Energy-efficient solar shade system for skylights
First Claim
1. An energy saving skylight cover system, for controlling solar radiation at an incidence angle, defined as the angle between sun and horizon, entering an interior space through a skylight, comprising:
- a) a frame (14) positionable over such skylight; and
b) an angle-selective radiation controlling windowpane (16), having at least one multiple-dielectric coating which redirects solar radiation impinging on such skylight at an incidence angle greater than a characteristic angle, the angle designed into such skylight, related to its orientation on a roof, including the angle of the roof and the geographical location of the building together with its built-in optimizations of rejection or acceptance of solar heat gain, and which admits radiation impinging on such skylight at an incidence angle less than said characteristic angle.
1 Assignment
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Accused Products
Abstract
An energy saving skylight cover system operates selectively in summer and winter to optimize transfer of the sun'"'"'s radiation through the skylight into an interior space. The skylight cover system comprises optical transmission modifying panels and radiation scuppers that make its functional characteristics responsive to the sun'"'"'s incidence angle. In summer mode, with high average inclination of the sun, the skylight cover system absorbs or reflects back the undesirable solar heat. In winter mode, the skylight cover system permits majority of the sun'"'"'s rays to enter the interior space, permitting desirable solar heat gain. The determination of rejecting or accepting solar heat gain is made by the skylight cover system according to a designed-in characteristic angle. The characteristic angle is a function of the orientation of the skylight and the roof, and the geographical location of the building. For manufacturing cost-effectiveness, a finite set of skylight cover pane designs with predetermined characteristic angles is selected. The radiation modifying panels consist of one or more diffraction gratings, with additional spectrally selective and angle-selective coatings and materials for selective rejection and transmission of ultraviolet, infrared and visible portions of the solar radiation to provide maximum energy efficiency combined with optimum thermal and optical comfort of the building occupants.
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Citations
18 Claims
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1. An energy saving skylight cover system, for controlling solar radiation at an incidence angle, defined as the angle between sun and horizon, entering an interior space through a skylight, comprising:
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a) a frame (14) positionable over such skylight; and b) an angle-selective radiation controlling windowpane (16), having at least one multiple-dielectric coating which redirects solar radiation impinging on such skylight at an incidence angle greater than a characteristic angle, the angle designed into such skylight, related to its orientation on a roof, including the angle of the roof and the geographical location of the building together with its built-in optimizations of rejection or acceptance of solar heat gain, and which admits radiation impinging on such skylight at an incidence angle less than said characteristic angle. - View Dependent Claims (2, 3, 4, 5)
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6. An energy saving skylight cover system, for controlling radiation entering an interior space through a skylight, comprising:
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a) a frame (14) positionable over such skylight; b) a set of radiation scuppers (18,20) mounted inside such skylight; and c) a diffraction grating windowpane (16) capable of deflecting an input radiation beam to impinge on said set of radiation scuppers (18,20). - View Dependent Claims (7, 8, 9)
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10. An energy saving skylight cover system, for controlling radiation entering an interior space through a skylight, comprising:
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a) a frame (14) positionable over such skylight; b) a set of energy absorbing radiation scuppers (18,20) mounted inside such skylight; and c) a diffraction grating windowpane (16) capable of deflecting an input radiation beam to impinge on said set of radiation scuppers (18,
20).
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11. An energy saving skylight cover system, for modifying the transmission of an incident light beam entering through the skylight, into an interior space, comprising:
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a) a frame (14) positionable over such skylight; b) a partially energy reflecting windowpane (16) mounted in said frame (14) and comprising at least one diffraction grating, capable of transmitting a fraction of an incident radiation beam into such interior space. - View Dependent Claims (12, 13)
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14. An energy saving skylight cover system, for controlling radiation entering an interior space through a skylight, comprising:
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a) a frame (14) positionable over such skylight; b) a set of radiation scuppers (18,20) mounted inside the interior space enclosed by said skylight; and c) an angle-selective radiation control windowpane (16) capable of redirecting radiation impinging at an incidence angle greater than a characteristic angle to said set of radiation scuppers (18,20) and admitting into such interior space radiation impinging at an incidence angle less than said characteristic angle. - View Dependent Claims (15, 16, 17, 18)
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Specification