All Issue

2020 Vol.29, Issue 1 Preview Page

Original Articles

Field Survey and Analysis of Natural Ventilation Characteristics of Multi-span Greenhouse with Different Roof Vent

연동형 비닐하우스의 환기창 형태 조사 및 자연환기 효과 분석

Min jung Park1
,
Duck kyu Choi1
,
Jin kwan Son1
,
Sung-Wook Yoon1
,
Hee tae Kim1
,
Seung-Kee Lee2
,
Dong hyeon Kang1*
박 민정1
,
최 덕규1
,
손 진관1
,
윤 성욱1
,
김 희태1
,
이 승기2
,
강 동현1*
1Department of Agricultural Engineering, National Institute of Agricultural Sciences, RDA, Wanju 54875, Korea
2Department of Agricultural Engineering, Kongju National University, Kongju 32588, Korea
1농촌진흥청 국립농업과학원 농업공학부
2공주대학교 생물산업공학부
*Corresponding author: kang6906@korea.kr
31 January 2020. pp. 36-42
PDF XML Citation
Abstract

The objectives of this study were to investigate the standard and roof vent type of multi-span greenhouse and to analyze the characteristics of natural ventilation of multi-span greenhouse with different roof vent using computational fluid dynamics (CFD) code. The vent area proportion of surveyed farms averaged 10%, it was analyzed that the vent design for natural ventilation is insufficient. The results of natural ventilation efficiency of multi-span greenhouse according to roof vent type showed that the temperature of the position in which the crops grew was the lowest in the conical roof vent type and the highest in the half conical roof vent type. For the natural ventilation effect, the conical roof vent type was the best one, but the structural stability should be evaluated in light of wind load.

Keywords
CFD
roof vent type
ventilation rate

본 연구에서는 국내에 가장 많이 보급되어 있는 1-2W 모델 연동온실에 대한 온실 규격 및 환기창 형태 실태 조사를 수행하고, 이를 바탕으로 연동온실의 천창 형태에 따른 유동 특성을 분석하기 위해 수치해석을 수행하여 자연환기효과를 분석하고자 하였다. 온실 실태조사 대상농가의 환기창면적 비율은 평균 10%로 자연환기를 위한 시설면적 대비 환기창 면적설계가 부족한 것으로 나타나 환기창 개선이 필요할 것으로 판단된다. 연동 온실의 천창 형태별 자연환기를 해석 및 분석한 결과, 온실 내 작물위치의 온도 분포 및 내외부 온도차는 몽골식 천창 온실에서 가장 낮고 외몽골식 천창 온실에서 가장 높게 나타났으나 추후 풍하중에 의한 구조적인 안전성을 평가해야할 것으로 판단된다.

키워드
환기율
환기창 형태
전산유체역학
References
1
Al-arifi, A. 1999. The influence of shading and evapotranspiration on a ventilated greenhouse environment. Ph.D. Diss., Ohio State Univ., p.48-55.
2
Al-helal, I.M. 1998. A computational fluid dynamics study of natural ventilation in arid region greenhouses. Ph.D. Diss., Ohio State Univ., p.27-35.
3
Bartzanas, T., T. Boulard and C. Kittas. 2004. Effect of vent arrangement on windward ventilation of a tunnel greenhouse. Biosystems Engineering. 88(4): 479-490.
10.1016/j.biosystemseng.2003.10.006
4
Bergman. T.L., A.S. Lavine, F.P. Incropera, and D.P. Dewitt.. 2012. Fundamentals of Heat and Mass transfer. 7th ed. Chichester. United Kingdom.
5
Davide P., J.I. Montero, E. Baeza, and B.J. Bailey. 2012. A CFD greenhouse night-time condensation model. Biosystems Engineering 111(2): 141-154.
10.1016/j.biosystemseng.2011.11.006
6
Hong, S.W., I.B. Lee, H.S. Hwang, I.H. Seo, J.P. Bitog, J.I. Yoo, K.S. Kim, S.H. Lee, K.W. Kim and N.K. Yoon. 2008. Numerical simulation of ventilation efficiencies of naturally ventilated multi-span greenhouses in Korea. Transaction of the ASABE. 51(4):1417-1432.
10.13031/2013.25235
7
Kwon, J.K., S.H. Lee, J.H. Seong, J.P. Moon, S.J. Lee, B.M., K.J. Kim. 2011. Analysis of Natural Ventilation Characteristics of Venlo-type Greenhouse with Continuous Roof Vents. Journal of Biosystems Engineering. 36(6): 444-452.
10.5307/JBE.2011.36.6.444
8
Lee, H.I., W. Moon, and J.I. Son, 2004. Principles of facility cultivation. Korea national open university. Seoul. Korea.
9
Lee, H.J., S.T. Park, S.K. Kim, C.S. Choi, and S.G. Lee. 2017. The effects of high air temperature and waterlogging on the growth and physiological responses of hot pepper. J. Korean Hortic. Sci. Technol. 35(1):69-78.
10.1021/es010517q11811492
10
MAFRA (Ministry of Agriculture, Food and Rural affairs), The status of greenhouse and vegetable production, Sejong-si, Korea (in Korean). 2016.
11
MAFRA (Ministry of Agriculture, Food and Rural affairs), The status of greenhouse and vegetable production, Sejong-si, Korea (in Korean). 2018.
12
Mistriotis, A., G.P.A. Bot, P. Picuno and G. Scarascia-Mug- nozza. 1997. Analysis of the efficiency of greenhouse ventilation using computational fluid dynamics. Agric. For. Meteorol. 85(3):217-228.
10.1016/S0168-1923(96)02400-8
13
Nam. S.W., Y.S. Kim, and D.U. Seo. 2013. Evaluation of natural ventilation performance for multi-span plastic greenhouses. Journal of Bio-Environment Control 22(1): 7-12(In Korean).
10.12791/KSBEC.2013.22.1.007
14
Rasheed, A. J.W. Lee, H.T. Kim, and H.W. Lee. 2019. Efficiency of Different Roof Vent Designs on Natural Ventilation of Single-Span Plastic Greenhouse. Protected Hort. Plant Fac. 28(3):225-233.
10.12791/KSBEC.2019.28.3.225
15
Sethi, V.P., and S.K. Sharma. 2007. Survey of cooling technologies for worldwide agricultural greenhose applications. Solar Energy. 81:1447-1459.
10.1016/j.solener.2007.03.004
16
Song H.W., S.Y. Park, D.G. Kim, and J.W. Lee. 2017. Analysis on the Ventilation Performance by Roof Window Structures of Single-span Greenhouse. Journal of Korean Society of Environmental Technology 18(4): 382-390.
17
Teitel, M., and, E. Wenger. 2014. Air exchange and ventilation efficiencies of a monospan greenhouse with one inflow and one outflow through longitudinal side openings. Biosystems Engineering. 119:98-107.
10.1016/j.biosystemseng.2013.11.001
18
Yu, I.H., E.H. Lee, M.W. Cho, H.R. Ryu, and Y.C. Kim. 2012. Development of multi-span plastic greenhouse for tomato cultivation. Journal of Bio-Environment Control. 21(4): 428-436 (in Korean).
10.12791/KSBEC.2012.21.4.428
Information
  • Publisher :The Korean Society for Bio-Environment Control
  • Publisher(Ko) :(사)한국생물환경조절학회
  • Journal Title :Protected Horticulture and Plant Factory
  • Journal Title(Ko) :시설원예ㆍ식물공장
  • Volume : 29
  • No :1
  • Pages :36-42
  • Received Date : 2019-11-06
  • Revised Date : 2019-12-30
  • Accepted Date : 2020-01-15
  • DOI :https://doi.org/10.12791/KSBEC.2020.29.1.36
Journal Informaiton Journal of Bio-Environment Control Journal of Bio-Environment Control
Online Submission
  • NRF
  • KOFST
  • crossref crossmark
  • crossref cited-by
  • crossref funder-registry
  • crosscheck
  • orcid
  • open access
  • ccl
Journal Informaiton Journal Informaiton - close