Single Apparatus for the Precise Measurement of the Physical Properties of Liquids at Elevated Temperature and Pressure

摘要

This report describes an instrument designed for measuring the viscosity, surface tension, and density of liquid at elevated temperature (900 exp 0 C) and pressure (10 atm). The theoretical principles, details of construction and operation, and response of the instrument are discussed in detail. As an example of the accuracy of the data generated by this instrument, the thermophysical properties of the molten equimolar mixture of NaNO sub 3 and KNO sub 3 have been measured at 250 to 450 exp 0 C and are shown to be in excellent agreement with the recommended literature values. (ERA citation 06:001279)