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.
TANG Jiedong,ZHAI Xiaoqiang
. Modelling and Simulation of Temperature and Humidity Distribution
in Curing Rooms of Concrete[J]. Journal of Shanghai Jiaotong University, 2018
, 52(12)
: 1543
-1551
.
DOI: 10.16183/j.cnki.jsjtu.2018.12.001
［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.
