CFD Simulation of the Airflow Distribution Inside Cube-Grow

Noh, Arina Mohd; Noor, Hamdan Mohd; Ahmad, Fauzan

doi:10.37934/cfdl.13.12.8189

Cited by 3 publications

(1 citation statement)

References 13 publications

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“…Computational fluid dynamics (CFD) serves as an effective tool for analyzing the uniformity of the internal air environment in controlled indoor plant factories. Using CFD models to perform aerodynamic analyses based on various structures and monitoring points can help to identify issues within the internal environment and develop solutions to improve environmental uniformity [18,[21][22][23]. Incorporating CFD into the analysis of plant factory environments enhances our ability to optimize efficiency and achieve a more uniform atmospheric environment [24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Improvement of Environmental Uniformity in a Seedling Plant Factory with Porous Panels Using Computational Fluid Dynamics

Lee,

Seo,

et al. 2023

Horticulturae

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A seedling plant factory requires precise environmental control to ensure uniform growth within a limited cultivation period. A porous panel exhaust system was installed to maintain a stable and uniform internal environment. To provide optimal temperature, humidity, and airflow, it is necessary to interpret the internal aerodynamics. However, field monitoring has limitations in analyzing the invisible flow patterns. To overcome this limitation, CFD simulations can be utilized to understand internal environmental conditions and uniformity. The objective of this paper is to develop and validate a CFD model of a seedling plant factory with a porous panel for improving the uniformity of the internal environment. Multiple data loggers were evenly installed at various locations inside the seedling plant factory, and 24 h field monitoring was conducted. The average temperature and humidity during the 16 h light period and 8 h dark period were maintained within 1% of the set values, while the regional temperature deviation had an average of 1.65 °C and a maximum of 2.63 °C. The regional humidity deviation had an average of 14.1% and a maximum of 23.8%. The CFD model was designed to analyze the internal environmental uniformity after validation by comparing it with the field monitoring data. The Realizable k-ε turbulence model, which exhibited an error of 4.0% in comparison with the field data, was selected through a validation test among four different turbulence models with the same configuration of the seedling plant factory. The CFD simulation results were interpreted quantitatively and qualitatively, focusing on the airflow, temperature, and humidity distributions caused by the air conditioner and humidifier. Variations in the average temperature of up to 0.5 degrees and velocity differences of 0.28 m/s were observed depending on the location of the cultivation shelves. The locations and causes of stagnant regions resulting from the airflow patterns were identified through the simulations.

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Section: Introductionmentioning

confidence: 99%

Improvement of Environmental Uniformity in a Seedling Plant Factory with Porous Panels Using Computational Fluid Dynamics

Lee,

Seo,

et al. 2023

Horticulturae

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Improvement of Environmental Uniformity in Seedling Plant Factory with Porous Panels Using CFD

Lee,

Seo,

et al. 2023

Preprint

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The seedling plant factory requires precise environmental control to ensure uniform growth within a short time cultivation period. To provide optimal temperature, humidity, and airflow, it is necessary to interpret the internal aerodynamics. However, the analysis based on field experiments has limitations in interpreting the invisible flow patterns. To overcome this limitation, CFD simulations were employed. The objective of this study was to develop and validate a CFD model of the seedling plant factory with the porous panel for improving the internal environment and to identify the fluid dynamics issues using the validated model. Based on the field monitoring data obtained by 90 data loggers, the average temperature and humidity during the 16-hour light period and 8-hour dark period were maintained within 1% of the set values. However, regional differences occurred, which led to the design of a CFD model incorporating the porous panel to simulate these variations. The Realizable k-ε turbulence model, which exhibited an error of 4.0% in comparison with the field data, was selected through validation test among four different turbulence models with the same configuration of the seedling plant factory. The CFD simulation results were interpreted quantitatively and qualitatively, focusing on the airflow, temperature, and humidity distributions caused by the air conditioner and humidifier. Variations in average temperature of up to 0.5 degrees and velocity differences of 0.28 m/s were observed depending on the location of the cultivation shelves. The locations and causes of stagnant regions resulting from the airflow patterns were identified through the simulations.

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Are soilless agriculture technologies a sustainable solution for the future?

YAVUZ,

TOKSÖZ,

BERBER

2023

Frontiers in Life Sciences and Related Technologies

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Geleneksel tarımda bilinçsiz kimyasal kullanımının toprak yapısında değişikliklere yol açarak, toprak verimliliğini olumsuz yönde etkilediği belirtilmektedir. Ayrıca gittikçe artan dünya nüfusu nedeniyle gıda taleplerinin karşılanması için önlemlerin alınması gerekliliği de vurgulanmaktadır. Son yıllarda, alternatif bir çözüm olarak topraksız tarım araştırmaları; iş gücü, zaman, su tasarrufu sağlanması, herbisit/pestisit kullanımının azalması, mikrobiyolojik sıkıntıların ortadan kalkması gibi avantajları olduğu için artmaktadır. Öte yandan, dezavantaj olarak yüksek maliyetlerin düşürülmesi için de girişimlerde bulunulmaktadır. Bazı ülkelerde kentsel tarımın desteklenmesi amacıyla dikey tarım uygulamalarının yapıldığı merkezler bulunmaktadır. Son dönemlerde dikey tarım uygulamaları ile ilgili olarak uzayda bitki yetiştirilmesi, uzay çiftlikleri gibi başlıklar da popülerdir. NASA’nın yürüttüğü projelerde başarıya ulaşılmış olan ürünler bulunmaktadır. Mikro yerçekimi etkisi ile oluşabilecek hasarlar incelenerek, çalışmaların teknolojinin avantajlarıyla daha da ileri götürülmesi amaçlanmaktadır. Ayrıca, gastronomi alanında da topraksız/dikey tarım sürdürülebilirlik açısından son zamanlarda ön plana çıkmaktadır. Bu tekniklerin uygulanarak küçük ölçekli üretimlerin yapıldığı restoranların ön plana çıktığı görülmektedir. Bu derlemede bu konular detaylı olarak irdelenecektir.

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CFD Simulation of the Airflow Distribution Inside Cube-Grow

Cited by 3 publications

References 13 publications

Improvement of Environmental Uniformity in a Seedling Plant Factory with Porous Panels Using Computational Fluid Dynamics

Improvement of Environmental Uniformity in a Seedling Plant Factory with Porous Panels Using Computational Fluid Dynamics

Improvement of Environmental Uniformity in Seedling Plant Factory with Porous Panels Using CFD

Are soilless agriculture technologies a sustainable solution for the future?

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