FULTON FT-0080C, Инструкция по установке, эксплуатации, обслуживанию и каталог запасных частей

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FT-C Vertical Electric Thermal Fluid Heater Manual 12 2013 ISSUE 1
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a) The selection of the thermal fluid most suited to your application is very important. Factors to
be considered include efficiency, thermal stability, and adaptability to various systems, and
physical properties, including vapour pressure, freezing point, and flash and fire points.
b) Heat transfer fluids of both mineral and synthetic origin have been specially developed to
give thermal stability over a very wide range of 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 Ltd. or the fluid manufacturer.
c) The safe control and monitoring of the thermal fluid temperature is of paramount importance.
d) 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 320°C.
e) 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.
f) It is the BULK fluid temperature and NOT the FILM temperature that is indicated by the
instruments.
g) As a general guide, the following list of fluids that have given satisfactory service over many
years is provided.
h) This is by no means a complete list. Any fluid specifically designed for heat transfer use may
be considered; multipurpose oils are not acceptable.
1. AMOCO Transfer Oil 4199
2. CHEVRON Teknifax
3. DOW Dowtherm A or G
4. EXXON Caloria HT 43
5. MOBIL Mobiltherm 603 or 605
6. MULTITHERM PG1, IG4, IG1
7. PARATHERM Paratherm NF or HE
8. PETROCANADA CalFlo, AF, Purity FG,
CalFlo LT
9. TEXACO Texatherm
j) Any fluid specifically designed for heat transfer use must also exhibit these characteristics:
1. Be a stable and homogenous liquid to a temperature of at least 38°C over and above
the maximum intended temperature of utilisation, compatible with metals used in the
installation, and tolerating contact with atmospheric air.
2. The absence of any solid matter in suspension.
3. Non-toxic in the case of leakage.
2.18.2
SELECTING A THERMAL FLUID