ISO 9806:2017 Solar energy � Solar thermal collectors � Test methods is an international standard that outlines the requirements and procedures for testing solar thermal collectors. The standard provides guidance on the selection of testing equipment, the parameters to be measured, and the required test conditions. It also outlines the reporting requirements and the determination of the test results.

Solar thermal collectors are widely used in the solar energy industry to convert sunlight into heat. These collectors can be used to heat water, air, and other fluids, as well as to generate electricity. The efficiency of solar thermal collectors is dependent on the quality of the materials used and the proper functioning of the components. It is therefore important to ensure that the collectors meet the necessary performance standards.

The ISO 9806:2017 standard provides a consistent and reliable method for testing solar thermal collectors. It outlines the parameters to be measured, the test conditions, and the reporting requirements. The standard applies to all types of solar thermal collectors, including those used for air heating, water heating, and electricity generation.

The testing procedure outlined in the standard involves measuring the thermal performance of the solar collector under different environmental conditions. The environmental conditions include temperature, wind speed, and solar radiation. The performance parameters measured include thermal efficiency, optical efficiency, and thermal output. Once the measurements have been taken, the results are compared to the performance targets specified in the standard.

In addition to the performance testing, the standard also outlines the requirements for testing the collector's safety and reliability. This includes checking for any potential fire hazards, leaks, and other risks. The standard also specifies the requirements for testing the collector's durability, such as its resistance to corrosion, abrasion, and UV radiation.

The ISO 9806:2017 standard is an important document for the solar energy industry. It provides guidance on the selection of testing equipment, the parameters to be measured, the required test conditions, and the reporting requirements. The standard ensures that solar thermal collectors are of a high quality and performance, and that they are safe and reliable.