ISO 9806:2017

Overview

ISO 9806:2017 - Solar energy: Solar thermal collectors - Test methods defines standardized test procedures to assess the durability, reliability, safety and thermal performance of fluid‑heating solar collectors. The standard applies to laboratory and in‑situ testing for all types of fluid and air heating collectors, hybrid collectors (co‑generating heat and electric power), and collectors that use external power for normal operation or safety. It explicitly does not cover electrical safety aspects or devices in which thermal storage is so integral that collection and storage cannot be separated.

Key topics and requirements

ISO 9806:2017 provides a comprehensive suite of test methods and reporting requirements, including (but not limited to):

• Test planning and sequence: general testing overview and specific sequences for outdoor and laboratory tests.
• Mechanical and pressure tests: internal pressure testing of fluid channels; mechanical load tests under positive/negative pressure; impact resistance tests.
• Air‑specific tests: air leakage rate and rupture/collapse tests for air‑heating collectors.
• Thermal tests: measurement of standard stagnation temperature, internal and external thermal shock tests, and thermal performance testing.
• Environmental exposure: outdoor exposure and half‑exposure tests, freeze resistance tests (including heat‑pipe considerations), and rain penetration testing.
• Durability and final inspection: exposure cycles, inspection procedures and mandatory reporting content.
• Applicability notes: guidance for collectors with active components, façade installations, wind/IR sensitive collectors, and hybrid/electrically assisted systems.

The standard specifies apparatus, procedures, test conditions, and result‑reporting formats to ensure repeatability and comparability across laboratories and in‑situ campaigns.

Practical applications and users

ISO 9806:2017 is intended for:

• Manufacturers developing and validating solar thermal collectors for performance and durability claims.
• Independent test laboratories performing certification and type‑approval testing.
• Certification bodies and regulators requiring objective test evidence for product compliance.
• System designers, specifiers and procurement teams evaluating products for building or industrial heating projects.
• Researchers and R&D teams comparing collector concepts under standardized conditions.

Practical uses include product development, quality assurance, type testing, warranty validation, procurement specifications, and supporting claims for energy performance and lifecycle durability.

Related standards

ISO 9806:2017 complements other norms covering electrical safety, building codes, and solar system performance; users should apply appropriate electrical and safety standards when testing collectors that include electrical components or integrated storage.

Keywords: ISO 9806:2017, solar thermal collectors, test methods, stagnation temperature, freeze resistance, rain penetration, mechanical load, thermal performance.