Efficient Plant Jan./Feb. 2023 - 26

fluid management
Build a Durable,
Reliable Heat
Transfer System
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DESIGN CONSIDERATIONS
When designing a new heat-transfer system, carefully
considering each component will reduce the frequency
and severity of future problems. Matching the fluid type
and operating temperature to the system and application
will preserve fluid life and reduce machine downtime. It
may be necessary to adhere to industry-specific guidelines,
such as using food-grade heat-transfer oil in food,
beverage, and pharmaceutical processing.
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INSURANCE
Talking to insurers before installation is an important
step. They can advise on factors such as sampling
frequency, sampling procedures, and what training is
needed. If a heat-transfer system is not managed to the
insurer's stipulation, coverage may be voided.
SUCCESSFUL SET UP
Some components in a system only have a function during
installation and must be removed before introducing
thermal oil. A strainer, for example, is only required during
installation to catch debris that could enter the system
during construction. Keeping strainers and other unneeded
parts in the system can lead to carbon build up, causing
flow issues. System designers offer advice on which
components to remove.
Prior to introducing heat-transfer fluid, clean and flush
Follow these basic procedures to have confidence that your heat-transfer
system will perform to specification and operate reliably.
THE DESIGN OF a thermal fluid system will determine how well
the fluid performs once in use. Factors such as pipework positioning,
ventilation, and installation will have an impact on the system's lifespan.
Taking the time to develop the best system for the application is
a worthwhile investment.
the system to remove any contaminants. Cleaning and
flushing fluid should be circulated in the system at
108 C (226 F) to 122C (252 F). This range is key because it
activates detergent additives in the cleaning fluid, allowing
them to mix with suspended loose particles.
After cleaning, the system can be filled with heattransfer
oil. Once the system is circulating at proper levels
in an expansion tank, apply heat in 15 C (27 F)-degree
increments until the transfer fluid reaches 105 C (221 F).
Water in the system can lead to contamination with
For more information from Global Heat Transfer, Chicago, visit
globalhtf.com or email americas@globalhtf.com.
26 | EFFICIENTPLANTMAG.COM
particulate matter and iron, so it's important to remove
any water during start up. This can be done by increasing
the temperature slowly, in line with system conditions. In
some instances, a Light Ends Removal Kit (LERK) can be
used to remove water. Once all water is removed, the heat
can be increased to 125 C (257 F), then in increments, until
the fluid reaches operation temperature. EP
JAN/FEB 2023
http://www.globalhtf.com http://www.EFFICIENTPLANTMAG.COM
Efficient Plant Jan./Feb. 2023

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