Apparatus and method for measuring boiling or flash pressure of

Details Apparatus and method for measuring boiling or flash pressure of Apparatus and method for measuring boiling or flash pressure of

1980-03-12

1982-09-07

Ruehl, Charles A.

Thermal measuring and testing

Transformation point determination

By change in pressure of flow rate

73 642, 374 27, G01N 2508, G01N 714

Patent

active

043481175

ABSTRACT:
The pressure of a heated fluid is reduced in a test chamber. A small vent in the upper portion of the test chamber receives a stream of liquid from the chamber and yields a steady hiss when the fluid in the test chamber is under sufficient pressure to maintain the fluid solely in the liquid phase and it yields a sputtering hiss sound when the pressure in the test chamber is reduced sufficiently to permit steam and/or gases to coexist with the liquid in the chamber thus permitting liquid plus vapor to enter the vent. The change in sound may be used to alert an operator and/or pressure fluctuations in the test chamber may be automatically monitored to produce an output signal or a feedback signal for automatic control.

REFERENCES:
patent: 2671340 (1954-03-01), Jacobs et al.
patent: 2722826 (1955-11-01), Milligan
patent: 2782628 (1957-02-01), Jacobs et al.
patent: 2847852 (1958-08-01), Rhodes et al.

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