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Developing and validating a dynamic model of water production by direct-contact membrane distillation.

08:00 EDT 24th March 2020 | BioPortfolio

Summary of "Developing and validating a dynamic model of water production by direct-contact membrane distillation."

We consider the development and fitting of a dynamic model for desalinated water production by a direct-contact membrane distillation (DCMD) unit. Two types of dynamic-model structures, namely, lumped parameter and spatial, were evaluated. Both the models were validated using experimental response data generated by step testing the inlet hot stream temperature of a DCMD pilot plant. Both the model structures failed to follow the dynamic response adequately. However, a modification of the model by adding a heat loss term resulted in enhanced predictions for both model structures. The overall relative error in the model-plant mismatch was approximately 3%. This is reasonable considering the random uncertainties associated with the plant operation. This observation also improves our understanding of the importance of using better correlations for heat-transfer coefficients, to develop a more reliable and accurate predictive model for a wide range of operating conditions.

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This article was published in the following journal.

Name: PloS one
ISSN: 1932-6203
Pages: e0230207

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