Heat Transfer Fluids

Biolegro PG^TM is a made up of a biobased propylene glycol derived from corn stalks.  This product is  biodegradable, non-toxic and is considered a BioPreferred^sm by the USDA.  This product has great applicability is areas such as:

• Solar Heating
• Heating and Cooling Systems
• Cryogenic Plants
• Industrial Heat Exchangers

• Coefficient of expansion – the fractional change in length (or sometimes in volume, when specified) of a material for a unit change in temperature
• Viscosity – resistance of a liquid to sheer forces (and hence to flow)
• Thermal capacity – the ability of matter to store heat
• Freezing point – the temperature below which a liquid turns into a solid
• Boiling point – the temperature at which a liquid boils
• Flash point – the lowest temperature at which the vapor above a liquid can be ignited in air.

For example, in a cold climate, solar water heating systems require fluids with low freezing points. Fluids exposed to high temperatures, as in a desert climate, should have a high boiling point. Viscosity and thermal capacity determine the amount of pumping energy required. A fluid with low viscosity and high specific heat is easier to pump, because it is less resistant to flow and transfers more heat. Other properties that help determine the effectiveness of a fluid are its corrosiveness and stability.