On the role of external walls in the reduction of energy demand and the mitigation of human thermal discomfort / Tomasz Kisilewicz // Sustainability [Dokument elektroniczny]. – 2019, Vol. 11, Iss. 4, ... więcej

On the role of external walls in the reduction of energy demand and the mitigation of human thermal discomfort / Tomasz Kisilewicz // Sustainability [Dokument elektroniczny]. – 2019, Vol. 11, Iss. 4, 20 s. : fot., rys., tab., wykr. – Tryb dostępu: https://www.mdpi.com/2071-1050/11/4/1061. – Oznaczenie ref./art.: 1061. – Bibliogr. 33 poz., Abstr. – doi: 10.3390/su11041061. – ISSN 2071-1050

The structure and thermal properties of external walls affect both the thermal conditionsinside the building and the energy demand. This applies to the energy requirement for heatingas well as cooling. ... więcej

The structure and thermal properties of external walls affect both the thermal conditionsinside the building and the energy demand. This applies to the energy requirement for heatingas well as cooling. While the relationship between thermal insulation and heating is well-known, the effect of thermal insulation on overheating is not evident. One can find opinions that thick thermal insulation creates a “thermos effect” and significantly deteriorates the comfort conditions during the summer. In order to prove these statements, an office room with south-oriented glazing and a high thermal load from equipment was simulated by means of the Energy Plus program.The reference variant was a two-layer wall made from ceramic blocks and a 10 cm layer of thermal insulation. The duration of overheating in the investigated intensively used office space without window shading was approximately 26 to 29 days per year, depending on the expected comfort acceptance range, while in the case of the not insulated wall, it would be shorter by over 3 days.