CHAPTER 9. TRIAL STANDARD LEVELS

TABLE OF CONTENTS

9.1 INTRODUCTION ........................................................................................................... 9­1

9.2 GENERAL SERVICE FLUORESCENT LAMPS.......................................................... 9­1

9.2.1 Representative Product Classes ........................................................................... 9­1

9.2.2 Trial Standard Levels........................................................................................... 9­2

9.3 INCANDESCENT REFLECTOR LAMPS..................................................................... 9­4

9.3.1 Representative Product Classes ........................................................................... 9­4

9.3.2 Trial Standard Levels........................................................................................... 9­4

LIST OF TABLES

Table 9.1 Product Classes for GSFL........................................................................................... 9­2

Table 9.2 Trial Standard Levels for GSFL, Represented by Efficacy Levels (EL).................... 9­2

Table 9.3 Trial Standard Levels for GSFL, as Shown by Efficacy Values................................ 9­2

Table 9.4 Product Classes for IRL.............................................................................................. 9­4

Table 9.5 Trial Standard Levels for IRL, as Shown by Efficacy Levels (EL) ........................... 9­5

Table 9.6 Trial Standard Levels for IRL, as Shown by Efficacy Values.................................... 9­5

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CHAPTER 9. TRIAL STANDARD LEVELS

9.1 INTRODUCTION

The U.S. Department of Energy (DOE) generated national energy savings (NES) and net

present value (NPV) results based on trial standard levels (TSLs). The TSLs designate an

efficacy level (EL) for each product class. ELs are developed for each product class in the

engineering analysis. In this chapter, DOE is only presenting the TSLs of the product classes

that DOE analyzed directly (the “representative product classes”). Chapter 5 of the TSD and

section V.A of the Notice of Proposed Rulemaking (NOPR) discuss product classes in greater

detail. DOE then scaled the standards for the representative product classes to create standards

for other product classes that were not directly analyzed.

9.2 GENERAL SERVICE FLUORESCENT LAMPS

9.2.1 Representative Product Classes

The following lamps with a color correlated temperature (CCT) less than 4,500K

compose the five representative product classes for GSFL: (1) 4­foot medium bipin (MBP); (2)

8­foot single pin (SP) slimline; (3) 8­foot recessed double contact (RDC) high output (HO)

lamps; (4) 4­foot miniature bipin (MiniBP) T5 standard output (SO); and (5) 4­foot miniature

MiniBP T5 HO lamps. Details on how these product classes were selected can be found in

Chapter 5 of the TSD. Table 9.1 shows all GSFL product classes and designates those which

were considered to be representative.

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Table 9.1 Product Classes for GSFL

Lamp Type

For CCT ≤ 4,500K

Minimum Lamp Efficacy

lm/W*

For CCT > 4,500K

Minimum Lamp Efficacy

lm/W

4­foot medium bipin Representative product class Scaled from ≤4,500K

2­foot U­shaped Scaled from 4­foot medium bipin Scaled from ≤4,500K

8­foot single pin slimline Representative product class Scaled from ≤4,500K

8­foot recessed double contact HO Representative product class Scaled from ≤4,500K

4­foot T5 miniature bipin SO Representative product class Scaled from ≤ 4,500K

4­foot T5 miniature bipin HO Representative product class Scaled from ≤ 4,500K

* lm/W = lumens per watt

9.2.2 Trial Standard Levels

DOE developed TSLs that generally follow a trend of increasing efficacy by using higher

quality phosphors. The TSLs also represent a general move from higher wattage technologies to

lower wattage, lower diameter lamps with higher efficacies. DOE analyzes systems that meet

each efficacy level in the TSLs by pairing standard and reduced­wattage lamps featuring a

variety of design options with appropriate magnetic or electronic ballasts. As discussed in the

screening analysis (NOPR TSD chapter 4), DOE uses design options with highly emissive

electrode coatings, higher efficiency lamp fill gas composition, higher efficiency phosphors,

glass coatings, or lamp diameter to achieve higher efficacy levels. The TSLs for the five

representative GSFL product classes are shown in Table 9.2 and Table 9.3.

Table 9.2 Trial Standard Levels for GSFL, Represented by Efficacy Levels (EL)

Representative Product Class TSL 1 TSL 2 TSL 3 TSL 4 TSL 5

4­Foot Medium Bipin, CCT ≤ 4,500K EL1 EL2 EL3 EL4 EL5

8­Foot Single Pin Slimline, CCT ≤ 4,500K EL1 EL2 EL3 EL4 EL5

8­Foot RDC HO, CCT ≤ 4,500K EL1 EL2 EL3 EL4 EL5

4­Foot Miniature Bipin T5 SO, CCT ≤ 4,500K EL1 EL1 EL1 EL1 EL2

4­Foot Miniature Bipin T5 HO, CCT ≤ 4,500K EL1 EL1 EL1 EL1 EL1

Table 9.3 Trial Standard Levels for GSFL, as Shown by Efficacy Values

Representative Product Class TSL 1 TSL 2 TSL 3 TSL 4 TSL 5

4­Foot Medium Bipin, CCT ≤ 4,500K 78 81 84 89 94

8­Foot Single Pin Slimline, CCT ≤ 4,500K 89 93 95 97 100

8­Foot RDC HO, CCT ≤ 4,500K 83 87 88 92 95

4­Foot Miniature Bipin T5 SO, CCT ≤ 4,500K 103 103 103 103 108

4­Foot Miniature Bipin T5 HO, CCT ≤ 4,500K 89 89 89 89 89

TSL1, which would set energy conservation standards for GSFL to EL1 for all product

classes, would eliminate the 4­foot MBP T12 baselines, the 95W T12 8­foot RDC HO baseline,

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and the 75W T12 8­foot single pin slimline baseline from the market. In the 4­foot MBP product

class, this TSL could be met either with a 40W T12 lamp using improved 700­series or 800­

series phosphors, or with a 34W T12 lamp using a 700­series phosphor. A 4­foot MBP lamp

using only halophosphors would not be able to meet this TSL. The 75W 8­foot SP slimline T12

and 110W RDC HO lamps would need to use an 800­series rare earth phosphor to meet TSL1.

TSL1 also represents a level which would likely prevent the commercialization of T5 lamps

which halophosphor coating while allowing for 800­series 4­foot T5 MiniBP and 4­foot T5

MiniBP HO lamps that are currently commercially available to remain on the market.

TSL2 would set energy conservation standards for GSFL at EL2 for 4­foot MBP, 8­foot

SP slimline, and 8­foot RDC HO lamps. The 34W T12 4­foot MBP lamps would likely be

required to use 800­series rare earth phosphors to meet TSL2. For 40W T12 lamps, TSL2 is

expected to require a premium 800­series rare earth phosphor and is the maximum TSL that a

40W T12 would be able to meet. In the 8­foot SP slimline product class, TSL2 is expected to

require a premium 800­series rare earth phosphor for the 75W T12 and is the maximum TSL that

75W T12 would likely be able to meet. This standard level would eliminate the 60W T12

baseline and require a 700­series phosphor for this lamp. In the 8­foot RDC HO product class,

TSL2 would eliminate 110W T12 lamps and the 95W T12 baseline and would require rare earth

700­series phosphors for 95W T12 lamps. For T5s, TSL2 still represents the first efficacy level,

which would allow for 800­series 4­foot T5 MiniBP and 4­foot T5 MiniBP HO lamps to remain

on the market.

TSL3 would set energy conservation standards for GSFL at EL3 for 4­foot MBP, 8­foot

SP slimline, and 8­foot RDC HO lamps. In this product class, the 32W T8 baseline would be

eliminated from the market. To produce a TSL3­compliant 32W T8 lamp, manufacturers would

need to use an 800­series rare earth phosphor. The 34W T12 lamps would likely require an

improved 800­series rare earth phosphor mixture and possibly other design options, such as a

different gas fill or increased thickness of the bulb­wall phosphor. Only reduced­wattage (34W)

4­foot MBP T12 lamps are expected to meet this TSL. In the 8­foot SP slimline product class,

TSL3 would require the use of an 800­series 60W T12 lamp. This standard level is expected to

eliminate all 75W T12 lamps and require an improved 700­series phosphor for the 60W T12. In

the 8­foot RDC HO class, TSL3 requires 95W T12 lamps to shift to 800­series rare earth

phosphors. TSL3 also represents the first efficacy level for 4­foot T5 MiniBP and 4­foot T5

MiniBP HO lamps, retaining 800­series versions of those lamps on the market.

TSL4, which would set energy conservation standards for GSFL at EL4 for 4­foot MBP,

8­foot SP slimline, and 8­foot RDC HO, is expected to eliminate 4,100K T12 lamps from the

marketplace. TSL4 is also expected to raise the efficacy of all full­wattage T8 lamps above the

baselines for the aforementioned product classes. In the 4­foot MBP product class, TSL4 could

be met by improved 800­series full­wattage T8 lamps, or by 800­series 30W and 25W T8 lamps.

For the 8­foot SP slimline product class. 59W T8 lamps would likely need to use an 800­series

rare earth phosphor to meet TSL4. TSL4, while expected to eliminate 8­foot T12 RDC HO

lamps from the market, would require an improved 700­series mixture to be used in T8 lamps for

this product class. TSL4 also represents the first efficacy level for 4­foot T5 MiniBP and 4­foot

T5 MiniBP HO lamps, retaining 800­series T5 lamps on the market.

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TSL5 represents the max­tech EL for all GSFL product classes. T12 lamps and 700­

series T8 lamps are expected to not be able to meet this level. In the 4­foot MBP and 8­foot SP

slimline product class, T8 lamps would need to have a premium 800­series rare earth phosphor

coating to meet TSL5. TSL5 could also be met by the 28W reduced­wattage 4­foot MBP T8

lamp and the 57W and 55W reduced­wattage 8­foot SP slimline T8 lamps. TSL5 would require

movement 800­series T8 lamps in the 8­foot RDC HO product class. For the 4­foot T5 MiniBP

SO product class, a standard­wattage (28W) and reduced­wattage (26W) T5 with an improved

800­series phosphor would need to be used in order to meet TSL5. Because DOE created only

one efficacy level for the 4­foot T5 MiniBP HO lamps, TSL5 would set energy conservation

standards 4­foot T5 MiniBP HO lamps at EL1 and allow 800­series T5 HO lamps to remain on

the market.

9.3 INCANDESCENT REFLECTOR LAMPS

9.3.1 Representative Product Classes

DOE selected standard­spectrum IRL with a diameter greater than or equal to 2.5 inches

and voltage less than 125 volts to be a representative product class for IRL. Representative

product classes are discussed in more detail in Chapter 5 of the TSD. Table 9.4 lists the IRL

product classes.

Table 9.4 Product Classes for IRL

Lamp Type Diameter Voltage

> 2.5 inches ≥ 125

Standard Spectrum

< 125 (representative)

≤ 2.5 inches ≥ 125

< 125

> 2.5 inches ≥ 125

Modified Spectrum

< 125

≤ 2.5 inches ≥ 125

< 125

9.3.2 Trial Standard Levels

As discussed in the screening analysis (NOPR TSD chapter 4), DOE uses design options

with higher­temperature operation, thinner filaments, efficient filament coiling, efficient filament

orientation, higher­efficiency inert fill gas, tungsten halogen lamps, higher pressure tungsten

halogen lamps, infrared glass coatings, higher­efficiency reflector coatings, and efficient

filament placing to achieve higher efficacy levels. The efficacy levels for the representative IRL

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product class and the corresponding efficacy values are shown in Table 9.5 and Table 9.6. Each

TSL is comprised of the same numbered efficacy level for all eight IRL product classes. For

example, TSL1 contains EL1 for all eight product classes.

Table 9.5 Trial Standard Levels for IRL, as Shown by Efficacy Levels (EL)

Trial Standard Level (lm/W)*

IRL Product Class TSL1 TSL2 TSL3 TSL4 TSL5

Standard Spectrum, Diameter > 2.5in,

Voltage < 125 EL1 EL2 EL3 EL4 EL5

*P is the rated wattage of the lamp.

Table 9.6 Trial Standard Levels for IRL, as Shown by Efficacy Values

Trial Standard Level (lm/W)*

IRL Product Class TSL1 TSL2 TSL3 TSL4 TSL5

Standard Spectrum, Diameter > 2.5in,

Voltage < 125 4.6P0.27 4.8P0.27 5.5P0.27 6.2P0.27 6.9P0.27

*P is the rated wattage of the lamp.

TSL1 considers moving all reflector lamps to a level that could be achieved with

improved efficacy halogen lamps using xenon, a higher efficacy inert fill gas.

TSL2 considers a level that could be achieved by a halogen capsule with a infrared

reflective coating and a lamp lifetime of 6,000 hours. An improved halogen lamp that utilizes a

silver reflective coating, based on an improved halogen lamp with a lifetime of 3,000 hours

could also meet this level.

TSL3 considers a level that could be achieved by a halogen capsule with an infrared

reflective coating and a lamp lifetime of 3,000 hours. Decreasing the lamp lifetime from 6,000

to 3,000 hours effectively improves the efficiency of the tungsten filament.

TSL4 considers a level that could be achieved by a 4,000­hour­lifetime improved halogen

infrared lamp. Improvements in the halogen infrared lamp may include the use of a doubleended halogen infrared burner, higher­efficiency inert fill gas, or more­efficient filament

orientation.

TSL5 considers a level that could be achieved with a 4,200­hour­lifetime halogen

infrared lamp (even further improved). These further improvements include an improved

reflector, improved IR coating, or filament design that produces higher temperature operation.

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