Performance Study of Eductor with Finite Secondary Source for Membrane Distillation

Ravi Koirala, Xing Zhang, Eliza Rupakheti, Kiao Inthavong and Abhijit Date ()
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Ravi Koirala: School of Engineering, RMIT University, Melbourne, VIC 3083, Australia
Xing Zhang: School of Engineering, RMIT University, Melbourne, VIC 3083, Australia
Eliza Rupakheti: School of Engineering, RMIT University, Melbourne, VIC 3083, Australia
Kiao Inthavong: School of Engineering, RMIT University, Melbourne, VIC 3083, Australia
Abhijit Date: School of Engineering, RMIT University, Melbourne, VIC 3083, Australia

Energies, 2022, vol. 15, issue 22, 1-19

Abstract: This is an experimental work performed to identify the influence of direct contact condensation inside an eductor. The fluid used in the experiments is water in two different phases: liquid and vapor, for primary and secondary flows, respectively. This study was conducted in an attempt to establish the suitability of an eductor as a combined vacuum generator and condenser for membrane desalination applications. The pressure and temperature measurements at critical points in the flow paths have been summarized to identify the influence of primary flow on secondary fluid saturation and condensation. In addition, the mechanism of phase change has been explained through the photography of fluid flow in a two-dimensional eductor. A consistent oscillation of the gas-liquid interface was observed during steady-state operations of the eductor. This work also contributes to the validation of future computational research. It will provide a baseline for computational thermal fluid analysis related to the mixing of condensing and non-condensing flow. In general, the research encompasses the practical operational scenario and provides information on the heat and mass transfer of direct contact condensation with a finite secondary source.

Keywords: eductor; condensation; saturation; experiment; mechanism visualization (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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