Green Roof Actual Evapotranspiration

Anna zakrisson on sunday may 26 2019.

Green roof actual evapotranspiration.

Little research has been completed on evapotranspiration et in green roofs. In the literature available however it is still not clear how and how much the evapotranspiration affects the performance of a green roof. Retention is water captured by the green roof that only leaves as vapor through the process of evapotranspiration. Most of the analysed studies performed a comparison between green roof evapotranspiration plants substrate and bare soil evaporation only substrate.

Retention and evapotranspiration are always the same volumes. Evapotranspiration why even when discussing it with professional engineers doing building energy modeling they assume that most of the cooling ability of a green roof is through. The plants in a green roof absorb water through their roots and then use surrounding heat from the air to evaporate the water while some roofs can reach temperatures of up to 90 f in the summertime these two features can allow. They provide shade to the top of a building evapotranspiration.

When the subject of energy and green roofs comes up nearly everyone familiar with the topic will tell me that green roofs stay cool because of evapotranspiration. Evapotranspiration is the process of water escaping as vapor. In order to fill the gap in this research topic this study carries out a review on the cooling effect due to the evapotranspiration process of green roofs. Sedum mexicanum mexican stonecrop and disphyma australe new zealand iceplant in a new zealand designed pumice and zeolite based substrate were analyzed to determine daily and hourly et rates under both water abundant and drought stressed conditions.