Apparatus for measuring refrigerant flow rate in refrigeration c

Details Apparatus for measuring refrigerant flow rate in refrigeration c Apparatus for measuring refrigerant flow rate in refrigeration c

1985-07-02

1987-03-31

Goldstein, Herbert

Refrigeration

Automatic control

Refrigeration producer

62225, 7386152, F25B 4100, G01F 136

Patent

active

046532889

ABSTRACT:
A refrigerant flow rate measuring apparatus has a means for detecting the opening degree A of an expansion valve of a refrigeration cycle, a pressure detecting means for detecting the refrigerant pressure Pi at upstream side of the expansion valve, a pressure detecting means for detecting the refrigerant pressure Po at downstream side of the expansion valve, a refrigerant density detecting means for detecting the density .gamma.i of the refrigerant at the inlet side of the expansion valve, a converting means for directly or indirectly converting the values detected by the detecting means into electric signals, and a calculating means for calculating the flow rate of the refrigerant in accordance with the following formula, from the electric signals. ##EQU1##

REFERENCES:
patent: 1924125 (1933-08-01), Linderman, Jr.
patent: 1946319 (1934-02-01), Hodgson et al.
patent: 4131015 (1978-12-01), Chaula et al.
patent: 4375169 (1983-03-01), Torresin
patent: 4499739 (1985-02-01), Matsuoka et al.

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