Thermal conductivity measurement of a new energy saving wall assembly

传统的轻型钢框架具有实心钢腹板，这导致建筑物墙壁中的显著的热桥能量损失或增益。Structawire公司（SWC）设计了一种新的钢框架立柱，其中实心腹板被电阻焊接到两个凸缘上的双线桁架取代。通过这种创新的螺柱的热传递减少了80至85%。然而，在初步测试中，已经发现实际热流低于通过建模和计算预测的热流。这种差异的假设是，通过焊接点的热流阻力大于预期。UBC团队与SWC合作，成功建造了一个导热仪，而这个Engage plus granometer旨在进一步测试来自SWC的样品。通过了解焊接点的热性能，可以建立优化的钢框架立柱。

Conventional light gauge steel framing has solid steel webs, which result in significant thermal bridging energylosses, or gains, in building walls. Structawire Corp (SWC) has devised a new steel framing stud where thesolid web is replaced with a double wire truss that is resistance welded to two flanges. Heat transmissionthrough this innovative stud is reduced by 80 to 85%. However, in preliminary testing, it has been discoveredthat the actual heat flows are lower than predicted by modeling and calculations. The hypothesis for thisdifference is that resistance to heat flow through the weld points is greater than expected. The UBC teamworked with SWC and successfully constructed a thermal conductivity apparatus and this Engage plus grantwill aim to further test samples from SWC. Through understanding the thermal properties of the weld points,optimized steel framing stud can be built.