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VAPORTHERM G™ HEAT TRANSFER FLUID
VaporTherm G™ is an industrial grade
heat transfer fluid rated for service to 600°F. The high
quality feedstock is formulated specifically for extended
service. It has outstanding thermal stability and oxidation
resistance under sustained high temperature operating conditions.
The Vaportherm G fluid is non-corrosive to steel and other
system materials and has a vapor pressure below atmospheric
at its maximum rated operatingtemperature.
These characteristics provide a long service life and low
operating cost for both fluid and equipment, and allow Vapor
Corporation to guarantee the heater coil for 10 years. The
fluid is designed for use in demanding industrial process
equipment, and in marine bulk transfer and storage applications.
The fluid is easily disposed. It can be mixed with used lubricating
oils and recycled locally.
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Typical Physical Properties
|
| Feedstock |
|
Paraffinic
Hydrocarbon |
| Appearance |
|
Transparent,
Pale Yellow |
| Taste
& Odor |
|
Faint
(oily) |
| Maximum
Bulk Temperature |
|
600°F
(316°C) |
| Maximum
Film Temperature |
|
650°F
(343°C) |
| Flash
Point (coc) |
ASTM
D-92 |
440°F
(227°C) |
| Fire
Point (coc) |
ASTM
D-92 |
500°F
(260°C) |
| Autoignition |
ASTM
D-2155 |
700°F
(371°C) |
Atmospheric
Boiling Point,
10% Fraction |
ASTM
D-1160 |
779°F
(415°C) |
| Coefficient
of Thermal Expansion |
|
0.00059/°F |
| Heat
of Vaporization (Calculated) |
|
77.19
Btu/lb |
| Density,
lb/gal @ 60°F (16°C) |
|
7.17 |
| Pour
Point ASTM D-97 |
|
5°F
(-15°C) |
| Pumpability:
Centrifugal @ 2,000 centipoise |
|
20°F
(-7°C) |
| Average
Molecular Weight |
ASTM
D-2502 |
443g/mole |
Typical laboratory values, not guaranteed
for all samples. |
FLUID STORAGE
Do not allow water to collect on head of drum.
If fluid must be temporarily stored out of doors, drum must be laid
on side.
PRESSURE TESTING THE SYSTEM
Do not use water to pressure test system if at
all possible. Consider inert gas.
CHARGING THE SYSTEM
Use small self-priming pump. Fluid should be
added as close to pump suction as possible. Do not use main circulating
pump. Open all block and control valves and all high point vents.
Close vents when fluid comes out. Add until expansion tank is 1/2
full. Close block valve on pump discharge and start pump. Open valve
one quarter open to allow fluid to circulate slowly through system.
If pump does not cavitate after 5-10 minutes, open valve more. Increase
valve opening until circulation can be maintained. If pump cavitates,
shut down and add more fluid. Repeat as necessary until all air
pockets have been removed. Fill system to appropriate level in expansion
tank. DO NOT ALLOW PUMP TO OPERATE WITH VALVES WIDE OPEN UNTIL ALL
AIR POCKETS HAVE BEEN ELIMINATED.
INITIAL STARTUP AND BOIL-OUT
Allow fluid to circulate at 220°F. Increase
temperature in 5°F intervals. If pump begins to cavitate or
fluid comes out of expansion tank, reduce temperature 3°F. Allow
time for water to vent from expansion tank. Once system has stabilized,
increase temperature 5°F. Repeat as necessary until system is
stable. (This heat transfer fluid is immiscible with water. Allowed
to stand, water will gravitate to the bottom of the mixture. Liquid
water may be easily drained from the system's low point drain valves.)
THERMAL FLUID ANALYSIS
Heat transfer fluid should be analyzed after
6 months of operation and annually thereafter. Contact Vapor Corporation
to arrange for these analyses.
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