パーフルオロカーボン液を冷媒とした中容量変圧器巻線の基礎的冷却特性

概要

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To develop a new type of mid-capacity transformer which uses perfluorocarbon liquid as the cooling and insulation medium, the basic flow and cooling characteristics in the windings were investigated. Three two-dimensional winding models having different horizontal and vertical duct spacings and number of coils in a section were used for the test. The models were composed of model conductors which had thermocouples and thin heater pins soldered and wrapped in insulating papers. The actual horizontal duct spacings, the horizontal and vertical temperature distributions of the windings and pressure drop were measured for each of the three models. The flow condition and winding configuration that cause overheating of the conductors were studied, and the influence of ripple or roughness of the insulating paper surface on pressure drop and heat transfer characteristics of the windings was investigated.
一般社団法人日本機械学会の論文
1992-07-25