GONG Xiaolong 1，TANG Yongzhi 2, FENG Qing 1, LIU Zhongliang 2
(1. School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403, Jiangxi, China; 2. Key Laboratory
of Enhanced Heat Transfer and Energy Conversion, Ministry of Education, College of Environmental and Energy Engineering,
Beijing University of Technology, Beijing 100124, China)
Abstract：Fire reducing pit technology enters the historical record of dragon kiln, with the discovery of the Southern kiln historical remains in Leping District. In this paper, detailed analysis is focused on the sintering system of the unloaded kiln and the heat transfer coefficient of the fully-loaded kiln in the vicinity of the fire reducing pit to confirm the rationality and scientificity of the archaeological discovery of the fire-reducing pit and the ceramic products distributed nearby to demonstrate the wisdom of ancient working people. The results show that the fire-reducing pit technology helps reduce the flue gas velocity while maintaining the sintering system of the dragon kiln. Moreover, the distribution of the ceramic products in the vicinity of the fire-reducing pit meets the needs for the stability of heat transfer rate in the kiln.
Key words：fire-reducing pit technology; sintering system; heat transfer augmentation; distribution mode; theoretical research