TY  - JOUR
A1  - Alsaad, Hayder
A1  - Hartmann, Maria
A1  - Voelker, Conrad
T1  - The effect of a living wall system designated for greywater treatment on the hygrothermal performance of the facade
JF  - Energy and Buildings
N2  - Besides their multiple known benefits regarding urban microclimate, living walls can be used as decentralized stand-alone systems to treat greywater locally at the buildings. While this offers numerous environmental advantages, it can have a considerable impact on the hygrothermal performance of the facade as such systems involve bringing large quantities of water onto the facade. As it is difficult to represent complex entities such as plants in the typical simulation tools used for heat and moisture transport, this study suggests a new approach to tackle this challenge by coupling two tools: ENVI-Met and Delphin. ENVI-Met was used to simulate the impact of the plants to determine the local environmental parameters at the living wall. Delphin, on the other hand, was used to conduct the hygrothermal simulations using the local parameters calculated by ENVI-Met. Four wall constructions were investigated in this study: an uninsulated brick wall, a precast concrete plate, a sandy limestone wall, and a double-shell wall. The results showed that the living wall improved the U-value, the exterior surface temperature, and the heat flux through the wall. Moreover, the living wall did not increase the risk of moisture in the wall during winter and eliminated the risk of condensation.
KW  - Feuchteleitung
KW  - Diffusionswärme
KW  - Heat transport
KW  - Moisture transport
KW  - Living wall
KW  - Delphin
KW  - ENVI-Met
Y1  - 2021
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20240116-65299
UR  - https://www.sciencedirect.com/science/article/pii/S0378778821009956
VL  - 2022
IS  - volume 255, article 111711
ER  -