Zeolite molecular sieves are commonly used refrigerant desiccants, which are essential in the dehydration process of refrigeration systems. And they are applicable to most refrigerant filters, including refrigerators, freezers, air conditioners, and other refrigeration heat exchanger filters.
Why Need Refrigerant Desiccant?
The water in the system will react with the refrigerant, and the refrigerant hydrolyzes to generate corrosive gases such as hydrogen chloride or fluoride, which can corrode the compressor, pipelines, valves, etc. And the water can also freeze, forming ice blockages in tubes or valves, reducing cooling efficiency or even causing system failure.
Impurities such as acidic substances, waxes, and metal particles can be generated during the operation of the refrigeration system, which need to be dealt with at the same time. And the refrigerant desiccant, can both absorb water and these impurities.
Functions Of Molecular Sieves In Refrigerant Filter
Preventing ice blockage: Zeolite molecular sieves can selectively adsorb water molecules with high efficiency, while they do not adsorb refrigerant molecules, thus preventing ice blockage due to a sudden drop in temperature.
Preventing metal corrosion: Molecular sieves adsorb water and impurities, as well as corrosive substances generated by hydration reactions, thereby preventing corrosion of metal parts in the refrigeration system.
Maintaining refrigerant purity: Molecular sieve desiccant adsorbs moisture and impurities, ensuring the chemical stability of the refrigerant and preventing moisture-induced refrigerant decomposition or performance degradation.
Protecting system components: The refrigerant filters trap debris from compressor wear and contaminants left over from installation, preventing pipe blockage or valve damage. The zeolite desiccant also prevents high-pressure alarms or compressor overheating caused by poor refrigerant circulation.
Molecular Sieves For Refrigeration Dehydration
XH-5 Zeolite Molecular Sieve: It is the basic type of refrigerant desiccant, has a high water adsorption capacity, which can effectively adsorb trace moisture in refrigerant systems. Its good stability and wide compatibility, making it applicable for a variety of common refrigerants.
XH-7 Zeolite Molecular Sieve: It is the advanced version of type XH-5 refrigerant desiccant, exhibits excellent acid adsorption capacity, effectively reducing corrosive substances in the refrigeration system. Moreover, it has strong thermal stability and high mechanical strength, and is suitable for harsh operating conditions such as high pressure cycles.
XH-9 Zeolite Molecular Sieve: It possesses a stable structure under thermal and chemical stress. In addition to high water absorption capacity and excellent acid adsorption performance, its strong anti-breakage ability makes it more applicable for the long term durability requirements of pressure systems.
XH-11 zeolite molecular sieve: It is compatible with a variety of blend environmentally friendly refrigerants and can be dried without destroying the proportion of refrigerant components. It is the preferred zeolite desiccant, particularly for high pressure and temperature refrigeration systems.