Numerical analysis study on the thermal performance of buildings with bamboo-steel composite envelope.

This article focuses on analyzing the indoor thermal performance of bamboo-steel buildings compared to conventional building materials using Ecotect simulation software. The study finds that bamboo-steel walls exhibit thermal insulation performance intermediate between concrete block and double brick veneer walls, with indoor temperatures more influenced by outdoor conditions, leading to greater fluctuations and the need for additional insulation measures. Key design parameters affecting thermal comfort in bamboo-steel buildings include window-to-wall ratio, wall thickness, and the presence of a hollow interlayer; specifically, a window-to-wall ratio of 0.4, wall thickness of 240 mm, and a 40 mm hollow interlayer improve insulation and comfort. The research also highlights that occupant factors such as clothing and per capita area impact indoor thermal conditions, with larger per capita areas and warmer clothing enhancing comfort. These findings provide scientific guidance for optimizing bamboo-steel building designs to improve energy efficiency and occupant comfort.