| In recent years, the system of self-simulation has been used widely in hot summer and cold winter zone. But the thermal bridge will increase heat loss and reduce the inner surface temperature of the thermal bridge. So how to do some rational design to weaken or remove the effect of thermal bridge is very important.In this paper we build a two-story building and in the house we set five kinds of T-shaped thermal bridge:non-insulation column construction, entire-revealing column construction, half-wrapped column construction, entire-wrapped column construction and external insulation construction. And there are three kinds of self-insulation material walls:Sandwich insulation block, autoclaved aerated concrete block and sintered porous shale brick. Also there is a kind of external insulation wall. Through some experiments, we study the insulation capability of four different constructions of the T-type-floor thermal bridges in three different self-insulation systems. The insulation capability of different T-type-floor thermal bridges was analyzed from three aspects. They are how to reduce the risk of condensation and to improve thermal comfort, the insulation properties of thermal bridges and the adjacent walls.The results show that when using half-wrapped column construction, the heat transfer coefficient of thermal bridges is14.75%lower than using the entire-revealing column construction and19.38%lower than using the entire-wrapped column construction. So half-wrapped column construction will be a good choice.When using the autoclaved aerated concrete block and sandwich insulation block as the walls’materials, the heat transfer coefficient of thermal bridges is lower than the sintered porous shale brick wall. The Percentages are21.21%and17.42%. And compared with external insulation wall, the insulation performance of autoclaved aerated concrete block wall is close, and sandwich insulation block wall must be improved. |
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