The Paratherm HR™ Heat Transfer Fluid is an
alkylated-aromatic based heat transfer fluid
formulated for closed loop liquid phase heating
to 650°F in fired heaters and 675°F in waste
heat recovery and full convection heaters.
Applications Include...
- Gas Processing
- Chemical Processes
- Waste Oil Recovery
- Biodiesel Production
- Plastic Processing
Paratherm HR Heat Transfer Fluid offers greater
thermal stability than competitive aromatic based
fluids that cover similar temperature ranges.
Testing (ASTM D6743) shows that, compared to
its closest competitor, Paratherm HR Heat
Transfer Fluid experiences 1/2 the amount of fluid
degradation when maintained at 700°F for 500
hours. Less degradation means less maintenance
and longer fluid life.
Centrifugal pumps are generally specified around
the fluid viscosity at the desired operating
temperature (usually less than 2 cps). Capacity
falls off significantly above 300 cps. So the actual
minimum start-up temperature of a fluid is where
the viscosity curve crosses the 300 cps line.
Paratherm HR Heat Transfer Fluid’s lower cold
start-up temperature of 13°F (-11°C) offers
a significant advantage over other high
temperature fluids.
Drums should be stored inside to prevent
water from getting into the heat transfer fluid.
If sealed drums must be left outdoors, they
should be stored on their sides. While
unopened totes are weatherproof, they should
not be stacked if left outdoors. If the fluid is to
be stored outside below its minimum
pumpable temperature, the containers should
be moved indoors to warm up before charging
the fluid into the system.
In many cases, changing fluid involves a
straightforward drain and fill. There are very
few fluids that are so incompatible that 10-15%
residue will affect the new Paratherm. If you
have any questions, contact us.
Unless required for product quality reasons,
new systems do not need to be cleaned before
Paratherm is charged. The amount of chemical
coatings, oils, and other manufacturing
residues are usually not enough to affect the
fluid life. All that is necessary is to install a Ystrainer
with a minimum 60 mesh screen up
stream of the pump to catch any metal or
welding residue. The screen can be removed
once the system has been cycled twice through
its operating temperature.
The fluid in new systems should be tested
within 9 to 12 months of start-up. New fluid in
existing systems should be tested within the
first month of operation to establish a base line
for future testing.
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