Original Title: Filter Dryer in Chiller Refrigeration System A dry filter
installed in the condenser coil outlet liquid line to filter or trap tiny
foreign particles and absorb any moisture or moisture present in the chiller
system. Moisture can cause compressor valve failure and, in the case of hermetic
compressors, often results in breakdown of the motor winding insulation,wiped film evaporator, causing the motor
to short circuit or be grounded. The presence of moisture may reduce the
performance of the lubricating oil and may result in the formation of metallic
or other acidic sludge that can cause clogging or plugging of valves and other
oil circuits. The moisture reacts with the refrigerant to form an acidic
solution. This acidic solution dissolves the copper tubing and extracts the
copper from the copper-based alloys, such as brass or bronze,50l
rotovap, present in different parts of the air conditioning system. This
copper is deposited as "copper plating" in compressor bearings and valves and
can cause system leaks, system vacuuming or improper vacuuming, filter/dryer
failure, nutsche
filter dryer ,wiped film
distillation, oil and refrigerant contamination. The desiccant absorbs
moisture; the desiccant material may be solid or liquid. The solid desiccants
are silica gel, activated alumina, zeolite, titanium dioxide, while the
commercial solid desiccants are activated carbon, metal oxides, and specially
developed porous metal hydrides. Silica gel is one of the best and commonly used
materials in desiccant, which has good long-term stability. However, it is not a
heat resistant material and is therefore only suitable for cryogenic systems. A
common dryer today is a capsule filled with a solid desiccant, such as activated
alumina or zeolite, which has the ability to absorb acid, protecting the bore of
the thermostatic expansion valve from damage by fine debris. Today,rotovap
distillation, the dryer is compatible with all commercially available
refrigerants, including r-410a. Large dryers are manufactured in such a way that
they can be opened to remove the used moisture absorbent and replaced with a new
one, while small dryers are replaced as a complete unit. The suction line
filter-drier is a temporary installation to clean up the system and must be
discarded after use if the pressure is below the set pressure. A clogged dryer
will leave the evaporator with insufficient refrigerant and may cause the
compressor to run longer. Return to Sohu to see more Responsible Editor:. toptiontech.com