J.B. Speed School of Engineering University of Louisville KEEPS Energy Management Toolkit Step 2: Assess Performance & Opportunities Toolkit 2F: Lighting

J.B. Speed School of Engineering University of Louisville

KEEPS Energy Management ToolkitStep 2: Assess Performance & OpportunitiesToolkit 2F: Lighting

Kentucky Energy Efficiency Program for Schools

KEEPS EnergyManagement Toolkit

Step 2

Assess Performance & Opportunities

Toolkit 2F

Lighting

KPPC Kentucky’s Resource Center for Environmental Sustainability

KEEPS Energy Management ToolkitToolkit 2F: Lighting

KEEPSEnergyManagementToolkit

Toolkit 2FLighting

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7-Step Energy Management Process

1. Make the Commitment

2. Assess Performance and Opportunities

3. Set Performance Goals

4. Create an Action Plan

5. Implement the Action Plan

6. Evaluate Progress

7. Recognize Achievements

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Lighting Assessment Overview

Importance

Lighting Assessment Process

Resources• KEEPS Lighting Tool

Application to KEEPS Assessment Report

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5KPPC Kentucky’s Resource Center for Environmental Sustainability

Why Perform a Lighting Assessment?

• Better understanding of lighting systems and impact on energy use

• Good investment with an average simple payback of 2 – 6 years

• Save 30 – 50% in lighting energy and improve light levels

• Lighting consumes an average of 14% of the energy at a K-12 facility


Recommended Tools for Performing a Lighting AssessmentLight Meter – measure light levels

Ballast Discriminator – determine existing lighting system’s ballasts type

KEEPS On-site Energy Assessment Forms – log site assessment data• Lighting Fixtures• Lighting Fixture Nomenclature

KEEPS Lighting Tool – identify energy savings from retrofitting existing lighting systems


Lighting Assessment Process

Step 1. Become familiar with light fixture nomenclature

Step 2. Understand ballast discriminators and light level meters

Step 3. Conduct site assessment

Step 4. Enter data into the KEEPS Lighting Tool

Step 5. Evaluate results


Step 1: Light Fixture Nomenclature

• Read the “INSTRUCTIONS” tab and “FIXTURE NOMENCLATURE” tab in the KEEPS Lighting Tool

• Print the Fixture Nomenclature tables for easy reference during the lighting site assessment


Step 2: Using a Ballast Discriminator

1. Hold the ballast discriminator up to the fixture

2. Press the button

3. A red light indicates the ballast is magnetic and the corresponding lamps are T12

4. A green light indicates the ballast is electronic and the corresponding lamps are T8


Step 2: Using a Light Level Meter

1. Adjust the meter to display foot candles

2. Hold the meter away from the body and at waist height

11KPPC Kentucky’s Resource Center for Environmental Sustainability 11

Appropriate Light Levels for Schools

• The State of Kentucky requires the light levels found in the table below

• Delamping or retrofitting with more light should be considered if light levels grossly deviate from the levels listed in the table


Facts about Light Level Readings

• Think of light level readings as average maintained foot candles while the students are present

• Light levels can vary by over 100% depending on the amount of sunlight entering the classroom

• The lighting system may have the capability of producing the correct light levels; however, the lamps may be old (lumen depreciation) or there could be a significant amount of dirt or yellowing of the lens


Step 3: Conduct Site Assessment

• Walk the school and complete the KEEPS On-site Energy Assessment Form for Lighting with the following info:• Location of fixture

• Type of existing fixture (using the code)

• Quantity

• Estimated hours the lights are on in one year

• Note areas that do not have appropriate light levels


Step 4: Enter Site Assessment Data into KEEPS Lighting Tool

• Enter the cost/kWh and average demand (kW) cost/kW. Refer to the KEEPS Utility Bill Analysis Tool for this information.

• Reference the Instructions tab for step-by-step tips using the KEEPS Lighting Tool

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Step 5: Evaluate Results

• The KEEPS Lighting Tool provides estimated costs and savings for retrofitting the lighting system

• Energy Managers can use this information to help develop an Energy Action Plan


Optional Cost Customization

• The default material and labor cost estimations can be changed to fit the needs of the energy manager


Resources

Available for download from the KEEPS Toolkit Library• http://www.kppc.org/KEEPS

http://www.kppc.org/KEEPS

J.B. Speed School of Engineering University of Louisville

End of Presentation

(502) 852-0965

www.kppc.org/KEEPS

Kentucky Energy Efficiency Program for Schools

KEEPS is funded by the American Recovery and Reinvestment Act through the combined efforts of the Kentucky Department for Energy Development and Independence, the U.S. Department of Energy and KPPC.

Documents

J.B. Speed School of Engineering University of Louisville KEEPS Energy Management Toolkit Step 2: Assess Performance & Opportunities Toolkit 2F: Lighting