This paper presents a case study on how to improve the energy efficiency of an institutional building of significant heritage value through retrofitting the external wall system. This building is located in Upper Silesia, Poland. Due to the architectural value of the facade, thermal insulation had to be applied from the inside. As part of this publication, basing on the measurements and simulations, the authors present the results involving the improvement of energy efficiency of the insulated wall. On this basis, they also demonstrate the impact of insulation from the inside on the change of humidity inside the room. The tests were carried out both quantitatively by means of heat flux measurement and qualitatively by means of infrared temperature measurement. The research was supported by numerical modeling. The obtained results indicate that the thermal insulation used in the form of mineral insulation boards applied from the inside improves thermal insulation of the wall. Thus, heat losses through the examined envelope were limited. Computer simulations indicated that no condensation may occur under the condition considered.

中文翻译：

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内部绝热层对通过壁传热的影响：案例研究

本文提供了一个案例研究，说明如何通过改建外墙系统来提高具有重大遗产价值的机构建筑的能源效率。该建筑位于波兰上西里西亚。由于立面的建筑价值，必须从内部进行隔热。作为该出版物的一部分，作者基于测量和模拟，介绍了涉及改善隔热墙体能效的结果。在此基础上，他们还证明了内部隔热对室内湿度变化的影响。通过热通量测量定量地进行测试，并且通过红外温度测量定性地进行测试。该研究得到了数值建模的支持。所获得的结果表明，以从内部施加的矿物绝缘板的形式使用的热绝缘改善了墙壁的热绝缘。因此，通过检查的外壳的热损失受到限制。计算机模拟表明在所考虑的条件下不会发生凝结。