STUDY ON EFFECT OF GRASS COVER ON GROUND TEMPERATURE OF GREEN ROOFS
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Киевский национальный университет строительства и архитектуры |
Publication date: 2018-02-05
BoZPE 2017;(1):67–72
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ABSTRACT
Active development of modern cities has led to the problem of shortage of land,
especially in the central urban areas. This has created serious environmental problems that can be solved with the help of roof greening. The work carried out to test
the hypothesis of “cooling effect” vegetable green roof layer. Our experimental
studies suggest that the “cooling effect grass” due to the evaporation of moisture
during temperature measurement. We have identified the main thermal processes
occurring in the top layer of the roof: the reflection and absorption of solar
radiation, the thermal resistance between the soil and the surrounding air by
conduction and convection, accumulation of heat in the soil, moisture exchange
between the soil, the grass and the environment. Reducing the temperature of
the grass compared to bituminous coating due to the decrease of the absorption
of solar energy. Low soil temperature as compared with ambient air connected with
the insulating properties of grass that saves “cold” accumulated during the night
by ground.