Shuai Lei, Zhang Jingshu, Song Jianxin, Chi Dong, Chen Zhuo
Key Laboratory of Mechanics on Disaster and Environment in Western China, Ministry of Education of China, Lanzhou 730000, China.
College of Civil Engineering and Mechanics, Lanzhou Univ., Lanzhou 730000, China.
Heliyon. 2024 Feb 15;10(4):e26490. doi: 10.1016/j.heliyon.2024.e26490. eCollection 2024 Feb 29.
In this paper, the thermal performance of 54 horizontal-hole interlocking composite insulation blocks was numerically analyzed based on the steady-state heat transfer model, the regulations were found, and prediction models for the thermal parameters of the blocks were established based on the parallel network thermal resistance model. The influence of block types and block materials on the thermal performance was studied, and it was found that the thermal performance of H-shaped interlocking insulation blocks was better than that of crossed-shaped ones, and the lower the thermal conductivity of block materials, the better the thermal performance of blocks, among which the reduction of thermal conductivity of concrete materials improved the thermal performance of blocks the most. The simulated values of thermal conductivity of H-shaped interlocking insulation blocks and thermal conductivity under the parallel network thermal resistance model were highly linearly correlated with correlation coefficients as high as 0.998 and 0.999. This finding enables the prediction models of thermal parameters of H-shaped interlocking insulation blocks to be established with high accuracy and provides an effective guide for the energy-saving design of interlocking insulation blocks wall.
本文基于稳态传热模型对54种水平孔联锁复合保温砌块的热性能进行了数值分析，找出了规律，并基于并联网络热阻模型建立了砌块热参数预测模型。研究了砌块类型和砌块材料对热性能的影响，发现H形联锁保温砌块的热性能优于十字形砌块，砌块材料的导热系数越低，砌块的热性能越好，其中混凝土材料导热系数的降低对砌块热性能的改善最为明显。H形联锁保温砌块的导热系数模拟值与并联网络热阻模型下的导热系数模拟值具有高度线性相关性，相关系数高达0.998和0.999。这一发现使得能够高精度地建立H形联锁保温砌块热参数预测模型，为联锁保温砌块墙体的节能设计提供了有效指导。
