초록 ▼

This invention relates to a photovoltaic system comprising a casing having mounted therein a plurality of solar cells. The casing has a front and opposite thereto, a rear. The front of the casing is provided with a light-transmitting panel for transmitting solar light to the solar cells. The rear is

This invention relates to a photovoltaic system comprising a casing having mounted therein a plurality of solar cells. The casing has a front and opposite thereto, a rear. The front of the casing is provided with a light-transmitting panel for transmitting solar light to the solar cells. The rear is a double wall. A first wall is in contact with the back of the solar cells, and on its side away from the solar cells is of a dark-opaque color, i.e. a solar light absorbing surface. The second wall is a light-transmitting enclosure of the dark-opaque colored side of the first wall, but spaced therefrom so as to produce a greenhouse effect. A method to remove snow, frost, and ice over a photovoltaic system involves maintaining the light-transmitting panel at an angle with the horizontal, receiving reflected solar rays from the surroundings of the photovoltaic systems through the light-transmitting enclosure to the outer side of dark-opaque color to be absorbed by the outer side and converted into heat to be transmitted to, and thereby to raise the temperature of the light-transmitting panel. Simultaneously, the light-transmitting enclosure creates a greenhouse effect and thereby an additional temperature increment to further raise the temperature of the light-transmitting panel to melt or sublimate snow, frost, and ice present thereon.

대표청구항 ▼

An outdoor snow removing photovoltaic system comprising a casing having mounted therein a plurality of solar cells, said casing having a front and opposite thereto, a rear, and said solar cells having a light receiving front side and opposite thereto, a back side, said front of said casing being pro

An outdoor snow removing photovoltaic system comprising a casing having mounted therein a plurality of solar cells, said casing having a front and opposite thereto, a rear, and said solar cells having a light receiving front side and opposite thereto, a back side, said front of said casing being provided with a light-transmitting panel for transmitting solar light to said solar cells at the light receiving front sides thereof, said light-transmitting panel having an outer surface, said light-transmitting surface being susceptible to receiving a member selected from the group consisting of snow, frost and ice, inhibiting solar light transmission to said solar cells, said rear of said casing being a double wall, said double wall consisting of a first wall and a second wall, said first wall being in contact with the back side of said solar cells to enable heat transfer, and said first wall on its side facing away from said solar cells being an opaque, dark-colored, solar-light-absorbing light-absorbing surface generating heat, said second wall being a light-transmitting enclosure of said dark-colored side of said first wall, but spaced therefrom as to produce a greenhouse effect and reduce heat-losses of the solar-light-absorbing surface, whereby reflected solar rays are received by said rear of said casing on said opaque dark-colored side and said light-transmitting enclosure at said rear produces a greenhouse effect increasing the temperature of the cells and thereby of said light-transmitting panel of said front and thereby easing melting of said member selected from the group consisting of snow, frost and ice when present on said light-transmitting surface.