| 摘要 |
A solar heating device for heating a liquid used in the device as the refractive medium. A lens and a heat absorbing member carry the liquid and are connected together so that the liquid may be communicated therebetween. The lens concentrates the solar energy on the heat absorbing member when the lens is full of the liquid, thereby increasing the temperature of the liquid in the heat absorbing member. In a failure condition where the liquid is drained from the heat absorbing member, the liquid also is drained from the lens, decreasing the refraction of the solar energy focused by the lens on the heat absorbing member and thereby decreasing the temperature of the heat absorbing member to avoid a fire. |
