Solar Panel Antifreeze

Propylene glycol pg has become the most common heat transfer fluid used in closed loop solar heating systems that contain antifreeze.

Solar panel antifreeze.

It s good to get it done while it is no. However there are a few drain back systems that only use water. It s non toxic biodegradable and relatively stable. What type of solar system do you have is it sealed or drainback a correctly installed drainback system should not require antifreeze sealed systems require a good quality antifreeze that will not break down with the high temperatures of solar it should also be a premixed antifreeze it is no good injecting a small quantity of antifreeze into the system as it will not mix and so will not protect the system premixed glycol is the best for solar and it should be used to fill the complete.

Nature power solar panels take the sun s energy and turns it into electric current. These types of systems are pressurized and should only be serviced by a qualified solar heating professional. Therefore occasionally i ll filled them with a little more coolant. These solar panels are high efficiency 12 volt solar panels featuring sturdy aluminum frames and high transparency tempered glass tops.

The antifreeze is normally non toxic propylene glycol as opposed to toxic ethylene glycol. Recommended dilution 40 providing total volume of 12 litres for use in solar systems. These mixtures provide effective freeze protection as long as the proper antifreeze concentration is maintained. Antifreeze fluids degrade over time and normally should be changed every 3 5 years.

An antifreeze change may be required for your solar system. Should be sufficient for most single and double panel systems. They have a scratch resistant and anti reflective coating to help keep the solar panel in good shape for many years. It has a long track record over many decades in this application and is widely available from a number of sources.

However you should always mix as much water as possible with your choice of glycol product as simple water is the ideal solar fluid. Most solar thermal systems use antifreeze as the liquid to transport heat from the solar panel to the cylinder. The industry standard for solar fluid is a mix of propylene glycol and water. My solar panels for hot water has a small leak.

The heated water would be stored in a simple insulated home built tank and the heated water would be circulated to pex tubing placed in the concrete floor when needed. Neat propylene glycol with additive package. Antifreeze fluids degrade over time and normally should be changed every 3 5 years.