Analysing transfer phenomena in osmotic evaporation

作者：Forero Longas Freddy; Velez Pasos Carlos Antonio

来源：Revista Ingenieria e Investigacion, 2011, 31(3): 40-49.

• concentration
• mass transfer
• heat transfer
• hydrophobic membrane
• diffusion

Osmotic evaporation is a modification of traditional processes using membranes; by means of a vapour pressure differential, produced by a highly concentrated extraction solution, water is transferred through a hydrophobic membrane as vapour. This technique has many advantages over traditional processes, allowing work at atmospheric pressure and low temperatures, this being ideal for heatsensitive products. This paper presents and synthetically analyses the phenomena of heat and mass transfer which occurs in the process and describes the models used for estimating the parameters of interest, such as flow, temperature, heat transfer rate and the relationships that exist amongst them when hollow fibre modules are used, providing a quick reference tool and specific information about this process.

• 出版日期2011-12