Development of molded bark particleboard as an inderlayment material used in heated flooring system

Ping Y., . and Kouhei Inoue, . and Hidefumi Yamauchi, . and Hikaru Sasaki, . (2006) Development of molded bark particleboard as an inderlayment material used in heated flooring system. [Proceedings Paper]

A molded sugi Cryptomeria japonica D. Don bark particleboard with grille U-shaped groves on one side has been developed as a floor underlayment material used in heated flooring system for both thermal insulation and accomodation of heating pipes. According to the results of density distribution in molded bark particleboard by means of a soft X-ray densitometry measurement a high density zone of 0.54 g/cm or above was founded at the bottom of the groove. This creates a negative impact on the performance of thermal insulation and accomodation when face-flooring panel od less than 0.54 g/cm is used. To improve the thermal insulation performance of bark particleboard when face-flooring panel with lower density is used the groove configuration is proposed to be altered from U-shape to V-shape so as to provide an air space between the heating pipe and high density zone at the bottom of the groove hence preventing the heat from leaking to the lower side of the floor. To evaluate the effectiveness of mold geometry modifications a two-dimensional finite element analysis was performed to clarify the density distribution in molded bark particleboard incorporated with a heat transfer analysis in the heated flooring systems. The adequacy of computer simulation was verified by the experimental results of density profile in molded bark particleboard and temperature distribution in heated flooring system.

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Abstract

A molded sugi Cryptomeria japonica D. Don bark particleboard with grille U-shaped groves on one side has been developed as a floor underlayment material used in heated flooring system for both thermal insulation and accomodation of heating pipes. According to the results of density distribution in molded bark particleboard by means of a soft X-ray densitometry measurement a high density zone of 0.54 g/cm or above was founded at the bottom of the groove. This creates a negative impact on the performance of thermal insulation and accomodation when face-flooring panel od less than 0.54 g/cm is used. To improve the thermal insulation performance of bark particleboard when face-flooring panel with lower density is used the groove configuration is proposed to be altered from U-shape to V-shape so as to provide an air space between the heating pipe and high density zone at the bottom of the groove hence preventing the heat from leaking to the lower side of the floor. To evaluate the effectiveness of mold geometry modifications a two-dimensional finite element analysis was performed to clarify the density distribution in molded bark particleboard incorporated with a heat transfer analysis in the heated flooring systems. The adequacy of computer simulation was verified by the experimental results of density profile in molded bark particleboard and temperature distribution in heated flooring system.

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Item Type:	Proceedings Paper
Additional Information:	9 ills. 4 refs.
AGROVOC Term:	MOULDS
AGROVOC Term:	BARK
AGROVOC Term:	PARTICLE BOARDS
AGROVOC Term:	FLOORS
AGROVOC Term:	PRESSING
AGROVOC Term:	JAPAN
Geographical Term:	MALAYSIA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:28
URI:	http://webagris.upm.edu.my/id/eprint/16922

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