Abstract
［［Objective ］］ To improve the automation level of 0the temperature control of grain cooling.［［Methods ］］ Using SST k-ω turbulence model and non -equilibrium thermal model to conduct theoretical analysis.Fluent was used for simulation and combined with process validation to explore the temperature distribution law during the process of grain spreading and cooling,and to optimize the spreading and cooling process via Univariate analysis and multivariate orthogonal analysis.Based on the degree how the discharge temperature meets the process requirements,and analyzed the impact of the thickness of the grain layer,the speed of the plate chain movement,and the impact of the exhaust air volume on the air flow distribution,temperature field distribution,and the temperature changes during the entire grain movement process.［［Results］］ After analysis,it was found that the thickness of the material layer has significant impact on the discharge temperature,the speed of the plate chain movement and the exhaust air volume have secondary impacts.The relationship equations between the discharge temperature and the grain residue processing capacity,and exhaust air volume were determined,which were convenient for predicting the discharge temperature in case of process changes.［［Conclusion ］］ Through process verification,the non -equilibrium thermal simulation method is accurate and effective in simulating the spreading and cooling process.The optimal process conditions for this spreading and cooling machine are about 20 cm in thickness of grain,0.15 m/s in plate chain movement and 5 000 m3/h exhaust air volume.
Publication Date
2-18-2025
First Page
101
Last Page
107
DOI
10.13652/j.spjx.1003.5788.2024.80332
Recommended Citation
Chao, ZHAO; Tao, CHEN; Zhonglin, ZHOU; and Jian, YANG
(2025)
"Study of grain spreading and cooling process based on non equilibrium thermal simulation,"
Food and Machinery: Vol. 40:
Iss.
10, Article 15.
DOI: 10.13652/j.spjx.1003.5788.2024.80332
Available at:
https://www.ifoodmm.cn/journal/vol40/iss10/15
References
[1] 潘大金,程伟,潘天全,等.白酒酿酒用带压蒸料及蒸汽回收循环利用设备系统的设计与应用研究 [J].酿酒科技,2020 (7):17-21.PAN D J,CHENG W,PAN T Q,et al.The design and application research of the equipment system for pressure distilling materials and steam recycling for Baijiu making [J].Liquor-Making Science & Technology,2020 (7):17-21.
[2] 郑昌宁,张宿义,黄治国,等.酿酒生产摊晾控温装备的研究[J].酿酒科技,2021 (6):84-88.ZHENG C N,ZHANG S Y,HUANG Z G,et al.Development |of automatic grain cooling equipment for Baijiu production [J].Liquor-Making Science & Technology,2021 (6):84-88.
[3] 梅潇,王伟,刘海洋,等.大倾角螺旋输送机中物料颗粒的运动特性研究 [J].机械设计与制造,2018 (S2):14-17,21.MEI X,WANG W,LIU H Y,et al.Research on the motion characteristics of material particles in high angle spiral conveyors [J].Machinery Design & Manufacture,2018 (S2):14-17,21.
[4] 周金虎.论传统白酒生产机械化智能化设备 [J].酿酒,2017,44(4):21-23.ZHOU J H.Discussion on mechanized and intelligent equipment for traditional Baijiu production [J].Liquor Making,2017,44(4):21-23.
[5] 邓皖玉,许永明,程伟,等.摊晾面积对酱香型白酒窖池产出差异性的影响 [J].酿酒科技,2019 (12):32-35.DENG W Y,XU Y M,CHENG W,et al.The influence of the spreading area on the production difference of maotai flavor Baijiu pits [J].Liquor-Making Science & Technology,2019 (12):32-35.
[6] 郑昌宁.螺旋输送式白酒糟醅摊晾机设计 [D].宜宾:四川轻化工大学,2021:41-53.ZHENG C N.Design of spiral conveyance type distiller's grains stall and cooling machine [D].Yibin:Sichuan University of Science and Engineering,2021:41-53.
[7] 黄汉清.基于 CFD仿真的酒醅自动摊凉机风室结构计算分析[J].科技新时代，2023 (5):45-51.HUANG H Q.Calculation and analysis of the wind chamber structure of the automatic fermented grain cooling machine based on CFD simulation [J].Popular Science,2023 (5):45-51.
[8] 陈钦明.粮糟自动摊晾设备的研发 [J].海峡科学,2021 (1):46-48.CHEN Q M.Research and development of automatic spreading and drying equipment for grain residue [J].Straits Science,2021(1):46-48.
[9] 吴生文,林培,肖美兰,等.机械化酿造车间摊晾过程标准化研究 [J].酿酒科技,2017 (10):92-95.WU S W,LIN P,XIAO M L,et al.Standardized cooling in mechanized manufacturing workshops of Baijiu [J].Liquor-Making Science & Technology,2017 (10):92-95.
[10] 于洋,蔚明强,王尔杰,等.枸杞烘干箱温度场优化及仿真[J].食品与机械,2024,40(1):101-114.YU Y,WEI M Q,WANG E J,et al.Optimization and simulation analysis of temperature field of wolfberry drying box[J].Food & Machinery,2024,40(1):101-114.
[11] 张良栋,孟思栋,田建平,等.浓香型固态发酵白酒自动上甄蒸馏装置研究 [J].酿酒科技,2015 (9):94-97,101.ZHANG L D,MENG S D,TIAN J P,et al.Automatic steamer distillation apparatus for Nongxiang Baijiu (liquor ) by solid-state fermentation [J].Liquor-Making Science & Technology,2015 (9):94-97,101.
[12] FRANÇOIS A,IBOS L,FEUILLET V,et al.In situ measurement method for the quantification of the thermal transmittance of a non-homogeneous wall or a thermal bridge using an inverse technique and active infrared thermography[J].Energy & Buildings,2021,233:233-242.
[13] 张勇.大比重气体在排风柜中的流动特性和受控效果研究[D].西安:西安建筑科技大学,2021:10-22.ZHANG Y.Study on the flow characteristics and controlled effect of large specific gravity gas in fume cabinet [D].Xi'an:Xi'an University of Architecture and Technology,2021:10-22.
[14] NICHOLSON G P,CLARK R P,CALCINA-GOFF M.Computational fluid dynamics as a method for assessing fume cupboard performance [J].Occupational Hygiene Society,2020,44(3):203-217.
[15] 田东,郭树国,王丽艳.基于 ANSYS/CFX 渐加速双螺杆设计及三维流场分析 [J].食品与机械,2023,39(6):99-104.TIAN D,GUO S G,WANG L Y.Design and 3D flow field analysis based on ANSYS/CFX stepwise acceleration twin screw [J].Food & Machinery,2023,39(6):99-104.
[16] 路朗,辛成运,刘忠鑫.多孔介质局部非热平衡模型研究综述[J].热能动力工程,2019,34(7):1-8.LU L,XIN C Y,LIU Z X.A review of local non equilibrium thermal models in porous media [J].Thermal Power Engineering,2019,34(7):1-8.
[17] 李鑫.局部非热平衡条件下填充多孔介质的平板换热器耦合换热特性研究 [D].武汉:华中科技大学,2021:36-52.LI X.Study on coupled heat transfer characteristics of a flat plate heat exchanger filled with porous media under local non thermal equilibrium conditions [D].Wuhan:Huazhong University of Science and Technology,2021:36-52.
