Process and apparatus for the thermal measurement of mass flow

Details Process and apparatus for the thermal measurement of mass flow Process and apparatus for the thermal measurement of mass flow

1979-12-27

1982-07-20

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Thermal type

G01F 168

Patent

active

043399495

ABSTRACT:
A thermal measurement of mass flow is obtained by passing a flowing mass through a hollow passageway, measuring the temperature of the mass at the inlet and at the outlet of said passageway and additionally measuring the heat flow released or absorbed through the walls of the passageway and then determining the mass flow by setting up the heat balance equation on the basis of the obtained data. Preferably, the data are fed into a computer to solve the resulting heat balance equation. The invention also comprises an apparatus wherein temperature sensors are arranged at both ends of a tubular passageway and wherein the heat flow meter comprises concentric wire coils of a thermic resistance material wound around the outer periphery of the tube and an interposed layer of predetermined thickness formed of a material of at most moderate heat conductivity.

REFERENCES:
patent: 1528383 (1925-03-01), Schmidt
patent: 1691600 (1928-11-01), Brush, Jr. et al.
patent: 2193762 (1940-03-01), Hirch et al.
patent: 2728225 (1955-12-01), Skibitzke
patent: 2994222 (1961-08-01), Laub
patent: 3238775 (1966-03-01), Watts
patent: 3336804 (1967-08-01), Poppendiek et al.
Kessie, "The Design and Construction of Thermal Flowmeters", in Argonne National Laboratory Report ANL-6531, 3/62, pp. 1-3.

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