Q15-2 Vacuum Condensation: Experimental Capability and Initial Intube Data

Z. H. Yang

HTRI designed and constructed the Low Pressure Condensation Unit (LPCU) to conduct experiments on condensation in vacuum. Intube downflow condensation data have been collected from three pure fluids: n-heptane, n-octane, and water. The inlet pressure ranged from 0.4 to 31 kPa (3.0 to 230 Torr), and the condensation flow regime varied from mist flow to gravity-controlled flow. We plan to use these data to evaluate and improve our methods. In this article, we describe the experimental apparatus and present the initial data.