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Accession number;07A0043246
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| Title;THE UNCERTAINTY IN THE DROP METHOD |
| Author;
HIROSE RYUICHI
(Sumitomo Metal Technol. Inc., JPN)
TANAKA TAKASHI
(Sumitomo Metal Technol. Inc., JPN)
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Journal Title;Thermophys Prop
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Journal Code:X0031A
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ISSN:0911-1743
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VOL.27th;NO.;PAGE.130-132(2006)
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| Figure&Table&Reference;FIG.9, REF.4 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;The drop method has been used for measuring enthalpy change and specific heat over 873K. It would be important for the drop method to evaluate the uncertainty of the apparent water equivalent, to evaluate the uncertainty of the enthalpy change, and to investigate the correlation between the temperature at the sample position and the temperature at the outside of crucible. The uncertainty of water equivalent has been evaluated within .+-.1%, when improved components were used. The uncertainty of the enthalpy change has been evaluated within .+-.3%. The melting points of pure metals such as aluminum and nickel were measured, in order to get the correlation between the temperature at the sample position and the temperature at the outside of crucible. The temperature of the sample was evaluated within +3.3K by the calibration method using aluminum and nickel melting points. (author abst.) |
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