Energy saving system of the curtain wall

In the whole curtain wall system, the largest proportion of heat transfer is usually the panel part. Non-transparent curtain wall can facilitate the selection of insulation wall materials, transparent curtain wall can be used through the use of LOW-E online coated laminated glass, insulating glass and even vacuum glass to meet the thermal requirements of the building, of course, at the same time it can reduce the shading coefficient to achieve better thermal performance. However, due to the limitation of mechanical structure, compared with the panel, the column and beam parts are relatively weak in heat insulation performance, thus, the thermal cutting profiles with “Tylenol wind” heat insulation strips as the core appeared.

Heat breaking profile, also known as heat breaking aluminum alloy profile: the aluminum alloy profile is divided into two parts, the inner part of the profile part plays a main supporting role and installation accessories; The outside profile part is mainly composed of outward closure, which takes the role of outer glass sealing, metal guard plate and installation accessories. Between the two parts of the profiles with very low thermal conductivity of the material fixed connection, it plays a role of heat flow blocking for types of curtain wall systems. That is, the use of broken heat aluminum alloy profile, so that in the case of indoor and outdoor temperature difference, the heat in the transfer of aluminum alloy profile does not form a path, prevent the conduction of heat. Considering the structural characteristics of the above thermal break curtain wall, it is a dangerous choice to adopt the above thermal break mode in the case of large external decorative belt. Therefore, it is necessary to ensure the mechanical stability of the system while solving the heat break problem. One of the key points is to solve the heat break connection between the outdoor curtain wall structure materials and the indoor building structure.

From the perspective of engineering reliability, the more links, the more opportunities to be affected by the outside world, and the reliability will gradually decrease. In actual engineering projects, there are many links, which also means the expansion of management scope and the increase of uncontrollable factors. Like ordinary aluminum profile and broken aluminum profile compared, if ignoring its special use, the broken heat profile of frameless curtain wall increases the broken heat strip, hot flux two materials, and its processing technology increases the rolling embedded, glue injection and other processes, at the same time the stress state of the profile is also limited. It can be inferred that the reliability of heat break profiles is lower than that of conventional profiles if the use of heat break profiles is ignored.