Cleaning of thick films using liquid jets

Jessica P. Tuck, Federico Alberini, Dick Ward, Bill Gore, Peter J. Fryer*

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)
216 Downloads (Pure)


Cleaning of process plants is important to ensure product purity and safety. Cleaning is however expensive with respect to energy, waste and time. It is important to be able to minimise losses from cleaning, by maximising product recovery and reducing waste. Viscous food and personal care products can form thick layers on process surfaces. Cleaning of a surface by a water jet has been studied here. Two modes of cleaning are identified experimentally; for thin films, cleaning is by formation of a crater that expands with time, whilst for thick films a 'blister' forms in which water spreads underneath the deposit. The blister eventually cleans, but over a much longer timescale than for the thinner film. The cleaned area after 10 seconds is comparable in size to the blister area after less than half a second of cleaning. This behaviour has implications for the cleaning of real systems.

Original languageEnglish
Pages (from-to)93-99
Number of pages7
JournalEnergy Procedia
Early online date18 Mar 2019
Publication statusE-pub ahead of print - 18 Mar 2019
Event2nd International Conference on Sustainable Energy and Resource Use in Food Chains, ICSEF 2018 - Paphos, Cyprus
Duration: 17 Oct 201819 Oct 2018


  • Cleaning
  • Impinging jet
  • Thick Film
  • Waste Minimisation

ASJC Scopus subject areas

  • General Energy


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