Fulton Ancillary Equipment SteamPac Unfired Steam Generators - Manual (Page 30)

Fulton Thermal Corp.*SteamPac Unfired Steam Generators Manual* Version 2010-0201
Page 30
temperature. A wide variety of thermal fluids have been used
successfully in Fulton Thermal Fluid Heater systems, however, your final
selection should be made in conjunction with Fulton Thermal Corporation
or the fluid manufacturer.
3. The safe maximum bulk temperature of the fluid must be strictly adhered
to. The safe maximum temperature of the fluid varies, but a typical
maximum for many types of mineral oil based fluids is 600°F (320°C).
4. Special care must be taken when consulting fluid manufacturers’
literature, as maximum fluid temperatures quoted are the actual limit to
which any of the fluids may be subjected. It is important to remember
that in any fired heater there exists a “film temperature” which is higher
than the temperature of the “bulk” of the fluid.
5. It is the BULK fluid temperature and NOT the FILM temperature that is
indicated by the instruments.
6. As a general guide, the following list of fluids that have given satisfactory
service over many years is provided.
7. This is by no means a complete list. Any fluid specifically designed for
heat transfer use may be considered; multipurpose oils are not
acceptable.
a. AMOCO Transfer Oil 4199
b. CHEVRON Teknifax
c. DOW Dowtherm A or G
d. EXXON Caloria HT 43
e. MOBIL Mobiltherm 603 or 605
f. MONSANTO Therminol
g. MULTITHERM PG1, IG4, IG1
h. PARATHERM Paratherm NF or HE
i. PETROCANADA CalFlo, AF, Purity FG, CalFlo LT
j. SHELL Thermia 23
k. TEXACO Texatherm
8. Any fluid specifically designed for heat transfer use must also exhibit
these characteristics:
a. Be a stable and homogenous liquid to a temperature of
at least 100°F over and above the maximum intended
temperature of utilization, compatible with metals used in
the installation, and tolerating contact with atmospheric
air.
b. The absence of any solid matter in suspension.
c. Non-toxic in the case of leakage.
d. Sufficient lubricity, i.e. not likely to cause seizure.