Simulation and Optimization Design of Pressure Bearing Capacity of Folding Flat Tube with Microchannel
As an important part of a parallel flow condenser, folded tube has a good ultimate bearing capacity and is expected to gradually replace the conventional extruded tube. This paper presents the mechanism, simulation, and experimental analysis of a folding pipe. The numerical curves of the stress and...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Journal of Refrigeration Magazines Agency Co., Ltd.
2019-01-01
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| Series: | Zhileng xuebao |
| Subjects: | |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2019.04.089 |
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| Summary: | As an important part of a parallel flow condenser, folded tube has a good ultimate bearing capacity and is expected to gradually replace the conventional extruded tube. This paper presents the mechanism, simulation, and experimental analysis of a folding pipe. The numerical curves of the stress and strain of folded tube materials were obtained by fitting experimental data. The material parameters were imported into ANSYS to develop a simulation model of folded tube blasting. The simulated blasting value of this model was consistent with the experimental blasting value of 21.9 MPa. According to the theoretical analysis of the folding tube, a type of interpolation of a double folded new microchannel plate finned tube was designed, and a simulation model was established to analyze its internal and external wall-thickness parameters such as the effect on the bearing-capacity limit. We conclude that at a wall thickness of 0.08 mm, an outside wall thickness of 0.2 mm, and in the 19th hole, optimal comprehensive performance was achieved. The new folding tube volume decreased by 35% and the ultimate bearing capacity value increased by 30% compared with those of an ordinary microchannel tube. The new folding tube not only can save material cost and make the flat tube structure more compact but also has an excellent ultimate bearing capacity. |
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| ISSN: | 0253-4339 |