Research Project

Wavelength Control of Radiation using Micro Structure with Metal Film


Tsuyoshi Totani
Tsuyoshi Totani


The objective of this study is to spectacularly improve the efficiency of a heat pump by means of not only the convection heat transfer but also drastically enhanced radiation in the heat transfer from the condenser of a heat pump to an ambient environment. The micro structures with a metal film is adopted as the heating surface of the condenser. The mechanism of the wavelength selection in the absorption and the emission of an electromagnetic wave on the micro structures is clarified. The radiation is controlled in the region of the wavelength that the atmosphere absorbs and emits a little radiation. This study develops the condenser with the wavelength selection which is easily produced at a low cost and in a large volume.