Energy Efficiency

04/18/23

LightingLighting

Akrem Awad

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Three Most Important Areas in Energy Efficient Lighting

Meet target lightMeet target lightlevelslevels

Meet target lightMeet target lightlevelslevels

Efficiently produceEfficiently produceand deliver lightand deliver light

Efficiently produceEfficiently produceand deliver lightand deliver light

AutomaticallyAutomaticallycontrol lightingcontrol lighting

operationoperation

AutomaticallyAutomaticallycontrol lightingcontrol lighting

operationoperation

Visual Task

F O O T C A N D L E SF O O T C A N D L E S

WATTSWATTS

LUMENSLUMENS

Visual Task

Most Important Slide in Today’s Seminar!04/18/23 2

Energy Efficiency

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1. Introduction

2. Types of lighting systems

3. Energy efficiency and other considerations

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• Lighting energy consumption 20-45% in commercial buildings

• Significant energy savings can be realized with a minimal capital investment and common sense

• For example, replacing high pressure sodium Fixtures with LED Fixtures (JESSUP)(JESSUP)

Background

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Quality of Illumination

Quality of illumination may affect worker productivity: Glare. Too bright. Uniformity of illumination. Color rendition. Ability to see colors properly.

Scale 0 to 100 (100 is best) Color Temperature. Warm to Cool.

Measured in degrees Kelvin (K). 3000 is warm (yellowish); 5000 iscool or “daylight”.

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Energy Efficiency1. Introduction

2. Types of lighting systems

3. Energy efficiency and other considerations

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Types of Lighting Systems High pressure sodium lamps

Low pressure sodium lamps

Mercury vapor

Metal halide

LED lamps (light-Emitting Diode)

Incandescent lamps

Tungsten Halogen Lamps

Fluorescent lamps

High Intensity Discharge(HID) lamps

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Ballasts

Old type ballasts were electromagnetic.

New ballasts are electronic Lighter, less noisy, no lamp flicker, dimming capability.

Maximize your energy savings by selecting electronic ballasts Maximize your energy savings by selecting electronic ballasts with Low ballast factor that provides target illuminance. with Low ballast factor that provides target illuminance.

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Types of Lighting Controls

Occupancy SensorsPhoto SensorsLighting Control

Systems

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LED Lamps Newest type of energy efficient lamp

Two types: • red-blue-green array• phosphor-coated blue lamp

Emit visible light in a very narrow spectrum and can produce “white light”

Used in variety of applications over vast

spectrum of spaces

Technology is rapidly progressing

Significant energy savings: 82 – 93%

Longest lamp life: 40,000 – 100,000 hrs

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LED vs. Fluorescent Lamp

  LEDPopular T8 Brand

Fluorescent

Watt Rating, typical B.F. = 0.8

22W 34W

Lumens, initial Equivalent 2850

CRI 85 85

Color Temperature 5000K 5000K

Life Expectancy   10 years  20000 hours 16000 hours

Light output at 0° C 20%

increase 50% decrease

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Energy Efficiency1. Introduction

2. Types of lighting systems

3. Energy efficiency and other considerations

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Jessup Warehouse LED retrofit

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HVAC Savving

Qty Fixture Description Fixt. Description $ $ KWh $ $ 0.1 $ Year %

196 250WATT HPS150W-LED INDUSTRIAL BAY

LIGHT$226 $44,290 104,429 $10,443 $14,700 $1,044 $26,187 1.69 59.1%

467 8FT - T32 83WATT FL8FT LED STRIP 6000- LUMEN 4000K & Occupancy Sensors

$268 $124,937 63,886 $6,389 $31,756 $639 $38,783 3.22 31.0%

663 $169,227 168,314 $16,831 $46,456 $1,683 $64,971 2.60 38.4%

Estimated Total Rebate

Total 1st

year saving

Payback ROITotal Fixture replacement

Pre Installation Post Installation Total Cost SavingsUnit SellEnergy

SAVINGS

Jessup Warehouse LED retrofit

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Simple payback is the number of years it will take for the savings to pay for the initial cost.[ Initial Cost / Annual Savings ]

ROI "return on investment“ is the rate of return (percentage) on an investment over a period (years).[ 1 / Simple Payback ]

Schaefer Tower Garage LED retrofit

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Schaefer Tower Garage LED retrofit

Qty Fixture DescriptionFixt.

Description$ $ KWh $ $ 0.1 $ Year %

115 2 X F96T8 78W LED $368 $42,320 42,311 $4,231 $6,900 $423 $11,554 3.66 27.3%

115 $42,320 42,311 $4,231 $6,900 $423 $11,554 3.66 27.3%

SavingsEnergy

SAVINGS

Estimated Total

Rebate

Total 1st

year saving

Payback ROIHVAC

SavvingTotal Fixture replacement

Pre InstallationPost

InstallationUnit Sell Total Cost

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Simple payback is the number of years it will take for the savings to pay for the initial cost.[ Initial Cost / Annual Savings ]

ROI "return on investment“ is the rate of return (percentage) on an investment over a period (years).[ 1 / Simple Payback ]

Governor office at Schaefer Tower LED retrofit

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Governor office at Schaefer Tower LED retrofit

Qty Fixture Description Fixt. Description $ $ KWh $ $ 0.1 $ Year %

24 4 X 32W T8 2x4 High def LED $209 $5,016 3,370 $337 $1,800 $0 $2,137 2.35 42.6%

46 8'" downlight 8" Dpwn light LED $255 $11,730 12,917 $1,292 $2,760 $129 $4,181 2.81 35.6%

70 $16,746 12,917 $1,292 $2,760 $129 $4,181 4.01 25.0%

Total 1st

year saving

Payback ROITotal Fixture replacement

Pre Installation Post Installation Unit Sell Total Cost SavingsEnergy

SAVINGS

Estimated Total

Rebate

HVAC Savving

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Simple payback is the number of years it will take for the savings to pay for the initial cost.[ Initial Cost / Annual Savings ]

ROI "return on investment“ is the rate of return (percentage) on an investment over a period (years).[ 1 / Simple Payback ]

Improved Color Rendition/Visibility in Space

Longer Lamp Life

Less Maintenance (Normally a result of longer lamp life)

Adjust to target light levels

Improved Controls

HVAC Savings – Typically (1% to 2%) above lighting savings for cooled spaces

Incentive from Utility Rebates

Other Benefits

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Hazardous Waste Disposal

Under current federal law, mercury-containing lamps (fluorescent, HID) may be hazardous waste.

Lamps containing mercury that fail the Toxic Characteristic Leaching Procedure (TCLP) test must be recycled!

EPA encourages responsible disposal practices to limit the release of mercury into the environment.

TYPICAL MERCURY CONTENT OF VARIOUS LAMPS250 watt Metal Halide lamp 38 mg250 watt High Pressure Sodium lamp 15 mgTypical T8 Fluorescent Tube 4-5 mgTypical Compact Fluorescent (CFL) 4-5 mg

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Fluorescent Lamp/Ballast Change-out vs. New Fixture “Rules of Thumb”

Install new fixtures when:•Existing fixtures are over 20 years old•Lamp holders are worn out•Multiple components are failing•Design requires change in fixture type

Retrofit existing fixtures with lamps & ballasts when:•Existing fixtures are less than 20 years old•Lamp holders and other components are still good•Budget is very tight•Expensive/Difficult/Environmental Conditions

Present (i.e. asbestos or excessive piping and ducts in ceiling, etc.)

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Energy Efficiency: Lighting

THANK YOU THANK YOU

FOR YOUR FOR YOUR

ATTENTIONATTENTION

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