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Evaporation of Binary Mixtures in a Pillow Plate Thermosiphon Reboiler

Jasch, Katharina / Lu, Yan / Scholl, Stephan

Pillow plate heat exchangers show promising performance in extending the operating range of thermosiphon reboilers. Here, the evaporation of binary mixtures during natural circulation evaporation in a pillow plate apparatus was investigated. The experimental results show that the thermal performance is dominated by mixture effects and a component system‐dependent minimum is found. The model approach according to Bennett and Chen has proven to reliably estimate the product‐side heat transfer coefficient for pure substances and mixtures with a low boiling point distance. For wide‐boiling mixtures and low pressures the approach must be adjusted.

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Evaporation of Binary Mixtures in a Pillow Plate Thermosiphon Reboiler

Jasch, Katharina / Lu, Yan / Scholl, Stephan

Pillow plate heat exchangers show promising performance in extending the operating range of thermosiphon reboilers. Here, the evaporation of binary mixtures during natural circulation evaporation in a pillow plate apparatus was investigated. The experimental results show that the thermal performance is dominated by mixture effects and a component system‐dependent minimum is found. The model approach according to Bennett and Chen has proven to reliably estimate the product‐side heat transfer coefficient for pure substances and mixtures with a low boiling point distance. For wide‐boiling mixtures and low pressures the approach must be adjusted.

Evaporation of Binary Mixtures in a Pillow Plate Thermosiphon Reboiler

Jasch, Katharina / Lu, Yan / Scholl, Stephan

Pillow plate heat exchangers show promising performance in extending the operating range of thermosiphon reboilers. Here, the evaporation of binary mixtures during natural circulation evaporation in a pillow plate apparatus was investigated. The experimental results show that the thermal performance is dominated by mixture effects and a component system‐dependent minimum is found. The model approach according to Bennett and Chen has proven to reliably estimate the product‐side heat transfer coefficient for pure substances and mixtures with a low boiling point distance. For wide‐boiling mixtures and low pressures the approach must be adjusted.

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Title:

Evaporation of Binary Mixtures in a Pillow Plate Thermosiphon Reboiler

Contributors:

Jasch, Katharina (author) / Lu, Yan (author) / Scholl, Stephan (author)

Published in:

Chemie Ingenieur Technik ; 96 ; 1353-1363

Publication date:

2024-10-01

Size:

11 pages

ISSN:

0009-286X , 1522-2640

DOI:

https://doi.org/10.1002/cite.202300217

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Binary mixture evaporation , Flow boiling model approach , Pillow plate evaporator , Thermosiphon reboiler

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