建筑室内边界对流换热量的反向计算模型

针对目前反向计算模型还无法实现对建筑室内边界对流换热量进行反向计算这一制约性差距，采用温度贡献率方法，将边界对流换热量与室内测点温度之间表示成因果关系的温度贡献因子矩阵，基于计算流体力学，将最小二乘与Tikhonov正则化方法相结合，建立依据室内数个测点的离散温度求解边界对流换热量的反问题数学模型。应用三维通风空腔和某建筑内一间办公室进行实验验证，模型求解值与实测值的均方根差均小于80%，结果表明反向计算模型可以准确对室内边界对流换热量进行求解。

Inverse method to determine wall boundary convective heat fluxes in indoor environments

Thus far, no research has inversely solved for boundary convective heat fluxes in indoor environments. This study proposed an inverse method based on Tikhonov regularization and least-squares optimisation using computational fluid dynamics(CFD) to determine the wall boundary convective heat fluxes in indoor environments. The inverse model applied the CRI to establish a matrix to describe the cause-effect relation between the cabin wall boundary heat flux and the exhibited discrete temperature at certain points. To test and evaluate the proposed inverse model, the surface heat fluxes on walls in a three dimensional ventilation cavity and an office in a building were inversely solved. The RMS errors of the model were less than 80%. This study finds that the developed inverse method can accurately and efficiently determine the wall convective heat fluxes in indoor environments.