Monitoring Based Commissioning at CSU San marcos

1. Monitoring Based Commissioning at CSU San marcos

2. Overview • Campus Overview • State of the Campus - Before MBCx • MBCx – A First Attempt • Lessons Learned • The Second Round – Refining the Process • Persistent Scorecards – with and without • The Final Buildings – Pushing the Envelope

3. Campus Overview • Over 12,000 students currently attend the 304-acre campus • 1.5 million Sq. Ft. of conditioned space • 960,000 Sq. Ft. on Central Plant • Master planned for 3 million Sq. Ft. and 25,000 students • 240 HP Hot Water Plant (previously 640HP) • 2,500 ton chiller plant - Primary variable flow • 16,000 ton hour TES tank • 80% of Campus CHW Distribution is Most Open Valve • Maxed out – currently accepting donations

4. The Campus

5. State of the Campus –Before MBCx • Campus Had a Higher BTU/SF Usage Than Other CSU Campuses • Higher Percentage of Lab Buildings Than Other CSU Campuses • Kellogg Library Experiment • Flaws of New Building Commissioning at The Time • Contractor Pays Commissioning Agent • No Proper Air Balancer • Contractors and Project Managers Did Not Take Recommendations From Campus or Commissioning Agent

6. MBCx – A First Attempt (2007) Buildings • Kellogg – 3 Years Old • Craven – 15 Years Old • University Hall – 9 Years Old Many Measures Identified • Economizers Failed • Sensors Not Calibrated • Valves Leaking By

8. Lessons Learned • Metering • Installing New Meters and Calibrating Existing • Data Acquisition • Bandwidth Issues With Energy Management System • Open Source Protocol was Necessary (BACNET) • Implementation Man Hours/Materials • Invest and Respond Timely

9. Results 21% Energy Reduction $147,000/year in savings 2.2 Year Simple Payback* *After Utility Incentives

10. The Second Round (2010) Buildings • Academic Hall - 18 Years Old • Science Hall 1 - 18 Years Old • Science Hall 2* - 9Years Old • University Commons - 18Years Old *Building Originally Not Commissionable Findings • A Few Valves Leaking By • Sensors Out of Calibration • Supply Air Temperature Resets • Static Pressure Resets

12. Second Round Results 14% Energy Reduction $76,141/year in savings 1.3 Year Simple Payback* *After Utility Incentives Should have won Best Practices Award

13. Continuous commissioning – With and Without Continuous Commissioning for Buildings • Minimizes drift • Identifies measures to maintenance staff • Identifies new energy efficiency measures • Savings calculations, cost analysis, and simple payback provided to campus when measures are identified

14. Continuous commissioning

15. Continuous commissioning – With and Without The Campus had a lapse in continuous commissioning services from June 2012 to July 2013. During this time period, campus energy usage increased approximately 3% year over year.

16. The Final buildings (2013-14) Pushing the envelope Buildings in Progress • Markstein – 7 Years Old • Arts – 9 Years Old • Central Plant – 5 Years Since Retrofit First Observations • Very Few Sensors Out of Calibration • Economizers are Functioning Properly • All Units Have Supply Air Temperature and Static Pressure Resets

17. Pushing the envelope What Measures Can Be Implemented • Demand Control Ventilation with Existing Occupancy Sensors • Included in newest Version of Title 24 • Reprogram Resets to Account for Problem Zones • Duct Sealing • Central Plant Reprogramming

18. Thank you for your time!