| 摘要 |
A method and apparatus for indirectly measuring the solid-liquid interface equilibrium temperature dynamically excites the heat flux flowing through a coldfinger arrangement followed by a statistical estimation of the interface temperature, solid layer heat conductivity and thickness ratio, bulk liquid temperature and thermal heat transfer coefficient. The coldfinger includes a pair of substantially concentric and substantially cylindrical members arranged one within another so as to have an outer member and a venturi-shaped inner member and a space therebetween. The members are arranged such that a gas flows through the inner member and a space between the inner and outer members of the coldfinger and then exits the coldfinger arrangement. The average gas temperature within the space of the coldfinger and the difference in temperature between the gas entering the coldfinger and the gas exiting the coldfinger are measured and the heat flux flowing through the coldfinger is varied in a time varying fashion either by varying the amount of heat supplied to the gas entering the coldfinger or by varying the amount of gas flowing through the coldfinger. The solid-liquid interface equilibrium temperature is determined on the basis of the respective measured temperatures and the specific parameters of the gas and the solid and the liquid and the gas flowrate and the dimensions of the coldfinger.
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