OPEN ACCESS
Targeting three typical external thermal insulation systems, this paper puts forward a new principle (change of capacitive reactance of high-frequency electromagnetic wave sensors) for measuring the temperature and humidity in the interface between different layers of exterior walls. Following this method, several other ways such as thermal calculations, software simulations and model analyses are compared with each other to evaluate the actual thermal insulation and heat transfer effects of the walls, discuss the causes of thermal insulation defects and the solutions to remedy these defects. The research findings provide a valuable reference for the design, construction, application, evaluation and repair of energy-saving walls in hot summer and cold winter areas.
external thermal insulation (ETI), exterior wall, moisture content, coupled heat and moisture, thermal insulation effect.
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