ASTM WK71343

    Revision of E1918 - 16 Standard Test Method for Measuring Solar Reflectance of Horizontal and Low-Sloped Surfaces in the Field

    (What is a Work Item?)

    Active Standard: E1918 - 16

    Developed by Subcommittee: D08.18 | Committee D08 | Contact Staff Manager



    WK71343


    Keywords

    pyranometer; solar energy; solar reflectance;;

    Rationale

    An E1918A methodology is being proposed as an annex to ASTM E1918 because it offers the advantage of a smaller sample size. ASTM E1918 requires a 4-meter by 4-meter (about 13 feet by 13 feet) sample size (or 4-meter diameter, if the sample is circular). The E1918A methodology sample size is more manageable at 1-meter by 1-meter (or 1-meter diameter if round). The E1918A methodology also appears to be less susceptible shadow error caused by the arm of the measurement device and error caused by the background (i.e., what is surrounding the sample). Several clarifying edits to E1918 are also needed.

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    Work Item Status

    Date Initiated:
    01-09-2020

    Technical Contact:
    Mischa Egolf

    Status:
    Draft Under Development