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An assessment of the thermal storage capacity of hemp-lime using the Transient Performance Ratio method
2017-06-21, Kinnane, Oliver, Reilly, Aidan
Many claims are made regarding the superior thermal performance of high heat capacity materials under the general heading of thermal mass. However, the benefits of thermal mass are poorly quantified in existing literature. These issues often become more important in the case of biobased materials, where thick, monolithic wall construction leads to a stronger connection between a building's structure and the indoor environment. New materials include hemp-lime concrete, which offers a combination of structural, thermal and hygroscopic properties that make it suitable for incorporation into the building envelope. Hemp-lime has long been proposed to offer excellent thermal mass performance, yet this impact is poorly quantified in existing literature. This paper uses the Transient Energy Ratio (TER) method, developed by these authors, to compare the performance of hemp-lime concrete walls with traditional solid wall and cavity wall constructions.