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An Overview of Different Types of Heaters

Heaters are one of the most common heaters used in chemical, food, paint, and every industry in which intense heating and processing is required. These heaters are different than conventional heating systems because of their design and configuration. Following are some of the differences between normal and Heaters:

Convention Heaters


Conventional heaters usually have storage tanks, in which the heated medium can be stored temporarily. Many Heaters are tankless or instantaneous, which means that the heated fluid will be directly transported to the system where it is required.
Conventional heaters cannot be attached directly to the system or vessel containing the fluid. These heating systems can be a part of the tanks or vessels containing the fluid.
Heating through conventional heaters is time consuming. Heaters are also called instantaneous heaters. This is because they take considerably less time than convention heating systems to heat the same amount of fluid.

Heaters can be categorized into different types according to their construction and areas of application. Following are some of the commonly used industrial Heaters:

Flanged Heaters

Flanged heaters consist of heating tubes bent and welded to the base of the heating plate. These through-the-side immersion heating systems are attached to the vessel in a fixed manner (usually welded).  These heaters are usually used in high pressure gas vessels, boilers, food processing, cleaning tankers etc. although these heaters are precise, cleaning and maintenance of these systems is a bit tricky, as they cannot be detached from the vessel containing the fluid.

Over-the-Side Heaters

When it comes to construction and design, over-the side heaters are similar to flanged heaters. A difference between these two heating systems is; over-the-side heaters are used for tankless vessels which are directly routed to the system where the heated fluid is required. Whereas flanged Heaters are usually used in those industries where the fluid is stored  before processing. As the name implies over-the-side heaters are attached (screwed or welded) over the top, and hanging along the side of the vessel.  

Screw Plug Heaters

Unlike flanged or over-the-side heating systems, screw plug heatersconsist of one up to six (6) heating tubes (some heaters contain more than one tubes but not as many as flanged and over-the-side heaters). The immersion heating system is usually mounted along the side, at the base of the tank through threaded coupling in the vessel. These Heaters are used in industries where intense heating is required in a small area. They are used in detergent manufacturing, and food processing industries.

Pipe Insert Heaters

These heaters are used to heat fluids indirectly and they serve the purpose of heating corrosive liquids using a pipe. The is not in direct contact with the fluid and can be easily maintained without emptying the tank.  These heaters can consist of a wither coil or rod-like heating elements which is first enclosed in atmospheric pressure and air tight bayonet pipe and then flanged into the tank.  

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