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Any standards for measuring emissivity and reflectance?
3

Any standards for measuring emissivity and reflectance?

Any standards for measuring emissivity and reflectance?

(OP)
Can anyone point me to specs and/or devices that cover the measurement of the optical properties of emissivity and solar reflectance of surfaces?

Thanks for anything you can suggest!

Tunalover

RE: Any standards for measuring emissivity and reflectance?

2
The Cool Roof Rating Council (CRRC) has a Product Rating Program, which lists the applicable test methods for testing these radiative properties.  Their web address is:  http://www.coolroofs.org.

For Solar Reflectance you can use either ASTM E903 or ASTM E1918.  E903 is good for any roof type unless it is variegated.  E1918 is used for variegated roofing products.

For testing Infrared Emittance you can use either ASTM C1371 or ASTM E408.

Dan Walker
dwalker@mbma.com  

RE: Any standards for measuring emissivity and reflectance?

(OP)
Dan-

Actually I'm looking for a test method that can be used for ANY material, not just roofing.  Is there anything about ASTM E903, ASTM E1918, ASTM C1371, and ASTM E408 that precludes their use on materials other than roofing?  My application is the design of outdoor electronic equipment.

Thanks,
Bruce

RE: Any standards for measuring emissivity and reflectance?

(OP)
TVP-
Thanks for the link.  I saved it and will pursue this further.
Regards,
Bruce

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