Psychrometer for measuring the humidity of a gas flow

Details Psychrometer for measuring the humidity of a gas flow Psychrometer for measuring the humidity of a gas flow

1981-10-05

1984-07-24

Kreitman, Stephen A.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

73338, G01N 2562

Patent

active

044611676

ABSTRACT:
In a psychrometer for measuring the humidity of a gas flow, especially a gas flow having a temperature of above 100.degree. C., a flow of liquid is supplied to a wick surrounding the wet sensor via a preheater which heats the liquid to approximately the wet bulb temperature of the gas stream before the liquid comes into contact with the wet sensor, thereby avoiding cooling of the wet sensor by the liquid. The necessary preheating of the liquid can be achieved largely by heat exchange between the liquid and the gas flow downstream of the wet sensor; such heat exchange may be effected in part by using an auxiliary wick from which a portion of the liquid evaporates before the rest of the liquid reaches the main wick.

REFERENCES:
patent: 1601243 (1926-09-01), Irwin, Jr.
patent: 1942934 (1934-01-01), Reeve
patent: 2107077 (1938-02-01), Magner
patent: 2623391 (1952-12-01), Malecki
patent: 3196683 (1965-07-01), Gross
patent: 3459034 (1969-08-01), Kawaguchi
patent: 3515001 (1970-06-01), Greenspan et al.
patent: 3603135 (1971-09-01), Kawaguchi
patent: 3886797 (1975-06-01), Bauer
patent: 4129250 (1978-12-01), Chaikin et al.
patent: 4222261 (1980-09-01), LeBlanc et al.

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