Copper tubes are the core carrier for refrigerant transmission in cold storage refrigeration systems. The rationality of their diameter selection and pipeline layout directly determines the efficiency of the refrigeration system and the stability of the unit. Among them, incorrect copper tube diameter selection, excessively long pipes and excessive pressure drop are core hidden dangers that are easy to be ignored but have far-reaching impacts.

         Incorrect copper tube diameter selection: an excessively large diameter will easily lead to slow refrigerant flow rate, resulting in reduced heat exchange efficiency and increased energy consumption; an excessively small diameter will intensify pipeline resistance, increase the operating load of the compressor, accelerate component aging, and lay hidden dangers of failures.

         Excessively long pipes and excessive pressure drop will cause obstruction to refrigerant transmission, increase cooling capacity loss, greatly reduce unit refrigeration efficiency, and at the same time cause unstable system operation, and even lead to chain problems such as increased compressor discharge temperature and accelerated oil deterioration.

         Such hidden dangers originate from the installation and design link. It is necessary to scientifically select the copper tube diameter, reasonably plan the pipeline direction, control the pipeline length, reduce pressure drop, regularly check the pipeline status, eliminate problems such as incorrect diameter, excessively long pipes and excessive pressure drop, and ensure the smooth and efficient operation of the refrigeration system.