With great prices, fast shipping and free returns, shopping with us couldn’t be easier. A solar thermal system fluid transfers heat from the collector to the storage tank, prevents corrosion and scale formation and helps the heating system resist freezing while maintaining stable thermal properties over a wide range of temperatures.
PG has a long track record of being used in solar heating systems. In any hydronic closed-loop solar heat collector system, the heat transfer fluid is the lifeblood. It must be sealed and pressurized in the solar heat piping, much like the Freon fluid in a refrigeration system.
Our solar heat transfer fluids are designed for use with hot plate and vacuum tube solar heating systems. The most popular thermal fluids in the range are the Sentinel R100 Solar Thermal Fluid, a stable, non-toxic glycol fluid and the Cura Solar Heat Transfer Fluid, a ready to use fluid that offers frost protection to -28°C.
Propylene glycol (PG) has become the most common heat transfer fluid used in closed-loop solar heating systems that contain antifreeze. It has a long track record over many decades in this application and is widely available from a number of sources.
Most solar thermal systems use antifreeze as the liquid to transport heat from the solar panel to the cylinder. However, there are a few drain back systems that only use water. The antifreeze is normally non-toxic propylene glycol (as opposed to toxic ethylene glycol). An antifreeze change may be required for your solar system.
At BES, we understand the importance of having the right solar thermal system fluid, which is why we offer high-quality system fluids that meet the highest industry standards. Whether you need thermal fluid, solar cleaner, solar fluid or demineralised water, get a good deal on solar thermal system fluid when shopping at BES.