Review on ice crystallization and adhesion to optimize ice slurry generators without moving components

[Display omitted] •The adhesion of ice depends on the nature and surface condition of the material.•The use of additives improves the production of ice slurry.•Superhydrophobic surfaces increase the delay and degree of supercooling.•Ice adhesion to Teflon (PTFE) or Nylon 11 surfaces is very low.•Sur...

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Bibliographic Details
Published in:Applied thermal engineering 2023-03, Vol.223, p.119974, Article 119974
Main Authors: Samah, Walid, Clain, Pascal, Rioual, François, Fournaison, Laurence, Delahaye, Anthony
Format: Article
Language:English
Subjects:
Engineering Sciences
Ice adhesion
Ice slurry
Ice slurry generator
Phase change materials (PCM)
Secondary refrigeration
Superhydrophobic
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Summary:[Display omitted] •The adhesion of ice depends on the nature and surface condition of the material.•The use of additives improves the production of ice slurry.•Superhydrophobic surfaces increase the delay and degree of supercooling.•Ice adhesion to Teflon (PTFE) or Nylon 11 surfaces is very low.•Surface roughness has an important role on ice adhesion. The current climate crisis requires a radical reduction in energy consumption and greenhouse gas emissions. For the refrigeration industry, secondary refrigeration is one of the most accessible solutions to reduce the use of refrigerants with high greenhouse gas content. In addition, the use of low environmental impact two-phase secondary fluids, namely PCM (Phase Change Material) slurries, such as ice slurries and gas hydrate slurries, can limit the electrical energy consumption involved in the process. Currently, the industry's most commonly used ice slurry production systems are scraped surface and supercooling generators. These have some disadvantages, such as maintenance costs and energy consumption. An ice slurry generator is considered efficient if it meets three criteria: continuous production, low energy consumption and reliable operation. Optimizing ice slurry production with generators without moving components (scraped surface) could be a solution to meet these criteria. The objective of this review is to present a critical analysis of ice slurry production optimization methods proposed in the literature. These methods aim either to prevent ice nucleation to produce supercooled water with a high supercooling degree, or to reduce the adhesion of the ice to the generator walls to facilitate its removal by flow or by external forces (gravity and buoyancy).
ISSN:1359-4311
1873-5606
DOI:10.1016/j.applthermaleng.2023.119974