ASHRAE标准109《测定含有沸腾液体的平板太阳能集热器热性能的试验方法》为越来越多的两相平板太阳能集热器提供了标准试验程序。该标准以ASHRAE标准93“确定太阳能集热器性能的测试方法”为蓝本描述了沸腾液体收集器的工作特性，并与单相收集器进行了比较。本文介绍了标准109的重要特征，尤其是与ASHRAE标准93中的对应部分不同的特征。给出并讨论了根据标准109进行测试时预期的结果列表。 讨论了创作委员会的一些意图和基本考虑。本标准的潜在用途概述了为最大限度地发挥本标准对太阳能行业的作用所需的额外工作。引文:研讨会论文，佐治亚州亚特兰大，1984年

ASHRAE Standard 109, "Methods of Testing to Determine the Thermal Performance of Flat Plate Solar Collectors Containing a Boiling Fluid," provides standard test procedures for the growing number of two-phase flat plate solar collectors. The standard is modeled on ASHRAE Standard 93, "Methods of Testing to Determine the Performance of Solar Collectors."The operating characteristics of boiling liquid collectors are described and compared to those of single-phase collectors. The important features of Standard 109 are presented, particularly those differing from their counter­parts in ASHRAE Standard 93. A list of results to be expected when testing under Standard 109 is presented and discussed. Some of the intentions and underlying considerations of the authoring committee are discussed. Potential uses of the standard are presented with an outline of additional work needed to maximize the standard’s usefulness to the solar industry.