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Qualitative investigation of the flow behaviour during falling film evaporation of a dairy product

Mathias Gourdon (Institutionen för energi och miljö, Industriella energisystem och -tekniker ) ; F. Innings ; A. Jongsma ; Lennart Vamling (Institutionen för energi och miljö, Industriella energisystem och -tekniker )
Experimental Thermal and Fluid Science (0894-1777). Vol. 60 (2015), p. 9-19.
[Artikel, refereegranskad vetenskaplig]

Falling film evaporation is an important technology in the dairy industry for producing powders. In this paper, flow details of liquid falling films have qualitatively been investigated using a pilot evaporator, and in particular using a high-speed camera. Variations with different dry solids contents, flow rates and driving temperature differences were investigated. The flow characteristics were seen to be considerably affected by all three variables. Two of the main observations were the formation of bubbles under evaporative conditions and that the flow, bubble formation and evaporative heat transfer coefficient was observed to be heat flux dependent.

Nyckelord: Falling film, Evaporation, Flow characteristics, Heat transfer, Dairy products



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Denna post skapades 2015-01-08. Senast ändrad 2015-06-23.
CPL Pubid: 210298

 

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Institutioner (Chalmers)

Institutionen för energi och miljö, Industriella energisystem och -tekniker (2015-2017)

Ämnesområden

Energi
Kemiteknik

Chalmers infrastruktur