Overview The relationship between water and soil thermal conductivity or resistivity is referred to as a thermal dry-out curve. The thermal conductivity of soil is directly related to the amount of moisture contained within the soil and depends strongly on the water content, composition within the soil, temperature, and bulk density. Dry-out curves are used [...]

Overview In this webinar, Thermtest’s Product Line Manager for the Transient Hot-Wire (THW) method will discuss the Thermal Conductivity of liquids using our in-house THW L-3 sensor. The THW-L3 sensor is fully compatible with Thermtests MP-2 portable device. The sensor uses the Transient Hot-Wire method to measure the thermal properties of liquids and pastes. With [...]

Overview Proper thermal management in electronics is crucial for reliability, speed, and efficiency. With thermal conductivity playing an important role in making electronics perform properly, we will explore ways to measure thermal conductivity using Steady-State Thermoreflectance fiber optics (SSTR-F). Silicone, non-silicone gap pads, gap filling materials and potting of resins are common techniques for thermal [...]

Overview One of the disadvantages in modern buildings are the lack of thermal mass, meaning that buildings cannot contain heat in the winter and overheat in the summer. More times than not, cooling and heating systems are installed in buildings to maintain a comfortable temperature. However, with the use of phase change materials (PCM) it [...]

Overview In this webinar, we compare three different methods for testing the measurement of thermal conductivity. The methods explored will be the Guarded Heat Flow, Transient Plane Source, and Laserflash and furthermore using these methods for testing of graphite samples. This will then lead us into the discussion of the effects of thermal shunting on [...]

Overview Ultra-high temperature processing (UHT), ultra-heat treatment, or ultra-pasteurization is the process of heating liquid food above 135 °C (275 °F) for 2 to 5 seconds to kill bacterial endospores and sterilize the liquid. Originally used to prolong the shelf life of milk, Ultra-high temperature processing is now used in a wide range of liquid [...]

Overview For the measurement of rigid and compressible insulation material, thermal conductivity results calculated from measured thermal resistance is the preferred method. A comparison of thermal conductivity ASMT/ISO standard and investigative testing will be presented to explain why this is the case. This is a part two of our steady state webinars. About the Speaker [...]

Overview In this webinar, we compare which transient method is ideal for liquid. The transient methods explored will be Hot-Wire, Line Source, and Plane Source. Our test results on (liquid type here) using the three methods will be discussed. About the Speaker Dr. Sofia Mylona is an internationally recognized expert in the area of the [...]

Overview Steady-state thermoreflectance (SSTR) is an optical measurement technique used to measure the thermal conductivity or boundary conductance of thin films and coatings ranging from a few nanometers up to tens of microns. Use of traditional steady state concepts in combination with a laser based pump-probe configuration allows for measurements of the thermal conductivity of [...]

Overview The measurement of warm touch and cool feel, referred to as thermal effusivity, can be used to compare synthetic materials to their authentic counterparts. As manufacturing synthetic and composite materials have become increasingly popular, the need for materials that look and feel like the authentic material has also grown. In this webinar, we compare [...]

Overview The transient line source technique can be used for the thermal conductivity and resistivity of solid materials such as concrete, natural stone, and low thermal conductivity ceramics. Dr. Cederkrantz discusses his measurements on the materials using the TLS-100. For in-situ and lab testing using the Transient Line Source: TLS-100. Speaker Dr. Daniel Cederkrantz is [...]

Overview Engine oil is an important heat transfer fluid in combustion engines. Overtime, engine oil degrades from heat, pressure, and the collection of debris. Thermtest’s principal scientist, Dr. Sofia Mylona, will investigate the thermal conductivity of new vs. used engine oil and explain her findings in this webinar. About the Speaker Dr. Sofia Mylona is [...]

Overview As the bedding industry encompasses measurements of comfort for feeling of coolness or warmth, also known as Thermal Effusivity, for both initial touch and steady-state sleeping. This webinar will cover how these comfort factors can be measured and used in design in the bedding industry. Speaker Jeff Retallick is a Applications Scientist at Thermtest [...]

Overview Nanofluids are popular due to their enhanced thermal properties as coolants when used in heat transfer equipment such as radiators, electronic cooling systems, or heat exchangers. Our in-house expert will briefly compare thermal conductivity methods for testing liquids and the advantages of testing liquids with the THW-L2. Transient Hot-Wire (THW) is the primary method [...]

Overview For the measurement of non-homogenous and layered materials, thermal conductivity results calculated from measured thermal resistance is the preferred method. A comparison of thermal conductivity ASTM / ISO standards and investigative testing will be presented to explain why this is the case. About the Speaker Dale Hume has more than twenty years of thermal [...]

Overview In this webinar featuring Moisture Wicking Fabrics, we discuss our findings on the effects of moisture wicking fabrics and cool feel performance wear using the Thermal Effusivity Meter (TPS-EFF). Our focus is determining if the TPS-EFF can assist in selecting cool feel materials to be used in athletic wear with varying moisture levels. About [...]

Overview Discussing the measurement of the thermal conductivity and resistivity of soil and concrete using the transient line source technique. The transient line source (TLS) is an ideal and standardized method for testing materials in-situ and in the lab. Thermtest's TLS-100 is an easy-to-use and affordable instrument used for testing soil, rocks, concrete, and polymers. [...]