When you re choosing a glycol bear in mind the following.
Buy glycol for solar panels.
B suitable for solar heat recovery systems using evacuated tube flat plate and thermodynamic solar panels where a non toxic classification is preferred.
Replace panel with another new or sh.
Always mix in as little glycol as possible to keep optimum efficiency but never risk burst pipes.
Repair panel if it has copper tube risers.
Less efficient than solaris dtx.
Propylene glycol pg has become the most common heat transfer fluid used in closed loop solar heating systems that contain antifreeze.
Based on propylene glycol and reversibly evaporable inhibitors to prevent corrosion scaling and biological fouling.
Replace both panels with something else.
Never use less than 20 glycol in the mix.
Bodge system up with the 1 good panel until you can do a proper work around.
Never use more than 60 glycol in the mix.
For solar thermal applications mixtures based on propylene glycol or the green glycol are recommended.
My issue is that the glycol is proving very difficult to remove the air from when i purge the system with a charge pump it that the air does not separate easily from the glycol mix and stays in solution.
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.
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.
This is obviously catastrophic for any solar thermal installation and must be avoided.
Dynalene solar glycol xt thermal heat transfer fluid is specifically designed for your solar thermal and geothermal applications.
The glycol is a clear red fluorescent liquid with a faint odor based on physiologically unobjectionable propylene glycol and water.
Scrap metal yards are a good source for sh panels.
It has been designed especially for utilization fluid in solar heating equipment under elevated thermal conditions vacuum tube collectors.
The product comes as a pre mixed solution and requires no dilution.
It has a long track record over many decades in this application and is widely available from a number of sources.