Flow field optimizing study of low temperature economizer in a coal-fired boiler Xiaochuan Deng, Fengchang Sun, Zhonghua Bai, Zongze Yu, Jiahua Wu, Dongyang Yu and zheng Wang E3S Web Conf., 261 (2021) 01040 Published online: 21 May 2021 DOI: 10.1051/e3sconf/202126101040