高電圧を利用した垂直細管内空気-冷媒二相スラグ流におけるボイド率の測定

抄録

The purpose of this study is to reveal the characteristics of air-refrigerant two-phase flow, such as frictional pressure drop, void fraction, and so on. The characteristics of slug flow in small diameter pipes have been experimentally investigated by using air and refrigerant (HFE-71IPA) as the test fluids. The refrigerant is a highly insulated liquid. Therefore, a measuring method with high voltage supply applicable to the highly insulated liquid has been developed in order to measure the instantaneous void fraction distribution at the cross-section of the small diameter pipe. The some experiments on instantaneous cross-sectional void fraction distribution in air-HFE-71IPA two phase flow were conducted by using wire-mesh sensor with high voltage. These experimental results were compared with that of water.