Measuring the Thermal Conductivity of Heat Transfer Fluids Temperature management and heat transfer are essential components of industrial processes and systems. Heat transfer fluids (HTFs) are often used in cases where materials or devices need to be heated, cooled or maintained at stable operating temperatures. Such fluids serve to absorb, transports and dissipate heat in a variety of industries such as electronic transformers and polymer production. Improving thermophysical parameters of a HTF is an important part of making an industrial process more efficient. With a wide range of available fluids specific to various applications, reliable and accurate thermal conductivity characterization is critical. Measuring a fluid’s thermal conductivity helps evaluate: - Cooling efficiency in electronics and industrial systems - Heat-transfer performance under different conditions - Material suitability for design and production Request a quote or call +1-877-827-7623 (toll-free) or +1 (506) 457-1515 (international) to speak with one of our experts to learn how fluid measurements can support your product development. Common fluids include: - Water-based coolants and glycols - Thermal oils and phase-change fluids - Emulsions, gels, and slurries - Specialty nanofluids and engineered formulations Both low- and high-viscosity fluids can be measured reliably. The Trident system can handle a wide variety of formulations, making it suitable for R&D and industrial applications. Request a demo to see your fluid types tested. Key properties include: - Thermal conductivity - Thermal diffusivity - Thermal effusivity These measurements are critical for fluid performance evaluation, system optimization, and material qualification. The Trident system can accurately measure all of these properties using advanced transient plane source (MTPS) techniques, and the heat capacity is calculated. Yes. Temperature-controlled setups allow measurement across a wide temperature range, helping you understand how fluids behave under real operating conditions. Applications include: - Cooling systems and heat exchangers - Energy storage fluids - Process fluids in industrial applications Call one of our experts at +1-877-827-7623 (toll-free) or +1 (506) 457-1515 (international) to determine the best temperature setup for your fluid testing. It varies by method, but a minimum of 2 ml is typically required. This small volume allows rapid testing while keeping sample usage efficient. Measurements are typically better than ±5% with high repeatability. Modern transient methods provide: - Stable results across low- and high-viscosity fluids - Low sensitivity to operator variation - Reliable performance for R&D and industrial quality control Thermal conductivity measurements follow recognized standards: - ASTM D5930 – Transient Line Source (TLS) method - ASTM D7896-19 – C-Therm’s THW method - ASTM D7984 – C-Therm’s MTPS method These standards ensure reliable, repeatable, and comparable results across different fluids. Selection depends on: - Fluid type and viscosity - Temperature range - Required measurement precision. A technical specialist can recommend the optimal setup and sensor configuration to ensure accurate results. Request a consultation to select the best method for your fluids.
