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Photovoltaic window assembly with solar control properties

A technology for solar control and window assemblies, applied in the field of window assemblies

Inactive Publication Date: 2013-01-23
PILKINGTON GRP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solar control coating positioned adjacent to photovoltaic elements

Method used

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  • Photovoltaic window assembly with solar control properties
  • Photovoltaic window assembly with solar control properties

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0045] Examples 1, 3 and 4 were modeled using different RPEC PV elements. The RPEC PV elements of Examples 1, 3 and 4 absorb different percentages of visible light. The visible light absorption of the RPEC PV element of Example 1 was 91.2%. The visible light absorption of the RPEC PV element of Example 3 was 89.1%. The visible light absorption of the RPEC PV element of Example 4 was 82%. Examples 1 and 2 were modeled with the same RPEC PV element. Thus, the absorption of the RPEC PV element of Example 2 was 91.2%.

[0046] The power density of examples 1-4 uses 1000W / m 2 The illuminance, the visible light absorption rate of 5% of each RPEC PV element and the conversion efficiency of 7% of each RPEC PV element are calculated. Power density expressed as W / m 2 . For Examples 1-4, Tvis is expressed as the percentage of visible light transmitted through the PV window assembly, and U-value is expressed as Btu / hr / sq-ft / °F.

[0047] Two comparable instances (C5, C5 tinted ) a...

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Abstract

A photovoltaic window assembly is provided. The photovoltaic window assembly includes a photovoltaic element, a solar control coating, and a space. The solar control coating is positioned adjacent the photovoltaic element. The space located immediately adjacent a surface of the solar control coating. The space is either between the photovoltaic element and the solar control coating or on a side of the solar control coating opposite the photovoltaic element. Additional embodiments of the photovoltaic window assembly are also provided.

Description

technical field [0001] This invention relates to multifunctional window assemblies. More particularly, the present invention relates to building integrated photovoltaic window assemblies. Background technique [0002] It is known to arrange photovoltaic devices in fields or on rooftops to generate electrical energy. However, most of these photovoltaic devices are not suitable for use in window units because they are opaque. [0003] US Patent No. 6,646,196 (the '196 patent) discloses the use of a photovoltaic cell for powering an electrochromic coating within a window unit. When powered by a photovoltaic cell, the electrochromic coating can change from a transparent state to an opaque state. Thus, electrochromic coatings can be controlled to provide variable light transmission. Also, in their opaque state, electrochromic coatings are able to block solar radiation. [0004] However, these window units have several disadvantages. For example, electrochromic elements are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L25/04H01L31/042H01L31/048B32B17/10
CPCY02B10/20B32B2457/12B32B17/10174H01L25/045B32B17/10055Y02E10/50H01L31/0422H01L31/048H01L31/0488H02S20/26Y02B10/10
Inventor S·E·韦德纳
Owner PILKINGTON GRP LTD