Field Studies оf the "Cooling Effect" оf Vertical Greening оf Buildings
Journal Title: Вентиляція, освітлення та теплогазопостачання - Year 2018, Vol 25, Issue
Abstract
The aim of the work was to carry out field studies of the "cooling effect" of vertical greening of buildings and to compare the results with the "cooling effect" of the vegetation layer of "green roofs". The field studies of the "cooling effect" of vertical greening are carried out on a fence by wild grapes (Parthenocissus) at the territory of Kiev National University of Construction and Architecture in warm period of year on June 8, 2018 at 14:30 with the periodic appearance of wind and its insignificant speed were carried out. The use of the fence with practically the same air temperature on both sides avoids the effect of the heat fluxes of the premises. The thermometer is a liquid glass thermometer with a 0.1 °C scale value. To minimize the effect of radiation heat, the bulb of the thermometer was protected by a heat-reflecting screen made of aluminum foil. The screen had enough depth to reflect radiation heat fluxes from solar radiation, surrounding objects and the fence. To measure the temperature under the plant layer, the thermometer was attached to the plant stem in the place of its natural attachment to the fence. To measure air temperature, the thermometer was held outside the fence at arm's length from the researcher. The average value of the "cooling effect" is 1.23 K. The resulting "cooling effect" exceeds its value for the grass layer of the green roof (0.6 ... 0.9 K) by 0.5 ... 0.6 K. This excess can be due to the peculiarities of transpiration of the wild grapes (Parthenocissus) and the larger area of the leaf blade. In the future it is planned to conduct research on a day with calm and ensure constant mechanical blowing of a sufficient surface area of the fence for several hours in order to avoid the influence of thermal inertia and heat flows along the fence plane
Authors and Affiliations
T. Tkachenko
Keywords
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