Borehole heat exchangers are used in conjunction with ground source heat pumps in Nordic countries. Aqueous ethanol solutions are commonly used with other secondary fluids such as water in borehole heat exchangers to decrease the freezing point of the liquid. However, ethanol based mediums contain denaturing agents that can affect the thermal properties of the secondary fluids. In this study, a Thermal Constants Analyzer used the Transient Plane Source method ...
Fiberglass is used inside car mufflers as a noise reducer and insulator. The insulating properties of the fiberglass eliminates the need for muffler heat shields, however to properly design vehicles without heat shields, it is important to know the thermal conductivity of fiberglass at high temperatures. A TPS Thermal Constants Analyzer was used to measure the thermal conductivity of glass fibers with diameters of 17 µm and 24 µm. Each sample was ...
Composite materials are materials made of reinforcing substances that are set in a matrix of polymers, ceramics or metals. This experiment measured the thermal conductivity of wood and ceramics, and explored the factors that influence the thermal conductivity. The Transient Plane Source (TPS) method was used because test times are relatively short compared to steady state techniques, and transient methods are not limited by the size, shape, or state of ...
To improve the overall product and thermal characteristics of laser sintering of nylon-12, the transient plane source (TPS) method was used to measure the thermal conductivity of nylon-12 powder. The spiral nickel sensor of was sandwiched between the samples of nylon-12 powder packed at 0.547 g/cc, and as the temperature of the sample rose from 40 °C to 170 °C, the thermal conductivity increased linearly. Knowing these trends will help to make ...
As green energy becomes increasingly important, more companies are exploring the possibility of using molten salts as heat transfer fluids for concentrated solar power. One of the downfalls of molten salts is their low thermal conductivity, which can be altered with the addition of thermally conductive nanoparticles. The thermal conductivity analyzer was used in this experiment to measure the thermal conductivity of molten salts after the addition of MoS2 (molybdenum ...
