiler replacements
o Variable speed drives – pumps, kitchen hoods, fans
o Envelope upgrades
o Demand ventilation control
o Room HVAC upgrades – 2-pipe to 4-pipe
o Full room controls – w/ plug load controls, blind
control, door interface, front desk interface
Energy Conservation Measures:Tier III
o Building Automation System
o Heat recovery
o Heat recovery chiller
o Fuel Cells, Combined Heat and Power
o Renewables
Energy Conservation Measures:Energy Conservation Measures:Energy Conservation Measures:Energy Conservation Measures:Tier IIITier IIITier IIITier III
Hotel Renovation Projects
• Courtyard by Marriott Tremont
• Lighting upgrades
• Plumbing fixture upgrades
• Hilton Hotel Boston
• Multiple bay suites converted to individual
guestrooms
• Lighting
• Plumbing
• Outdoor air upgrades
Making the Case: Energy + Deferred Issues
• Mold and mildew = Poor Air Quality• Leaking pipes = Excess Water, Excess Energy • Malfunctioning Equipment = Excess Energy
“Smart” keycard to enable guest room lighting
Pathway to Reduction
Energy
Conservation
Measures
Glazing replacement
Low flow domestic hot water fixtures
Increased insulation in wall/roof assemblies
Dedicated outdoor air system with energy
recovery
Advanced lighting systems
Decoupled ventilation & space conditioning
systems
Energy Conservation Measure Analysis
0.8%1.4% 1.9% 1.6%
2.4%
0.3% 0.8% 1.0% 1.2%
3.4%3.0%
-0.1
0%
2%
4%
6%
8%
10%
12%
14%
16%
18%
20%
Improve
Envelope
by 20%
Improve
Glazing by
20%
Reduce
Glazing to
40%
Reduce
Lighting
by 20%
Reduce
Lighting
by 30%
Reduce
Kitched
Load
Reduce
SP by 25%
DOAS
with FCUs
ilo VAV
Air
Cascade
Air
Cascade
w/ DOAS
+ FCUs
Solar
Thermal
DHW
Remove
East
Canopy
EN
ER
GY
CO
ST
SA
VIN
GS
(%
)
Hotel ECMs: Update Controls
Before and After: Energy Upgrades
Reflects inclusion of all
energy conservation
measures
Before and… AFTER
• LED lighting
• Low flow plumbing fixtures
• Low-e glass upgrade
• Complete MEP demolition and
replacement
• New fan coil units
• Room control systems
Measurement: The Final Frontier
$0.00
$2,000.00
$4,000.00
$6,000.00
$8,000.00
$10,000.00
0
5,000
10,000
15,000
20,000
25,000
8/23/2012 8/23/2013 8/23/2014
En
erg
y U
se (
BT
U)
Axis Title
Energy Usage: 2012-2015
Usage (Therms) Usage (Cost)
0
200000
400000
600000
800000
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-Oct
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Annual Electrical Usage
Peak Off Peak
Thank you! Questions?
Presented by:
Julia Rogers, LEED AP BD+C
Sustainable Design Practice Leader
617-556-9388
Paul Van Kauwenberg, PE, LEED AP BD+C
Associate Principal
617-556-9391