Experimental Study on Transportation of Two-Phase Mixtures Through Horizontal and Inclined Pipes

Abstract

In a hot water type geothermal power plant, it is desirable for higher thermal efficiency and for economical advantages to adopt the double flash cycle with steam-water mixture transportation from wells to the power station site without wellhead separators. To realize the steam-water mixture transportation, some problems such as flow stability and increase of pressure drop, which are not encountered in the transportation of the single phase steam or water, should be clarified. Therefore, steam-water test was carried out at actual geothermal fields to investigate the characteristics of the mixture transportation. And an air-water test have also been carried out in a wider range of the inclination of a pipe to investigate the effect of the inclination.