Ammonia suction lines operate at sub-zero temperatures. When cold pipes encounter ambient air, moisture condenses on the pipe surface. If unmanaged, this leads to , a primary cause of catastrophic piping failures.
The handbook details how to design piping pitches (slopes) to ensure oil flows back to a central collection point. Iiar Ammonia Refrigeration Piping Handbook Pdf
The Essential Guide to the IIAR Ammonia Refrigeration Piping Handbook Ammonia suction lines operate at sub-zero temperatures
: Oil must be periodically drained or automatically pumped back to the compressor crankcase. Accumulated oil acts as an insulator inside evaporators, drastically reducing heat transfer efficiency. Safety Systems and Code Compliance this leads to
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