The Florida State University Ringling Conservation Center Sarasota, - - PowerPoint PPT Presentation

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The Florida State University Ringling Conservation Center Sarasota, - - PowerPoint PPT Presentation

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The Florida State University Ringling Conservation Center Sarasota, Florida Linda Lewis Mechanical Option Spring 2005 Presentation Outline General Information Project Team Existing Design Redesign Goals Design

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The Florida State University Ringling Conservation Center Sarasota, Florida Linda Lewis Mechanical Option Spring 2005

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SLIDE 2

Linda Lewis Mech Option The FSU Ringling Conservation Center

Presentation Outline

  • General Information
  • Project Team
  • Existing Design
  • Redesign Goals
  • Design Considerations
  • Mechanical Redesign
  • Acoustical Analysis
  • Lighting Analysis
  • Conclusion and Recommendations
  • Acknowledgements
  • Questions
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Linda Lewis Mech Option The FSU Ringling Conservation Center

General Information

  • Located- Sarasota Florida
  • n the Ringling Campus
  • John Ringling – Sarasota

is the Circus Capitol of the World

  • Campus
  • Museum of Art
  • Cà d´zan
  • Circus Museum
  • Conservation Center
  • Florida State University
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Linda Lewis Mech Option The FSU Ringling Conservation Center

General Information

  • Size-
  • 3 Stories
  • 73,000 sq ft Building
  • 23,000 sq ft Parking

Garage/ Loading Deck

  • Building Functions-
  • Art Conservation- 2,020 Sq Ft
  • Art Library- 17,050 Sq Ft
  • Art Storage -4330 Sq Ft
  • Classrooms- 2989 Sq Ft
  • Offices- 4655 Sq Ft
  • Unique Features-
  • Lobbies, Corridors and Elevators – Fit large

Pieces of artwork

  • Art Conservation Lab– Self Balancing System

Second Floor First Floor

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SLIDE 5

Linda Lewis Mech Option The FSU Ringling Conservation Center

Presentation Outline

  • General Information
  • Project Team
  • Existing Design
  • Redesign Goals
  • Design Consideration
  • Mechanical Redesign
  • Acoustical Analysis
  • Lighting Analysis
  • Conclusion Recommendations
  • Acknowledgements
  • Questions
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SLIDE 6

Linda Lewis Mech Option The FSU Ringling Conservation Center

Project Team

  • Owner: Sarasota County
  • Architect: Hellmuth, Obata +

Kassabaum, Inc. (HOK) – Tampa, Florida

  • MEP & Technology: TLC

Engineering for Architecture – Tampa, Florida

  • Structural Engineer: Master

Consulting Engineers – Tampa, Florida

  • Construction Manager: To Be

Determined– GC Hard Bid with GMP on Final CD’s

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SLIDE 7

Linda Lewis Mech Option The FSU Ringling Conservation Center

Presentation Outline

  • General Information
  • Project Team
  • Existing Design
  • Redesign Goals
  • Design Considerations
  • Mechanical Redesign
  • Acoustical Analysis
  • Lighting Analysis
  • Conclusion Recommendations
  • Acknowledgements
  • Questions
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Linda Lewis Mech Option The FSU Ringling Conservation Center

E xisting Conditions

  • Mechanical
  • 8 Air Handling Units (50,790 cfm)
  • 3-Constant Volume – EDH and Humidifiers
  • Serve Art Storage Areas
  • 3-Variable Air Volume (VAV) – Electric Reheat
  • Serve 2nd Floor- Classroom, Office Area, Library
  • 2-VAV Dual Path- Electric Reheat
  • Dual Path- Separate Cooling Coils for RA and OA
  • Serve 1st Floor- Classrooms, Library
  • Chiller Plant
  • Provides Chilled Water for

the Entire Campus

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SLIDE 9

Linda Lewis Mech Option The FSU Ringling Conservation Center

Presentation Outline

  • General Information
  • Project Team
  • Existing Design
  • Redesign Goals
  • Design Consideration
  • Mechanical Redesign
  • Acoustical Analysis
  • Lighting Analysis
  • Conclusion and Recommendations
  • Acknowledgements
  • Questions
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Linda Lewis Mech Option The FSU Ringling Conservation Center

Redesign Goals

  • To Save Energy
  • 71% of the US Electricity comes

from Fossil Fuels

  • Fossil Fuels Create Emissions
  • Green House Effect
  • DOE - 40-60% of Electricity is used

in HVAC Systems

  • 80% of Electricity in the South is

used by HVAC

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Linda Lewis Mech Option The FSU Ringling Conservation Center

Redesign Goals

  • Improve Indoor Air Quality (IAQ)
  • The Environmental Protection Agency (EPA)- 90% of
  • ur time indoors
  • Mild effects of poor IAQ are: irritation of the eyes,

nose, and throat, headaches, dizziness, and/or fatigue

  • Serious effects of poor IAQ: respiratory cancer,

chronic obstructive pulmonary disease or immunologic disorders

  • Asthma Numbers are Increasing
  • Poor indoor air quality can result in a decrease in

productivity of workers and larger numbers of absenteeism’s.

  • Lower Operation Costs
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Linda Lewis Mech Option The FSU Ringling Conservation Center

Presentation Outline

  • General Information
  • Project Team
  • Existing Design
  • Redesign Goals
  • Design Considerations
  • Mechanical Redesign
  • Acoustical Analysis
  • Lighting Analysis
  • Conclusion and Recommendations
  • Acknowledgements
  • Questions
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Linda Lewis Mech Option The FSU Ringling Conservation Center

Design Considerations

  • Outdoor Conditions
  • Summer
  • 93°F DB, 80°F WB
  • Winter
  • 39°F DB
  • Indoor Conditions
  • General Occupancy Areas
  • Summer - 72°F DB, 50% RH
  • Winter - 68°F DB, 55% RH
  • Areas with Art work
  • All Year - 70°F DB, 50% RH
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Linda Lewis Mech Option The FSU Ringling Conservation Center

Design Considerations

  • Proposal
  • Energy Recovery Wheels
  • Enthalpy Wheels
  • Thermal Storage
  • Partial Storage
  • Load Leveling
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Linda Lewis Mech Option The FSU Ringling Conservation Center

Presentation Outline

  • General Information
  • Project Team
  • Existing Design
  • Redesign Goals
  • Design Considerations
  • Mechanical Redesign
  • Acoustical Analysis
  • Lighting Analysis
  • Conclusion and Recommendations
  • Acknowledgements
  • Questions
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Linda Lewis Mech Option The FSU Ringling Conservation Center

Mechanical Redesign- E nthalpy Wheels

  • Background Information
  • Can Reduce Outdoor Air Load on the

Cooling Coil

  • Help in better IAQ
  • Remove containments from the air
  • Allows for a more energy efficient way of

bringing in appropriate ventilation air (ASHRAE Standard 62)

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Linda Lewis Mech Option The FSU Ringling Conservation Center

Mechanical Redesign- E nthalpy Wheels

  • Air Handling Units
  • Novel Aire Wheels

480 580 880 AHU 2-3 4500 7600 10,000 AHU 2-2 1380 2000 5600 AHU 2-1 320 420 3100 AHU 1-5 480 580 1450 AHU 1-4 4870 4870 4870 AHU 1-3 1380 1540 2500 AHU 1-2 470 590 990 AHU 1-1 EA cfm OA cfm SA cfm AHU

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Linda Lewis Mech Option The FSU Ringling Conservation Center

Mechanical Redesign- E nthalpy Wheels

  • Calculations
  • Bin Year
  • Occupied vs Unoccupied
  • Summer vs School Year

Novel Aire Simulation Program

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Linda Lewis Mech Option The FSU Ringling Conservation Center

Mechanical Redesign- E nthalpy Wheels

  • Wheel Operation
  • On When Sum of Sensible and Latent

Savings is Positive

  • Off When Sum of Sensible and Latent

Savings is Negative

  • Modulate When Outdoor Air Temperature

is Lower than Supply Air Temperature

  • When Heating the Air the Air is also Humidified
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Linda Lewis Mech Option The FSU Ringling Conservation Center

Mechanical Redesign- E nthalpy Wheels

  • Summary of Results

38% 41,292 67,995 109,287 AHU 2-3 29% 352,498 855,603 1,208,102 AHU 2-2 32% 203,404 435,785 639,188 AHU 2-1 32% 40,966 88,252 129,219 AHU 1-5 33% 64,622 133,077 197,700 AHU 1-4 35% 289,131 533,994 823,124 AHU 1-3 31% 140,943 317,167 458,110 AHU 1-2 34% 82,901 157,954 240,855 AHU 1-1 % Savings Savings Total kBtu With EW kBtu Without EW kBtu AHU

Total Outdoor Air Load Savings

.

  • Total Savings – 33%
  • Of the Total
  • Latent – 84%
  • Sensible – 16%
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Linda Lewis Mech Option The FSU Ringling Conservation Center

Mechanical Redesign- E nthalpy Wheels

  • Wheels Savings

$1,166 $2,110 157,334 88,500 Totals $40.34 $73.01 5444.6 3,062.6 AHU 2-3 $350.35 $634.03 47280.1 26,595.1 AHU 2-2 $201.92 $365.42 27249.7 15,328.0 AHU 2-1 $40.67 $73.60 5488.7 3,087.4 AHU 1-5 $39.83 $72.07 5374.7 3,023.3 AHU 1-4 $285.89 $517.38 38581.9 21,702.3 AHU 1-3 $140.53 $254.32 18964.8 10,667.7 AHU 1-2 $66.31 $120.00 8948.9 5,033.7 AHU 1-1 Off Peak kWh Cost On Peak kWh Cost Off Peak kWh Per Year On Peak kWh per Year AHU

Total Cost Savings

$18,405 $2,605 8 $12,500 Totals $6,730.00 $630.00 1 $6,100.00 ECW 724 $4,030.00 $630.00 1 $3,400.00 ECW 544 $3,505.00 $505.00 2 $1,500.00 ECW 364 $3,120.00 $420.00 3 $900.00 ECW 244 $1,020.00 $420.00 1 $600.00 ECW 204 Total Cost Installation Cost Number of Wheels Price Wheel

Enthalpy Wheel First Cost

  • First Cost Wheels

Cost Savings: $3276

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Linda Lewis Mech Option The FSU Ringling Conservation Center

Mechanical Redesign- E nthalpy Wheels

  • Cost Analysis
  • Wheels - $18,405
  • Reconfiguring AHU and Ductwork - $5000
  • Reduction in Cooling Coil Size - $7900
  • Conclusions
  • Payback just using kWh Savings – 4.7 Yrs
  • Less with On Peak kW Demand Reduction
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Linda Lewis Mech Option The FSU Ringling Conservation Center

Mechanical Redesign- Thermal Storage

  • Current Chiller Plant
  • 2 – 650 Water Cooled Centrifugal

Chillers

  • Provide 40°F Water
  • Ice Storage
  • York Chillers
  • Calmac Icetanks
  • Melted Ice on Coil
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Linda Lewis Mech Option The FSU Ringling Conservation Center

Mechanical Redesign- Partial Storage

  • Florida Power and Light
  • Time of Use Rates

0.788¢ 2.279¢ $8.15 $38.12 500 -1999 1.021¢ 3.337¢ $8.16 $38.58 21-499 Off Peak kWh Charge On Peak kWh Charge On Peak kW Charge Monthly Demand Charge kW Demand

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Linda Lewis Mech Option The FSU Ringling Conservation Center

Mechanical Redesign- Partial Storage

July 0.0 100.0 200.0 300.0 400.0 500.0 600.0 700.0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Hour T o n s July

BASE LOAD CHILLER STORE

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Linda Lewis Mech Option The FSU Ringling Conservation Center

Mechanical Redesign- Partial Storage

  • Calculations
  • Bin Year
  • March Design Day
  • 4500 Ton Hours Needed
  • 500 Ton Ice Chiller for 9 Hours
  • Savings

396 109 505 December 401 109 510 November 443 109 553 October 455 109 565 September 468 109 578 August 467 109 576 July 471 109 580 June 471 109 580 May 441 109 550 April 346 109 455 March 416 109 525 February 357 109 466 January Difference Thermal Storage Without Thermal Storage Month

On-Peak kW Demand

86.9% 42.1%

% kWh Off-Peak

13.1% 57.9%

% kWh On-Peak 2,379,325 1,003,029 kWh Off-Peak 358,030 1,380,196 kWh On-Peak 2,737,355 2,383,225 Total kWh Thermal Storage Without Thermal Storage Category

Summary of kwh Usage

$42,035 $46,047 $88,083 Total Price $2,875 $3,311 $6,186 December $2,879 $3,598 $6,477 November $3,955 $4,194 $8,149 October $4,146 $4,162 $8,308 September $4,259 $4,254 $8,513 August $4,202 $4,422 $8,624 July $4,199 $4,132 $8,331 June $3,441 $4,252 $7,694 May $3,961 $3,845 $7,806 April $2,453 $3,460 $5,913 March $3,073 $3,126 $6,199 February $2,591 $3,291 $5,882 January Savings Electric Bill w/ Thermal Storage Electric Bill w/out Thermal Storage Month

Totals Partial Storage Savings

Average On Peak kW Shift – 428 kW 52% Reduction in Operation Cost

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Linda Lewis Mech Option The FSU Ringling Conservation Center

Mechanical Redesign- Partial Storage

  • First Cost – RS Means

$969,850 Total $456,000 Ice Storage Tanks (4560 Ton-hr) $169,600 Redundant Chiller 500 Tons $94,250 Base Load Chiller 180 ton $250,000 Ice Chiller 500 tons Thermal Storage Equipment

Thermal Storage First Cost

$430,000 Total $215,000 650 Ton Chiller Redundant $215,000 650 Ton Chiller Original System Equipment

Original System First Cost

Cost of Thermal Storage System = 125% Increase

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Linda Lewis Mech Option The FSU Ringling Conservation Center

Mechanical Redesign- Partial Storage

  • Cost Analysis
  • First Cost Difference = $539,850
  • Inflation Rate of Money = 1.023%
  • Annual Savings = $42,035
  • Payback Period = 12 Yrs
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Linda Lewis Mech Option The FSU Ringling Conservation Center

Mechanical Redesign- Load Leveling

July 0.0 100.0 200.0 300.0 400.0 500.0 600.0 700.0 800.0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Hour of the Day Tons July

STORE

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Linda Lewis Mech Option The FSU Ringling Conservation Center

Mechanical Redesign- Load Leveling

  • Calculations
  • July Design Day
  • 2650 Ton Hours Needed
  • 310 Ton Ice Chiller
  • Savings

$13,738 $72,949 $86,687 Total Price $624 $5,693 $6,317 December $561 $5,889 $6,450 November $1,567 $6,287 $7,854 October $1,658 $6,302 $7,960 September $1,703 $6,412 $8,115 August $1,335 $6,864 $8,199 July $1,479 $6,632 $8,111 June $1,578 $6,426 $8,005 May $1,544 $5,985 $7,529 April $522 $5,185 $5,707 March $607 $6,012 $6,619 February $559 $5,262 $5,821 January Savings Electric Bill w/ Thermal Storage Electric Bill w/out Thermal Storage Month

Totals Load Leveling Savings

217 288 505 December 212 298 510 November 244 308 553 October 256 309 565 September 264 314 578 August 240 336 576 July 255 325 580 June 265 315 580 May 257 293 550 April 193 262 455 March 221 304 525 February 200 266 466 January Difference Thermal Storage Without Thermal Storage Month

On-Peak kW Demand Load Leveling

62.8% 42.1%

% kWh Off-Peak

37.2% 57.9%

% kWh On-Peak 1,650,653 1,003,029 kWh Off-Peak 978,638 1,380,196 kWh On-Peak 2,629,290 2,383,225 Total kWh Thermal Storage Without Thermal Storage Category

Summary of kwh Usage Load Leveling

16% Reduction in Operation Cost Average On Peak kW Shift – 235 kW

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Linda Lewis Mech Option The FSU Ringling Conservation Center

Mechanical Redesign- Load Leveling

  • First Cost – RS Means

Thermal Storage First Cost

$430,000 Total $215,000 651 Ton Chiller Redundant $215,000 650 Ton Chiller Original System Equipment

Original System First Cost

Cost of Thermal Storage System = 50% Increase

$641,000 Total $266,000 Ice Storage Tanks (2660 Ton-hr) $215,000 Redundant Chiller 650 Tons $160,000 Ice Chiller 320 tons Thermal Storage Equipment

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Linda Lewis Mech Option The FSU Ringling Conservation Center

Mechanical Redesign- Load Leveling

  • Cost Analysis
  • First Cost Difference = $211,000
  • Inflation Rate of Money = 1.023%
  • Annual Savings = $13,738
  • Payback Period = 15.5 Yrs
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Linda Lewis Mech Option The FSU Ringling Conservation Center

Presentation Outline

  • General Information
  • Project Team
  • Existing Design
  • Redesign Goals
  • Design Considerations
  • Mechanical Redesign
  • Acoustical Analysis
  • Lighting Analysis
  • Conclusion and Recommendations
  • Acknowledgements
  • Questions
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Linda Lewis Mech Option The FSU Ringling Conservation Center

Acoustical Analysis

Reverberation Time

High 1.86 4000 High 1.86 2000 High 2.79 1000 High 2.01 500 Good 1.22 250 Good 0.43 125

Range 0.6 to 1.4 T60 Freq

  • Room Dimensions- 76’x 30’x 20’

A V T 05 .

60 =

∑

= i Si A α

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Linda Lewis Mech Option The FSU Ringling Conservation Center

Acoustical Analysis

  • Echo Eliminator
  • Recycled Cotton - Green
  • 2”- 2’x4’- (320ft2 = 40 Panels)

1.10 320 1.22 4000 1.13 320 1.14 2000 1.38 320 1.21 1000 1.18 320 1.16 500 1.00 320 0.6 250 0.42 320 0.17 125 T60 Panel Area α_Panel Freq

  • Cost
  • $1.75/ft2 = $560
  • Shipping = $40
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Linda Lewis Mech Option The FSU Ringling Conservation Center

Presentation Outline

  • General Information
  • Project Team
  • Existing Design
  • Redesign Goals
  • Design Considerations
  • Mechanical Redesign
  • Acoustical Analysis
  • Lighting Analysis
  • Conclusion and Recommendations
  • Acknowledgements
  • Questions
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Linda Lewis Mech Option The FSU Ringling Conservation Center

Lighting Analysis

  • Classroom Current Design
  • 2’x 2’ two lamp, Parabolic

Louvered, lay-in Fluorescent Fixtures

  • Classroom Functions
  • Teaching
  • Creating Artwork
  • New Design
  • Direct/Indirect Fixtures
  • Incandescent Downlights
  • Lamps
  • Daylight – 5000 K
  • Incandescent – Natural Light
  • Fluorescent – 4100 K (CRI = 85)
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SLIDE 38

Linda Lewis Mech Option The FSU Ringling Conservation Center

Presentation Outline

  • General Information
  • Project Team
  • Existing Design
  • Redesign Goals
  • Design Considerations
  • Mechanical Redesign
  • Acoustical Analysis
  • Lighting Analysis
  • Conclusion and Recommendations
  • Acknowledgements
  • Questions
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Linda Lewis Mech Option The FSU Ringling Conservation Center

Conclusions and Recommendations

  • Add Enthalpy Wheels
  • Payback Period 4.7 Years
  • Decrease kW Demand
  • Do Not Use Thermal Storage
  • Both Partial Storage and Load Leveling have

too high of Payback Periods

  • Use More Smaller Chillers
  • Add Acoustical Panels
  • For a Low Cost Fix the Echo
  • Change Lighting in the Classroom Areas
  • Provide Better Lighting for Students to Learn
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SLIDE 40

Linda Lewis Mech Option The FSU Ringling Conservation Center

Presentation Outline

  • General Information
  • Project Team
  • Existing Design
  • Redesign Goals
  • Design Considerations
  • Mechanical Redesign
  • Acoustical Analysis
  • Lighting Analysis
  • Conclusion and Recommendations
  • Acknowledgements
  • Questions
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Linda Lewis Mech Option The FSU Ringling Conservation Center

Acknowledgements

Special Thanks To:

  • Dr. Freihuat
  • Dr. Mumma
  • Dr. Bahnfleth
  • Dr. Burroughs
  • AE Faculty
  • AE Staff
  • Novel Aire –

David McDonald

  • Family
  • Friends
  • AE Class of 2005
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Linda Lewis Mech Option The FSU Ringling Conservation Center

Questions? Questions?

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Linda Lewis Mech Option The FSU Ringling Conservation Center

Desiccant Dehumidification

24,935 58,232

  • 33,297

29,631 80,449 87,863 47,153 74.9 111.1 Active Desiccant 68,212 54,461 13,751 30,732 33,402 87,863 47,153 76.3 74.2 Enthalpy Wheel Total Savings Btu Latent OA Load Savings Btu Sensibl e OA Load Savings Btu Latent OA Load w/EW Btu Sensible OA Load with EW Btu OA Latent CC Load Btu OA Sensible CC Load Btu Leavi ng Gr/lb Leavi ng DB System

Overall Savings of Active Desiccant is 37% of the EW Savings

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Linda Lewis Mech Option The FSU Ringling Conservation Center

Using Smaller Chillers

  • Current Chiller Design 2 – 650 Ton

Chillers

  • Proposed to use
  • 2 – 350 Ton Chillers
  • 1 – 300 Ton Chiller
  • Advantages
  • Lessen Redundant Capacity Needed
  • Increase Efficiency- Decreasing Energy
  • Approximate Savings - $8,000

Electricity/Yr

  • First Cost – 20% Reduction in Cost
  • Still have the Ability to Add to Plant
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Linda Lewis Mech Option The FSU Ringling Conservation Center

E xisting Conditions

  • Electrical
  • 2000 amp, 480/277, 3 phase, 4 wire system
  • 8 step down transformers– 208Y/120
  • Lighting
  • Lobbies- Compact Fluorescent Downlights
  • Classrooms- 2’x 2’—2 lamp parabolic louvered fluorescents
  • Storage Areas- 4’—2 lamp industrial strip fixtures
  • Conservation Lab-8’—2 lamp direct/indirect pendant fluorescents
  • Structural
  • 3 Story Concrete Structure
  • Poured Concrete Columns
  • Precast Sofit Beams
  • Precast Concrete Joists – Ribs 5’ OC
  • Floor– Pour Concrete
  • Lateral System- Braced Steel Frame
  • Roof– Standing Seam Metal
  • Technology
  • Telephone outlets- Offices & Classrooms
  • Television – Classrooms
  • Ethernet- Classrooms, Library, Offices, Conservation Lab
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Linda Lewis Mech Option The FSU Ringling Conservation Center

Design Considerations

  • Building Operation
  • Library:
  • September-April

Monday-Sunday 7am – 9pm

  • May-August

Monday-Sunday 7am – 6pm

  • All other Areas:

Monday-Sunday 7am – 5pm