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NIH Building 37 Modernization: Mechanical Redesign for Energy Efficiency and Sustainability

This presentation outlines the modernization project of NIH Building 37, located in Bethesda, Maryland. The project, which began in 1997 with a budget of $82.8 million, focuses on improving the mechanical systems for energy efficiency and sustainability. The redesign goals include decreasing cooling loads, implementing state-of-the-art laboratory facilities, and utilizing solar solutions to reduce peak electrical demands. The mechanical redesign features passive desiccant dehumidification with energy recovery, addressing cross-contamination concerns with fume hoods. Performance data for the SEMCO EXCLU-SIEVE TE3-70 model is provided, showcasing its efficiency and airflow capacity. The collaborative project team consists of NIH, NCI, FLAD & Associates, and various engineering firms, working towards a more sustainable and modern facility.

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NIH Building 37 Modernization: Mechanical Redesign for Energy Efficiency and Sustainability

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  1. National Institutes of HealthBuilding 37 Modernization Katie L. McGimpsey Mechanical Option The Pennsylvania State University Department of Architectural Engineering Spring 2005 Thesis

  2. Presentation Outline • General Project Information • Project Team • Existing Conditions • Redesign Goals • Mechanical Redesign • Solar Analysis • Structural Analysis • Conclusions • Acknowledgements • Questions NIH Building 37 Modernization Spring 2005

  3. General Project Information • Located in Bethesda, Maryland on the National Institutes of Health (NIH) campus • Began modernization phases in 1997 • $82.8 million NIH Building 37 Modernization Spring 2005

  4. Presentation Outline • General Project Information • Project Team • Existing Conditions • Redesign Goals • Mechanical Redesign • Solar Analysis • Structural Analysis • Conclusions • Acknowledgements • Questions NIH Building 37 Modernization Spring 2005

  5. Project Team • Owners: • National Institutes of Health (NIH) • National Cancer Institute (NCI) • Architects: • FLAD & Associates, Inc. • Louviere, Stratton & Yokel (LSY) • Engineers: • AEPA Architects & Engineers, P.C. • Affiliated Engineers, Inc. (MEP) • James Posey Associates, Inc. (Consulting Engineers) • Aerosol Monitoring & Analysis (Environmental) • Rathgeber/Goss Associates (Structural) • JBG Engineers (Audiovisual) • General Contractor: • Whiting Turner • CM: • Smith Management Construction, Inc. NIH Building 37 Modernization Spring 2005

  6. Presentation Outline • General Project Information • Project Team • Existing Conditions • Redesign Goals • Mechanical Redesign • Solar Analysis • Structural Analysis • Conclusions • Acknowledgements • Questions NIH Building 37 Modernization Spring 2005

  7. Existing Conditions • Architectural Features • Two circulation towers • Four utility corridors • Architectural Design • 21,889 m2 (235,613 ft2) • 6 stories above grade • Offices & laboratories • Mechanical penthouse NIH Building 37 Modernization Spring 2005

  8. Electrical/Lighting Underground duct system from Bldg 36 Main distribution: 4000A, 480Y/277V, 3-phase, 4-wire Transformers: (3) 2500kVA, 13.8kV to 480Y/277V, 3-phase, 4-wire Fluorescent light fixtures: RF suppression ballasts Laboratory lighting density = 2.5 W/m2 Existing Conditions NIH Building 37 Modernization Spring 2005

  9. Existing Conditions • Structural • Steel column grid matrix • Pre-cast concrete panels • Pre-tensioned concrete floor slabs • Roof System • Concrete slab on metal roof deck • Roof drains NIH Building 37 Modernization Spring 2005

  10. Mechanical (8) 100% OA AHUs supplying to a zoned VAV system Approximately 28,000-29,000 L/s (59,000-61,000 cfm) (8) Fume exhaust fans 32,000 L/s (68,000 cfm) District heating/cooling Chilled water: 6ºC, (3) constant speed tertiary pumps Steam: 20,000 lbs/hr, 165 psi Fire Protection Passive System Corridors: 1 hour fire rating Independent risers for fume hoods Active System Zoned automatic sprinkler system Existing Conditions NIH Building 37 Modernization Spring 2005

  11. Presentation Outline • General Project Information • Project Team • Existing Conditions • Redesign Goals • Mechanical Redesign • Solar Analysis • Structural Analysis • Conclusions • Acknowledgements • Questions NIH Building 37 Modernization Spring 2005

  12. Redesign Goals • Mechanical • Energy Efficient • Decreased Cooling Load • Cost Savings • State-of-the-Art Laboratory and Research Facility • Solar • Decrease Peak Electrical Load • Cost Efficient • Structural • Support Additional Loads of New Equipment NIH Building 37 Modernization Spring 2005

  13. Redesign Goals • Mechanical Design Conditions NIH Building 37 Modernization Spring 2005

  14. Presentation Outline • General Project Information • Project Team • Existing Conditions • Redesign Goals • Mechanical Redesign • Solar Analysis • Structural Analysis • Conclusions • Acknowledgements • Questions NIH Building 37 Modernization Spring 2005

  15. Mechanical Redesign • Passive Desiccant Dehumidification – Energy Recovery • Cross-contamination concerns with fume hoods • Based on SEMCO model: EXCLU-SIEVE 3 Ǻ molecular sieve desiccant coating NIH Building 37 Modernization Spring 2005

  16. Mechanical Redesign • SEMCO EXCLU-SIEVE TE3-70 Model NIH Building 37 Modernization Spring 2005

  17. Mechanical Redesign Performance Data Velocity: 900 fpm Wheel efficiency: 76% Pressure drop: 0.94 in. wg Wheel model size: 70 Airflow rate: 29,900 L/s (63,360 cfm) Unit Dimensions Net weight: 4680 lbs Flow area/side: 70.4 ft2 Nominal airflow: 26,500 L/s (56,000 cfm) C = 89.4 in B = 79.1 in W = 23.0 in A = 171.5 in D = 84.3 in NIH Building 37 Modernization Spring 2005

  18. Mechanical Redesign NIH Building 37 Modernization Spring 2005

  19. Presentation Outline • General Project Information • Project Team • Existing Conditions • Redesign Goals • Mechanical Redesign • Solar Analysis • Structural Analysis • Conclusions • Acknowledgements • Questions NIH Building 37 Modernization Spring 2005

  20. Solar Analysis • Photovoltaic (PV) Solar Cells • Converts solar radiation into electric power • Feasibility • 4-5kWh/m2/day • Peak Electric Load • 5,846,644 kWh • BP Solar 4160 S • 62.7”x31.1” • 2480 modules • 512,216 kWh NIH Building 37 Modernization Spring 2005

  21. Solar Analysis Total Initial Costs = $3,424,712 2.1 years NIH Building 37 Modernization Spring 2005

  22. Presentation Outline • General Project Information • Project Team • Existing Conditions • Redesign Goals • Mechanical Redesign • Solar Analysis • Structural Analysis • Conclusions • Acknowledgements • Questions NIH Building 37 Modernization Spring 2005

  23. Structural Impact Analysis • Increased Loading • ASCE 7-98 • Roof Live Load (Lr=20R1R2=16 psf) • Reduction in Live Load • LRFD • Member sizing (Columns and Composite Beams) NIH Building 37 Modernization Spring 2005

  24. Structural Impact Analysis Roof Design Non-composite 1.3C24 with t=3.3” LW concrete slab Column Design W12x26 Composite Beam Mechanical Floor Design 253 kips 203kips 516 kips 413 kips 165N4k Joist Girder 778 kips 623 kips Composite 3VLI17 with t=6.5” NW concrete slabs 1040 kips 833 kips 16K2 Joists with 2 Rows Bridging NIH Building 37 Modernization Spring 2005

  25. Presentation Outline • General Project Information • Project Team • Existing Conditions • Redesign Goals • Mechanical Redesign • Solar Analysis • Structural Analysis • Conclusions • Acknowledgements • Questions NIH Building 37 Modernization Spring 2005

  26. Conclusions • Recommendations NIH Building 37 Modernization Spring 2005

  27. Presentation Outline • General Project Information • Project Team • Existing Conditions • Redesign Goals • Mechanical Redesign • Solar Analysis • Structural Analysis • Conclusions • Acknowledgements • Questions NIH Building 37 Modernization Spring 2005

  28. Acknowledgements • Special Thanks to… • The AE Department, Staff & Faculty • AEI sponsor: Michael Soong • LSY sponsors: James Louviere and Christine Ward • Smith Management sponsor: Randy Baer • Mechanical Professors, especially Dr. Jim Freihaut • My Family and Friends • AE Class of 2005 NIH Building 37 Modernization Spring 2005

  29. Questions NIH Building 37 Modernization Spring 2005

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