Results 1 to 10 of about 325,517 (306)

Establishment of the falling film evaporation model and correlation of the overall heat transfer coefficient [PDF]

open access: yesRoyal Society Open Science, 2019
In order to study the heat transfer of the falling film evaporator with phase change on both sides, in this paper we built the mathematical model and the physical model where the liquid film inside the tube is laminar and turbulent. The film thickness of
Jing Fang, Kaixuan Li, Mengyu Diao
doaj   +2 more sources

Experimental study on a spray and falling-film cooling system

open access: yesCase Studies in Thermal Engineering, 2021
After spraying, the cooling medium retains potential cooling capability and, consequently, can form a falling film to further cool the downward area. In this paper, the flow patterns and the heat transfer coefficients are correlated respectively in the ...
Yuqi Huang   +3 more
doaj   +1 more source

Numerical simulation of flow characteristics of falling film outside coolant pipelines during liquefaction of natural gas

open access: yesYou-qi chuyun, 2022
Falling film evaporation is the core heat transfer mode of spiral-wound heat exchangers used in the liquefaction process of natural gas. In order to study the impact of different Reynolds numbers, outer diameters and spacings of pipeline on the ...
Chongzheng SUN   +5 more
doaj   +1 more source

Condensation, evaporation and boiling of falling films in wickless heat pipes (two-phase closed thermosyphons): A critical review of correlations

open access: yesInternational Journal of Thermofluids, 2020
With the objective of estimating the thermal resistance of a two-phase closed thermosyphon (TPCT), the work presented is a state of the art of condensation and falling film evaporation/boiling correlations.
Valentin Guichet, Hussam Jouhara
doaj   +1 more source

Experimental Study of a Novel Non-Packing Closed Evaporative Cooling Tower with Vertical 3D Deformation Tubes

open access: yesEnergies, 2022
The closed evaporative cooling tower (CECT) is widely used in the field of industrial cooling. At present, most CECTs still mainly adopt the horizontal-tube falling-film cooling method.
Aimin Tu   +5 more
doaj   +1 more source

Heated falling films

open access: yesJournal of Fluid Mechanics, 2007
We present new insights and results for the problem of a film falling down a heated wall: (i) treatment of a mixed heat flux boundary condition on the substrate; (ii) development of a long-wave theory for large Péclet numbers; (iii) refined treatment of the energy equation based on a high-order Galerkin projection in terms of polynomial test functions ...
Trevelyan, Philip   +3 more
openaire   +3 more sources

The experimental study and numerical simulation of falling liquid film flow on horizontal tubes [PDF]

open access: yes, 2014
This research is motivated by two observations: No report has been found so far in studies of water falling film up to 100 mm intertube spacing. No simulation analysis of film thickness under influence of intertube spacing in 3 dimensional models ...
Abdul Rahim, Ruzairi   +10 more
core   +3 more sources

Modelling of the coupling hydrodynamic transfer for a gas-liquid countercurrent flow on a wavy surface [PDF]

open access: yes, 2003
This paper concerns laminar countercurrent gas–liquid flow over a wavy wall column, in the case of a falling liquid film. The modelling concerns the coupling of hydrodynamic and heat and mass transfer for an absorption as an example of application.
Meyer, Michel   +2 more
core   +2 more sources

Heat Transfer Enhancement of Falling Film Evaporation on a Horizontal Tube by Thermal Spray Coating

open access: yesApplied Sciences, 2020
Falling film evaporators are gaining popularity as substitutes to typical flooded evaporators because of their low refrigerant charge. It is important to form and keep a thin liquid film on the heat transfer surface to ensure their high heat transfer ...
Tsutomu Ubara   +2 more
doaj   +1 more source

Experimental Study of Simultaneous Heat and Mass Transfer in Falling Film and Bubble Mode (LiCl) Absorbers [PDF]

open access: yesEngineering and Technology Journal, 2012
The study involves lithium-Chloride absorption process for the falling film and bubble columns absorbers, working at the same operating conditions. The results obtained were used to analyze the transfer process during the absorption of water vapor in the
Kamal M. Ahmad   +2 more
doaj   +1 more source

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