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Energy Efficient Operations: Giving facility operators the tools to optimize building performance The B3 Energy Efficient Operations Manual. Garrett Mosiman Center for Sustainable Building Research University of Minnesota College of Design www.csbr.umn.edu [email protected]

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slide1

Energy Efficient Operations: Giving facility operators the tools

to optimize building performance

The B3 Energy Efficient Operations Manual

Garrett Mosiman

Center for Sustainable Building Research

University of Minnesota College of Design

www.csbr.umn.edu

[email protected]

Based on the work and observations of

Peter Herzog

Herzog / Wheeler Associates

2013 AEE / ASHRAE / USGBC

Energy Expo

October 2, 2013

goal of energy efficient operation
Goal of Energy-Efficient Operation

To ensure that each significant energy-consuming device uses only as much energy as necessary to perform its intended function.

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The Premise:

A building is operating efficiently if each significant energy-consuming device is using only as much energy as is necessary to perform its intended function.

In the vast majority of buildings, energy-consuming devices are essentially unmanaged. Facilities managers rely on “signals” like lack of occupant complaints and premature equipment failure as proxies for success. While these signals are critical to success in building operation, they do not ensure that the significant energy-consuming devices are operating efficiently.

By instituting a system of simple, nontechnical, routine checks on significant energy users, energy savings of 20% - 25% can be realized.

typical operation and maintenance goals and activities
Typical Operation and Maintenance Goals and Activities
  • Provide a Comfortable Environment
  • Maintain a Safe Environment
  • Avoid Premature Failure
  • Maintain Equipment Capacity
  • Maintain Energy-Efficient Operation

Achieving each goal requires the following:

  • Management commitment
  • Measurable accountabilities
  • An established process
  • Knowledge & training
  • Resources, tools and time
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Examples of excess energy consumptionundetected by typical operation and maintenance practices(Why we need a manual)
slide14

Goal of Energy-Efficient Operation

To ensure that each significant energy-consuming device uses only as much energy as necessary to perform its intended function.

Energy-Efficient Operation Process

1. Identify candidates for Energy-Efficient Operation

* High annual consumption of energy units and dollars

* Possible excess energy use

* Excess energy use could go undetected by typical operating practices

2. Perform periodic verification of Energy-Efficient Operation

* Measure actual performance

* Compare actual to required performance

3. Act to correct inefficient operation

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Nature of the Task:

Timer-controlled devices

Negotiate the minimum-acceptable operating schedule with the occupants served by the device or system

Ensure that the agreed schedule is implemented in the control system

Verify that the timer-controlled device switches “off” when signaled by the control

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Nature of the Task:

Mixed Air Temperature

Compare the current Mixed Air Temperature (MAT) to its predicted value. This value changes relative to outdoor air temperature.

energy efficient operation manual sb 2030
Energy Efficient Operation Manual – SB 2030

Typical Monitoring of Energy Efficiency:

This year’s energy use is down (or up) from last year’s energy use by _____________

Ideal Monitoring of Energy Efficiency:

By following our “Energy-Efficient Operation Manual”, we routinely verify that each significant energy consumer is using only as much energy as is necessary to perform its intended function.

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B3 Energy-Efficient Operation Manual Status

  • Current manuals may be created with available Excel templates for the first three modules (timer controlled lights, timer controlled AHUs, Mixed Air Temperature).
  • A website is under development that will facilitate three tasks for these three modules:
  • Creation of custom manuals (commissioning agent / design engineer)
  • Prompting system and guidance for task completion (building staff)
  • Monitoring and feedback for management (facilities manager)
  • Work is underway to develop additional modules (plug loads, daylight-controlled lights, hydronic heating, etc.), and a system to select appropriate modules for a particular building
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Thanks!

Garrett Mosiman

www.csbr.umn.edu

[email protected]

2013 AEE / ASHRAE / USGBC

Energy Expo

October 2, 2013

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