Numerical Analysis of Ventilation Efficiency of a Korean Venlo-Type Greenhouse with Continuous Roof Vents

被引：2

作者：

Park, Se-Jun ^{[1
]}

Lee, In-Bok ^{[2
,3
]}

Lee, Sang-Yeon ^{[1
]}

Kim, Jun-Gyu ^{[1
]}

Choi, Young-Bae ^{[1
]}

Decano-Valentin, Cristina ^{[1
,4
]}

Cho, Jeong-Hwa ^{[1
]}

Jeong, Hyo-Hyeog ^{[1
]}

Yeo, Uk-Hyeon ^{[5
]}

机构：

[1] Seoul Natl Univ, Coll Agr & Life Sci, Res Inst Agr & Life Sci, Dept Rural Syst Engn, 1 Gwanakno, Seoul 08826, South Korea

[2] Seoul Natl Univ, Coll Agr & Life Sci, Res Inst Agr & Life Sci, Dept Rural Syst Engn,Global Smart Farm Convergenc, 1 Gwanakno, Seoul 08826, South Korea

[3] Seoul Natl Univ, Res Inst Green Eco Engn, Inst Green Bio Sci & Technol, 1477 Pyeongchang Daero, Daehwa Myeon 25354, South Korea

[4] Mariano Marcos State Univ, Coll Engn, Dept Agr & Biosyst Engn, Batac 2906, Philippines

[5] Elect & Telecommun Res Inst, Agr Anim & Aquaculture Intelligence Res Ctr, 218 Gajeong Ro, Daejeon 34129, South Korea

来源：

AGRICULTURE-BASEL | 2022年 / 12卷 / 09期

关键词：

computational fluid dynamics (CFD); eave height; natural ventilation; venlo greenhouse; NATURAL VENTILATION; PIG HOUSE; SYSTEMS; DESIGN; MODEL; FLOW;

D O I：

10.3390/agriculture12091349

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

A Venlo-type greenhouse with a continuous roof vent (CR-Venlo greenhouse) was proposed by the Ministry of Agriculture, Food and Rural Affairs, South Korea (2019) for natural ventilation even during summers. It is ventilated through the buoyancy effect of the heated air using the high eave elevation. However, the CR-Venlo greenhouse was not distributed domestically, and its ventilation efficiency was not quantitatively evaluated. We aimed to analyze the natural ventilation efficiency of the greenhouse according to the eave height, using computational-fluid-dynamics. The simulation model was analyzed for hot summer conditions. The target greenhouse is ventilated only through the roof vent with all roof windows open; therefore, the air introduced through the roof window is easily exhausted. To evaluate the efficiency of ventilation, the external air entering through the roof window was calculated and evaluated. The amount of incoming air varied greatly with the location of the span and average temperature of the greenhouse; The temperature of the crop zone decreased lognormally with increasing height of the eave. Moreover, the ventilation efficiency of CR-Venlo greenhouse could be increased by improving the ventilation structure such as a shape, position or combination of roof window.

引用

页数：22