Solar energy absorber

Abstract

The solar energy absorber is capable of reducing weight, being directly connected to a water supply pipe, increasing pressure of heated water, omitting a pressurizing pump, etc. The solar energy absorber comprises: a water-flowing section including heat collection tubes, which are composed of stainless steel, and connecting pipes; a heat-retaining box accommodating the water-flowing section, including a heat insulating material and having an opening part which is located on the heat collection side; and a cover plate being composed of a transparent multilayer plastic and closing the opening part of the heat-retaining box. The heat collection tubes are arranged parallel. End plates closing ends of the heat collection tubes are connected to the connecting pipes. Each of the heat insulating tubes is coated with a heat-absorbing layer. Parts of the heat collection tubes which are located on the opposite side of the heat collection side contact the heat insulating material.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application is based upon and claims the benefit of priority of the prior Japanese Patent Application No. P2008-158507, filed on May 21, 2008, and the prior Japanese Patent Application No. P2008-235241, filed on Sep. 12, 2008, the entire contents of which are incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates to a solar energy absorber capable of heating water with solar energy.BACKGROUND OF THE INVENTION[0003]A conventional solar energy absorber is shown in FIG. 5. A cover plate 3 is a transparent glass plate. A heat collection section 1 is constituted by a plurality of stainless plates 9, which are mutually adhered. An inner bottom face and inner side faces are covered with an insulating material 4 composed of glass wool so as to keep temperature. The solar energy absorber is partially covered with a metal plate 2 and connected to a water storing tank 5, which is composed of polyethylene and c...

AI Technical Summary

Benefits of technology

[0035](6) since no water storing tank is required, the external shape of the solar energy absorber can be improved.

[0036]As described above, all of the problems of the conventional solar energy abso

Problems solved by technology

(1) the transparent glass plate 3 is too heavy to treat;

(2) as shown in FIG. 6, the stainless plates 9 are mutually adhered, so the plates 9 cannot fully resist water pressure, the plates 9 will be deformed if water pressure of tap water is directly applied thereto, therefore the water pressure must be received by the ball tap 6 and the plates 9 must be separated from the tap water;

(3) water is supplied to the water storing tank 5 by the ball tap 6, the discharged hot water is pressurized by only level difference between the water level in the water storing tank 5 and a level of a water faucet, so pressure of the discharged hot

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