Enthalpy of the saturated water, latent heat of vaporization of the saturated water, enthalpy of the superheated steam, multiplying coefficient in dryness measuring method of the

摘要

PROBLEM TO BE SOLVED: To provide a method for measuring enthalpy of saturated water, which can improve the measurement accuracy of information for measuring the dryness fraction of wet steam and reduce the measurement cost.;SOLUTION: The device comprises a wet steam pressure detecting means 5 which detects the pressure of the wet steam to be measured, a wet steam index value deriving means 81 which, based on the information detected by the wet steam pressure detecting means 5, multiplies the fourth root of the absolute pressure of the wet steam by a coefficient to obtain a wet steam index value, and a saturated water enthalpy deriving means 82 which obtains enthalpy i1 of saturated water using a n-th formula for deriving the enthalpy of saturated water, having the wet steam index value as a variable.;COPYRIGHT: (C)2004,JPO