Simultaneous measurements of thermal conductivity and thermal diffusivity of insulators, fluids and conductors using the transient plane source (TPS) technique

1994 ◽  
Vol 18 (9) ◽  
pp. 777-782 ◽  
Author(s):  
A. Maqsood ◽  
N. Amin ◽  
M. Maqsood ◽  
G. Shabbir ◽  
A. Mahmood ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermal Diffusivity ◽  
Plane Source ◽  
Simultaneous Measurements ◽  
Transient Plane Source

Experimental Study on Thermal Properties of Hollow Sphere Structures

2021 ◽  
Vol 407 ◽  
pp. 185-191
Author(s):  
Josef Tomas ◽  
Andreas Öchsner ◽  
Markus Merkel
Keyword(s):  
Thermal Conductivity ◽  
Experimental Study ◽  
Thermal Properties ◽  
Thermal Diffusivity ◽  
Specific Heat ◽  
Hollow Sphere ◽  
Plane Source ◽  
Source Method ◽  
Transient Plane Source ◽  
Transient Plane Source Method

Experimental analyses are performed to determine thermal conductivity, thermal diffusivity and volumetric specific heat with transient plane source method on hollow sphere structures. Single-sided testing is used on different samples and different surfaces. Results dependency on the surface is observed.

Transient Plane Source Method for Thermal Property Measurements of Metal Hydrides

2008 ◽  
Author(s):  
Scott Flueckiger ◽  
Yuan Zheng ◽  
Timothe´e Pourpoint
Keyword(s):  
Thermal Conductivity ◽  
Stainless Steel ◽  
Thermal Diffusivity ◽  
Hydrogen Storage ◽  
Thermal Property ◽  
Metal Hydride ◽  
Metal Hydrides ◽  
Flash Method ◽  
Plane Source ◽  
Transient Plane Source

Metal hydrides are promising hydrogen storage materials with potential for practical use in a passenger car. To be a viable hydrogen storage option, metal hydride heat transfer behavior must be well understood and accounted for. As such, the thermal properties of the metal hydride are measured and compiled to assess this behavior. These properties include thermal conductivity, specific heat, and thermal diffusivity. The transient plane source (TPS) method was selected primarily due to a high level of versatility, including customization for high pressure hydrogen environments. To perform this measurement, a TPS 2500 S thermal property analyzer by the Hot Disk Company was employed. To understand the measurement and analysis process of the TPS method, two different sample materials were evaluated at ambient conditions. These samples included a stainless steel pellet and an inactivated (non-pyrophoric) metal hydride pellet. Thermal conductivity and thermal diffusivity of these samples were measured using the TPS method. The thermal property measurements are compared to the data available in the literature (stainless steel) and the data obtained using laser flash method (metal hydride). The improvements needed to successfully implement the TPS method are discussed in detail.

Hot Disk: A Transient Plane Source Technique for Rapid Thermal Conductivity Measurement

2002 ◽  
Author(s):  
Yi He ◽  
Grace S. Ng
Keyword(s):  
Thermal Conductivity ◽  
Thermal Diffusivity ◽  
Temperature Increase ◽  
Conductivity Measurement ◽  
Constant Current ◽  
Plane Source ◽  
Transient Plane Source ◽  
Wide Range ◽  
Hot Disk ◽  
Conductivity Range

Abstract Hot disk metrology represents a transient plane source measurement technique for characterizing thermal conductivity and thermal diffusivity of a wide range of materials. In this technique, the hot disk sensor serves as a heat source and a thermometer. During the measurement, the sensor is sandwiched between two halves of a sample and a constant current is supplied to the sensor. The temperature increase at the sensor surface is strongly dependent on the thermal transport properties of the surrounding material. By monitoring the temperature increase as a function of time, one can determine the thermal conductivity and thermal diffusivity of the surrounding material. The main advantages of the hot disk technique include: wide thermal conductivity range, from 0.005 W/m·K to 500 W/m·K; wide range of materials, from liquid to solid; easy sample preparation; non-destructive; and more importantly, high accuracy (within 2% or better). In this paper, the basic theory of the hot disk technique will be discussed based on first principles. This technique has been successfully used to characterize a variety of thermal interface materials (TIMs) used in electronic packaging. The experimental results are in good agreement with the results obtained by another method.

THE TRANSIENT PLANE SOURCE TECHNIQUE TO MEASURE THERMAL CONDUCTIVITY OF CLAYS OF BIKANER REGION

2013 ◽  
Vol 22 ◽  
pp. 42-50
Author(s):  
M. S. SHEKHAWAT ◽  
S. K. TAK ◽  
R. MANGAL
Keyword(s):  
Thermal Conductivity ◽  
Thermal Diffusivity ◽  
Special Reference ◽  
Room Temperature ◽  
Normal Pressure ◽  
Plane Source ◽  
Transient Plane Source ◽  
Maximum Value ◽  
Transient Plane Source Technique

Thermal conductivity and thermal diffusivity of blended clays have been studied with special reference to Ukrainian clay. The blends were made of three different clays available locally in western part of Rajasthan. Thermal conductivity and thermal diffusivity were determined using the transient plane source (TPS) technique at room temperature and normal pressure. It was found that thermal conductivity and thermal diffusivity of the blends reported maximum at temperature 1200° C and near in the values of Ukrainian clay. The thermal conductivity of blend B2 reported maximum value (1.29 W/m-k) in the present study.

Structural and Thermal Characterization of Polymorphic Er2Si2O7

2012 ◽  
Vol 510-511 ◽  
pp. 255-260
Author(s):  
Ashari Maqsood
Keyword(s):  
Thermal Conductivity ◽  
Thermal Diffusivity ◽  
Transport Properties ◽  
Temperature Region ◽  
Thermal Characterization ◽  
Plane Source ◽  
Transient Plane Source ◽  
Transient Plane Source Technique ◽  
Made In

The first measurement of thermal transport properties on the polycrystalline D-Er2Si2O7have been made in the temperature range 77-300K. Both the thermal conductivity and the thermal diffusivity follow modified Euckens law in this temperature region. The Transient Plane Source technique (TPS) has been used to measure thermal conductivity and thermal diffusivity simultaneously.

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