学报(中文)

立体式预制构件养护仓温湿度分布建模及数值模拟

展开
  • 上海交通大学 制冷与低温研究所, 上海 200240
上海交通大学 制冷与低温研究所, 上海 200240

网络出版日期: 2018-12-28

Modelling and Simulation of Temperature and Humidity Distribution in Curing Rooms of Concrete

Expand
  • Institute of Refrigeration and Cryogenics Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Online published: 2018-12-28

摘要

针对目前混凝土构件厂生产线主要使用的立体养护仓温湿度分布进行模拟研究.考虑立体养护仓的高温高湿特点,采用壁面冷凝和雾状冷凝模拟养护仓内的凝结放热现象.模拟结果表明:仓室内大部分区域相对湿度都能较快地达到100%,但温度分布极不均匀,上下温差达到26℃.通过改变喷口朝向、位置和数量发现:喷口向下喷时仓室内温度更均匀;喷口高度在仓室总高度的46%~65%区间时,仓室内温度分布的均匀性最好;喷口数量的增加能够改善喷口之间温度的不均匀性.

本文引用格式

汤洁冬,翟晓强 . 立体式预制构件养护仓温湿度分布建模及数值模拟[J]. 上海交通大学学报, 2018 , 52(12) : 1543 -1551 . DOI: 10.16183/j.cnki.jsjtu.2018.12.001

Abstract

Temperature and humidity distribution of curing rooms which are mainly used in the production line of concrete component factory are studied by simulation. Considering high temperature and high humidity in the curing room, wall condensation and mist condensation are used to simulate the condensation in the room. The simulation results show that the relative humidity of most areas reaches 100% very fast, but the temperature distribution is extremely uneven and temperature difference is up to 26℃. In addition, by changing the nozzle orientation, position and quantity, it is found that the temperature is more uniform when the nozzle is downward; when the nozzle is located in 46% to 65% of the total height of the room, the temperature distribution achieves the best uniformity; the increase in the number of nozzles can improve the temperature distribution between the nozzles.

参考文献

[1]祁建, 霍光, 李宣, 等. PC自动化生产线养护工艺及养护系统研究[J]. 建筑机械化, 2016(4): 21-24. QI Jian, HUO Guang, LI Xuan, et al. Research on technology and system of PC automatic production line[J]. Construction Mechanization, 2016(4): 21-24. [2]田耀刚, 彭波, 丁庆军, 等. 蒸养参数对高强混凝土抗硫酸盐侵蚀性能的影响[J]. 混凝土与水泥制品, 2010(3): 1-4. TIAN Yaogang, PENG Bo, DING Qingjun, et al. Effects of steam-cured parameters on sulfate resistance performance of high strength concrete[J]. China Concrete and Cement Products, 2010(3): 1-4. [3]LI M Y, WANG Q, YANG J. Influence of steam curing method on the performance of concrete containing a large portion of mineral admixtures[J]. Advances in Materials Science and Engineering, 2017, 2017: 1-11. [4]LONG G C, HE Z M, OMRAN A. Heat damage of steam curing on the surface layer of concrete[J]. Magazine of Concrete Research, 2012, 64(11): 995-1004. [5]WANG Q, LI M Y, ZHANG B. Influence of pre-curing time on the hydration of binder and the properties of concrete under steam curing condition[J]. Journal of Thermal Analysis and Calorimetry, 2014, 118(3): 1505-1512. [6]HWANG S D, KHATIB R, LEE H K, et al. Optimization of steam-curing regime for high-strength, self-consolidating concrete for precast, prestressed concrete applications[J]. Pci Journal, 2012, 57(3): 48-62. [7]杨江朋. 晋陕黄河特大桥节段箱梁冬季蒸养方案设计[J]. 高速铁路技术, 2015, 6(3): 94-96. YANG Jiangpeng. Design of steam curing scheme in winter for segmental box girder of high-speed railway passenger dedicated line[J]. High Speed Railway Technology, 2015, 6(3): 94-96. [8]ZHANG Y H, SUN H, LI X, et al. Study of steam-cured system impact on concrete compressive strength and prediction of strength model[J]. Materials Review, 2015, 29: 554-564 [9]LI X, NIU W Y. Effect of supplementary curing after steam-curing on performance of concrete[J]. Materials Science Forum, 2015, 852: 1376-1382. [10]中国建筑科学研究院.混凝土质量控制标准: GB50164-2011[S].北京: 中国建筑工业出版 社, 2004. China Academy of Building Research. Standard for quality control of concrete: GB50164-2011 [S].Bejing: China Architecture& Building Press, 2004. [11]朱红钧. FLUENT 15.0流场分析实战指南[M]. 北京: 人民邮电出版社, 2015. ZHU Hongjun. FLUENT 15.0 flow field analysis practical guide[M].Beijing: People’s Posts and Telecommunications Press, 2015. [12]FU W, LI X W, WU X X, et al. Numerical investigation of convective condensation with the presence of non-condensable gases in a vertical tube[J]. Nuclear Engineering & Design, 2016, 297: 197-207. [13]刘晖, 康勇. 新的水饱和压力与饱和温度计算方法[J]. 压缩机技术, 2005(6): 26-27. LIU Hui, KANG Yong. New method for calculating saturated pressure and saturation temperature[J]. Compressor Technology, 2005(6): 26-27. [14]余徽, 朱家骅, 杜怀明, 等. 高湿度工业废气冷凝脱湿模型研究与数值模拟[J]. 化工学报, 2005, 56(8): 1389-1396. YU Hui, ZHU Jiahua, DU Huaiming, et al. Modeling and simulation of condensation and dehumidifying of high humidity industrial exhaust gases[J]. Journal of Chemical Industry & Engineering (China), 2005, 56(8): 1389-1396.
Options
文章导航

/