Influence of insulation defects on the thermal performance of walls. An experimental and numerical investigation

The addition of insulating layers on vertical walls of buildings is a common practice for providing a higher thermal insulation of the envelope. Workmanship defects, however, might influence the effectiveness of such insulation strategy. Damaged materials, incorrect installation, use of aged or weathered materials might alter the capability of reducing heat transfer through the envelope, whether vertical or sloped. In this work, drawbacks caused by the wrong installation of insulating material and by damaged material are assessed. A specimen wall was investigated by experimental and numerical approaches, the latter carried out by using COMSOL Multiphysics®. Results are compared and discussed.

在建筑物的垂直墙体添加绝缘层是一种常见的做法，旨在提升建筑外层的隔热性能。然而，施工缺陷可能会影响这种隔热策略的有效性。损坏的材料、安装不当、使用陈旧或风化的材料可能会改变通过建筑外层，无论是垂直还是倾斜部分，减少热传递的能力。在本研究中，由绝缘材料安装不当和材料损坏引起的缺陷被进行了评估。通过实验和数值方法对一块样品墙体进行了研究，其中数值方法采用了 COMSOL Multiphysics® 软件进行。结果被比较并进行了讨论。