Hydrological and thermal response of green roofs in different climatic conditions

SUSTAINABLE BUILT ENVIRONMENT D-A-CH CONFERENCE 2019

生态环境科学

Arkar, C.^1 ; Domjan, S.^1 ; Majkovi, D.^2 ; Šumi, J.^2 ; Medved, S.^1

Laboratory for Sustainable Technologies in Buildings, Faculty of Mechanical Engineering, University of Ljubljana, Akereva 6, Ljubljana

1000, Slovenia^1

Knauf Insulation, Trata 32, Škofja Loka

4220, Slovenia^2

关键词: Climate condition;    Climatic conditions;    Extensive green roofs;    Heat and mass transfer models;    Hydrological response;    Thermal response;    Vegetated roof;    Water retention;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/323/1/012063/pdf
DOI  :  10.1088/1755-1315/323/1/012063

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The paper presents a study on the thermal and hydrological response of lightweight extensive green roofs with lightweight mineral wool growing media in different European climate conditions. The green roof heat and mass transfer model was developed and experimentally validated. It was then integrated into a developed software tool for the whole year analysis of the green roof thermal and hydrological performance. The results of performed numerical analysis showed that heat losses in heating season and heat gains in summer months of the green roof is smaller compared to the reference non-vegetated roof in all considered climate conditions and depends on thickness of lightweight mineral wool growing media and especially on the green roof's irrigation scenario. The results of numerical analyses also demonstrated that the water retention of green roofs can be considerably improved if irrigation scenario considers the weather forecast. The weather forecast based green roofs irrigation also improves retention at stormwater events.