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RECONSIDERATION OF THE TRANSIENT LINE HEAT-SOURCE TECHNIQUE.

Author(s) : SAITO A., MATSUMOTO K., UTAKA Y.

Type of article: Article

Summary

IN THE PAPER, WEAK NATURAL CONVECTION EFFECTS IN THE TRANSIENT HOT WIRE METHOD OF LIQUID THERMAL CONDUCTIVITY MEASUREMENT ARE ANALYTICALLY INVESTIGATED. THE TIME DEPENDENCIES OF THE APPARENT THERMAL CONDUCTIVITY, INCLUDING THE NATURAL CONVECTION EFFECTS, ARE SHOWN FOR VARIOUS MEASURING CONDITIONS. THE ERRORS ARE ALSO SHOWN FOR THE CASE WHERE TWO HOT WIRES, HAVING DIFFERENT LENGTHS, ARE SET IN THE WHEATSTONE BRIDGE CIRCUIT TO DECREASE THE EDGE EFFECTS. IT IS SHOWN THAT SLIGHT NATURAL CONVECTION EFFECTS APPEAR, EVEN DURING SHORT PERIODS OF MEASUREMENT, WHERE THE EFFECTS ON ACCURACY HAD BEEN CONSIDERED NEGLIGIBLE.

Details

  • Original title: RECONSIDERATION OF THE TRANSIENT LINE HEAT-SOURCE TECHNIQUE.
  • Record ID : 1988-1398
  • Languages: English
  • Source: JSME int. J. - vol. 30 - n. 270
  • Publication date: 1987/12
  • Document available for consultation in the library of the IIR headquarters only.

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