scholarly journals Analysis of factors affecting the efficiency of thermosyphones

2021 ◽  
Vol 1 (1) ◽  
pp. 77-88
Author(s):  
Tyurin M. P. ◽  
◽  
Borodina E. S. ◽  
Keyword(s):  
Mass Transfer ◽  
Physical Properties ◽  
Heat And Mass Transfer ◽  
Two Phase ◽  
Factors Affecting ◽  
Geometric Characteristics ◽  
Evaporation And Condensation ◽  
Working Bodies ◽  
Efficiency And Reliability ◽  
Degree Of Filling

The paper provides a review and analysis of research works aimed at studying the factors that affect the efficiency and reliability of closed two-phase thermosyphons as heat utilizers of heat technological emissions. Factors such as the geometric characteristics of thermosyphons and their ratio, the angles of inclination of the evaporation and condensation surfaces, the degree of filling of the thermosyphon pipe, the state and physical properties of the evaporation and condensation surfaces, the influence of acoustic and vibration influences on the efficiency of heat and mass transfer, as well as their use in as working bodies of nanofluids.

scholarly journals Analysis of factors affecting the efficiency of thermosyphones

2021 ◽  
Vol 1 (1) ◽  
pp. 77-88
Author(s):  
M. P. Tyurin ◽  
◽  
E. S. Borodina ◽  
Keyword(s):  
Mass Transfer ◽  
Physical Properties ◽  
Heat And Mass Transfer ◽  
Two Phase ◽  
Factors Affecting ◽  
Geometric Characteristics ◽  
Evaporation And Condensation ◽  
Working Bodies ◽  
Efficiency And Reliability ◽  
Degree Of Filling

The paper provides a review and analysis of research works aimed at studying the factors that affect the efficiency and reliability of closed two-phase thermosyphons as heat utilizers of heat technological emissions. Factors such as the geometric characteristics of thermosyphons and their ratio, the angles of inclination of the evaporation and condensation surfaces, the degree of filling of the thermosyphon pipe, the state and physical properties of the evaporation and condensation surfaces, the influence of acoustic and vibration influences on the efficiency of heat and mass transfer, as well as their use in as working bodies of nanofluids.

Heat-and-Mass Transfer Intensification in Saturated-Steam Generators in NPP with VVER as a Means for Increasing Efficiency and Reliability

Atomic Energy ◽  
2018 ◽  
Vol 123 (3) ◽  
pp. 154-158 ◽  
Author(s):  
N. D. Agafonova ◽  
M. Yu. Egorov ◽  
V. V. Sergeev ◽  
M. A. Gotovskii ◽  
P. A. Kruglikov ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Saturated Steam ◽  
Steam Generators ◽  
Efficiency And Reliability ◽  
Mass Transfer Intensification

Lyon-Type Integral Forms of Wall Friction, Heat- and Mass Transfer Closure Relationships for Non-Equilibrium Two-Phase Flows: Generalization for Annular and Rod Cluster Geometries

2013 ◽  
Author(s):  
Yuri Kornienko
Keyword(s):  
Boundary Layer ◽  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Constitutive Relations ◽  
Wall Friction ◽  
Transfer Coefficients ◽  
Two Phase ◽  
Friction Heat ◽  
Integral Forms ◽  
Substance Transfer

The main goal of this paper is to describe new approach to constructing generalized closure relationships for pipe, annular and sub-channel transfer coefficients for wall friction, heat and mass transfer. The novelty of this approach is that it takes into account not only axial and transversal parameter distributions, but also an azimuthal substance transfer effects. These constitutive relations, which are primordial in the description of single- and two-phase one-dimensional (1D) flow models, can be derived from the initial 3D drift flux formulation. The approach is based on the Reynolds flow, boundary layer, and substance transfer generalized coefficient concepts. Another aim is to illustrate the validity of the “conformity principle” for the limiting cases. The method proposed in this paper is founded on the similarity theory, boundary layer model, and a phenomenological description of the regularity of the substance transfer (momentum, heat, and mass) as well as on an adequate simulation of the flow structures. With the proposed generalized approach it becomes possible to develop an integrated in form and semi-empirical in maintenance structure analytical relationships for wall friction, heat and mass transfer coefficients.

Sign in / Sign up

Export Citation Format

Share Document