Download - June – 6 th – 2012
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June – 6th – 2012
Mt. Angel Abbey LibraryHVAC
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Team “M.A.C.H.V.A.C.”Design Team
Ras Wickramaratne Santiago Rodriguez
John Slate Ghassan Mustafa
Ali Alsahaf
Support Team
Client: Victoria ErteltPSU Advisor: Dr. David SailorDesign Advisor: Evan Waymire
Industry Advisor: Ruwan Jayaweera
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Background Designed by modernist Finnish
architect Alvar Aalto
Completed in 1970
46,000 sq ft., three-story
Collection of over 5000 rare books and antiquities
Under-performing HVAC system
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Mission Statement Model an efficient HVAC system for the Mt
Angel Library
Maintain a desired temperature and humidity for thermal comfort
Ensure the safe storage of the valuable collection of books in the library
Utilize computer-aided simulations
Calibrate the model using onsite measurements
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Project PlanBrainstorm & Research
Data collection
Model Design
Calculate Heating and Cooling Loads
Model RefinementComponent selection
Recommendations
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Model Peak Loads
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Model Validation
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Component SelectionAir-cooled Chiller
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Component SelectionAir-cooled Chiller
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Central Cooling Coil (finned tube)
Component Selection
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Central Cooling Coil (finned tube)
Component Selection
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Zone Control Dampers Variable Frequency Drive
Component Selection
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Zone Control Dampers Variable Frequency Drive
Component Selection
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DDC (digital controls)
Component Selection
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EUI=144 kBtu/ft2
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Recommendations
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Recommendations
COMPLETE NEW SYSTEM:• 120 TON CHILLER • CENTRAL COILING COIL• ZONE CONTROL DAMPERS• SUPPLY/ RETURN FAN VFD• DDC CONTROLS• ECONOMIZER REPAIR
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COMPLETE NEW SYSTEM:• 120 TON CHILLER • CENTRAL COOLING COIL• ZONE CONTROL DAMPERS• SUPPLY/ RETURN FAN VFD• DDC CONTROLS• ECONOMIZER REPAIR
PHASE ISYSTEM REPAIR:• ECONOMIZER• PNEUMATIC CONTROLS• BALANCE MANUAL DAMPERS• ADD INSULATION
PHASE IIHYBRID DDC CONTROLS:• NEW DIGITAL HEADEND• EPT SWITCHES ON
ACTUATORS• UTILIZE PNEUMATIC POWER
PHASE III• 120 TON CHILLER• CENTRAL COOLING COIL• ZONE CONTROL
DAMPERS• SUPPLY/ RETURN FAN
VFD
PHASE IVFULL DDC CONTROLS:• REMOVE PNEUMATIC SYSTEM• INSTALL ELECTRONIC ACTUATORS• DCV CO2 SENSORS• HUMIDISTATS IN WORST ZONES
Recommendations
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RecommendationsItem Details Cost ($) Min.($) Max.($)
Air-Cooled Chiller Includes Pump 84,000.00 144,000.00 180,000.00Central Cooling Coil (Max 550 ft/min @ 11fpi) 18,000.00Zone Contol Damper w/ Actuator Blade -Type 7,200.00Zone Contol Thermostat 6,400.00Coil Control Includes Controller and Temp. Sensors(Ret,Sup,O.A.) 10,000.00Economizer Dampers w/ Actuators Blade-Type 6,000.00Heat Control Valve/ Actuator Per Zone Cost + Steam Converter 2,550.00DCV (CO2 Sensor) Per Zone Cost 3,200.00VFD Includes Motor and Drive (Return & Supply Fans) 20,000.00Dehumidification Includes Humidistat & Control ( For 4-5 Worst Zones) 2,000.00
159,350.00
COOLING SYSTEM: 120 TONS OF COOLING, NEW ECONOMIZER, VARIABLE AIR VOLUME AND DDC CONTROLS
Installation Cost
Max($)339,350.00
Min($)303,350.00Total Project Cost
Total Equipment Cost
Equipment
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Recommendations
Total Electric Gas Total(kW-hr) ($) (therm) ($) ($) ($) ($) ($) ($) ($) (years)
VFD & Zone Damper Control
84120 7,024.02 8.73 3.49 7,027.51 21,030.00 8.73 21,038.73 60,000.00 38,961.27 5.5
DDC 80994 6,763.00 9.80 3.92 6,766.92 20,248.50 9.80 20,258.30 60,000.00 39,741.70 5.9
Economizer Repair 46310 3,866.89 0.19 0.08 3,866.96 11,577.50 0.19 11,577.69 25,000.00 13,422.31 3.5
Simple Payback
Energy SavingsDesign Option
Design Option Installed Cost
Cost (Less Incentive)
ETO IncentiveElectric Gas
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Conclusion
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Questions Ali Alsahaf
Ras WickramaratneSantiago Rodriguez
John SlateGhassan Mustafa