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New System Cools Solar Panels Without Using Electricity

2014/02/13 11:50
Kenji Kaneko, Nikkei BP CleanTech Institute
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Tech Corporation Co Ltd commercialized its mist spraying system that prevents the power generation efficiency of a solar power generation system from being lowered due to high temperatures by spraying water over solar panels.

The most distinguished feature of the system is that it does not use electricity. When the heat-receiving area of the system is heated by sunlight, its sub-valve opens, opening the main valve and starting taking water. When the heat-receiving area is cooled by water in the sub-valve, the sub-valve closes, closing the main valve and stopping taking water. As a result, mist is sprayed only by water pressure.