Detection, causes and nature of refrigerant leakage.

Author(s) : RADFORD P.

Type of article: Periodical article


It is suggested that 70% of refrigerant produced is lost through leakage. The author describes the design of an effective system to detect and monitor leaks. This should detect a refrigerant in quantities down to 50 ppm in air. The method chosen uses a metal oxide semiconductor sensor which is capable of being calibrated and shows repeatable characteristics down to 20 ppm in an aspirated sample. A microcontroller relays the information to a central monitor and display unit. Multiple sensors can be installed and up to 200 sampling points. Monitoring shows that leaks are generally from flared or similar joints and that they can vary from zero to a considerable emission over a temperature change cycle. Defrosting is one cause, vibration another problem. D.W.H.


  • Original title: Detection, causes and nature of refrigerant leakage.
  • Record ID : 1994-3475
  • Languages: English
  • Source: Inst. Refrig., Adv. Proof - 4 p.; 5 fig.
  • Publication date: 1993/11/11
  • Document available for consultation in the library of the IIR headquarters only.


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