Abstract
In order to evaluate solar shading effects in the thermal environment of parking lots, the temperature of ground surface, and the inside and outside of car bodies were measured on sunny and shaded sides. In summer daytime, the maximum difference between the ground surface temperature of sunny and shaded sides was 22.2°C, while it remained 2°C-5°C on the lawn and shaded side. Car body temperatures showed 12°C-30°C difference between sunny and shaded sides. The car body temperatures were similar to the air temperatures on theshadedsideat the lowest temperatures. The drops of ground surface/car body temperatures were strongly affected by the cover ratio of the sun shade net, but it hit a ceiling at 80%. Drops of temperature were not affected by the temperature of the sun shelf material. In summer daytime, leaf surface temperature was maintained lower than air temperature due to transpiration. The material originates plant decrease radiation more than other solar shading materials.
