Here, we present the range analysis method to optimize the sample points generated by an orthogonal experimental design to ensure that fresh food can be stored in a vented box for a long time by regulating the airflow pattern.
A subscription to JoVE is required to view this content. Sign in or start your free trial.
Method Article
Design and Optimization Strategies of a High-Performance Vented Box
In This Article
Summary
Abstract
This study aims to solve the problems of air flow chaos and poor performance in a vented box caused by the heterogeneous distribution of airflow through the design of the internal structure of the vented box with constant energy consumption. The final goal is to evenly distribute the airflow inside the vented box. Sensitivity analysis was performed for three structural parameters: the number of pipes, the number of holes in the middle pipe, and the number of each increment from the inside to the outside pipe. A total of 16 random array sets of three structural parameters with four levels were determined using the orthogonal experimental design. Commercial software was used for the construction of a 3D model for the selected experimental points, and this data was used to obtain the airflow velocities, which were then used to obtain the standard deviation of each experimental point. According to the range analysis, the combination of the three structural parameters was optimized. In other words, an efficient and economical optimization method considering the performance of the vented box was established, and it could be widely used to extend the storage time of fresh food.
Introduction
Fresh vegetables and fruits occupy a high proportion of human food consumption, not only because they have good taste and an attractive form, but also because they are of great benefit for people to obtain nutrition and maintain health1. Many studies have shown that fresh fruits and vegetables play a unique role in preventing many diseases2,3. In the storage process of fresh fruits and vegetables, fungi, light, temperature, and relative humidity are the important reasons for their deterioration4,5,6<....
Access restricted. Please log in or start a trial to view this content.
Protocol
1. Pre-simulation processing
NOTE: Considering the arrays of pipes, the three-dimensional bottom half and the top half of the vented box models are established by using three-dimensional software and saving them as X_T files, the overall dimensions are shown in Figure 1. Configurations are shown in the table of materials.
- Run the simulation software and drag the Mesh component from the "Component Systems" to the "Project Schematic" window. Name it "the bottom". Right-click Geometry and click Browse to import ....
Access restricted. Please log in or start a trial to view this content.
Results
Following the protocol, the first three parts were the most important, which include modeling, meshing, and simulation, all in order to obtain the standard deviation of the flow rate. Then, we completed the structure optimization of the vented box through orthogonal experiments and range analysis. The model used in the protocol is the reference-vented box model, which is the initial model obtained from the reference. Figure 4 shows the result of the streamlined flow of the reference vented b.......
Access restricted. Please log in or start a trial to view this content.
Discussion
Due to its high performance and complex structure, in this study, we built a ventilated box based on modeling software. We analyzed the internal flow by simulation software. Simulation software is known for its advanced physics modeling capabilities, which include turbulence modeling, single- and multiphase flows, combustion, battery modeling, fluid-structure interaction, and much more. The sample selection method used in this paper is the orthogonal experimental design method, which is suitable for mechanical production.......
Access restricted. Please log in or start a trial to view this content.
Disclosures
The authors have nothing to disclose.
Acknowledgements
This research is supported by Wenzhou Science and Technology Bureau of China (Wenzhou major scientific and technological innovation project under Grant No. ZG2020029). The research is funded by the Wenzhou Association for Science and Technology with Grant No. KJFW09. This research was supported by the Wenzhou Municipal Key Science and Research Program (ZN2022001).
....Access restricted. Please log in or start a trial to view this content.
Materials
| Name | Company | Catalog Number | Comments |
|---|---|---|---|
| Hardware | |||
| NVIDIA GPU | NVIDIA | N/A | An NVIDIA GPU is needed as some of the software frameworks below will not work otherwise. https://www.nvidia.com |
| Software | |||
| Ansys-Workbench | ANSYS | N/A | Multi-purpose finite element method computer design program software.https://www.ansys.com |
| SOLIDWORKS | Dassault Systemes | N/A | SolidWorks provides different design solutions, reduces errors in the design process, and improves product quality www.solidworks.com |
| SPSS | IBM | N/A | Software products for statistical analytical operations, data mining, predictive analysis, and decision support tasks software.https://www.ibm.com |
References
- Villa-Rodriguez, J. A., et al. Maintaining antioxidant potential of fresh fruits and vegetables after harvest. Critical Reviews in Food Science and Nutrition. 55 (6), 806-822 (2015).
- Mozaffari, H., Lafrenière, J., Conklin, A.
Access restricted. Please log in or start a trial to view this content.
Reprints and Permissions
