Retro Commissioning

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VISN 18 Provide Retro-Commissioning (RCx) Services
DAV Energy Solutions provided retro-commissioning services for seven (7) VISN 18 Medical Centers for the purpose of establishing and altering Heating, Ventilation, Air Conditioning (HVAC) and related energy-using systems to proper operational capabilities. The main objectives of the RCx process were to:VISN retro commission

  • Identify and prioritize operational and maintenance enhancements in major building systems that result in improvements in infection control, energy efficiency, occupant comfort, and indoor air quality.
  • Evaluate design adequacy of major building systems in ensuring infection control is achieved in critical patient care areas.
  • Evaluate system performance in relation to design specifications and characterize deviations.
  • Optimize control systems through calibration of sensors and modifications to set points and sequences of operation using information obtained through meters, trend logs, and functional testing of equipment.
  • Evaluate the ‘Preventive Maintenance Program (PMP)’ and assess its effectiveness in maintaining operating systems. Provide the necessary corrections to improve PMP and to train essential staff in its application.
  • Establish a system to benchmark current energy consumption so that future energy needs can be realistically assessed and then documented.
  • Identify options and cost estimates for energy savings throughout the campus.
  • Identify the Operations & Maintenance (O&M) personnel training needs to improve the skills/abilities to respond effectively to changing needs of the building/occupants.

DAV Energy and its key subcontractor, Dewberry provided the following products:

  • RCx Plan
  • Facility Information and Equipment Documents
  • Building Occupant Interviews & Goals
  • Facility Performance Analysis & Performance Baseline
  • Systems Diagnostic Monitoring Plan Report
  • Systems Test Procedures and Testing Plan and Report
  • Simple Repair Report Summary
  • Minor and Major Recommendations Report
  • Final RCx Report
  • Equipment List

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VISN 20 Alaska – Provide Retro-commissioning Services

DAV Energy Solutions provided retro-commissioning services for the recently constructed 190,817 square foot Anchorage Alaska Outpatient Clinic for the purpose of establishing and altering Heating, Ventilation, Air Conditioning (HVAC) and related energy-using systems to proper operational capabilities. The main objectives of the RCx process were similar to as described for the VISN 18 RCx project. The RCx process used a systematic and documented process that identified operational and maintenance improvements to bring the site up to the design intentions of its current usage.

Retro 2

Actionable Energy Conservation Measures and Corrective Actions:  DAV Energy wrote all of the RCx Plans and Reports, thoroughly detailing the technical procedures, measurements and results of the RCx process. A small sample of recommended Corrective Actions and ECMs included:

  • Rescheduling of Supply and Return Fans operation.
  • Replace Pre-heat coils on Air Handlers.
  • Use multiple thermostats to balance temperatures
  • Reduce load on Glycol loop
  • Changing coil capacities
  • Investigate compressed air system for leaks
  • Install ambient lighting sensor

Recommendations made are expected to have a payback period of less than a year and will save an estimated 260,476 kWh and $27,350 every year.

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VISN 22 Provide Retro-Commissioning (RCx) Services

DAV Energy Solutions provided retro-commissioning services for six (6) VA Desert Pacific Health Care Network Medical Centers for the purpose of establishing and altering Heating, Ventilation, Air Conditioning (HVAC) and related energy-using systems to proper operational capabilities. The main objectives of the RCx process were to:

  • Identify and prioritize operational and maintenance enhancements in major building systems that result in improvements in infection control, energy efficiency, occupant comfort, and indoor air quality.
  • Evaluate design adequacy of major building systems in ensuring infection control is achieved in critical patient care areas.Retro
  • Evaluate system performance in relation to design specifications and characterize deviations.
  • Optimize control systems through calibration of sensors and modifications to set points and sequences of operation using information obtained through meters, trend logs, and functional testing of equipment.
  • Evaluate the ‘Preventive Maintenance Program (PMP)’ and assess its effectiveness in maintaining operating systems. Provide the necessary corrections to improve PMP and to train essential staff in its application.
  • Establish a system to benchmark current energy consumption so that future energy needs can be realistically assessed and then documented.
  • Identify options and cost estimates for energy savings throughout the campus.
  • Identify the Operations & Maintenance (O&M) personnel training needs to improve the skills/abilities to respond effectively to changing needs of the building/occupants.

DAV Energy and its key subcontractors, Dewberry and Abraxas Energy provided the following products:

    • RCx Plan
    • Facility Information and Equipment Documents
    • Building Occupant Interviews & Goals
    • Facility Performance Analysis & Performance Baseline
    • Systems Diagnostic Monitoring Plan
    • Systems Diagnostic Monitoring Report
    • Systems Test Procedures and Testing Plan
    • Systems Testing Report
    • Simple Repair Report Summary
    • Minor and Major Recommendations Report
    • Final RCx Report