Leak detection in heating, ventilating and air conditioning syst

Details Leak detection in heating, ventilating and air conditioning syst Leak detection in heating, ventilating and air conditioning syst

1995-08-25

1996-12-10

Williams, Hezron E.

Measuring and testing

With fluid pressure

Leakage

73 405R, 250301, 252962, 252964, G01N 3700

Patent

active

RE0353957

ABSTRACT:
Refrigerant leakage in heating, ventilating and air conditioning systems employing hydrofluorocarbon refrigerants is determined by adding a mixture [of] including predetermined amounts of a napthalamide optical brightner [with an appropriate lubricant] to the system. Inspection of the system under ultraviolet light provides an indication of any leakage occuring in the system of liquid and/or gas.

REFERENCES:
patent: 1915965 (1933-06-01), Williams
patent: 2096099 (1937-10-01), Gaugler
patent: 3234045 (1966-02-01), Larsen
patent: 3361547 (1968-01-01), Packo
patent: 3572085 (1971-03-01), Packo
patent: 3770640 (1973-11-01), Bartlett
patent: 4758366 (1988-07-01), Parekh
patent: 4938063 (1990-07-01), Leighley
patent: 5149453 (1992-09-01), Parekh
patent: 5167867 (1992-12-01), Quaife et al.
patent: 5279967 (1994-01-01), Bode

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