Optimization Analysis of Thermal Performance of Composite Self-insulation Hollow Block

Wall insulation is a scientific and efficient thermal insulation technology, which is an important measure for building energy conservation. Because wall insulation performance is an important factor affecting building energy consumption and indoor comfort, therefore, it is extremely important to optimize wall insulation performance, reduce building energy consumption, and increase indoor thermal comfort. The self-insulating wall is widely used because it has the same life as the building, simple construction process, resource saving, and environmental pollution reduction. In this study, heat preservation material EPS was filled into the cavity of common hollow block to form composite self-insulation hollow block. Through the research and analysis of composite self-insulation hollow block, the thermal performance of composite self-insulation hollow block is optimized. In order to obtain the best filling effect of the thermal insulation material, six different filled positions of composite self-insulating hollow blocks and different filling rates were constructed and placed in the hot and cold test chamber. The internal surface temperature and heat flow of each block were measured by the field detector of heat transfer coefficient of building envelope with JTNT-A, and the thermal properties of six kinds of composite self-insulated blocks were compared and analyzed. The comparison results show that different filling positions and filling rates have great influence on the thermal performance of composite self-insulated block. In this study, by optimizing the thermal performance of composite self-insulation hollow block, a high-quality composite self-insulation hollow block model was obtained.