Experimental Investigation on Thermal Conductivity of Straw Boards Based on the Temperature Control Box-Heat Flux Meter Method

被引：2

作者：

Sun, Kuo ^{[1
]}

Zheng, Chaorong ^{[1
,2
]}

Wu, Yue ^{[1
,2
]}

Zhang, Wenyuan ^{[1
,2
]}

机构：

[1] Harbin Inst Technol, Sch Civil Engn, Harbin 150090, Peoples R China

[2] Harbin Inst Technol, Minist Educ, Key Lab Struct Dynam Behav & Control, Harbin 150090, Peoples R China

来源：

SUSTAINABILITY | 2023年 / 15卷 / 14期

基金：

国家重点研发计划;

关键词：

straw bio-based material; wheat straw strand board; paper straw board; temperature control box-heat flux meter method; thermal conductivity; PERFORMANCE; FIELD;

D O I：

10.3390/su151410960

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Straw boards are the environmentally-friendly and sustainable materials used for building envelopes. To validate a novel alternative test method of thermal conductivity (& lambda;), temperature control box-heat flux meter method (TCB-HFM), and better understand the thermal properties of straw boards, experimental investigation on two types of straw boards using such a method was carried out. Moreover, the control test via the conventional guarded hot plate method (GHP) was conducted to provide a benchmark. Results show that the fluctuation amplitudes of the temperature difference and heat flux density for the TCB-HFM during the steady state are much smaller than a generally acceptable limitation of 5%, and a 5.9% deviation of & lambda; between the two test methods is in a reasonable range. It is indicated that the TCB-HFM can be regarded as an alternative test method to conduct investigations on the thermal properties of materials. Furthermore, the correlation between density and & lambda; is explored and expressed by a linear fitting formula with the determination coefficient (R2) of 0.9193, and the formula is verified to have the feasibility to predict the & lambda; of different types of straw bio-based materials.

引用

页数：15