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Why Are Independent Tests More Reliable Than Datasheets? Published： March 16, 2026Last Modified：July 19, 2026 Call to Action Executive Summary A product datasheet is an important engineering document, but it is not the highest level of technical evidence. Datasheets summarize product specifications selected by the manufacturer, while independent laboratory reports document how those specifications were […]

Is EN 12975 Still Relevant for PVT Collectors? Published： March 6, 2026Last Modified：July 20, 2026 Call to Action Executive Summary For many engineers, one question frequently arises when reviewing solar thermal documentation: Is EN 12975 still relevant, or has it been replaced by ISO 9806? The short answer is: Yes, EN 12975 remains relevant—but its

What Is ISO 9806 Published： March 18, 2026Last Modified：July 20, 2026 Call to Action What Is ISO 9806? The Complete Engineering Guide for PVT Collectors Executive Summary ISO 9806 is the internationally recognized testing standard for solar thermal collectors. For liquid photovoltaic-thermal (PVT) collectors, it establishes a unified laboratory methodology for evaluating thermal performance, hydraulic

What Standards Apply to PVT Collectors? Published： March 16, 2026Last Modified：July 7, 2026 Call to Action Executive Summary Unlike conventional photovoltaic (PV) modules or solar thermal collectors, a Photovoltaic-Thermal (PVT) collector combines two energy technologies within a single product. As a result, no single international standard can evaluate every aspect of its performance, safety, reliability,