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About This Item
Full Description
ASHRAE Standard 139 provides uniform test methods for rating desiccant dehumidifiers that use heat for the regeneration process. It addresses the test methods, apparatus and instruments to be used, data to be obtained, and calculations needed to confirm valid test results.
This 2022 revision of Standard 139 updates references.
Document History
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ASHRAE 139-2022
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Standard 139-2022 -- Method of Testing for Rating Desiccant Dehumidifiers Utilizing Heat for the Regeneration Process (ANSI Approved)- Most Recent
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ASHRAE 139-2019
Standard 139-2019 -- Method of Testing for Rating Desiccant Dehumidifiers Utilizing Heat for the Regeneration Process (ANSI Approved)- Historical Version
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ASHRAE 139-2015
Standard 139-2015 -- Method of Testing for Rating Desiccant Dehumidifiers Utilizing Heat for the Regeneration Process (ANSI Approved)- Historical Version
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ASHRAE 139-2007
Standard 139-2007 -- Method of Testing for Rating Desiccant Dehumidifiers Utilizing Heat for the Regeneration Process (ANSI Approved)- Historical Version
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ASHRAE 139-1998
Standard 139-1998 -- Method of Testing for Rating Desiccant Dehumidifiers Utilizing Heat for the Regeneration Process (ANSI approved)- Historical Version