Dr. Xiaobing Liu is a staff scientist at Oak Ridge National Laboratory (ORNL). He has been the Principal Investigator of many building thermal energy systems related R&D projects since 2009, with a recent focus on utilization of low-temperature geothermal energy and thermal energy storage. Dr. Liu graduated from Oklahoma State University (OSU) with a Ph.D. degree in 2005. Dr. Liu joined ClimateMaster as the Systems Engineering Manager after graduating from OSU. Dr. Liu served as the research chair at ASHRAE TC 6.8 (Geothermal Energy Utilization and Energy Recovery) and he is currently serving as the research sub-committee chair at the International Ground Source Heat Pump Association.