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http://dx.doi.org/10.5307/JBE.2011.36.6.444

Analysis of Natural Ventilation Characteristics of Venlo-type Greenhouse with Continuous Roof Vents  

Kwon, Jin-Kyeong (Dept. of Agricultural Engineering, National Academy of Agricultural Science, Rural Development Administration)
Lee, Sung-Hyun (Dept. of Agricultural Engineering, National Academy of Agricultural Science, Rural Development Administration)
Seong, Jae-Hoon (Dept. of Agricultural Engineering, National Academy of Agricultural Science, Rural Development Administration)
Moon, Jong-Pil (Dept. of Agricultural Engineering, National Academy of Agricultural Science, Rural Development Administration)
Lee, Soo-Jang (Dept. of Agricultural Engineering, National Academy of Agricultural Science, Rural Development Administration)
Choi, Byeong-Min (Dept. of Agricultural Engineering, National Academy of Agricultural Science, Rural Development Administration)
Kim, Kyeong-Ja (Dept. of Agricultural Engineering, National Academy of Agricultural Science, Rural Development Administration)
Publication Information
Journal of Biosystems Engineering / v.36, no.6, 2011 , pp. 444-452 More about this Journal
Abstract
In this study the characteristics of natural ventilation of Venlo-type greenhouse with continuous roof vents were analyzed using commercial computational fluid dynamics (CFD) code. Developed CFD simulation model was verified by comparison with experimental data. Simulation errors were 1.9-46.0% for air velocity and 1.7-11.2% for air temperature at each measurement point. CFD simulations were conducted to estimate the effect of roof vents opening direction, opening angle, outside wind velocity and wind directions on ventilation rate and climate condition in greenhouse. The results of this study showed that ventilation rate of the present greenhouse was increased linearly in proportion to the increase of roof vent opening angle and outside wind velocity over 2.0 m/s. According to the analysis on the effects of different roof vent opening direction, simultaneous opening of wind and leeward vents showed the highest ventilation rate and lowest mean temperature in greenhouse.
Keywords
CFD simulation; Natural ventilation; Ventilation rate; Venlo-type greenhouse;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Wang, S. and J. Deltour. 1996. An experimental ventilation function for large greenhouses based on a dynamic energy balance model. J. Agric. Eng. 5(3&4):103-112.
2 Wang, S. and J. Deltour. 1999. Airflow patterns and associated ventilation function in large-scale multi-span greenhouses. Trans. of the ASAE 42(5):1409-1414.   DOI
3 Yang, D. K. Nakano, D. Derano, H. Yan, S. Ohashi and Q. Chen. 2009. Numerical analysis on microclimate inside single-span naturally ventilated greenhouse under various wind speeds and directions using CFD. J. SASJ. 40(2):133-142.
4 Yu, I. H, N. K. Yun, M. W. Cho and I. B. Lee. 2008. Analysis for aerodynamic resistance of chrysanthemum canopy through wind tunnel test. J. Bio-Env. Con. 17(2): 83-89. (In Korean)   과학기술학회마을
5 Lee, I. B, N. K. Yun, T. Boulard, J. C. Roy, S. H. Lee, G. W. Kim, S. K. Lee and S. H. Kwon. 2006. Development of an aerodynamic simulation for studying microclimate of plant canopy in greenhouse-(2) development of CFD model to study the effect of tomato plants on internal climate of greenhouse. J. Bio-Env. Con. 15(4):289-295. (In Korean)   과학기술학회마을
6 Miguel, A. F. 1998. Airflow through porous screens from theory to practical consideration. Energy and Building. 28:63-69.   DOI   ScienceOn
7 Mistriotis, A., G. P. A. Bot, P. Picuno and G. Scarascis Mugnozza. 1997. Analysis of the efficiency of greenhouse ventilation using computational fluid dynamics. Agric. For. Meteorol. 85: 217-228.   DOI   ScienceOn
8 Papadakis, G., M. Mermier, J. F. Meneses and T. Boulard. 1996. Measurements and analysis of air exchange rates in a greenhouse with continuous roof and side openings. J. Agric. Eng. 25(9):127-133.
9 Moriyama, H., S. Sase, Y. Uematsu and T. Yamaguchi. 2008. Wind pressure coefficient of a pipe-framed greenhouse and influence of the side gable opening using a wind tunnel, Journal of the Society of Agricultural Structures, Japan 38(4):237-248. (In Japanese)
10 Okushima, L., S. Sase, T. Maekawa and A. Ikeguchi. 1998. Airflow patterns forced by wind effect in venlo type greenhouse. Journal of the Society of Agricultural Structures, Japan 29(3): 159-167. (In Japanese)
11 Richard, P. J. and R. P. Hoxey. 1993. Appropriate boundary conditions for computational wind engineering models using the $k-\varepsilon$ turbulence model. Journal of Wind Engineering and Industrial Aerodynamics. 46&47:145-153.
12 Sase. S., T. Kakakura and M. Nara. 1984. Wind tunnel testing on airflow and temperature distribution of a naturally ventilated greenhouse. Acta Horticulture 148:329-336.
13 Sase, S., T. Kozai, M. Nara and H. Negishi. 1980. Ventilation of greenhouse. I. Wind tunnel measurement of pressure and discharge coefficients for a single-span greenhouse. J. Agr. Met. 36(1):3-12.   DOI
14 Bartzanas, T., T. Boulard and C. Kittas. 2002. Numerical simulation of the airflow and temperature distribution in a wind tunnel greenhouse equipped with insect-proof screen in openings. Computers and Electronics in Agriculture 34:207-221.   DOI   ScienceOn
15 Benet C. O. and J. E. Myers. 1995. Momentum, Heat and Mass transfer. McGraw-Hill. New York. USA.
16 Boulard, T., J. F. Meneses, M. Mermier and G. Paradakis. 1996. The mechanisms involved in the natural ventilation of greenhouse. Agric. For. Meteorol 79:61-77.   DOI   ScienceOn
17 Fernandez, J. E. and B. J. Bailey. 1992. Measurement and prediction of greenhouse ventilation rates. Agric. For. Meteorol 58:229-245.   DOI   ScienceOn
18 Boulard, T. and S. Wang. 2002. Experimental and numerical studies on the heterogeneity of crop transpiration in a plastic tunnel. Computers and Electronics in Agriculture 34:173-190.   DOI
19 Bruse, M. 1998. Development of numerical model for the simulation of exchange processes between small scale environmental design and microclimate in urban areas. Ph. D. Thesis. University of Bochum, Germany.
20 Fatnassi, H., T. Boulard, C. Poncet and M. Chave. 2006. Optimisation of greenhouse insect screening with computational fluid dynamics. Biosystems Engineering 3(93):301-312.   DOI   ScienceOn
21 FLUENT 6.2 2005. User's Guide FLUENT inc. New Hampshire, USA.
22 Haxaire, R. 1999. Caracterisation et Modelisaton des ecoulements d'air dans uneserre. Ph.D. Thesis. Universite de Nice, Sophia Antipolis, France.
23 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.   DOI
24 Kittas, C., B. Draoui and T. Boulard. 1995. Quantification of the ventilation of a greenhouse with a roof opening. Agric. For. Meteorol 77:95-111.   DOI   ScienceOn