Results 161 to 170 of about 7,418 (207)

Falling film evaporation of single component liquids

International Journal of Heat and Mass Transfer, 1998
Abstract Heat transfer coefficients for evaporation of single-component liquids in falling films were experimentally measured over an extended range of parameters. By using two different fluids (propylene glycol and water), over a range of absolute pressures, it was possible to extend the existing data base by an order of magnitude in Prandtl numbers.
Abdulmalik A. Alhusseini, Kemal Tuzla, John C. Chen   +2 more
openaire   +1 more source

Numerical investigation on characteristics of falling film in horizontal-tube falling film evaporator

Desalination and Water Treatment, 2014
AbstractHorizontal-tube falling film technology is widely used in multi-effect desalination plant. The film characteristics of falling water film outside the tubes in horizontal-tube falling film evaporator were simulated. The numerical result was compared with the experimental result and they were proven with good agreement.
Qing-gang Qiu, Wei-guo Jiang, Sheng-qiang Shen, Xiao-jing Zhu, Xing-sen Mu   +4 more
openaire   +1 more source

Heat-transfer film coefficients of falling film horizontal tube evaporators

Desalination, 2004
Abstract The film thickness distribution and average thickness outside a horizontal test tube were measured with a film-thickness meter. The effects of liquid load, evaporation boiling point, temperature difference and tube diameter on the film thickness, the waving intensity and, as a result, the heat-transfer film coefficients outside the ...
Li Xu, Murong Ge, Shichang Wang, Yuxin Wang   +3 more
openaire   +1 more source

Mass transfer in evaporating falling liquid film mixtures

AIChE Journal, 1992
We provide the formulation of the governing equations and boundary conditions that describe the evaporation of two-component liquid films falling down a vertical surface. Based on these governing equations, the concentration profile and axially developing Sherwood numbers are calculated by a numerical procedure.
Bryan C. Hoke, John C. Chen
openaire   +1 more source

Experimental and theoretical investigations of falling film evaporation

Heat and Mass Transfer, 2012
In this study, a mathematical model was developed for falling film evaporation in vacuum using heat transfer relations. An experimental device was designed. experimental set-up which was used was equipped with a triangular weir distribution device and it had the ability to record data up to 3 m.
Pehlivan, Hüseyin, Özdemir, Mustafa
openaire   +2 more sources

Factors Affecting Heat Transfer in Falling Film Evaporators

Food and Bioproducts Processing, 1997
Apilot scale single-tube falling film evaporator (2 metres length of heating tube) was used to gain some understanding of the mechanism of evaporation in this type of evaporator. Results obtained from commercial milk evaporators were used to select operating conditions on the pilot evaporator.
H. Chen, R.S. Jebson
openaire   +1 more source

Heat Transfer in Falling Film Evaporators

1992
Falling film evaporators consist of vertically arranged heating surfaces. Tubes are usually used. From these, a liquid flows off in the form of a thin film and is evaporated by the addition of heat. Frequently, in such apparatus, a solvent is to be extracted by evaporation from a solution consisting of a solvent (water or organic solvent) and the ...
openaire   +1 more source

FALLING FILM EVAPORATION OF REFRIGERANTS

Proceeding of International Heat Transfer Conference 10, 1994
J. C. Chen, Kemal Tuzla, Q. Wang
openaire   +1 more source

Falling film evaporator

Vacuum, 1952
openaire   +2 more sources

Modeling and simulation of a helical falling film evaporator to improve its performance and design

Applied Thermal Engineering, 2023
Isaac Canela-Sánchez, David Juarez-Romero, R F Escobar   +2 more
exaly