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Solar Panel Tile with Semibotryoidal Amorphous Surface

IP.com Disclosure Number: IPCOM000049391D
Original Publication Date: 1982-Apr-01
Included in the Prior Art Database: 2005-Feb-09
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Whedon, WT: AUTHOR

Abstract

A tile for a solar panel is formed by a process that gives the tile a semibotryoidal (bumpy) surface that traps sunlight effectively. The tile surface can have metal dendrites or pigments to increase the absorption. The tile is durable. It conducts heat well, and it can be formed with internal passages to carry a liquid or a gas for heat transfer. The bulk ceramic has the following composition by weight percent: 40 percent kaolin 30 percent soda feldspar 15 percent potash feldspar 15 percent dolomite.

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Solar Panel Tile with Semibotryoidal Amorphous Surface

A tile for a solar panel is formed by a process that gives the tile a semibotryoidal (bumpy) surface that traps sunlight effectively. The tile surface can have metal dendrites or pigments to increase the absorption. The tile is durable. It conducts heat well, and it can be formed with internal passages to carry a liquid or a gas for heat transfer.

The bulk ceramic has the following composition by weight percent: 40 percent kaolin

30 percent soda feldspar

15 percent potash feldspar

15 percent dolomite.

In addition, the bulk ceramic contains red iron oxide, which is a pigment that absorbs sunlight and which also acts as a flux and reduces the temperature of vitrification. These components are conventional, but the percentages are critical for proper verification.

The following pigments are added to the absorbing surface of the tile:

7 percent red iron oxide

2 percent cobalt oxide

2 percent chrome oxide

2 percent vanadium pentoxide For an unglazed tile, the pigments can be combined with silica and feldspar in e pot furnace to form a stain which is applied to the green ceramic. Alternatively, the pigments may be applied as a glaze. The glaze is formulated to have the same semibotryoidal surface as the tile. The ceramic tile is fired in an oxidizing atmosphere. The kiln temperature is raised at the rate of about 130 degrees C per hour until the vitrification point is reached (1220 degrees C). From this point, the...