CFD simulation and uniformity optimization of the airflow area in chinese language photo voltaic greenhouses utilizing the multifunctional fan–coil unit system

Supplying homogenous and appropriate airflow schemes have been explored in Chinese language photo voltaic greenhouses, which had a optimistic affect on crop yield and high quality. This paper supplied a multifunctional fan–coil unit system (FCU) to help in circulating air. This technique may accumulate the excess warmth of daytime air and launch it to warmth the greenhouse at nighttime. Nevertheless, the primary downside to be confronted was the nonuniform airflow distributions. Thus, this paper aimed to optimize and analyze the location technique of the FCU system for a Chinese language photo voltaic greenhouse utilizing numerical methodology.

The computational fluid dynamics mannequin was constructed to judge the impact of the FCU system on the airflow area and to uphold its validation. The complicated construction of the FCU system was simplified to a fan mannequin by becoming the strain leap and the air velocity to boost the practicality of the simulation mannequin. Lastly, the coefficient of variation was used to optimize 4 parameters: the lean angle, swing angle, peak above the bottom, and form of the outlet baffle. The efficient disturbance velocity proportion was proposed because the analysis index to enhance the turbulence traits. The imply absolute error (MAE) between the measured and simulated values of the air velocity for the 2 planes was 0.06 m/s and 0.09 m/s, and the basis means sq. error (RMSE) was 0.08 m/s and 0.11 m/s.

The simulated outcomes confirmed that the coefficient of variation earlier than optimization was 0.76, and the efficient disturbance velocity percentages of the planes at 0.7 m and 1.0 m from the bottom have been 42.73% and 41.02%, respectively. After optimization, the coefficient of variation was diminished to 0.33, and the efficient disturbance velocity percentages of the 2 planes elevated to 58.68% and 43.73%, respectively. These outcomes considerably improved the uniformity of the inside airflow area. This paper gives a reference for the design and set up of the FCU system.

Lu, Jiarui, He Li, Xueying He, Chengji Zong, Weitang Music, and Shumei Zhao. 2023. “CFD Simulation and Uniformity Optimization of the Airflow Subject in Chinese language Photo voltaic Greenhouses utilizing the Multifunctional Fan–Coil Unit System” Agronomy 13, no. 1: 197. https://doi.org/10.3390/agronomy13010197  

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