| 孔静娴， 姚青，付远华， 余科帆， 钱锦远.烤箱内胆流动特性与加热效率研究[J].轻工机械,2023,41(4):14-20 |
| 烤箱内胆流动特性与加热效率研究 |
| Research on Flow and Heating Efficiency Inside Steam Oven |
| |
| DOI：10.3969/j.issn.1005 2895.2023.04.002 |
| 中文关键词: 烤箱 过热蒸气 温度场分布 流场模拟 CFD数值计算 |
| 英文关键词:oven superheated steam temperature distribution flow simulation CFD（Computational Fluid Dynamics） numerical simulation |
| 基金项目:国家重点研发计划（2020YFC1910100）。 |
|
| 摘要点击次数: 50 |
| 全文下载次数: 46 |
| 中文摘要: |
| 为解决传统热风循环式烤箱受介质物性和烤箱结构限制而产生的温度不均匀问题，课题组提出了一种将过热蒸气（过热蒸气因焓值高而有助于蛋白质改性）作为传热介质的新型烤箱及3种优化方案。根据优化前新型烤箱的温度和速度分布，提出了在底部加设加热盘和在背部加设加热圈2种结构优化方案，以及增加蒸气进口速度的工艺优化方案；对优化前后的模型进行仿真，并实验验证其准确性。结果表明：底部增设加热盘后，样本点温度方差和平均温度分别改善了22.4%和2.9%；背部加设加热圈后，平均温度提升了3.5%，但温度均匀性下降；增加进口流速后，温度均匀性提升了46.4%，但平均温度降低。该新型烤箱为传统热风循环式烤箱的优化提供了一个新方向和思路。 |
| 英文摘要: |
| In order to solve the problem of the uneven temperature in forced convection oven caused by quantities of the medium and structures of oven, a novel oven using superheated steam (high enthalpy of superheated steam is helpful for protein modification) as heat transfer medium was proposed and three optimization schemes were put forward. Based on the distributions of temperature and velocity in traditional oven, two structural optimizations of adding a bottom heating plate and a back heating ring were proposed, as well as a process optimization of increasing the inlet velocity of superheated steam. The models before and after optimization were simulated and its accuracy was experimentally verified. The results show that with the addition of a bottom heating plate, the temperature variance and average of temperature at the sample points are improved by 22.4% and 2.9% respectively; after adding the back heating ring, the average of temperature increases by 3.5%, while the uniformity decreases; with the increase of inlet velocity of superheated steam, the uniformity of temperature increases by 46.4%, while the average decreases. The novel oven provides a new orientation for the optimization of traditional forced convection oven. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
