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ASHRAE STD 109

1986 Edition, January 22, 1986

Complete Document

Methods of Testing to Determine the Thermal Performance of Flat-Plate Solar Collectors Containing a Boiling Liquid

Includes all amendments and changes through Reaffirmation Notice , 2003


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Description / Abstract:

This standard applies to flat-plate solar collectors in which some of the fluid entering the collector boils and some fraction leaves as a saturated vapor.

The collector heat transfer fluid may be any fluid that boils during its passage through the collector.

This standard contains methods for conducting tests outdoors under natural solar irradiance and for conducting tests indoors under simulated solar irradiance.

This standard provides test method and calculation procedures for determining steady-state and quasi-steady-state thermal performance, time, and angular response characteristics of solar collectors.

This standard is not applicable to those collectors in which the thermal storage or condenser unit is integral with the collector.

PURPOSE

The purpose of this standard is to provide test methods for determining the thermal performance of flat-plate solar energy collectors that use boiling fluids for thermal energy transfer.
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