1. School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China
2. Key Lab of Complementary Energy System of Biomass and Solar Energy Gansu Province, Lanzhou 730050, China
3. Collaborative Innovation Center of Key Technology for Northwest Low Carbon Urbanization, Lanzhou 730050, China
4. State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, CAS, Lanzhou 730000, China