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Piping

The pipeline systems of refrigerating plants not only have to transport gaseous and liquid refrigerants but also the lubricant. This is why it is of key importance that the correct nominal diameter and the correct pipe routing are selected.

Refrigeration: piping (basic knowledge)

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ET 460

Oil return in refrigeration systems

Transport of lubricants soluble in refrigerant in refrigeration systems; transparent pipes

Learning objectives/experiments

fundamentals of the oil return in refrigeration systems
effect of the rising pipe diameter on the oil transport
effect of partial and full load operation on the oil transport
principle of operation of a double rising pipe
separate or parallel operation of the compressors