Glycol Solar Panels

Solar365 green homes other the industry standard for solar fluid is a mix of propylene glycol and water.

Glycol solar panels. Air in the loop can cause pump. Typically any time a system has a glycol bulk temperature in the range of 250 f 121 c fluid degradation increases. Air in the collectors and the pipe is pushed out the purge hose back into the top of the bucket by the charge pump. This glycol is completely non toxic safe for all types of solar heating applications and is made from sustainable bio based raw materials.

It s non toxic biodegradable and relatively stable. At first air returns into the bucket and then glycol mixture with air and foam which can be very hot. Glycol used in a solar water heater is unique and must have a few features that regular propylene glycol does not have. During static conditions the solar collectors should be completely empty so that the thermal fluid is not exposed to extreme temperatures.

In some instances glycol antifreeze can also overheat within your home s solar panels leading to a reduction in the life and efficiency of the glycol an unwanted blockage of liquid within the system and potential corrosion of the pipework cylinders or worse still the panels themselves. Propylene glycol pg has become the most common heat transfer fluid used in closed loop solar heating systems that contain antifreeze. However you should always mix as much water as possible with your choice of glycol product as simple water is the ideal solar fluid. 1st it must be able to with stand extreme high temperatures that can and will occur in a solar system including stagnation temperatures that can reach 410 f.

When commissioning a pressurized glycol solar hot water system it is essential that all the air in the solar loop is removed. The spp corn glycol is specifically designed for chillers radiant heating air to water hydronic heat pump and solar thermal applications such as solar hot water or solar space heating. In all three scenarios if a glycol fluid is used the residual glycol remaining in the panels becomes acidic and can cause corrosion issues. Glycol is now pumped out of the bucket filling the solar collectors from the bottom to the top.

The following are some of the most commonly used heat transfer fluids and their properties.