Sensitivity analysis of design parameters of envelope enclosure performance in the dry-hot and dry-cold areas

Abstract

In a bid to quantify the sensitivity of envelope enclosure’s design parameters in the dry-hot and dry-cold areas and to provide a reference for the local building performance design, this paper uses ANN modelling which combined with the improved Garson algorithm to calculate the connection weight sensitivity (CWS), the first-order sensitivity (RBD-S1 and DMIM-S1) and the global sensitivity (DMIM-delta) of the design parameters. These parameters were calculated by using different methods in SALib. Through the verification and analysis of the sensitive result, the applicability of the CWS and DMIM-delta was confirmed. Among the design parameters involved in this study, the sum of the sensitive values of S-D, S-N and S-A exceeds 60% in each performance label, and the sum of the sensitive values of WWR_S and WWR_N exceeds 20%. The performance design of envelope enclosure in this area requires applying reasonable shading components and appropriate optimisation of the North and South of WWR. After the sensitivity analysis process, the calculation efficiency of the model can be improved as far as possible without reducing the accuracy of the model in the later simplified calculation and multi-objective optimisation. The building performance simulation model has a high degree of non-linearity, and the interpretability of the model can be enhanced through the sensitivity analysis process. Although the internal calculation process is unknowable, the perception of the results caused by the input parameters is significantly enhanced.

Structural Safety Analysis of Cantilever External Shading Components of Buildings under Extreme Wind Environment

“…Turpan has five major characteristics: long sunshine hours, a large temperature difference between day and night, low precipitation, high temperature, and strong wind. It belongs to the temperate According to the analysis of the importance of the shading components, the importance of the parameters of the shading components is much higher than that of the building window-to-wall ratio, the thickness of the roof insulation layer, the comprehensive heat transfer coefficient of the external windows, and the parameters of the envelope structure [4]. The order of importance from high to low is window-to-wall ratio in the south (WWR_S), window-to-wall ratio in the north (WWR_N), and window heat transfer coefficient (WHTC); according to the sensitivity analysis of the sunshade components, the Processes 2022, 10, x FOR PEER REVIEW and night, low precipitation, high temperature, and strong wind.…”

“…According to th analysis obtained by the research group, the importance analysis and sensitivity an of the sunshade components are shown in Figures 1 and 2. According to the analysis of the importance of the shading components, th portance of the parameters of the shading components is much higher than that building window-to-wall ratio, the thickness of the roof insulation layer, the comp sive heat transfer coefficient of the external windows, and the parameters of the env structure [4]. The order of importance from high to low is window-to-wall ratio south (WWR_S), window-to-wall ratio in the north (WWR_N), and window heat tr coefficient (WHTC); according to the sensitivity analysis of the sunshade componen According to the analysis of the importance of the shading components, the importance of the parameters of the shading components is much higher than that of the building window-to-wall ratio, the thickness of the roof insulation layer, the comprehensive heat transfer coefficient of the external windows, and the parameters of the envelope structure [4].…”

“…According to the analysis of the importance of the shading components, th portance of the parameters of the shading components is much higher than that building window-to-wall ratio, the thickness of the roof insulation layer, the comp sive heat transfer coefficient of the external windows, and the parameters of the env structure [4]. The order of importance from high to low is window-to-wall ratio south (WWR_S), window-to-wall ratio in the north (WWR_N), and window heat tr coefficient (WHTC); according to the sensitivity analysis of the sunshade componen According to the analysis of the importance of the shading components, the importance of the parameters of the shading components is much higher than that of the building window-to-wall ratio, the thickness of the roof insulation layer, the comprehensive heat transfer coefficient of the external windows, and the parameters of the envelope structure [4]. The order of importance from high to low is window-to-wall ratio in the south (WWR_S), window-to-wall ratio in the north (WWR_N), and window heat transfer coefficient (WHTC); according to the sensitivity analysis of the sunshade components, the sensitivity of the sunshade components in the multi-parameter analysis accounts for about 60% of the total.…”