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

1993-06-25

1994-10-25

Noland, Thomas P.

Measuring and testing

With fluid pressure

Leakage

250301, 252964, 252963, 252962, G01N 3700

Patent

active

053577825

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

REFERENCES:
patent: 2096099 (1937-10-01), Gaugler
patent: 3572085 (1971-03-01), Packo
patent: 3770640 (1973-11-01), Bartlett
patent: 4758366 (1988-07-01), Parekh
patent: 5279967 (1994-01-01), Bode

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