报告人：Prof. Gang Tan, 怀俄明大学
主持人：彭晋卿 教授
报告时间：2017年11月6日下午4:00~5:00
报告地点：土木工程学院院楼B210
Abstract:Innovative materials play critical roles in promoting energy efficiency and sustainability. Recently, a glass-and-polymer based metamaterial that is capable of cooling surface underneath (e.g., building roof) by as much as 10 to 16oC even under direct sunlight without using either energy or water has been developed. The metamaterial consists of a 50 m-thin polymeric film encapsulating SiO2 microspheres with a random dispersion. The material highly reflects incident solar radiation when backed with silver coating and allows the structure/object underneath to shed heat in the form of infrared thermal radiation. The tested film achieved 100W/m2 cooling power on daily average for both daytime and nighttime. Because of its large-scale manufacturing potential, there will be a wide application of this material to buildings, solar PV panels, transportation, and agriculture. Besides this metamaterial, few other materials with future applications to energy efficiency and sustainability will be introduced too, including silica aerogel fabricated from industrial wastes (e.g., fly ash) and abundant resource (e.g., trona ore), core-shell structured Na2SO4 phase change material (PCM) microencapsulated by SiO2 for high temperature thermal storage, and graphene aerogel integrated photocatalyst for enhancing CO2-fuel conversion rate.
Speaker:Dr. Tan is a tenured Associate Professor at University of Wyoming, USA. He received his B.S. and M.S. degrees from Tsinghua University and Ph.D. degree from M.I.T. Dr. Tan’s research interests focus on the areas of building energy efficiency technologies, innovative materials for building applications, and indoor air quality and thermal environment control. His research work has been supported by federal and local government grants including a $3M project from Advanced Research Program Agency – Energy (ARPA-E) of the U.S. Department of Energy (DOE) and a $5M project from the U.S. National Science Foundation (NSF). Dr. Tan has authored or co-authored 50 publications. Especially, he co-authored a paper recently issued in the journal Science. Prior to joining the University of Wyoming, Dr. Tan worked for multiple state-wide building energy efficiency programs aiming to demand side management (DSM) in the U.S.