OPERATING RANGE Minimum Startup Temp (300cSt) HR Synthetic-Aromatic Heat Transfer Fluid’s lower cold start-up temperature of 13☏ (-11☌) offers a significant advantage over other high-temperature fluids. So the actual minimum start-up temperature of a fluid is where the viscosity curve crosses the 300 cps line. Capacity falls off significantly above 300 cps. Centrifugal pumps are generally specified around the fluid viscosity at the desired operating temperature (usually less than 2 cps). Less degradation means less maintenance and a longer fluid life. Testing (ASTM D6743) shows that, compared to its closest competitor, HR synthetic-aromatic heat transfer fluid experiences 1/2 the amount of fluid degradation when maintained at 700☏ for 500 hours. HR synthetic-aromatic thermal fluid offers greater thermal stability than competitive aromatic based fluids that cover similar temperature ranges. HR synthetic-aromatic heat transfer fluid is an alkylated-aromatic based heat transfer fluid formulated for closed-loop liquid phase heating to 650☏ in fired heaters and 675☏ in waste heat recovery and full convection heaters.
