Thermal Curtain Wall|Thermal insulation performance and energy-saving design principles of glass curtain wall
The glass curtain wall has poor thermal insulation performance and poor ventilation effect, which directly affects the equipment configuration and energy consumption of the building.
Thermal insulation performance refers to the ability of the curtain wall to transfer heat from the high temperature side to the low temperature side under the condition of the air temperature difference between the two sides of the curtain wall. It does not include the heat transfer of the air penetrating through the gap. The insulation performance of the curtain wall is expressed by the heat transfer coefficient k.
The insulation performance of the curtain wall should be solved by controlling the total thermal resistance and selecting the corresponding materials. In order to reduce heat loss, improvements can be made from the following three aspects: The first is to improve the thermal insulation performance of daylighting window glass, try to use insulating glass, and reduce opening fans; the second is to use good heat insulation for non-lighting parts The material is used as a back lining wall (such as pumice, light concrete) or an insulation core material; the third is to do airtight treatment and reduce ventilation.
However, in actual use, such as curtain wall under long-term exposure, the reflective glass is slower than other glasses because of its slower heat dissipation. Although its reflective ability is large, the accumulation of heat makes it inevitably a new heat source. The transmission ability is a problem worthy of attention.
Temperature difference heat transfer and air flow heat exchange are also issues that should be considered for energy conservation in summer envelopes. The heat transfer in these two aspects is caused by the difference between indoor and outdoor temperature. The difference is that the former is through heat transfer, and the latter is through indoor and outdoor heat transfer. Air penetration.
In the thermal design of the curtain wall, specific analysis and research must be carried out, such as the convection heat transfer between the outer surface of the curtain wall and the surrounding air and the external environment, the heat transfer between the inner surface of the curtain wall and the indoor air and the indoor environment, the curtain wall and the metal The heat transfer of the sash, the radiation heat transfer reduced by the coating layer of the glass, etc.
The climatic conditions are different everywhere, and there should be different requirements for the performance of the curtain wall. Each building climate zone has or will soon have corresponding energy-saving design regulations and standards. For example, curtain walls in severely cold areas, cold areas, and mild areas should be designed for insulation in winter.
XiangYi Aluminium Provide thermal curtain wall,If you are interested in thermal curtain wall,You can browse related products and initiate consultations on our website.
Thermal insulation performance refers to the ability of the curtain wall to transfer heat from the high temperature side to the low temperature side under the condition of the air temperature difference between the two sides of the curtain wall. It does not include the heat transfer of the air penetrating through the gap. The insulation performance of the curtain wall is expressed by the heat transfer coefficient k.
The insulation performance of the curtain wall should be solved by controlling the total thermal resistance and selecting the corresponding materials. In order to reduce heat loss, improvements can be made from the following three aspects: The first is to improve the thermal insulation performance of daylighting window glass, try to use insulating glass, and reduce opening fans; the second is to use good heat insulation for non-lighting parts The material is used as a back lining wall (such as pumice, light concrete) or an insulation core material; the third is to do airtight treatment and reduce ventilation.
However, in actual use, such as curtain wall under long-term exposure, the reflective glass is slower than other glasses because of its slower heat dissipation. Although its reflective ability is large, the accumulation of heat makes it inevitably a new heat source. The transmission ability is a problem worthy of attention.
Temperature difference heat transfer and air flow heat exchange are also issues that should be considered for energy conservation in summer envelopes. The heat transfer in these two aspects is caused by the difference between indoor and outdoor temperature. The difference is that the former is through heat transfer, and the latter is through indoor and outdoor heat transfer. Air penetration.
In the thermal design of the curtain wall, specific analysis and research must be carried out, such as the convection heat transfer between the outer surface of the curtain wall and the surrounding air and the external environment, the heat transfer between the inner surface of the curtain wall and the indoor air and the indoor environment, the curtain wall and the metal The heat transfer of the sash, the radiation heat transfer reduced by the coating layer of the glass, etc.
The climatic conditions are different everywhere, and there should be different requirements for the performance of the curtain wall. Each building climate zone has or will soon have corresponding energy-saving design regulations and standards. For example, curtain walls in severely cold areas, cold areas, and mild areas should be designed for insulation in winter.
XiangYi Aluminium Provide thermal curtain wall,If you are interested in thermal curtain wall,You can browse related products and initiate consultations on our website.
