Solar Energy
Solar Energy

Solar Energy Claimed

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We are researching and developing a beam-down solar thermal collector that uses high temperatures to generate energy, and a solar thermal storage system for environmentally friendly vinyl greenhouses that aims to use temperatures as low as 80 degrees Celsius as an alternative energy source to heavy oil.


Beamdown Solarthermal System

Miyazaki Prefecture obtains the full sun.


The system consists of a 16m high tower with a 4.3m diameter ellipse mirror mounted on the top and 88 heliostats. Each heliostat consists of ten concave mirrors with a diameter of 50 cm, and the sun is precisely tracked by a sensor and focused at the first focal point of the ellipsoidal mirror on top of the tower, and the sunlight reflected by the ellipsoidal mirror is focused at the second focal point of the mirror.


The collected sunlight is converted into heat and is planned to be utilized for the production of new energy, such as hydrogen energy, etc., and it is expected that next-generation energy sources will be developed by taking advantage of the rich sunshine conditions of Miyazaki Prefecture.


The University of Miyazaki has concluded a joint research agreement with Niigata University, which is conducting research on hydrogen generation, and plans to obtain hydrogen generation equipment from Niigata University and start experiments with hydrogen generation from around the summer of 2013.


The University of Miyazaki’s Faculty of Engineering is also planning to research the production of silicon, the raw material for silica needed for solar cells, from the Shirasu plateau widely distributed in the prefecture.


1. Focusing sunlight on the first focal point of an elliptical mirror using a heliostat

2. The focused light is reflected on the surface of the ellipsoid mirror and focused again at the second focal point of the ellipsoid mirror.

3. Light passing through the second focal point is concentrated in the MSC and generates high temperature thermal energy at the exit of the MSC

4. Receiver with heat storage