ISO 22975-2:2016

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This standard was last reviewed and confirmed in 2021. Therefore this version remains current.

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ISO 22975-2:2016 specifies definitions and test methods for durability and performance of heat-pipes for solar thermal application.

ISO 22975-2:2016 is applicable to heat-pipes for use with evacuated tubes, including glass-metal sealed evacuated tubes and double-glass evacuated tubes, as well as with flat plate collectors.

ISO 22975-2:2016 provides test methods for determining durability of the heat-pipe, including high temperature resistance and freeze resistance.

ISO 22975-2:2016 also provides test methods for measuring performance of the heat-pipe, including starting temperature, temperature uniformity and heat transfer power of the heat-pipe.

ISO 22975-2:2016 is only applicable to gravity heat-pipes.