Fig 1.
Three-dimensional geometric model of large-span external insulation plastic greenhouse.
Fig 2.
Cross-section coordinate system of the greenhouse.
Fig 3.
Structure parameter diagram of greenhouse and solar beam projection diagram.
Table 1.
Decision variable constraints.
Fig 4.
Comparison of measured and simulated values for typical solar terms.
Fig 5.
Comparison of measured and simulated values of ground shadow contours.
(a) March 22, 2024; (b) April 22, 2024.
Fig 6.
Solar radiation interception distribution on various surfaces of the greenhouse: (a) ground; (b) north lighting roof.
Fig 7.
Daily cumulative solar radiation interception at ground level.
Fig 8.
Spatial distribution of different structured greenhouses at noon on the winter solstice (a): ridge height 5.3, 12m+8m; (b): ridge height 5.3, 11m+9m; (c): ridge height 5.8, 12m+8m; (d): Ridge height 5.8, 11m+9m.
Fig 9.
Daily average solar radiation interception at ground level.
Fig 10.
Ground coefficient of variation.
Fig 11.
Percentage of shaded area for each surface:(a): ground; (b): north lighting roof.
Fig 12.
Convergence curve of HV values of the NSGA-II algorithm.
Fig 13.
Optimization results in a parallel coordinate plot.
Fig 14.
Pareto-front 3D scatter plot.
Table 2.
Comparison analysis between optimization results and initial greenhouse.