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

73 Citations (Scopus)

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 2008

Fingerprint

fog (meteorology)
cooling systems
Greenhouses
Weather
Fog
dynamic analysis
fog
Hydrodynamics
Humidity
computational fluid dynamics
Cooling systems
Dynamic analysis
relative humidity
humidity
Atmospheric humidity
Computational fluid dynamics
fluid mechanics
cooling
greenhouses
contour map

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Control and Systems Engineering
  • Biotechnology
  • Bioengineering
  • Biomaterials

Cite this

3-D CFD analysis of relative humidity distribution in greenhouse with a fog cooling system and refrigerative dehumidifiers. / Kim, Keesung; Yoon, Jeong-Yeol; Kwon, Hyuck Jin; Han, Jin Hee; Eek Son, Jung; Nam, Sang Woon; Giacomelli, Gene A; Lee, In Bok.

In: Biosystems Engineering, Vol. 100, No. 2, 06.2008, p. 245-255.

Research output: Contribution to journalArticle

Kim, Keesung ; Yoon, Jeong-Yeol ; Kwon, Hyuck Jin ; Han, Jin Hee ; Eek Son, Jung ; Nam, Sang Woon ; Giacomelli, Gene A ; Lee, In Bok. / 3-D CFD analysis of relative humidity distribution in greenhouse with a fog cooling system and refrigerative dehumidifiers. In: Biosystems Engineering. 2008 ; Vol. 100, No. 2. pp. 245-255.
@article{0db64e569bb34260b40293c902797e58,
title = "3-D CFD analysis of relative humidity distribution in greenhouse with a fog cooling system and refrigerative dehumidifiers",
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.",
author = "Keesung Kim and Jeong-Yeol Yoon and Kwon, {Hyuck Jin} and Han, {Jin Hee} and {Eek Son}, Jung and Nam, {Sang Woon} and Giacomelli, {Gene A} and Lee, {In Bok}",
year = "2008",
month = "6",
doi = "10.1016/j.biosystemseng.2008.03.006",
language = "English (US)",
volume = "100",
pages = "245--255",
journal = "Biosystems Engineering",
issn = "1537-5110",
publisher = "Academic Press Inc.",
number = "2",

}

TY - JOUR

T1 - 3-D CFD analysis of relative humidity distribution in greenhouse with a fog cooling system and refrigerative dehumidifiers

AU - Kim, Keesung

AU - Yoon, Jeong-Yeol

AU - Kwon, Hyuck Jin

AU - Han, Jin Hee

AU - Eek Son, Jung

AU - Nam, Sang Woon

AU - Giacomelli, Gene A

AU - Lee, In Bok

PY - 2008/6

Y1 - 2008/6

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=43649105509&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=43649105509&partnerID=8YFLogxK

U2 - 10.1016/j.biosystemseng.2008.03.006

DO - 10.1016/j.biosystemseng.2008.03.006

M3 - Article

AN - SCOPUS:43649105509

VL - 100

SP - 245

EP - 255

JO - Biosystems Engineering

JF - Biosystems Engineering

SN - 1537-5110

IS - 2

ER -