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DOWFROST™ Geo 20 is a specialty heat transfer fluid formulated with propylene glycol. It is intended for thermal transfer in geothermal heat pump systems (20% PG solution in water).
DOWFROST™ Geo 20 is a ready-to-use propylene glycol heat transfer fluid that contains specially designed corrosion inhibitors that meet ASTM D1384 corrosion protection requirements. The low glycol concentration of DOWFROST™ Geo 20 provides lower viscosity and higher heat transfer efficiency than higher-concentration fluid solutions.
DOWFROST™ Geo 20 has a freezing point of 18.5°F.
Product type: Heat transfer fluid
Recommended use temperature range: −5°C to 100°C (23°F to 212°F)
Concentration propylene glycol, % by volume: 20
Concentration performance additives + water, % by volume: 80
Color: Yellow to green
Specific gravity: 1.017–1.027 25/25°C (77/77°F)
pH of Solution: 9.5–10.5
Reserve alkalinity (min): 3.5 mL
Primary Chemistry:
Propylene glycol (PG)
Flammability or explosion concerns with alcohol based thermal fluids
Corrosion or rust from poorly inhibited glycol fluids
DOWFROST™ Geo 20 is a premium specialty heat transfer fluid engineered for use in geothermal heating and cooling systems and geothermal pumps.
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