1. School of Energy and Power Engineering, Lanzhou University of Technology, Gansu, China.
2. Jiuquan Vocational Technical College, Gansu, China.
3. Collaborative Innovation Center for Supporting Technology of Northwest Low-Carbon Towns, Gansu, China.
4. Gansu Key Laboratory of Complementary Energy System of Biomass and Solar Energy, Gansu, China.
5. College of Earth and Environmental Sciences, Lanzhou University, Gansu, China.