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Leak testing

Refrigerant loss can have a direct impact on global warming, will eventually lead to inefficient and unreliable. The EU F-gas Regulation no 842/2006 entered into force in 2007. Operators HFC equipment to prevent leakages, assure leak check and repair any leaks as soon as possible, and ensure adequate recovery of refrigerant. Detailed requirements regarding the frequency of mandatory checks, staff, and other questions can be obtained from Institute of Refrigeration (IOR). Some types of equipment you will need guides containing information on HFCs in use. Clarify some points continues and installers should constantly update through IOR website.

The study of types of leakage and the methods for their minimization was made Bostock (2007). To determine if the leak exists, the new equipment may remain under pressure tightness of the pressure for a night or more for a long time, and any pressure drop is noted. Pressure temperature change, and so it must be taken into account. Another option is to leave the equipment under vacuum during a certain period.

The traditional method for the search of leakages is the use of soap and water. Many people discount it, but for the search of leakages is perhaps the most effective approach successfully you can find very small leaks. All leaks that need to be fixed to the equipment commissioning.

Electronic leak detectors are now widely used. Details of various types and their suitability for different refrigerants can be found in the IOR service Engineers bulletins. It is important to use the detector sensitive enough, he should be able to detect loss of 5 g/year. Fluorescent additives can be added to a system, and, when committed round oil leakage can be accurately with ultraviolet lamp. The plant should be cleaned after use and any additions dye to the system must be noted because the unlimited use may worsen oil.


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