Premium
Design of falling‐film evaporators in the dairy industry
Author(s) -
BOUMAN S,
WAALEWIJN R,
JONG P DE,
LINDEN H J L J VAN DER
Publication year - 1993
Publication title -
international journal of dairy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.061
H-Index - 53
eISSN - 1471-0307
pISSN - 1364-727X
DOI - 10.1111/j.1471-0307.1993.tb01256.x
Subject(s) - evaporator , evaporation , heat transfer , boiling , heat transfer coefficient , materials science , mechanics , thermodynamics , mechanical engineering , engineering , heat exchanger , physics
The design of falling‐film evaporators for dairy products has hitherto been based on empirical correlations for the heat transfer in the evaporator tubes. With a one‐tube evaporator experiments with whole and skim milk were performed to determine the heat transfer and pressure drop in evaporator tubes. Two evaporation regimens are important for dairy products: convection boiling at lower heat fluxes and nucleate boiling at larger heat fluxes. Correlations have been derived. Based on the results obtained, a computer program, EvaDes (Evaporator Design), for the optimal design of multistage falling‐film evaporators for dairy products has been developed. It quantifies the heat‐transfer area of the stages for different arrangements, process conditions and dimensions of the evaporator tubes.