Propylene Glycol For Solar Panels

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

Propylene glycol for solar panels.

Less efficient than solaris dtx. For solar thermal applications mixtures based on propylene glycol or the green glycol are recommended. When commissioning a pressurized glycol solar hot water system it is essential that all the air in the solar loop is removed. The renewable green alternative to ethylene or propylene glycol has a slower thermal degradation rate than both ethylene glycol and propylene glycol and outperforms propylene glycol s viscosity at lower temperatures.

Pipes within the solar panels will transfer hot water from the panels to a water storage tank or when a transfer liquid is used the transfer fluid which is contained in a. B suitable for solar heat recovery systems using evacuated tube flat plate and thermodynamic solar panels where a non toxic classification is preferred. The process of filling the plumbing system with this antifreeze while purging all the air out must be done systematically and in the right order. The potable water and propylene glycol never mix and are held in separate chambers within the solar water heater.

However you should always mix as much water as possible with your choice of glycol product as simple water is the ideal solar fluid. Hydronic heating systems must be filled with water to provide the heat transfer fluid htf that makes them work. Based on propylene glycol and reversibly evaporable inhibitors to prevent corrosion scaling and biological fouling. Prosol l ht is a clear yellow colored practically odorless liquid based on virgin not recycled propylene glycol water and specially designed industrial package of liquid inhibitors it has been designed specifically for use as a heat transfer fluid in solar thermal systems operating under elevated thermal conditions vacuum tube collectors.

It has a long track record over many decades in this application and is widely available from a number of sources. This glycol is completely non toxic safe for all types of solar heating applications and is made from sustainable bio based raw materials. The industry standard for solar fluid is a mix of propylene glycol and water. Air in the loop can cause pump.

It s non toxic biodegradable and relatively stable. In the case of the closed loop solar heating system the htf is typically a mixture of water and propylene glycol.