Simultaneous measurement of specific heat and total hemispherical emissivity of metals by the transient calorimetric technique
The specific heat c and total hemispherical emissivity {var_epsilon}{sub h} of iron and constantan have been measured using a simultaneous-measurement method proposed in a previous paper to verify the accuracy of the measurements. Cylindrical specimens, whose geometrical shape is presumed to be more appropriate than those in the previous study are used as the compound specimens necessary for the method. To obtain more accurate results, an expression for the temperature versus time curve has been developed; this expression is highly accurate over the entire temperature range. For iron, the measured c- and {var_epsilon}{sub h}-values are compared with c-values recommended in the CINDAS Data Series and with {var_epsilon}{sub h}-values previously measured by H. Masuda and M. Higano, respectively. For constantan, empirical relations between c and T (temperature) and {var_epsilon}{sub h} and T are obtained. Errors in the present results are analyzed and the total errors in the results are estimated.
- OSTI ID:
- 51709
- Journal Information:
- Heat Transfer - Japanese Research, Vol. 23, Issue 3; Other Information: PBD: Feb 1995; TN: Translated from Vol.23, No.3, 1994
- Country of Publication:
- United States
- Language:
- English
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