Advantages and Challenges in Usage of Inorganic, Salt Based PCMs in Buildings - Prof. Jan Kosny скачать в хорошем качестве

Advantages and Challenges in Usage of Inorganic, Salt Based PCMs in Buildings - Prof. Jan Kosny

Phase change material (PCM) is a high latent heat material that can be used to store thermal energy and regulate space temperature. In buildings, PCMs can be used to mitigate and timeshift thermal load peaks by absorbing (a part) of heat gain during warmer daytime via melting and releasing the stored thermal energy during cooler nighttime as it solidifies. Numerical simulation and field demonstration studies have shown that application of optimized PCM designs in well-insulated residential buildings can reduce space-conditioning requirements by 5%–35% (without accounting for benefits of load shifting and peak load reductions). Even though the first reported demonstration of the PCM in a North American building utilized inorganic PCMs (Maria Telkes PCM/solar house in 1940s, and Los Alamos National Laboratory experimental work on thermal storage containers and PCM concrete in 1980s), today, a great majority of PCM-enhanced building products commercialized in the U.S. market are organic based compounds such as paraffin and biobased fatty and ester compounds. Inorganic PCMs are still waiting for their time for wider scale applications. With this presentation prof. Kosny would like to improve the understanding of how inorganic PCMs as well as mechanical and building systems containing inorganic PCMs, can be effectively used. Dr. Jan Kosny is a research professor at University of Massachusetts, Lowell, and former Director of the Building Enclosures and Material Program at Fraunhofer Center for Sustainable Energy Systems, in Boston MA, and Executive Director of the North American PCM Manufacturers Association. Before moving to Boston in 2010, Dr. Kosny had worked as a senior scientist for almost 20 years at Oak Ridge National Laboratory, Oak Ridge, TN. He has forty years of experience in building physics, thermal storage, and advanced thermal insulations, through his work in academia, national lab, and research institutes. He has authored over 150 publications, 200 presentation and several patents in this area. He received the R&D 100 Award for the development of flame resistant PCM-enhanced thermal insulation.