|Autors: Terziev, A. K., Beloev H., Iliya I., Velkov E.|
Title: Mathematical modeling and experimental study of heat transfer processes of a two-phase thermosiphon with complex geometry
Keywords: two-phase thermosiphon, mathematical modeling, heat transfer, air-heaters
Abstract: The paper presents a mathematical and numerical model for the processes of heat transfer in a two-phase thermosyphon with complex geometry. Three zones of the air heater are distinguishable - vapor zone, adiabatic zone and condensation zone. The processes are conditionally divided into those that take place in the two-phase thermosyphon and those between the air heater and the two tracts (flue gases and fresh air). The experimental study of the coefficients of heat transfer in the evaporation and condensation zones showed that: and . A numerical study of this process was also carried out and it was further established that the initial turbulent intensity was not more than 10%. The data obtained for the distribution of the parameters of the two flows in the vicinity of the heater will be useful in modeling the processes in the two-phase thermosyphon.
Вид: публикация в международен форум, публикация в реферирано издание, индексирана в Scopus