Cross-flow Two-phase Thermosyphons based on Field Synergy Theory of Condensation Section Heat Transfer Enhancement

Aiming at poor outer convective heat transfer effect for traditional two-phase closed thermo-syphons, and heat transfer performance's improvement for entrainment limit constraints and other issues, by using the field synergy theory, the authors design a new type of two-phase closed thermo-syphon to solve the traditional two-phase closed thermo-syphons condenser section and inhomogeneous external fluid field synergy degree. Cross-sectional area of the steam chamber is determined by sound velocity limit, and according to the evaporator and the condenser section endothermic exothermic basic balance the maximum length of the evaporator section of the new structure is determined. This paper gives the minimum wall thickness for two-phase closed thermo-syphons and minimum cover thickness, the new two-phase closed thermo-syphons has an internal flow channel condenser available for cold fluid passing through to improve section field synergy's uniformity. Cross-flow two-phase closed thermo-syphons design parameters given in this paper is important for practical production significance.