Industrial heaters are frequently used in almost all the industries today right from manufacturing to food processing. There is a variety of heaters that serve different purposes. Being an unavoidable necessity, it is very important for business owners to install a warming solution in their factory premises to serve their purpose.
Installing them may be an easy task as you simply order the supplier or dealer to do so, yet the most challenging part lies in different types of questions and queries before installing-
Please go through the following points if you want to get the most out of your heating devices-
First of all, make an in-depth assessment of what your heating needs exactly are. Looking at the devices randomly may take you on the wrong route
The following are the most common types of heaters on the market based on fuel types
Gas Heaters and Propane(LPG) Heaters
Gas heaters and propane heaters burn natural gas, propane, liquefied natural gas (LNG) or other gaseous fuels to generate heat. The first gas heaters were similar to the Bunsen burner in that both they used a flame to heat air locally. This heated air was spread by convection to warm an entire area. Later, the burner’s flame was used to heat a structure made of asbestos, a strong and incombustible fibre. Although asbestos structures have been replaced by fire clay and other refractory materials, modern gas heaters still operate according to this principle. Gas heaters and propane heaters often use similar designs.
Specifications for natural gas heaters and propane (LPG) heaters include maximum temperature, heating capacity and maximum air flow. There are two parameters for maximum temperature, maximum air temperature and maximum operating temperature.
The maximum operating temperature for gas heaters is the highest temperature that the heater’s coating or protective cover may reach.
The maximum air temperature, as its words suggest, is the maximum temperature of the air exiting from the heater.
Heating capacity is the wattage that gas heaters and propane (LPG) heaters can deliver.
Gas heaters and propane heaters differ in terms of insulation. Choices for insulation include ceramic, magnesium oxide, fluoropolymer, mica, mineral and fiberglass.
The variety of different applications for gas and propane heaters include annealing and heat treating, drying, curing and tempering, melting, and the heating of gases and vapours. Gas heaters and propane heaters are also used to heat clean water, high purity waters and process waters, lightweight oils and degreasing solutions; heavy and medium weight oils, caustic solutions and mild and severe corrosive solutions.
There are many optional features for gas heaters. Some products are indirect-fired, corrosion resistant, finned, and explosion-proof or can be controlled by a microprocessor. Others are designed to provide dynamic power regulation and for cryogenic applications. They can feature custom designs or have an encased coil for maximum heat transfer. Gas heaters can also be fitted with an internal temperature detector, a grounding wire, and multiple / independent timing controls. Other additional features may also include overheat protection, thermostat control; portability and approval by Underwriters Laboratories (UL). Typically, documentation of UL certification is available from the manufacturer.
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Oil Heaters and Kerosene Heaters
Oil and kerosene heaters burn liquid petroleum products to generate heat. They consist of metal columns with cavities and a heating element. Inside these cavities, oil or kerosene flows freely around a heating element. This element, which is located at the bottom of the heater, transfers heat through the fluid in a process called convection. The oil or kerosene acts as a heat buffer or reservoir and provides both a relatively high specific-heat capacity and a high boiling point. Because of its high specific-heat capacity, the oil or kerosene accumulates a large amount of thermal energy in a small volume. This high boiling point allows the fuel source to remain in the liquid phase, and means that oil heaters and kerosene heaters do not have to be high-pressure vessels.
There are many different types of oil and kerosene heaters. The variety include air, band, coil, and cable heaters; drum, duct, and enclosure heaters; and flexible, forced-air, immersion, and induction heaters. Cartridge, cast-in, ceramic fibre, and circulation heaters; Heat torches are forced-process air heaters that may burn oil or kerosene. Oil and kerosene heaters also include over-the-side, radiant flat panel, infrared (IR) and radiant reflective process heaters. Radiant heater elements are used with both radiant reflective and radiant flat panel heaters. Other types of oil and kerosene heaters include room or space heaters, steam injection heaters, along with strip, tubular, and water heaters.
Oil and kerosene heaters transfer heat to a room at a slower rate and over a longer period of time. Using the liquid petroleum as a heat reservoir, they transfer heat via conduction and radiation. Typically, the columns of oil and kerosene heaters are made of metal and constructed as thin fins. In this way, the surface area is large in relation to the volume of the heat reservoir.
Specifications for the heating element include length or height, depth or thickness and width or diameter, some oil and kerosene heaters use single-phase or three-phase power. Others require AC voltage. Typically, industrial heaters use AC voltage instead of DC voltage.
There are a variety of different applications for oil and kerosene heaters. Examples include;
- Annealing or heat treating,
- Curing or tempering
- Operations with gases and vapours,
- Clean water heating
Oil and kerosene heaters are also used to heat process and high-purity waters, lightweight oils & degreasing solutions, heavy & medium weight oils, mild & severe corrosive solutions, caustic solutions, and liquid paraffin. Depending on the application, insulation options are also important to consider when selecting an oil or kerosene heater.
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Common electric heating coil Electrics heaters generate heat by passing an electric current through a high-resistance material. These heating devices have been adapted for commercial, industrial and consumer applications.
Electric heaters radiate heat with the use of a flat panel emitter, radiant reflective element, tubular element, flexible heater element or other type of heating element. A heating element is usually made up of a coil, ribbon (corrugated or straight), or strip of wire that gives off heat similar to a lamp filament. When an electric current passes through it, it glows red hot and converts electrical energy into heat.
Heating elements are mostly either iron-based or nickel-based. Nickel-based heating elements are typically made of nichrome, an alloy that consists of about 80% nickel and 20% chromium. Nichrome is a popular and common material for heating elements because of its high melting point of 2,550°F (1,400°C)
It also will not oxidize at high temperatures and does not expand much when it heats up. It also retains a consistent resistance of about 10% between ambient temperature and maximum operating temperature.
Some key features of electric heaters are portability, precision temperature monitoring & control and design flexibility
Electric heaters are commonly used throughout industrial and consumer products to heat all types of liquids, gases, vapours, and solids. In consumer products, electric heaters are commonly used for heating water, air and even flooring. Industrial applications can utilize much higher wattages and industrial electrical heaters can be used for applications such as heat treating, annealing, melting, and the heating of all types of process fluids.
For more information of our range of electric heaters, please click here
How to calculate how much heat you require
Once you have determined the type of heater for you building you then need to work out which size you require. This can be achieved in the form of a simple heat loss calculation. The most important factors to consider are the dimensions of the building, the length, width and average height. There are a number of online calculators that you can use to work out the heat requirements. Below you can download our heat loss calculation sheet which shows you how simple it is