Abstract: [Objective] In this paper, a method of detecting heat storage performance on solid wood flooring,which used for ground with heating system,based on closed adiabatic cavity was proposed, and a detecting device of heat storage efficiency has been developed, which could provide reference for the standardization of wood flooring for ground with heating system in China.[Method] In the closed adiabatic cavity, L×M×N small spaces where temperature sensors can be installed are symmetrically divided. A wooden specimen which was heated to T_e is placed to the closed adiabatic cavity whose initial temperature is T₀(T_e > T₀), and the specimens can be considered as a heat source to release. Temperatures of each small space can be detected by sensors when the equilibrium state is reached in space. According to the temperature changes, volume of each small space and volume specific heat capacity of air, and heat release quantity from specimen could be calculated in each small space. By accumulating the heat absorbed in each small space, the total heat quantity released value can be obtained, and the heat storage efficiency of the wooden board can be calculated by the ratio of the total heat and the quantity under these conditions.[Result] Three kinds of wood flooring for ground with heating system,such as Fraxinus mandshurica, Pinus koraiensis and Quercus fabri are tested 10 times respectively under the condition that initial temperature is 20℃ in detecting cavity and sample temperature is 70℃. Then the heat storage efficiency are gotten by averaging detecting result, which are 105.70, 106.27 and 101.99 J·℃^-1,respectively.[Conclusion] In this study, a method for testing heat storage efficiency performance of wood flooring for ground with heating system is proposed.According to the heat storage efficiency test applied on three kinds of wood,the results showed that the all variance is less than 1.00. The detecting device is steady and could accurately evaluate heat storage efficiency to wood flooring. The methods and device proposed in this paper provided analytical method and instrument for the establishment of industry and national standards, which has great significance to standardization of wood flooring for ground with heating system in China.

Key words: wood flooring for ground with heating system, heat storage efficiency, detecting method, detecting device, closed adiabatic cavity