Detectable refrigerant compositions and uses thereof
a technology of detection compositions and refrigerant compositions, applied in the detection of fluid at leakage point, fluid tightness measurement, instruments, etc., can solve the problems of flammability and toxicity of the lower gwp refrigerants, and the difficulty of current apparatus and methods in quantifying leaking carbon dioxide refrigerants, so as to improve the detection effect of refrigerant compositions
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example 1
[0051] Compositions of the present invention were prepared a suitable container. Comparative compositions that did not contain tracer compositions were also prepared. Compositions were then leaked in the vapor phase in the presence of a hand-held Ritchie Yellow Jacket® Accuprobe® heated electrochemical detector. The digital readout scale was 0 (for no detection) to 9 (for maximum detection). Results are shown below.
Detector DigitalCompositionReadingCO20CO2 / 0.05 wt % trans-81,2-dichloroethyleneCO2 / 0.1 wt % HFC-5152a
The data show that addition of tracer enables the detector to detect a CO2 leak, whereas it was unable to detect the leak without tracer present.
example 2
[0052] Compositions of the present invention were prepared in a suitable container. Comparative compositions that did not contain tracer compositions were also prepared. Compositions were then leaked in the vapor phase in the presence of a hand-held TIF Instruments 5650 corona discharge halogen leak detector and the detector reading was recorded based on number of red lights illuminated. Results are shown below.
Detector ReadingComposition(number of red lights)HFC-134a2HFC-134a / 0.1 wt %4trans-1,2-dichloroethyleneCO22CO2 / 0.1 wt % HFC-5152a
The data show that addition of tracer improves the ability of the detector to detect an HFC-134a or CO2 refrigerant leak.
example 3
[0053] Compositions of the present were prepared in a suitable container. Comparative compositions that did not contain tracer compositions were also prepared. Compositions were then leaked in the vapor phase in the presence of a hand-held Ritchie Yellow Jacket® Accuprobe® heated electrochemical detector. The digital readout scale was 0 for no detection to 9 for maximum detection. Results are shown below.
Detector DigitalCompositionReadingHFC-152a1HFC-152a / 0.034wt % trans-1,2-dichloroethyleneHFC-152a / 0.1 wt %4HCFC-22
The data show that addition of tracer improves the ability of the detector to detect an HFC-152a refrigerant leak.
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