FULTON FT-0080C, Installation, Operation, Maintenance And Parts Manual

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FT-C Vertical Electric Thermal Fluid Heater Manual 12 2013 ISSUE 1
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2.9
COMBINATION EXPANSION/DEAERATOR/THERMAL BUFFER TANK
Fulton Ltd's efficient design combines the operation of the expansion, deaerator, and thermal buffer
tanks. Installation is considerably simplified by virtue of this arrangement.
The tank will be constructed of carbon steel. It shall be supplied with expansion section liquid level
switch and PN16 flanged connections.
The tank may be built to BS EN 13445: 2009 upon request. Non-coded tanks should not be
pressurised above 0.5 barg.
2.9.1
EXPANSION SECTION
The expansion section is vital to the thermal fluid system. From ambient to operating temperature,
the thermal fluid in the system will typically expand in the range of 25%-50%, and a vessel capable
of handling this expansion is mandatory. The customer should confirm the expansion rate of the
chosen fluid and system volume.
2.9.2
DEAERATOR SECTION
At start up the primary purpose of the deaerator section is to remove all volatiles from the system to
avoid pump cavitation. The deaerator section also allows oxygen to be vented from the system on a
continuous basis during operation to avoid oxidation of the thermal fluid, and removes other volatile
particles generated by the fluid itself during system operation. This section of the tank should be
insulated.
FIG. 8 FT-L EXPANSION/DEAERATION/THERMAL BUFFER SECTIONS
2.9.3
THERMAL BUFFER SECTION
A system of interconnecting pipe work in the thermal buffer tank section prevents the movement of
any oil that has not cooled sufficiently into the expansion section. This avoids contact of very high
thermal fluid temperature with oxygen contained in the atmosphere, which causes fluid breakdown.
DO NOT insulate this section.
Please see FT-L Technical Information Sheet for FT-L Dimensions and Specification.