| 摘要 |
FIELD: heating. ^ SUBSTANCE: invention refers to heating engineer, particularly to vertical film-type heat-exchange apparatuses, and can be used in microbiological, chemical and medical industry for heat removal during biosynthesis in bioreactors. Film-type heat-exchange apparatus contains heat-exchange element connected to cooling water inlet and outlet manifolds and provided with filming agents under water inlet manifold, and built in working medium tank with aerator mounted in its lower part. Heat-exchange element is formed with coaxial shell rings mutually composing end-closed circular channel with heat-transmitting walls that are shell rings. Filming agents are mounted in circular channel above one another open relative to heat-transfer walls and designed as ring plates arranged at the angle to one another to form circular clearance in V-shaped section with apex turned towards water flow. The first filming downstream agent is provided with through overflow holes mounted on apex of ring element, and contains passageways formed by side and lower walls. Lower wall of these passageways is close to lower bottom of V-shaped ring element. ^ EFFECT: higher heat-transfer coefficient due to provided more uniform filming along the whole length of heat-transfer passage. ^ 3 cl, 5 dwg |
