F - Mech Eng,Light,Heat,Weapons – 25 – B
Patent
F - Mech Eng,Light,Heat,Weapons
25
B
62/40
F25B 41/06 (2006.01) B60H 1/32 (2006.01) G01F 1/26 (2006.01)
Patent
CA 1247385
ABSTRACT OF THE DISCLOSURE 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. Image
485799
Emi Kenji
Fukushima Toshihiko
Miyamoto Seigo
Sayo Kosaku
Tani Seijiro
Hitachi Ltd.
Kirby Eades Gale Baker
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