Liquid Heat Transfer Systems – FX

Applications
Caloritech™ hot oil heat transfer systems are custom
designed to provide high temperature process heat
without the necessity for high pressure design common to
saturated steam transfer systems.
Accurate process temperatures up to 375°C (707°F) can be
maintained in molds, platens, presses and jacketed vessels
or pipes under practically negligible pressure conditions.
Ratings available to 3000 kW at 600V.

From the table below note the high steam operating
pressure required whenever high process temperatures
are needed. Even at 375°C (707°F) the Caloritech™ oil
heat transfer system functions at a pressure less than 30
PSIG depending on the transfer fluid used.

Construction
Type FX transfer systems are supplied as fully prewired and
piped packaged assemblies customized to your specific
application. You merely connect the process pipes to the
system inlet and outlet, mount the separately supplied
expansion tank, and connect to your electrical supply.

Each system comes equipped with low density EX type
circulation heaters mounted on a structural steel frame.
Centrifugal, direct drive pumps are standard. Positive
displacement pumps are available on request.
Special inlet and outlet valves with high temperature
packing and flanged connections are standard. Bypass,
drain, fill and bleed valves are installed in the piping loop
with all welded connections for 1/2” NPT pipes and larger.
A strainer is installed on the system inlet with an attached
fill valve.

Liquid Heat Transfer Systems - FX — Liquid Heat Transfer Systems – FX

Other mechanical devices provided include an expansion
tank with sight glass and vent, pressure gauge(s), low
and high pressure switches or optional differential
pressure switches.
Systems are available with motorized valves for heating
and cooling applications.
Standard electrical controls include a fully prewired control
panel with disconnect, HRC fusing, derated magnetic
contractors, electronic indicating and fully adjustable
temperature control, electronic high temperature limit
control, optional step controller, switches and pilot lights.

Selection
Contact the factory or your nearest Caloritech™ agent or
distributor to obtain complete specifications and prices for
an FX electric heat transfer system custom designed to
your specific needs.

Flow Diagram
The heat transfer fluid is circulated through the electric
heaters and the process in a closed loop. All components
are connected with factory tested, leak proof joins. An
expansion tank, vented to atmosphere and elevated above
the system maintains a constant positive suction head on
the pump. A bypass valve is used on cold start-up. The
pump and heater are protected against external shut-off
by an outlet high pressure switch. Loop temperature is
automatically controlled.