Axiom Engineers: Commissioning Commercial Interiors

PORTOLA HOTEL AND SPA - Commissioning: Operation & Maintenance

This hotel and spa is pursuing LEED for Existing Buildings: Operation and Maintenance certification through the use of a Commissioning Agent.
Axiom Engineers℠ verified equipment performance to determine low-cost and no-cost improvement options. Commissioning activities included the installation and analysis of over 100 local data loggers. These data loggers provided information that helped identify system inefficiencies and equipment failures.

These improvements are estimated to result in over 20% energy savings with a less than one-year payback. Systems that will benefit from commissioning include eight large packaged rooftop air handlers, the chilled water system, the domestic hot water system, and numerous fan coils. Improvements include installing demand control ventilation, improved utilization of installed economizers, and updating existing lighting systems with compact fluorescents, LEDs, and higher efficiency fluorescents.

Project Summary

• 200,000 sq. ft.
• 75 ton packaged roof top air conditioner.
• No existing integrated building control system.
• 4 smaller roof top air handlers (combination of cooling coils and packaged air conditioners).
• 4 system exhaust fans.
• 40 tons Chiller and chilled water distribution system.
• Domestic hot water system heated by cogeneration system.

Project Accomplishments

• Performed first complete building equipment trending analysis since construction (1978).
• Provided low cost and no cost energy savings options estimated to result in 20% energy savings.
• Provided numerous equipment operation improvements resulting in saved maintenance requirements.
• Provided low cost options to improve indoor air quality from analysis of air balance report.

Selected Projects

LEED® 2.0 Commercial Interiors
LEED® 2.2 New Construction
LEED® Existing Buildings: Portola Hotel & Spa
CSUMB Dining Commons
Caldecott Bore 4 Tunnel
Doyle Dr. and Highways 101 and 1 Tunnel
East San Jose Carnegie Branch Library
Live Oak Community Resources Center
Monterey Peninsula College, Student Center
Naval Postgraduate School, Boiler Replacement
Nordic Naturals
Presidio of Monterey
Vandenberg Air Force Base
West Valley College Campus Centers