The insulation effect of hollow wall is better than that of traditional solid wall.

At present, many areas are still dominated by traditional solid walls because the old city has not been rebuilt and most of them are buildings of the 20th century. However, because the new hollow wall has many advantages such as good thermal insulation effect, most new building walls adopt hollow wall thermal insulation technology.

The new hollow wall has excellent thermal insulation effect, and the wall design adopts carbon fiber components, including carbon fiber and activated carbon. An insulation board is used between two adjacent columns to divide the insulation board into two spaces. There is an external wall board outside the insulation board corresponding to the wall, and there is an aluminum plate or aluminum foil at the corresponding position outside the external wall board. Through double-layer interception, the heat loss is greatly reduced, so the thermal insulation effect of hollow wall is greatly improved compared with that of traditional wall.

In the process of studying the thermal insulation principle of new hollow wall, the heat loss during heat transfer and heat dissipation of hollow wall and traditional solid wall was tested. The results show that the thermal insulation effect of the hollow wall is good, the temperature distribution in the heat transfer process of the wall is different from that of the traditional solid wall structure, and the temperature of the hollow wall from the inner surface to the outer surface will not decrease obviously. Surprisingly, in sunny weather, the temperature inside and outside the hollow wall is much higher than that of the traditional solid wall.

Thermal insulation experiments were carried out on the outer sides of two kinds of walls with 30 mm thick insulation boards of the same specifications. The heat transfer coefficient of traditional solid wall insulation technology was 1.02, and that of hollow wall was 1.25. At this time, we can see that the heat transfer coefficient of hollow wall is higher than that of traditional wall. However, when the thickness of insulation board reaches 80 mm, the heat transfer coefficient of traditional solid wall is 0.54, while that of hollow wall is 0.48. It can be concluded that the thermal insulation performance of the wall can be improved by properly adding air layer to the material, but it should be noted that when the thickness of the air layer is above 80 mm, the thermal insulation performance of the wall will not be improved, but will be reduced.

In a word, most new buildings adopt hollow walls made of new hollow wall insulation technology. Compared with the traditional solid wall, the hollow wall has better thermal insulation effect, which can better coordinate the process of heat storage and heat release in all parts of the wall, greatly enhance the overall area of the wall participating in heat storage and heat release, and intercept more heat. Therefore, the use of hollow wall insulation in decoration will greatly improve the degree of indoor insulation, which is the first choice for new buildings.

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