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In order to keep the freshness of fishes for a long duration, the large capacity refrigerators are often used in the refrigerated carriers or fishing boats. In such cases, the use of screw type refrigerators in a way to attend this purpose.<BR>In general, the lubricating oil discharged from the compressor is separated in the oil separator. But, the small particles in oil mist are conveyed to the cooling pipe line by the refrigerant gases and stick on the inner wall of the pipe. This reduces to increase the thermal resistance in the heat exchanger.<BR>In the screw type refrigerators, especially, the lubricating oil consumptions show larger value than the reciprocating type refrigerator because of the oil injection to the screw compressor part. So, the reduction of the lubricating oil consumptions in the screw type refrigerators is the important problem not only to keep the high heat transfer rate in the heat exchanger but also to reduce the refrigerating cost.<BR>From these point of view, in this paper, an experimental research was performed to separate the small size oil particles in the refrigerant gases by the electric field. Namely, applying the phenomena that the oil particles from the nozzle has the electric charge, the separation of the oil particles which could not be separated in. the ordinary type oil separator is treated.<BR>As the results of this study, it is found that this method is applicable to the practical system to separate the small size oil particles in the refrigerator.
公益社団法人日本マリンエンジニアリング学会の論文

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