Methyl and ethyl alcohol have good thermophysical characteristics for use in refrigeration systems. The purpose of this study was to measure the thermal conductivity of ethyl and methyl alcohol solutions to determine if they can become competitive secondary fluids. A Thermal Constants Analyzer measured the thermal conductivity of various 20-wt% ethyl alcohol and 20 wt-% propyl alcohol solutions using the Transient Plane Source (TPS) method. Measurements were taken after 1, 2, and 3 seconds ...
This paper focused on determining the thermal conductivity of multiwalled carbon nanotubes (MWCNTs) and carbon nanofibers (CNFs) that were dispersed throughout n-octadecane as phase change materials (PCMs). The Thermal Constants Analyzer TPS measured the thermal conductivity of the n-octadecane samples at solid and liquid phases using the transient plane source (TPS) method. Results showed that the thermal conductivity of the solid phase n¬-octadecane/MWCNTs samples increased with nanotube concentration. ...
It is important to understand the thermophysical properties of concrete when it is quickly heated, such as at the Cape Canaveral Air Force Station. In this experiment, the transient plane source (TPS) method measured the thermal conductivity, thermal diffusivity, and specific heat of four concrete samples taken from the Launch Complex 17 at Cape Canaveral. The samples were measured from room temperature up to 300 °C over intervals of 50 °C. Results showed ...
Phase change materials (PCMs) are becoming increasingly important in the field of thermal energy storage. Ionic liquids (ILs) are a group of novelty salts that are liquid below temperatures of 100 °C. To learn more about ILs based on ZnCl2/ChCl and their uses as PCMs, a Thermal Constants Analyzer measured the thermal conductivities of ionic liquids at 25 °C using the transient plane source (TPS) technique. Results indicated that thermal conductivity ...
Easy, non-invasive, and cost-effective methods to detect damage in horse hooves have yet to be produced. MRI- or CT-scans are typically used if injury is presumed, however they are expensive and impractical when examining the hoof of a live horse. This study tested if the Transient Plane Source (TPS) method can detect inconsistencies in hooves by measuring thermal conductivity. Results showed that the thermal conductivity measurements are reproducible, and inconsistencies ...
