Outreach Innovation Building

1
Outreach Innovation Building

• Kyle Pepperman
• The Pennsylvania State University
• Architectural Engineering Senior Thesis
• Spring 2005

2
Presentation Outline

• Project Background
• Project Team
• Existing Conditions
• Redesign Goals
• Mechanical Redesign
• Electrical Analysis
• Fire Protection Analysis
• Conclusions
• Acknowledgements
• Questions

South-East View
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Project Background

• 97,000 gross square feet
• 27 Million total project cost
• Home to Penn State Public Broadcasting and World
  Campus (WPSX-TV and WPSU-FM)
• Building Features 1 main and several smaller
  television production studios, radio facilities,
  World Campus resource library, and offices.

4
Project Team

• Owner Penn State Research Park Developers Inc.
• Architect GBQC Architects, PC
• Construction Manager Poole Anderson Construction
  LLC.
• Studio Design Consultant The Lawrence Group
  Architects
• Struct., MEP, Fire Prot. Eng Associated
  Engineering Consultants
• Acoustic Consultant Shen Milsom Wilke, Inc.
• Telecomm. Design Consult. PSU Office of
  Telecommunications
• Audiovisual Equip. Consult. PSU Office of Media
  Technology
• Civil Engineer Gannett-Fleming, Inc.

5
Existing Conditions

• Building Envelope
• 3-story
• Brick Façade and aluminum panels to match
  surrounding buildings
• Large curtain windows on east and south side of
  building

South-East View
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Existing Conditions

• Lighting/Electrical
• Radial System with 15kV service cable into a
  12.47kV-480Y/277V transformer
• 2400A, 3-phase, 4-wire main switchboard
• 100kVA emergency generator
• UPS for loads that require uninterruptible power
• Fire Protection
• Wet-pipe automatic system
• Dry-pipe system within server and video archive
  area

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Existing Conditions

• Mechanical
• Design Conditions
• Summer 89F DB, 72F WB
• Winter 5FDB
• 6-Air Handling Units
• Cooling coils range from 24.2 to 81.2 tons
• 10,000 to 35,000 cfm
• Perimeter 2-Pipe Fan Coil Units
• 2-175 ton rooftop chillers and 1-54 ton chiller
• UFAD and Ducted Systems

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Redesign Goals

• Reduce Energy Use
• Save money
• Proper Indoor Air Quality

South View
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Mechanical Redesign

• Dedicated Outdoor Air System Overview
• Independent unit to supply minimum OA for
  ventilation
• Parallel system to meet remaining load
• DOAS Benefits
• Exact ventilation
• Reduced OA loads
• Lower Operating Cost

South-West View
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Mechanical Redesign

• New Mechanical System
• Single chilled water AHU for ventilation
• 11,500 cfm 77 tons cooling
• 2-Pipe Fan Coil Units as parallel system
• Some equipped with electrical heat for transition
  between seasons
• Original AHU that supplies Server room to remain

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Mechanical Redesign

• Enthalpy Wheel with DOAS
• Reduced cooling coil load
• Scroll Chiller
• Original 435 tons and 640 gpm
• Redesign 240 tons and 460 gpm
• Reduction of 200 tons or 45
• 2-Air Cooled Chillers were selected to replace 2
  larger existing air cooled chillers
• Existing smaller chiller to remain
• Used for Data Center AHU

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Mechanical Redesign

• Pumps and Piping

  Original Redesign
Primary CHW 2 _at_ 280 gpm 2 _at_ 190 gpm
Secondary CHW 2 _at_ 640 gpm 2 _at_ 460 gpm
West View
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Mechanical Redesign

• Underfloor Air Distribution System
• Advantages
• Flexible
• Large amount of data cables
• Disadvantages
• Possible leakage
• Requires a large volume of air
• Supply air temperature

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Mechanical Redesign

• Underfloor Air Distribution System with DOAS
• VOATOA VFCTFC VTOT(65F)
• (168)(50F) VFC(70F) (5194)(65F)
• VFC 4706 cfm

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Mechanical Redesign

• Emissions
• Percent Reduction
• NOx 29
• SOx, CO2, and Particulates 16
• Energy Charge
• Electricity 0.02383 / KWh
• Natural Gas 0.5 / therm
• Energy Cost Savings
• Savings of 692,632 KWh/Year 16 reduction
• 43,623 per year

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Mechanical Redesign

• Cost Analysis
• New Equipment Cost 448,850
• Original Equipment Cost 388,650
• Cost Difference for Redesign 60,200
• Simple Payback Period 1 year 5 months
• Lost Rentable Space
• Original Design 7417 sq.ft. 8.7
• Redesign 4840 sq.ft. 5

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Electrical Analysis

• Analyzed effects of Mechanical Redesign
• Circuit Breaker Size
• Conductor Size
• Conduit Size

New Primary Chilled Water Pump (Quantity 2) (2
HP, 480V, 3-Phase, P.F. 0.90) NEC Table
430-150 gt FLC2.7 A KVA 1.73 2.7 A 480V
0.9 2.017 KVA Circuit Breaker Size 2.7 A
250 6.75 A gt 20 A, 3 P Breaker Conductor
Size 2.7 A 125 3.375 A NEC Table 310.16
gt 12 THW (Cu) Conduit Size NEC Table C1 gt
1/2
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Electrical Analysis
Panel Comparison Schedule Panel Comparison Schedule Panel Comparison Schedule Panel Comparison Schedule Panel Comparison Schedule Panel Comparison Schedule Panel Comparison Schedule Panel Comparison Schedule Panel Comparison Schedule
Unit Hp Voltage Phase FLC A kVA Quantity Total kVA
New Chiller 12 480 3 2.1 30 1.569 12 18.828
New P-1 2 480 3 2.7 20 2.017 2 4.034
New P-2 14.92 kW 480 3 17.97 60 13.43 2 26.86
New AHU 20 480 3 27 100 20.17 1 20.17
Enthalpy Wheel 1/4 480 3 1.1 15 0.822 1 0.822
Fan Coils 3 kW 480 3 3.6 40 2.69 31 83.39
                 
Old Chiller 217 kW 480 3 261 800 195.06 2 390.12
Old P-23 5 480 3 7.6 25 5.68 2 11.36
Old P-4AB 15 480 3 21 70 15.695 2 31.39
Old AHU 2AB 25 480 3 34 110 25.4 2 50.8
  10 480 3 14 40 10.5 2 21
Old AHU 3AB 60 480 3 77 250 57.5 2 115
  25 480 3 34 110 25.4 2 50.8
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Electrical Analysis

• Panelboard Comparison
• Original 1000A
• Redesign 300A

New Equipment Total kVA Sum kVA 25 kVAmax
175 Min Ampacity Total kVA / (0.48kV 1.73)
210.75 Max Ampacity (Sum kVA 75 kVAmax)
/ (0.48 kV 1.73) 260.86 Panel Ampacity 300
A
North-West View
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Fire Protection Analysis

• Analyzed use of Clean Agent FP System
• HFC-227ea chosen as agent
• Suitable for use in normally occupied spaces
• Design Concentration
• 8-10.8
• Agent Hold Time gt 10 minutes

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Fire Protection Analysis

• Tank Size
• 88.7 lbs. 1600cu.ft.
• 500 lbs. 9000cu.ft.
• 665 lbs 12000cu.ft.
• Floor mounted Tanks
• 1 Piping

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Conclusions

• DOAS with Fan Coils provide proper ventilation
  with reduced energy consumption
• Yearly energy reduction of 16
• Cost savings of 43,623 per year
• 1 year 5 month payback period
• Electrical
• Redesign of mechanical equipment reduced
  mechanical demand
• Fire Protection
• Clean Agent System using HFC-227ea should be used
  to protect valuable information and equipment

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Acknowledgements

• Jae-Weon Jeong
• Jeff Kokoski
• Joel Haight
• Adam Warriner
• Fellow Classmates
• Luke Klock
• Ryan Wanko and Ryan Buff

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Questions