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Optimization of the Liquid Distributor in a Falling Film Evaporator by Means of Air‐Water Experiments
Author(s) -
Drumm Christian,
Hoffmann Dieter,
Steffens Friedhelm
Publication year - 2019
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.201800219
Subject(s) - distributor , evaporator , superheating , evaporation , flash evaporation , falling (accident) , materials science , mechanics , head (geology) , flow (mathematics) , thermal expansion valve , environmental science , nuclear engineering , waste management , thermodynamics , mechanical engineering , engineering , physics , geology , heat exchanger , medicine , environmental health , geomorphology
Air‐water experiments (cold‐flow experiments) were performed for the liquid distributor of an industrial falling film evaporator (FFE). The feed to the FFE is superheated and a flash evaporation occurs in the head of the FFE. The aim of the experiments was to investigate the vapor‐liquid flow in the head and the resulting liquid distribution to the evaporator tubes. Several different designs of the distributor were investigated and explanations for the performance losses of the real evaporator over time were found. Several measures were finally concluded and also implemented for the real FFE.