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Commercial Building Energy Auditing Procedures

Module 1

Part B

CreateEnergy.org

This material is based upon work supported by the National Science award 2201631. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

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Module 1 Learning Outcomes

  • Define the Levels of Effort for Commercial Building Energy Audits
  • Calculate EUI and Creating an Energy Benchmark
  • Identify Data Collection and Information required for an audit
  • Determine End Use Allocation

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Levels of Effort

  • Level 1 – Walk Through Survey

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  • Level 2 – Energy Survey

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  • Level 3 – Detailed Analysis

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  • Targeted Audits – Detailed but Limited Scope

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Level 1 Energy Audit

  • Level 1 – Walk Through Survey
    • Includes preliminary energy analysis using utility data (ECI and EUI determination)
    • Conduct a “walk-thru” survey
    • Meet with Owner
    • Space function analysis
    • Identify low-cost/no-cost or O&M improvements
    • Estimate approximate savings
    • Identify potential capital improvements

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Level 2 Energy Audit

  • Level 2 – Energy Survey and Engineering Analysis

Includes all information from the utility data analysis and Level 1 plus:

Review and identify of all major energy using systems

Electrical (lighting, power)

Mechanical (HVAC, refrigeration)

Identify other systems

Domestic Hot Water

Kitchen, laundry, food preparation

Pools, spas, exercise

Large gathering

Plug loads or process loads

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Level 2 Energy Audit

  • Level 2 – Energy Survey and Engineering Analysis

Operations and Maintenance

Operating setpoints

Maintenance procedures and practices

Scheduling

See ASHRAE Procedures pages 98 – 137

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Energy Efficiency Measures (EEM)

Look for Low-Cost-No Cost measures first

Scheduling

Optimization of HVAC Controls

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Level 2 Energy Audit

  • Level 2 – Energy Survey and Engineering Analysis

Energy Efficiency Measures (EEM)

Low-Cost/No Cost Energy Savings

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Scheduling

Sensor Error

Outside Air Use

Simultaneous Heating and Cooling

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Level 2 Energy Audit

  • Level 2 – Energy Survey and Engineering Analysis

Energy Efficiency Measures (EEM)

Low-Cost/No Cost Energy Savings

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Identify Other Energy Efficiency Measures

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Calculating Energy Savings

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Level 3 Energy Audit

  • Level 3 – Detailed Analysis

Includes work in Levels 1 and 2

Detailed EEM energy savings

Obtain pricing information from Contactors

Complete an LCCA for each measure

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Targeted Energy Audit

  • Targeted Audits

Specific system or end use

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Energy End Uses

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Energy End Uses

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Benchmarking

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  • A benchmark is a standard by which something can be measured or judged.
  • Once you have calculated your building’s EUI, you can use it to benchmark your building. Benchmarking allows you to compare the energy performance against similar facilities or an established level of performance.

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  • In order to benchmark it is very important to compare apples with apples. It will do you no good to benchmark a building in California against data based on a building in Colorado or Oregon.
  • https://www.energystar.gov/buildings

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14 of 14

Commercial Building Energy Auditing Procedures

Module 1

Part B

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END OF VIDEO

CreateEnergy.org

This material is based upon work supported by the National Science award 2201631. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

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