Puget Sound Energy Tenant Improvement
Project:
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100,000 ft2 Tenant Improvement of floors 8-12 in the PSE Building
Site Location:
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Bellevue, WA
Team:
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GC - Lydig Construction
- HVAC - PSF Mechanical, Inc.
HVAC Systems:
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Medium temperature variable air volume (VAV) systems utilizing two rooftop units
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Series type VAV terminal boxes with silent mercury contactors; terminal boxes use electric heat at all perimeter
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Communicating electronic direct digital controls system
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Central toilet exhaust systems utilizing quiet utility-set type rooftop centrifugal fans
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Raised curb sound attenuating system at rooftop units
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Water cooled Liebert Units were used to cool the IT room
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Water source Mammoth Heat Pumps were used to cool the communications room
Energy Saving Strategies:
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ECM motors on the Nailor Fit Boxes
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Waterside economizers were provided with the computer room units and the heat pumps
- Direct Digital Controls provide accurate temperature control, minimizing drift, and overshoot; heating signals are "pulsed" to exactly match load requirements
