EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of EN 993-14 testing. This part of EN 993 specifies a hot wire (cross array) method for determining the thermal conductivity of refractory products and materials. It can be applied to dense and insulating shaped products and powdery or granular materials because for thermal conductivities less than 1,5 W/mKE Electrically conductive materials cannot be measured.
The hot wire method involves passing a current through a fine wire embedded in the refractory sample and measuring the resulting temperature rise. The thermal conductivity of the sample is then calculated based on the temperature rise, the dimensions of the sample and wire, and the electrical parameters of the wire.
The standard provides detailed instructions for the equipment and procedures required to perform the test, including sample preparation and calibration of the hot wire instrument. The standard also specifies the range of thermal conductivity values that can be measured using this method, typically between 0,5 and 10 W/(m K).
EN 993-14 also provides guidance on calculating and reporting results, including the use of statistical analysis to evaluate the precision and accuracy of the test method. The standard also contains recommendations for the interpretation of results in terms of the thermal performance of the refractory product.
In general, the determination of thermal conductivity by the hot wire method according to EN 993-14 is an important tool for evaluating the performance of densely shaped refractory products in high temperature applications. The standard provides a reliable and repeatable method for measuring thermal conductivity, which is critical to ensuring the safety and efficiency of industrial processes based on refractory materials.
EUROLAB assists manufacturers with EN 993-14 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.
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