Abstract
Direct-contact heat-transfer between steam and single liquid column was studied at 0.35--0.89 ata. As the result, nearly constant value of overall heat-transter cofficient was obtained. This valuewas about 1000 (kcal/m2hr0C) and was nearly constant independently of steam pressure, liquidcolumn diameter and liquid flow rate. This fact suggests that the interface resistance of direct-ontact heat-transfer was unexpectedly large.
