3-D CFD analysis of relative humidity distribution in greenhouse with a fog cooling system and refrigerative dehumidifiers

Keesung Kim, Jeong Yeol Yoon, Hyuck Jin Kwon, Jin Hee Han, Jung Eek Son, Sang Woon Nam, Gene A. Giacomelli, In Bok Lee

Research output: Contribution to journalArticle

78 Scopus citations

Abstract

The distribution of humidity in a greenhouse was studied using three-dimensional (3-D) computational fluid dynamics (CFD). The calculations were validated using experimental data from a single-span greenhouse without plants. Two types of humidity distribution were considered: humidifying using a fog cooling system, and dehumidifying using refrigerative dehumidifiers in addition to a fog cooling system. The simulation errors of RH were 0.1-18.4% with a fog cooling system and 1.1-13.1% with a fog cooling system and refrigerative dehumidifiers at each observation point. Contour maps were obtained from the 3-D CFD simulations to locate any non-uniformity in humidity distribution. The use of refrigerative dehumidifiers reduced the overall difference of humidity between the middle and bottom zones of a greenhouse, but the local distribution of humidity was uneven, especially close to the dehumidifiers. This study suggests that the developed 3-D CFD model can be a useful tool in designing and evaluating greenhouses with various configurations.

Original languageEnglish (US)
Pages (from-to)245-255
Number of pages11
JournalBiosystems Engineering
Volume100
Issue number2
DOIs
StatePublished - Jun 1 2008

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Food Science
  • Animal Science and Zoology
  • Agronomy and Crop Science
  • Soil Science

Fingerprint Dive into the research topics of '3-D CFD analysis of relative humidity distribution in greenhouse with a fog cooling system and refrigerative dehumidifiers'. Together they form a unique fingerprint.

  • Cite this