1. School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, P.R. China;
2. Power Generation Branch, POWERCHINA Hubei Electric Engineering Corporation Limited, Wuhan, Hubei, P.R. China;
3. State Key Laboratory of Coal Combustion, School of Power and Energy Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, P.R. China