Effects of vent opening, wind speed, and crop height on microenvironment in three-span arched greenhouse under natural ventilation

Lyu, Xin; Xu, Yuqing; Wei, Min; Zhang, Guanshan; Wang, Shaojie

doi:10.1016/j.compag.2022.107326

Cited by 9 publications

(2 citation statements)

References 36 publications

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“…In hot summer seasons, when external temperatures are excessively high, relying solely on natural ventilation may not fulfill the temperature requirements for mushroom growth. Nevertheless, natural ventilation offers advantages such as low energy consumption and practicality [26]. It can be effectively utilized during the spring and autumn seasons to reduce production costs.…”

Section: Discussionmentioning

confidence: 99%

A Study on the Impact of Different Cooling Methods on the Indoor Environment of Greenhouses Used for Lentinula Edodes during Summer

He,

Wu,

Jiang

et al. 2023

Agriculture

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The shitake mushroom (lentinula edodes) industry in the Gobi Desert region of southern Xinjiang has experienced rapid development and has reached a certain scale. To clarify the laws governing different cooling methods in greenhouses and identify suitable cooling methods for mushroom production in the Gobi Desert region, this study focused on monitoring the environmental changes in greenhouses using three different cooling methods: natural ventilation cooling, water-sprinkling roof cooling, and a fan and pad cooling system. The results showed that when combined with external shading (shade netting), natural ventilation cooling, fan and pad cooling, and water-sprinkling roof cooling, respectively, reduced the air temperature by 8.6 °C, 14.0 °C, and 15.2 °C. They also increased the relative humidity by 15.3%, 43.3%, and 51.2%, resulting in cooling efficiencies of 28.5%, 56.3%, and 68.1%, respectively. The water-sprinkling roof cooling system demonstrated the best cooling effect and temperature uniformity and had higher economic benefits. Therefore, the use of the external sprinkler cooling method in double-skeleton greenhouses is suitable for summer lentinula edodes production in the Gobi Desert region of southern Xinjiang.

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Section: Discussionmentioning

confidence: 99%

A Study on the Impact of Different Cooling Methods on the Indoor Environment of Greenhouses Used for Lentinula Edodes during Summer

He,

Wu,

Jiang

et al. 2023

Agriculture

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“…Rotating roofs effectively block wind force, mitigating the risk of excessive wind speeds at the opening and ensuring indoor comfort to some extent. When designing stadiums, the appropriate retractable roof forms can be selected based on specific requirements [45,46].…”

Section: The Common Forms Of Retractable Roofsmentioning

confidence: 99%

Thinking of Green, Low Carbon, and Energy-Saving Designs Based on the Variable Ventilation of Natatoriums: Taking the Jiading Natatorium of Tongji University as an Example

Qian,

Shi,

Yang

2024

Sustainability

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With the increasing demand for sports activities, sports architecture is flourishing. Creating a comfortable and healthy fitness environment while reducing energy consumption has become a focus for architects. Taking the Jiading Natatorium at Tongji University in Shanghai as an example, this study researched green energy in the variable ventilation of sports venues. The Autodesk Ecotect Analysis 2011 was used to conduct computational fluid dynamics (CFD) simulation analyses on four scenarios of opening and closing the swimming pool’s roof, with ventilation velocity as the primary evaluation indicator to assess the ventilation environment of each scenario. The relationship between the opening ratio of the roof and the ventilation environment of sports buildings was explored. The results showed that when the opening ratio is 37.5%, it achieves good ventilation effectiveness and avoids excessive wind pressure. The study also summarized six common forms of opening and closing roof structures and compared the differences in wind environments of different roof forms. The results indicated that the shape and opening ratio of the roof has a decisive impact on the distribution of indoor wind speed in buildings. Six optimal opening ratios for different roof forms in summer and suitable site conditions were summarized, providing a reference for the design and selection of swimming pool roofs. Furthermore, the wind speed distribution of different roof types showed a trend of gradually becoming uniform with the increase in opening area. However, the position of the wind speed peak is related to the form and size of the roof opening. This research provides valuable references for the low carbon and energy-efficient design of future swimming pool sports buildings.

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Numerical Modeling of Turbulent Natural Ventilation Inside a Microclimate of a Solar Greenhouse

Bezari,

Lebbi,

Adda

et al. 2024

Springer Proceedings in Energy

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Effects of vent opening, wind speed, and crop height on microenvironment in three-span arched greenhouse under natural ventilation

Cited by 9 publications

References 36 publications

A Study on the Impact of Different Cooling Methods on the Indoor Environment of Greenhouses Used for Lentinula Edodes during Summer

A Study on the Impact of Different Cooling Methods on the Indoor Environment of Greenhouses Used for Lentinula Edodes during Summer

Thinking of Green, Low Carbon, and Energy-Saving Designs Based on the Variable Ventilation of Natatoriums: Taking the Jiading Natatorium of Tongji University as an Example

Numerical Modeling of Turbulent Natural Ventilation Inside a Microclimate of a Solar Greenhouse

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