Product Description

The history of utilization of solar energy in recent times can be calculated from the year of ***5 when French engineer invented the prototype solardriven engine in the world. The invention was regarding a pumping machine, which the air was heated by utilizing the solar energy to expand to do work on drawing water. During the period of ***5 to ***0, many sets of solarpowered device and other solar energy device were developed in the world. All of these device were mostly employed photospot method to collect the sunlight, which the power of engine was not so effective, and actuating medium were mainly the water steam that were expensive in cost and impractical in value. Most of the machine were designed and manufactured by the fans of solar energy.