June – 6th – 2012

Mt. Angel Abbey LibraryHVAC

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

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

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

Project PlanBrainstorm & Research

Data collection

Model Design

Calculate Heating and Cooling Loads

Model RefinementComponent selection

Recommendations

Model Peak Loads

Model Validation

Component SelectionAir-cooled Chiller

Component SelectionAir-cooled Chiller

Central Cooling Coil (finned tube)

Component Selection

Central Cooling Coil (finned tube)

Component Selection

Zone Control Dampers Variable Frequency Drive

Component Selection

Zone Control Dampers Variable Frequency Drive

Component Selection

DDC (digital controls)

Component Selection

EUI=144 kBtu/ft2

Recommendations

Recommendations

COMPLETE NEW SYSTEM:• 120 TON CHILLER • CENTRAL COILING COIL• ZONE CONTROL DAMPERS• SUPPLY/ RETURN FAN VFD• DDC CONTROLS• ECONOMIZER REPAIR

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

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

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

Conclusion

Questions Ali Alsahaf

Ras WickramaratneSantiago Rodriguez

John SlateGhassan Mustafa