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How to optimize ddc systems to save energy in hospitals

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Hospitals and health care facilities are under increasing pressure to save costs by improving their energy performance. Implementing a plan to check, correct, and optimize their facility Direct …

Hospitals and health care facilities are under increasing pressure to save costs by improving their energy performance. Implementing a plan to check, correct, and optimize their facility Direct Digital Control (DDC) systems can generate significant energy savings for very little cost.

This webinar, presented by Pulse Energy and Nancy Myers, Energy Manager for the Vancouver Island Health Authority (VIHA), was on generating savings in health care facilities DDC system optimization. Nancy’s presentation covered:

- her team's plan and process for investigating and optimizing DDC systems
- examples of energy wasting problems that can occur in hospital DDCs
- an action plan to maintain the savings going forward

Published in: Business

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Transcript

  • 1. How to Optimize DDC Systems to Save Energy in Hospitals Nancy Myers Technical Services/Energy Manager Vancouver Island Health Authority
  • 2. Go To Webinar Control Panel Hide the control panel Ask us questions!
  • 3. Agenda • Introduction to Vancouver Island Health Authority (VIHA) • Overview of BC Hydro’s Continuous Optimization Program • Starting a DDC optimization program with on-site staff • Strategy and Sequence of Operations • Identifying Problems and Anomalies in the DDC System • Keys to Success • Q&A
  • 4. Vancouver Island Health Authority • 34 facilities, 392,734 sq meters across the island • Total electrical consumption within VIHA is 74,632,191 Kw/hrs for 2009, Gas consumption 425,000 Gj • 12 facilities in the COP program, 8 of which are being done internally
  • 5. Continuous Optimization Program • Available to buildings of at least 50,000 sq. ft. • Helps BC Hydro’s largest customers save energy and maintain savings • Participating buildings start with a 12 month baseline period
  • 6. Getting Started • Coordinated with key personnel: – Pulse Energy and site staff for meter installation – Site supervisors for selection of key staff for project – Pulse Energy for staff training • Set up site schedules for seasonal site visits • Coaching started at the beginning of program and continued throughout
  • 7. Pulse Energy Management Software
  • 8. Start up Meeting • Ensured staff understand the objectives and guidelines of the Continuous Optimization Program • Ensured buy-in from staff • Trained staff on how to use Pulse Energy Management Software (EMS) to identify loads in facilities
  • 9. On-site strategy • Review site documentation – Sequence of operations – DDC controls drawings and points lists • Check Pulse EMS for energy use anomalies • Perform end to end checks through the DDC controls system • Identify problems found in the DDC controls system and then identify them in Pulse
  • 10. Sequence of Operations • Review the original sequence of operations and understand how the system was supposed to be working. • Review the control systems to ensure that the basic principals were put in place from the original specifications: – schedules – reset schedules – set-points and control strategies • Use Pulse EMS software to help identify control strategies
  • 11. Finding Energy Anomalies in Pulse EMS Identifying loads
  • 12. Identified Problems Night set back-faulty temperature sensors
  • 13. Identified Problems Compressor taken out of service
  • 14. End to ends • Look for opportunities to optimize the programming and schedules • Check all inputs and outputs • Check set points
  • 15. Problems Found in the DDC System and Identified Through Pulse EMS • Examples of findings:  Bad temperature sensors -13.9  Temperatures sensors in manual  Bad calibration on outside air sensors  Outputs in manual  Schedules in manual  Duct leakage  Automatic reset set points in manual
  • 16. Problem
  • 17. Fixed
  • 18. Identified
  • 19. Other Examples
  • 20. Other Examples
  • 21. Key to Success • Staff buy in and coordination • Coaching from beginning to end • Understanding the systems • End to End checks • Using Pulse energy management software for identifying loads • Identifying areas that can be optimized • Lowering DDC password levels • Logging DDC changes
  • 22. Pulse Energy Management Software
  • 23. Pulse Energy Management Software
  • 24. Pulse Energy Management Software
  • 25. Pulse Energy Management Software
  • 26. Q&A
  • 27. Q&A
  • 28. Pulse Energy Management Software
  • 29. Q&A
  • 30. Q&A
  • 31. Start up Meeting • Ensured staff understand the objectives and guidelines of the Continuous Optimization Program • Ensured buy-in from staff • Trained staff on how to use Pulse Energy Management Software (EMS) to identify loads in facilities
  • 32. Q&A
  • 33. Vancouver Island Health Authority • 34 facilities, 392,734 sq meters across the island • Total electrical consumption within VIHA is 74,632,191 Kw/hrs for 2009, Gas consumption 425,000 Gj • 12 facilities in the COP program, 8 of which are being done internally
  • 34. Q&A
  • 35. Pulse Energy Management Software
  • 36. Q&A
  • 37. Q&A
  • 38. Start up Meeting • Ensured staff understand the objectives and guidelines of the Continuous Optimization Program • Ensured buy-in from staff • Trained staff on how to use Pulse Energy Management Software (EMS) to identify loads in facilities
  • 39. Q&A
  • 40. Vancouver Island Health Authority • 34 facilities, 392,734 sq meters across the island • Total electrical consumption within VIHA is 74,632,191 Kw/hrs for 2009, Gas consumption 425,000 Gj • 12 facilities in the COP program, 8 of which are being done internally
  • 41. Thank you!  Additional questions?  Contact Pulse Energy at: 1-877-331-0530 or at info@pulseenergy.com  Contact Nancy Myers at 1-250-739-5788 ext 54864 or at Nancy.Myers@viha.ca  Look for future and archived webinars on our website: www.pulseenergy.com/resources/webinars