ASTM E2141-02
(Test Method)Standard Test Methods for Assessing the Durability of Absorptive Electrochromic Coatings on Sealed Insulating Glass Units
Standard Test Methods for Assessing the Durability of Absorptive Electrochromic Coatings on Sealed Insulating Glass Units
SCOPE
1.1 The tests described are methods for the accelerated aging and monitoring of the time-dependent performance of electrochromic windows. Cross sections of typical electrochromic windows are shown in which devices have four or five-layers of coatings that include the two or three active layers sandwiched between transparent conducting electrodes (TCEs, see Section 3).
1.2 The test methods are applicable only for multilayered (two or more coatings between the TCEs) absorptive electrochromic coatings on sealed insulating glass (IG) units fabricated for vision glass (superstrate and substrate) areas for use in buildings, such as sliding doors, windows, skylights, and exterior wall systems. The multilayers used for electrochromically changing the optical properties may be inorganic or organic materials between the superstrate and substrate.
1.3 The electrochromic coatings used in this test method are exposed to solar radiation and are deployed to control the amount of radiation by absorption and reflection and thus, limit the solar heat gain and amount of solar radiation that is transmitted into the building.
1.4 The test methods are not applicable to other chromogenic devices, e.g., photochromic and thermochromic devices.
1.5 The test methods are not applicable to electrochromic devices consisting of three layers of coatings including the two transparent conducting electrodes (see Section 3 ).
1.6 The test methods are not applicable to electrochromic windows that are constructed from superstrate or substrate materials other than glass.
1.7 The test methods referenced herein are laboratory tests conducted under specified conditions. These tests are intended to simulate and, in some cases, to also accelerate actual in-service use of the electrochromic windows. Results from these tests cannot be used to predict the performance with time of in-service units unless actual corresponding in-service tests have been conducted and appropriate analyses have been conducted to show how performance can be predicted from the accelerated aging tests.
1.8 The values stated in metric (SI) units are to be regarded as the standard.
1.9 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation:E2141–02
Standard Test Methods for
Assessing the Durability of Absorptive Electrochromic
1
Coatings on Sealed Insulating Glass Units
This standard is issued under the fixed designation E 2141; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope have been conducted and appropriate analyses have been
conducted to show how performance can be predicted from the
1.1 The tests described are methods for the accelerated
accelerated aging tests.
aging and monitoring of the time-dependent performance of
1.8 The values stated in metric (SI) units are to be regarded
electrochromic windows. Cross sections of typical electrochro-
2
as the standard.
mic windows are shown in which devices have four or
1.9 This standard does not purport to address all of the
five-layers of coatings that include the two or three active
safety concerns, if any, associated with its use. It is the
layers sandwiched between transparent conducting electrodes
responsibility of the user of this standard to establish appro-
(TCEs, see Section 3).
priate safety and health practices and determine the applica-
1.2 The test methods are applicable only for multilayered
bility of regulatory limitations prior to use.
(two or more coatings between the TCEs) absorptive electro-
chromic coatings on sealed insulating glass (IG) units fabri-
2. Referenced Documents
cated for vision glass (superstrate and substrate) areas for use
2.1 ASTM Standards:
in buildings, such as sliding doors, windows, skylights, and
3
C 168 Terminology Relating to Building Materials
exterior wall systems. The multilayers used for electrochromi-
C 1199 Test Method for Measuring the Steady State Ther-
cally changing the optical properties may be inorganic or
malTransmittance of Fenestration Systems Using Hot Box
organic materials between the superstrate and substrate.
3
Methods
1.3 The electrochromic coatings used in this test method are
E 122 Practice for Choice of Sample Size to Estimate a
exposed to solar radiation and are deployed to control the
4
Measure of Quality for a Lot or Process
amountofradiationbyabsorptionandreflectionandthus,limit
E 632 Practice toAid Prediction of Service Life of Building
the solar heat gain and amount of solar radiation that is
3
Components and Materials
transmitted into the building.
E 773 Test Method for Accelerated Weathering of Sealed
1.4 The test methods are not applicable to other chromoge-
3
Insulating Glass Units
nic devices, e.g., photochromic and thermochromic devices.
E 774 Specification for the Classification of the Durability
1.5 The test methods are not applicable to electrochromic
3
of Sealed Insulating Glass Units
devices consisting of three layers of coatings including the two
E 891 Tables for Terrestrial Direct Normal Solar Spectral
transparent conducting electrodes (see Section 3).
3
Irradiance for Air Mass 1.5
1.6 The test methods are not applicable to electrochromic
E 892 Tables for Terrestrial Solar Spectral Irradiance at Air
windows that are constructed from superstrate or substrate
3
Mass 1.5 for a 37º Tilted Surface
materials other than glass.
E 903 Test Method for SolarAbsorptance, Reflectance, and
1.7 The test methods referenced herein are laboratory tests
3
Transmittance of Materials Using Integrating Spheres
conducted under specified conditions. These tests are intended
E 1423 Practice for Determining the Steady State Thermal
to simulate and, in some cases, to also accelerate actual
3
Transmittance of Fenestration Systems
in-service use of the electrochromic windows. Results from
3
E 1887 Test Method for Fog Determination
these tests cannot be used to predict the performance with time
E 2094 Practice for Evaluating the Service Lifetime of
of in-service units unless actual corresponding in-service tests
3
Chromogenic Glazings
G 113 Terminology Relating to Natural and Artificial
3
1
Weathering Tests of Non- Metallic Materials
This test method is under the jurisdiction of ASTM Committee E06 on
Performance of Building Constructions and is the direct responsibility of Subcom-
G 151 Practice for Exposing Nonmetallic Materials in ac-
3
mittee E06.22 on Durability of Building Constructions.
celerated Test Devices that Use Laboratory Light Source
Current edition approved Oct. 10, 2002. Published November 2002. Originally
published as E 2141–01. Last previous edition E 2141–01
2
A.W.CzandernaandC.M.Lampert,“EvaluationCriteriaandTestMethodsfor
3
Electrochromic Windows,” SERI/PR-255-3537 (July 1990), Golden, CO: Solar Annual Book of ASTM Standards, Vol 04.07.
4
Energy Research Institute. Annual Book of ASTM Standards,
...
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