A circulation heater is a complete heating system
that can be set up in-line or in a closed-loop configuration. This makes
them the heating element of choice in applications such as military,
off-shore, commercial, and industrial operations. There are several
components that combine together in such a heater. It comprises a set of
pre-assembled heating elements, terminal housing, insulated pressurized
receptacle, inlet and outlet channels that are threaded for securing a
connection, and other mounting components.
These heaters allow the user to set up a compact
heating unit that starts working instantly. Immersion heaters are the
most common heat source within a circulation-type heater. These heaters
can be used in a myriad of applications for heating air, gases, water,
liquid chemicals, fuels, oils, solvents, and so on. Such heaters are
also used for maintaining the right viscosity of materials in the
plastic injection molding process. They need to be specifically
engineered according to the process they are used in.
Here are some major advantages of a circulation heater:
- They cause minimal heat loss because the heat is instantly
passed on to the process material. The insulation on the vessel further
prevents heat loss from taking place.
- Such heaters are fitted with a thermostat, allowing the user to
precisely control the amount of heat that needs to be generated. This
makes for a more energy-efficient heating process.
- They can be installed in several different configurations, making
them an extremely versatile heating element in all types of industries.
- The heater(s) can be set up in a short time by a single person.
Setting up the inlet and outlet connections and securing the electric
screw terminals are the two crucial steps in the installation process.
They start functioning almost immediately.
- If maintained according to the manufacturer’s guidelines, such
heaters provide an exceptionally long service life. Just get them
checked for efficiencies from time-to-time for nominal costs to enjoy
their services for several years at a stretch.
How should you choose the best circulation heater?
Whether it is circulation or immersion heaters, some
basic guidelines should be followed when selecting heaters. Speaking
specifically of a circulation-type heater, it is important to first
evaluate the requirements of your application. The nature of your
application has a direct bearing on the selection of the vessel
material, process temperature, the heating capacity of the heater and
its watt density, and the sheath of the heating element. For instance,
if you need to heat highly corrosive solutions, you might need to use
Incoloy heater material for optimal performance. Also, you would need to
consider other factors such as indoor or outdoor usage.
Also, it is vital to choose heaters that comply to
codes and standards such as ASME, UL, the NEC, and so on. Selecting the
right circulation heater is a task best performed in consultation with an experienced distributor of industrial heating products.