Numerical optimization of evaporative misting systems

R. S. Gates, M. B. Timmons, R. W. Bottcher

Research output: Contribution to journalArticlepeer-review


A new method for implementing evaporative misting of broiler houses was developed and investigated. The method consisted of a nonlinear optimization of an objective function for bird comfort, subject to a set of constraints defining a thermal balance on the building. The method predicted the interior state point of the air, the ventilation rate and evaporative efficiency. The misting evaporation rate was specified at different values. The objective function utilized was a temperature-humidity index (THI). Minimizing THI with specified evaporation rates resulted in surprisingly low ventilation rates over an extremely wide range for outside conditions. Comparison of these results with conventional misting operations showed substantial reductions in THI (2° C for a typical case). Application of the proposed new method is discussed.

Original languageEnglish (US)
Pages (from-to)275-280
Number of pages6
JournalTransactions of the American Society of Agricultural Engineers
Issue number1
StatePublished - Jan 1991
Externally publishedYes

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)


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