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THE CERTIFIED NONTOXIC
FLUID FOR PROCESS CONTROL.
Food Grade Heat
Transfer Fluid
MultiTherm
PG-1 ® is
a high quality Food Grade Heat Transfer Fluid for use
in closed loop, liquid phase heating and cooling systems to
600°F.
MultiTherm PG-1 ® has
been successfully used in over thirty-five different industries.
In the chemical processing industry, it is used for temperature
control of batch reactors, in heat recovery from process streams
and exhaust gases and in large central systems where multiple
heat users are involved. In the food processing industry,
MultiTherm PG-1 ® is
used in indirect heating loops for deep frying and baking. In
the plastics industry, it provides accurate temperature
control for platens, molds, extruders and laminating rolls.
For die casing, MultiTherm provides low maintenance control
of die temperature.
The unique formula of MultiTherm PG-1
® assures performance without the potential problems
of many conventional fluids.
FDA Certified Nontoxic USDA Chemically Acceptable
MultiTherm PG-1 ®
meets the specifications of 21CFR172.878 which covers
the use of White Mineral Oils in Food according to the limits
and conditions of the regulation. It is also chemically acceptable
for use as a heat transfer fluid in plants operating under Federal
Meat & Poultry Inspection.
EFFICIENT
Lower Operating Costs
The energy required to achieve a process heat load can be
influenced by the physical properties of the fluid (density,
heat capacity, thermal conductivity, specific heat). MultiTherm
properties result in more efficient use of energy than many
other fluids. Low pressure drops reduce pump horsepower requirements.
Heater outlet temperatures can be reduced since MultiTherm's
high flu film coefficients allow lower approach temperatures.
Lower Equipment Costs
Fluid properties can also affect equipment costs. Many conventional
fluids have high viscosity at ambient temperatures and can require
oversized pumps and/or heat tracing equipment to facilitate
cold startups. MultiTherm PG-1 ®
is pumpable to -13°F with a centrifugal pump, so
startup problems are minimal. Its high fluid film coefficient
can reduce the heat exchanger area required for a given heat
load. MultiTherm PG-1 ® also
has low vapor pressure which can allow specification of less
expensive, low pressure expansion tanks, piping and process
equipment.
NON-FOULING
Long Term Temperature Control
All organic heat transfer fluids undergo thermal degradation
over time. Conventional synthetic fluids or low quality oils
will form soft carbon material (sludge) that eventually coats
all system surfaces, and can form hard coating. Because the
coating acts as an insulator, heat transfer rates are reduced
resulting in longer heat up time, lower production rates, changes
in control response and, in extreme cases, burnout of heater
tubes or electrical elements.
With non-fouling MultiTherm PG-1 ®,
these problems disappear. As it degrades, it produces
small carbon particles that do not stick to system surfaces,
but remain suspended and are easily drained or filtered out.
Since heat transfer surfaces remain clean, system performance
remains constant.
Lower Maintenance Costs
System downtime due to mechanical seal failure, sludge buildup
or heat burnout can result in lost production time as well as
extra direct maintenance cost. MultiTherm can help reduce these
costs. It has lubricating properties that reduce wear on mechanical
seals and packing glands. The fluid is chemically inert and
will not aggressively attack seals or gaskets. System cleaning
is reduced since any carbon formed can be filtered or drained
from the system. By eliminating maintenance problems, MultiTherm
helps reduce the costs.
| PHYSICAL
CHARACTERISTICS |
MultiTherm
PG-1
|
| Chemical
Type |
White
Mineral Oil
|
| Appearance |
Bright,
Clear, Colorless
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| Odor |
None
|
| Pour
Pint, ASTM D97 |
-40°F
(-40°C)
|
| Density
@ 60°F / 16°C |
7.30
lb/gal
|
| Flash
Point, coc, ASTM D92 |
340°F
(171°C)
|
| Autoignition
Temperature, ASTM D2155 |
385°F
(196°C)
|
| Fire
Point, coc, ASTM D92 |
690°F
(366°C)
|
| Atmospheric
Boiling Point (10%) ASTM D1160 |
657°F
(349°C)
|
| Average
Molecular Weight |
350
|
| Maximum
Film Temperature |
640°F
(338°C)
|
| Maximum
Recommended Operating Temperature |
600°F
(316°C)
|
| Pumpable,
Centrifugal @ 2000 centipoise |
-13°F
(-25°C)
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| Heat
of Vaporization @ 600°F / 316°C |
92
BTU/lb (214
kJ/kg)
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| Heat
of Combustion |
19,660
BTU/lb
(45.7 MJ/kg)
|
| Coefficient
of Thermal Expansion |
0.0004/°F
(0.0007/°C)
|
For
more information on Multitherm's Food
Grade Heat Transfer Fluid click
below.
More
Information
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