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U.S. Department of Energy
Office of Scientific and Technical Information

Liquid for absorption of solar heat

Patent ·
OSTI ID:5963667

A liquid for the absorption of solar heat, useful as an heat-absorbing medium in water heaters and heat collectors comprises: a dispersing medium selected from the group consisting of propylene glycol, mixture of propylene glycol with water, mixture of propylene glycol with water and glycerin, and mixture of glycerin with water, a dispersant selected from the group consisting of polyvinylpyrrolidone, caramel, and mixture of polyvinylpyrrolidone with caramel, and a powdered activated carbon as a black coloring material.

Assignee:
Dainichiseika Colour and Chemicals Mfg. Co. Ltd. (Japan); Kabushiki Kaisha Komatsu Seisakusho (Japan)
Patent Number(s):
US 4482467
OSTI ID:
5963667
Country of Publication:
United States
Language:
English