New Fluid Protects Solar Thermal Systems

October 21, 2014 By Linda Hardesty

so-blu2DuPont Tate & Lyle Bio Products has collaborated with SolarUS to launch a new biobased heat transfer fluid – So-Blu – designed to protect solar thermal systems from freezing, corrosion and extreme heat damage.

Solar thermal fluids are prone to a host of issues such as degradation that results in the formation of viscous deposits in the solar equipment, leading to a decrease in efficiency, say the partners.

The So-Blu solar thermal fluid uses Susterra 1,3-propanediol (PDO), a renewably sourced glycol alternative. Susterra 1,3-PDO glycol is certified 100 percent biobased by the US Department of Agriculture.

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