Westinghouse Nuclear Engineering Headquarters

1. Westinghouse electric nuclear engineering headquartersDaniel Aughenbaugh - Mechanical option Westinghouse Nuclear Engineering Headquarters Daniel Aughenbaugh Mechanical Option

2. Presentation OutlineIntroductionExisting mechanical systemMy Design analysesdedicated outdoor air systemground source heat pump plantcentral plantplant initial costplant lifecycle costarchitectural study- façade redesignconclusions Westinghouse Nuclear Engineering Headquarters Daniel Aughenbaugh Mechanical Option

3. facility informationlocation: Pittsburgh areaProject cost: $240 millionComplex size: 3 buildings (4-5 floors) 844,600 SFOccupancy type: open officedelivery method: Design-bid-build joint ventureconstruction period: 2/2008 - 5/2010 Westinghouse Nuclear Engineering Headquarters Introduction

4. Westinghouse Nuclear Engineering Headquarters Introduction

5. Westinghouse Nuclear Engineering Headquarters Introduction

6. Program is largely open office space with a Cafeteria, Data Center, and Fitness Center Façade is approximately 40% glazing for all orientations VAV system conditions the Office Spaces CRAC Units condition the Data Center Four Air Handling Units supply 293,600 CFM and 40% OA Three 450 Ton Chillers and Cooling Towers Electric Resistance Re-heat Facility Mechanical Information Westinghouse Nuclear Engineering Headquarters Current Design

7. Redesign Analyses Westinghouse Nuclear Engineering Headquarters Redesign Analyses

8. Reduce Plant Loads with a Dedicated Outdoor Air System • Investigate a Hybrid Ground Source Heat Pump Plant • 3. Investigate a Central Plant • 4. Façade Redesign Redesign Analyses Westinghouse Nuclear Engineering Headquarters Redesign Analyses

9. Energy Use • Initial Cost • Lifecycle Cost • Indoor Air Quality • Environmental Impact • Construction Impact • Operation and Maintenance Criteria Westinghouse Nuclear Engineering Headquarters Redesign Analyses

10. Dedicated Outdoor Air System Westinghouse Nuclear Engineering Headquarters DOAS

11. 1. Less Ventilation Air 2. Indoor Air Quality 3. Sensible and Latent Loads are decoupled Dedicated Outdoor Air System Westinghouse Nuclear Engineering Headquarters DOAS

12. Proposed: • Active Chilled Beams (ACB) • DOAS Fan Powered Terminal Units (FPT) • 3. ACBs to condition Core Office Areas, DOAS FPTs to condition Perimeter Office Areas Plant Load Reduction Westinghouse Nuclear Engineering Headquarters DOAS

13. Active Chilled Beams Westinghouse Nuclear Engineering Headquarters DOAS

14. DOAS Fan Powered Terminal Units Westinghouse Nuclear Engineering Headquarters DOAS

15. Plant Loading Westinghouse Nuclear Engineering Headquarters DOAS

16. System Initial Cost Westinghouse Nuclear Engineering Headquarters DOAS

17. System Life Cycle Cost Westinghouse Nuclear Engineering Headquarters DOAS

18. Hybrid Ground Source Heat Pump Plant Westinghouse Nuclear Engineering Headquarters Hybrid GSHP

19. Hybrid GSHP Plant Schematic Westinghouse Nuclear Engineering Headquarters Hybrid GSHP

20. Hybrid GSHP Sizing Cooling Tower Size Ground Loop Size Westinghouse Nuclear Engineering Headquarters Hybrid GSHP

21. Plant Initial Cost Westinghouse Nuclear Engineering Headquarters Plant Analysis

22. Plant Lifecycle Cost Westinghouse Nuclear Engineering Headquarters Plant Analysis

23. Architectural Study- Façade Redesign Westinghouse Nuclear Engineering Headquarters Architecture

24. North View South View Westinghouse Nuclear Engineering Headquarters Architecture

25. North Office Area Thermal Loading Westinghouse Nuclear Engineering Headquarters Architecture

26. South Office Area Thermal Loading Westinghouse Nuclear Engineering Headquarters Architecture

27. South Façade Redesign Westinghouse Nuclear Engineering Headquarters Architecture

28. South Office Section Westinghouse Nuclear Engineering Headquarters Architecture

29. North Office Redesign Westinghouse Nuclear Engineering Headquarters Architecture

30. North Conference Redesign Westinghouse Nuclear Engineering Headquarters Architecture

31. North Façade Redesign Westinghouse Nuclear Engineering Headquarters Architecture

32. Buffer Zone Redesign Westinghouse Nuclear Engineering Headquarters Architecture

33. Plant Impact Westinghouse Nuclear Engineering Headquarters Architecture

34. Conclusions Westinghouse Nuclear Engineering Headquarters Conclusions

35. Conclusions: Air Systems Westinghouse Nuclear Engineering Headquarters Conclusions

36. Conclusions: Mechanical Plant Westinghouse Nuclear Engineering Headquarters Conclusions

37. Conclusions The best alternate Air System for the Westinghouse Headquarters is a Dedicated Outdoor Air System coupled with an all DOAS Fan Powered Terminal configuration to condition the office space. The best alternate Plant for the Westinghouse Headquarters is a Hybrid Ground Source Heat Pump Plant. Westinghouse Nuclear Engineering Headquarters Conclusions

38. Thank You... Professor Bahnfleth Professor Freihaut Professor Holland Bob Hennessey, Turner Construction Ernie Tillman, LLI Engineering Joel R. Bernard, IKM Inc. Special Thanks to all my friends and family for their support! Westinghouse Nuclear Engineering Headquarters Conclusions

39. Questions ? Westinghouse Nuclear Engineering Headquarters Daniel Aughenbaugh Mechanical Option