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Title:
HEAT CONDUCTIVITY MEASURING METHOD AND HEAT CONDUCTIVITY MEASURING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2013/001950
Kind Code:
A1
Abstract:
Provided is a heat conductivity measuring method having improved measurement accuracy. In this heat conductivity measurement method, a body to be tested (10) is disposed between a heating plate (100) and a cooling plate (200), and a heat conductivity (λt) of the body to be tested (10), said heat conductivity being in the thickness direction (Ft) from the heating plate (100) toward the cooling plate (200), is measured. The method includes: a step of determining variable numbers that include measurement conditions of changing a heat flow rate in the width direction (Fw) from the center (13) toward the outer circumferential end (14) of the body to be tested (10); and a step of obtaining a correlative relationship between the variable numbers and an apparent heat conductivity (λa), which is measured on the basis of a rate of a heat flow from the heating plate (100), thickness of the body to be tested (10), temperature gradient in the thickness direction (Ft), and heat transfer area of the body to be tested (10), said heat transfer area being in the thickness direction (Ft).

Inventors:
OHMURA, Takahiro (1-26 Shibadaimon 1-chome, Minato-k, Tokyo 55, 〒1058555, JP)
Application Number:
JP2012/063524
Publication Date:
January 03, 2013
Filing Date:
May 25, 2012
Export Citation:
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Assignee:
NICHIAS CORPORATION (1-26, Shibadaimon 1-chome Minato-k, Tokyo 55, 〒1058555, JP)
ニチアス株式会社 (〒55 東京都港区芝大門1丁目1番26号 Tokyo, 〒1058555, JP)
International Classes:
G01N25/18
Domestic Patent References:
Foreign References:
JPH07209222A
JP2002116167A
JP2008051588A
Other References:
TAKAHIRO OMURA: 'Hiroi Ondo Han'i ni Okeru Kakushu Sokutei Hoho ni yoru Dannetsuzai no Netsu Dendoritsu Hikaku' NICHIAS GIJUTSU JIHO vol. 351, 28 November 2007, pages 6 - 15
TAKAHIRO OMURA ET AL.: 'Study on Estimation Method of Effective Thermal Conductivity' THE JAPAN SOCIETY OF MECHANICAL ENGINEERS KANTO SHIBU - SEIMITSU KOGAKUKAI YAMANASHI DISTRICT CONFERENCE vol. 2005, 21 October 2005, pages 103 - 104
Attorney, Agent or Firm:
HARUKA PATENT & TRADEMARK ATTORNEYS (Well Shin-Toshin Bldg. 4th Floor, 3-1-4 Nishi-Shinjuku, Shinjuku-k, Tokyo 23, 〒1600023, JP)
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Claims: