Variable temperature apparatus using a thermal conductivity measurement technique for the determination of superconducting ac power loss

1975 ◽  
Vol 46 (5) ◽  
pp. 511-516 ◽  
Author(s):  
R. D. McConnell ◽  
P. R. Critchlow
Keyword(s):  
Thermal Conductivity ◽  
Measurement Technique ◽  
Power Loss ◽  
Variable Temperature ◽  
Conductivity Measurement ◽  
Thermal Conductivity Measurement ◽  
Ac Power

A Traversing-Thermocouple Technique for the Rapid Measurement of Thermal Conductivity in the Range 300 to 1200 K

1971 ◽  
Vol 93 (2) ◽  
pp. 165-171 ◽  
Author(s):  
Philip E. Eggers ◽  
Ralph E. Best
Keyword(s):  
Thermal Conductivity ◽  
Measurement Technique ◽  
Rapid Determination ◽  
Conductivity Measurement ◽  
Thermal Conductivity Measurement ◽  
Thermocouple Measurement ◽  
Wide Range ◽  
Novel Design ◽  
Two Temperature

A thermal conductivity measurement technique has been developed based on a novel design employing an ultrafine (0.02 cm dia) “traversing” thermocouple. This technique features the rapid determination of thermal conductivity as a function of temperature for specimens operating in the range from 300 up to 1200 K. In contrast to conventional “comparative” methods of thermal conductivity measurement, the present approach requires only one equilibrium condition, viz., the condition in which the specimen is maintained between the two temperature extremes of interest. The traversing-thermocouple measurement technique also permits the accommodation of a wide range of specimen sizes (e.g., 0.25 to 1.3 cm in diameter and 0.7 to 3.0 cm in length) and measurements accurate to within 5 to 7 percent. Although initially developed for use with semiconductors, the measurement technique is equally well suited to semimetals, metals, and insulators.

scholarly journals DETERMINATION OF THERMAL-MECHANICAL PROPERTIES OF CONCRETE

2002 ◽  
Vol 8 (2) ◽  
pp. 121-124
Author(s):  
Ramiz Delpak ◽  
Albinas Gailius ◽  
Dangyras Žukauskas
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Temperature Difference ◽  
Conductivity Measurement ◽  
Thermal Conductivity Measurement ◽  
Ordinary Method ◽  
Difference Measurement ◽  
Thermal Mechanical Properties ◽  
The Relationship

The aim of this investigation was to find the relationship between different percentage of damage and thermal conductivity of concrete. The influence of different damage on thermal conductivity of concrete was determined. The method with insulation (ordinary method) based on the temperature difference measurement between two surfaces of specimen, when one of the surfaces is heated, was used for thermal conductivity measurement. Three specimens for every percentage of damage were used for each measurement of thermal conductivity. After this research one conclusion can be made definitely: influence of different percentage of damage on thermal conductivity of concrete.

scholarly journals Development of Thermal Conductivity Measurement Technique for Molten Semiconductors under Microgravity.

Materia Japan ◽  
1995 ◽  
Vol 34 (5) ◽  
pp. 650-652
Author(s):  
Shin Nakamura ◽  
Taketoshi Hibiya ◽  
Fumio Yamamoto ◽  
Takao Yokota
Keyword(s):  
Thermal Conductivity ◽  
Measurement Technique ◽  
Conductivity Measurement ◽  
Thermal Conductivity Measurement
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