1. Associate Professor, Dept. of Thermal Engineering, Shandong Jianzhu Univ., Jinan 250101, China.
2. Lecturer, Dept. of Thermal Engineering, Shandong Jianzhu Univ., Jinan 250101, China.
3. Chairman of the Board, Weifang Beihai Heating Co., Ltd., No. 04888, Xiangjiang East St., Weifang 261108, China.
4. Senior Engineer, Weifang Beihai Heating Co., Ltd., No. 04888, Xiangjiang East St., Weifang 261108, China.
5. Professor, National Engineering Laboratory of Coal-Fired Pollutants Emission Reduction, Shandong Univ., Jinan 250061, China (corresponding author).