Author(s)

K. Shimizu, O. Hanada, Y. Manaka, T. Ishikawa, M. Shimada, N. Kusakabe, M. Takezawa & H. Gotoh

Abstract

Global warming refers to the increase in the average temperature of the earth's near-surface atmosphere and oceans that has occurred since the mid-20th century and is projected to continue. Climate model projections summarized in the latest Intergovernmental Panel on Climate Change report indicate that the global surface temperature will probably rise a further 1.1~6.4�� during the 21st century. Mitigation of global warming can be accomplished through reductions in the rate of anthropogenic greenhouse gas release. The main influence on the surface temperature of the earth is solar radiation. Sustainability is realized by considering harmony between the environment and society. The consumption of energy will be reduced if the temperature of rooms can be controlled without any air conditioning, and heat island effects will be reduced. Assuming that electromagnetic waves with a certain range of frequencies are scattered to shield the radiated heat energy in the insulation, the intensity of scattered light for a set of packed spheres can be calculated using the Mie theory. As a result, the heat shield coating, AdgreencoatEX, and the energy saving glass coat, Glass Coat, were developed based on the reflection and permeability of scattered light in a set of packed spheres. AdgreencoatEx is a high-reflection coating that effectively reflects the near infrared range of solar radiation and suppresses the buildup of heat on roof surfaces. Glass Coat is effective for windows of commercial buildings and private houses. This protective coat is directly applied to a windowpane to shut out heat and ultraviolet rays. Infrared rays are reduced and ultraviolet rays are almost completely shut out to prevent deterioration of objects inside rooms.

Keywords

global warming, scattered light, heat shield coating, energy saving glass coat