The Science Behind Electric Heater Working Explained!

Before we begin, we must first review a fundamental physics concept that is essential to electrical engineering: resistance. Resistance is the core of electric heating.

Resistance occurs when an electrical current travels through a conductor (for example, a length of metal wire) and electrons clash with particles in the metal, slowing the current. It’s similar to attempting to go along a busy corridor: the more people there are, the more work and energy it takes to reach where you need to go. As a result, high-resistance wires create more heat. In some devices, this warmth is frequently an unwelcome by-product (consider how much wasted heat outdated incandescent lights produce!). But for an electric heater, this is critical.

Resistive heating, commonly known as Joule heating, is used by almost all electric heating systems to generate heat. All electric radiators, panel heaters, and storage heaters employ a resistive wire heating element to warm a space. The only significant change is the size and placement of the wiring. It might be quite long and spread out across an entire floor space, as in an underfloor heating system, or it could be as little and compact as a towel rail’s heating element.

Does this indicate that all electric heaters are the same?

Though most electric heating systems employ Joule heating to generate warmth, how this technology is used varies greatly. After all, if they were identical, there would not be such a diverse choice of heating solutions available. There are several applications for resistive heating, so let’s look at some of the most frequent methods employed by electric heaters.

Convection heaters

Appliances that generate heat using convection employ exposed heating elements to ensure maximum contact with the air. These components may be installed at the base of the device, as with panel heaters, or they may be used in conjunction with a fan to actively draw cold air over the heated wire.

Electric radiators

The heating element of electric radiators is completely encased within the device, so unlike a convection heater, you cannot peek inside to see it at work. They’re enclosed so that heat from the element may be transmitted to the appliance’s body and distributed around the room.

Infrared panels and underfloor heating

Both of these heating systems employ totally enclosed heating elements, although they are configured very differently from electric radiators. Infrared panels employ a length of thin wire stretched out across the surface of the device in a wide ‘S’-shaped pattern, whereas underfloor heating heats your floor space and has wires positioned equally throughout the room.

One easy procedure and hundreds of possibilities to select from

If you’ve been asking, “How do electric heaters work?” all along, you should now have a better idea of what makes them operate. Resistive heating is simple yet efficient, and it may be utilized in a number of ways to provide varied levels of comfort. If you’re not sure which heating technique is ideal for you, contact Shiva Products and let our heating professionals help you discover the right option for your project.

Learn more about ceramic band heaters in this blog, including how they work and how to choose one.

Overview of Ceramic Band Heaters

Ring-shaped ceramic band heaters clamp onto cylinder-shaped surfaces and provide external heating. Ceramic heaters, which conduct heat at medium-to-high temperatures, have a maximum working temperature of 600°C. Their glass wool insulation provides superior thermal efficiency and minimizes heat loss to the environment. 

These heaters usually last longer; however, this isn’t always the case. This is because ceramic blocks, also known as knuckles, are supplied with coiled resistance wire. The coiled resistance wire doesn’t oxidize and burn through as quickly as the ribbon since it has a reduced surface area to interior cross-sectional area ratio.

These heaters can be built with several termination designs and have holes and cutouts. Improved insulation reduces the amount of power required to maintain the barrels at the right temperature by preventing more heat from leaking into the atmosphere. It makes it possible to attach the heater to the pipe more easily and without being constrained by loose fittings or surface flaws. 

Construction of a Ceramic Band Heater

The ceramic mat is held in place, and the core is protected by a sheath material with serrated edges composed of stainless steel, galvanized iron, or aluminum-coated stainless steel. Ceramic fiber knuckles with holes are utilized for optimal heat conductivity and dielectric strength.

These holes are filled with nickel/chromium heating elements to provide the necessary watt density and even heat dispersion. Glass wool insulation is situated between the knuckles and the outer sheath, as seen in the image. The terminal box protects the connection terminal wire and connects to the power source.

What are the best ways to pick a ceramic band heater?

Select a ceramic heater with the wattage that best meets the needs to avoid temperature overruns and extend the heater’s lifespan. Before you buy the ceramic band heater, you should be aware of a few factors. 

First of all, what are band heaters used for? 

They are widely used to heat the nozzles, pipes, and barrels of extrusion and injection molding equipment. They also provide fast indirect heating, which is perfect for a variety of sectors, especially polymers. During configuration, one can select one- or two-piece heaters, various closure kinds, and various lead or post terminal types.

Additionally, you may group them according to specifics like mounting, installation, size, kind of termination, sheath or sleeve, and performance needs. Additionally, thermocouples and adjustable thermostats make temperature control possible.  Temperature regulation is difficult with ceramics because of their propensity to retain heat in addition to their propensity to transfer heat effectively. This can disrupt operations due to overheating, particularly in the plastics sector.

Conclusion

Our selection of ceramic band heater designs includes both conventional and customized choices. The heater is put through a series of quality inspections to ensure both its longevity and quality. Shiva Heaters is a reputable producer and supplier of band heaters, and we provide warranties for our products. For any of your industrial heating requirements, contact us immediately.

What is an Immersion Heater?

Immersion heaters, as the name indicates, are submerged in water, oils, solvents, process solutions, molten materials, and gases, releasing all of their heat within the fluid, resulting in approximately 100% energy efficiency. Immersion heaters come in a range of sizes, kilowatt ratings, voltages, terminations, sheath materials, and accessories. They are frequently custom-designed for a specific use.

Basic immersion heater configurations include screw plug, flange, pipe insert or bayonet, circulation or in-line, booster, and over-the-side.  They are commonly offered in a round or flat tubular shape.  The flat variant can handle a larger watt density without overheating the sheath. Heaters are classified into two types: pressurized (closed) systems and non-pressurized (open tanks).

Common Chemical Applications of Immersion Heaters

Immersion heaters are used in a wide range of chemical processes. Some common applications include:

Heating Acid Baths: In metal treatment industries, acid baths are used for cleaning and etching. These baths need to be kept at a constant temperature for effective results. Immersion heaters made with corrosion-resistant materials are ideal for this.

Oil Heating: In industries where oils are used for reactions or lubrication, immersion heaters ensure the oil remains at the correct viscosity and temperature.

Solvent Heating: Many chemical reactions require solvents to be heated. Immersion heaters can safely and evenly heat solvents without the need for open flames.

Water Treatment: In water treatment plants, immersion heaters are used to maintain the temperature of process water or to help with the removal of impurities.

Chemical Mixing Tanks: Some chemical mixtures require heating to maintain fluidity or to speed up reactions. Immersion heaters make sure the temperature is consistent throughout the process.

Other Uses of Immersion Heaters:

Pressurized systems.

The square flange immersion heater is utilized in industrial water boilers and storage tanks that include degreasing solvents, fuel oils, heat transfer fluids, and caustic solutions. A round or flat tubular heater is brazed or welded to a four- or six-bolt flange, and wire connections are made using screw lug or threaded stud terminals.  These heaters are bolted directly to a companion flange that is welded to the tank wall or nozzle.  Assembly changes are as simple as unbolting the flange and changing the heater, reducing equipment downtime.

Non-Pressurized Systems

Over-the-side heaters are designed in L and O forms and mounted at the top of a tank, with the heated section buried along the side or at the bottom. Over-the-side heaters ensure uniform heat distribution. They are portable, can be readily removed for heating and tank cleaning, and offer a large working surface inside. There are several options for sheath materials, kilowatt ratings, terminal enclosures, and mounting techniques. Over-the-side heaters are meant to heat water, oils, solvents, salts, and acids. They are commonly used for freeze protection.

Conclusion

Immersion heaters play a key role in many chemical process applications by offering safe, efficient, and reliable heating. Whether you’re dealing with corrosive acids, thick oils, or sensitive solvents, there’s likely an immersion heater suited for your needs. By choosing the right type and material, industries can improve their process control, reduce energy costs, and maintain product quality. As technology improves, immersion heaters will continue to be a smart solution for chemical heating challenges.

Types of Infrared Heaters 

• Near-infrared (NIR): It is used for quick operations, and it has a shorter wavelength. These kinds of heaters are apt for drying paints, curing coatings, among others. It ensures that the surface of the given object is heated faster.
• Mid-Infrared (MIR): They are for thick objects and can easily penetrate the given object. They are used for preheating metals and metals that need drying from the inside.
• Far-Infrared: They are used for food processing and even heating of the metal components. The heat of this equipment can travel up to a great distance and provides even heating.

Tips to Select the Right Infrared Heater

• Power & Size Requirements:

The power of the heater is directly proportional to its ability to heat different objects. The power is measured in watts, and thus it is vital to choose the correct wattage to achieve the desired result of the heating efficiency. The low power can lead to uneven heating and just wastage of power, so evaluate the surface area that needs to be heated. It means a higher wattage of power will be needed.

• Heating Efficiency:

The infrared heater is known for its working efficiency, but the specifications and features of all the models are different. Go for the one that enhances the efficiency of operations and reduces the usage of power. Look for features like adjustable temperature settings, which allow fine-tuning to meet the specific needs of operations. They should also consist of features like thermal sensors and feedback loops that will prevent underheating and overheating.

Apart from that, the programmable control must be able to further control the process, allowing the heating process to be repeated, and allowing better efficiency.

• Safety Considerations:

The surrounding environment is also an important consideration when dealing with high-wattage heating elements. It is important to ensure that the heater has some safety features that reduce the chances of accidents.  A good quality infrared heater should have safety features like overheat protection, an emergency shut-off mechanism, among others. 

Wrapping Up…

Selecting the right infrared heater for different applications requires careful consideration. The above-mentioned tips will help you pick the right one for your operations.  Looking for a high-quality infrared heater? Shiva Products is a leading manufacturer of different kinds of industrial heaters, which are used to industrial standards. They also provide post-delivery services that ensure efficient output. So, say yes to efficient heating operations by choosing the best infrared heater manufacturers.

Working Principle of the Mica Band Heaters

These heaters are commonly used to heat the barrels, dies, nozzles, or molds, among others. The mica band heater consists of a resistance wire that is bound around the insulator. The mica is a versatile mineral known for its electrical properties, which make it an excellent electrical insulator with high thermal conductivity. When the electric current passes through the resistance wire, it leads to the creation of heat due to electrical resistance. The insulation qualities of the mica band heater help to direct the heat towards the surface that needs to be heated. The heat is then directed towards the plastic present in the object. It leads to the melting and shaping of the plastic as per the requirement.

Benefits of the Mica Band Heater in Plastic Industries

Efficient:

The mica band heater is known for its efficiency in converting electrical energy into heat. The high insulation qualities help to minimize the heat loss. It not only saves production energy but also operational costs.

Quick Output:

The heating equipment offers quick heating and cooling, which is essential for plastic products operations. It allows faster production. Say, for example, that you are switching between two plastic products, the band heater will ensure that it can quickly adjust the temperature as required, thus saving time. It also does not interfere with the efficiency of the operations.

Durable:

Mica is such a compound that can withstand high temperatures and mechanical stress. It makes the band heater highly durable, thus reducing the need for regular maintenance. This feature is beneficial in industries that are constantly operating without a break.

Uniform Heating:

The operations of the mica band heaters are highly efficient, providing uniform heating. It leads to the prevention of certain hot spots and cold spots. The consistency of the heat ensures that the plastic material has a consistent viscosity. It results in better-formed end products.

Uses of the Mica Band Heater

This heater is widely used in plastic manufacturing industries for molding and extrusion. They use heaters to heat the barrel and nozzle of the injection molding machine. The heated element is then transferred into the mold to give the plastic product a desired shape. The heater is also used to heat the barrel, which consists of plastic products. When melted, the plastic is forced into the die to create pipes, sheets, and profiles. Their precise heating leads to the precise creation of the extruded products.

Wrapping Up…

In the plastic processing industry, precision is of utmost importance. Consistency is essential, and that can be achieved with this versatile mica band heater. It leads to an efficient production process and less downtime.

If you are looking for a reliable mica band heater that can boost the plastic products, then Shiva Products is one of the most reliable manufacturers. They offer superior quality heating solutions to a wide range of industries. Their expert and highly experienced staff engineers create efficient and economical heating solutions, thus catering to a wide range of applications. 

What is a Heating Element?

Heating elements use electrical resistance to turn electricity into heat energy. When an electric current travels through the heating element, the resistive substance, such as nichrome, opposes the current, causing heat to be generated. This mechanism is referred to as the Joule heating effect.

The Joule heating effect happens when electrons pass through a resistive material and collide with the atoms or ions within it. These collisions cause the conversion of electrical energy into thermal energy, which generates heat. The more collisions occur, the more heat is produced.

The heat generated by the heating element is transported to the surrounding environment or the item being heated by conduction, convection, or radiation, depending on the heating system and application.

Heating components come in a variety of styles to suit different uses. Common kinds include;

• coil or wire-based elements
• ceramic elements
• tube elements. 

Each variety has distinct traits and benefits, making them appropriate for various applications.

What materials are utilized in heating elements?

The most widely utilized materials include nickel-chromium alloy, iron-chromium-aluminum alloy, molybdenum silicide, and silicon carbide, all of which are resistant to oxidation and suited for high-temperature applications. Graphite, molybdenum, tungsten, and tantalum belong to another group. These materials oxidize easily at high temperatures, hence they are normally employed exclusively in vacuum conditions or furnaces with an oxygen-free atmosphere.

Different Types of Heating Elements 

Air Process Heaters

As the name implies, this sort of heater is used to heat moving air. Air process heaters are generally heated tubes or pipes with one end for entering cold air and the other for releasing hot air. 

Cartridge Heaters

They are utilized in many industries such as food, plastic, packing, medicines, dies and molds, gas and liquid heating, shoe machines, and labeling. 

Tubular heaters

These are mostly used for industrial heating. They are used to heat liquids, solids, and gases using three methods: conduction, convection, and radiation. Tubular heaters are utilized for multifunctional heating applications. 

Space heaters

They are used within electrical and mechanical equipment enclosures to regulate temperature and reduce moisture. This is a compact and portable heating appliance. 

Conclusion

To summarize, heating elements work on the concepts of electrical resistance and the conversion of electrical energy into heat energy. Understanding these principles allows us to grasp the intriguing science underlying heating components. Heating units have become necessary in our daily lives, whether they are used to cook our favorite foods or to keep us warm on cold days.

When working with heating units, it is critical to prioritize safety. At Shiva Heaters, we design heating elements to withstand the heat they create, and we include insulation or protective measures to avoid direct contact with the hot element. These safety precautions safeguard users and avoid unintentional burns or electrical risks.

Check if the Ceramic Band Heater is Installed Properly 

Make sure that your band heater is of the correct size that fits the application. A loose fit can cause poor heating and a tight fit can damage your heater. So, install and align the heater properly on the heated surface to avoid such issues. 

Keep a Check on Your Heater Regularly

You should check the heater regularly for any signs of damage. Ceramic band heaters feature a heating element that may be damaged over time. A damaged element can cause heating issues and pose safety risks. 

Also, make sure to check the wiring of the heater. If you find any signs of wear and tear due to overheating or other reasons, change the wiring. Loose connections or faulty wiring can cause electrical hazards and slow down the performance of your band heater.

Look for any burn marks on the ceramic band as they are an indicator of overheating or short circuit.

Avoid Overheating 

Make sure the ceramic band heater is operating within its rated temperature. If the heater operates above its rated temperature, it causes overheating that can shorten its lifespan. 

You can use a thermocouple or temperature sensor to monitor the temperature of your band heater. This can also help avoid overheating and extend the life of your band heater.

Clean the Creamic band Heater Regularly

Over time, dust can accumulate on your heater and reduce its heating efficiency. So, you should clean the dust on the heater more often. You can do this using a cloth or a soft brush. Note: use water or cleaning solutions only if recommended by the heater manufacturer.

Store your Heater in a Safe Environment

Make sure to store your band heater in a dry, dust-free place if not in use. It helps prevent any moisture buildup on the heater or contamination that could affect its components. Ceramic band heaters can be easily damaged so handle them carefully to avoid any damage from physical impacts.

Use a High-Quality Temperature Controller

You can use a high-quality temperature controller that can regulate the temperature of the heating element. Any fluctuations in temperature can cause overheating or poor heating. Also, make sure to calibrate the temp. controller regularly.

Replace Damaged Parts 

Over time, ceramic band heaters may slow down. If you notice performance issues or if the heating element appears to be malfunctioning, replace it to prevent further damage.

If the insulation around the heater is damaged, replace it immediately to extend the life of the equipment.

Parting Words

By following these tips, you can extend the life of your ceramic band heater and ensure it operates efficiently and safely. Regular maintenance and attention to detail will help you avoid costly repairs and downtime.

The tube-shaped construction of cartridge heaters allows them to fit any type of heating element. To heat metal objects, these heaters are inserted straight into pre-drilled holes. Like other industrial heaters, these heaters can be produced in a range of watt densities to suit a range of needs. These heaters have the potential to be much smaller than their stated diameter. In this, we’ll discuss why a cartridge heater is a preferred choice.

Benefits of Cartridge Heater Over Other Heaters

• To begin with, these heater functions admirably in terms of heating. Its compact design allows it to create a large amount of warm electricity in a small space, quickly reaching the desired operational temperature, considerably shortening the manufacturing cycle and improving business manufacturing performance.
• Its unique temperature manipulation functionality is another significant feature. Many commercial methods require accurate temperature manipulation. The cylindrical heater can be combined with advanced temperature control mechanisms to achieve relatively accurate and stable temperature regulation, ensuring product consistency and reliability.
• The durability of cylindrical heaters makes them ideal for business applications. They are typically made of magnificent materials and can withstand difficult operating conditions such as extreme temperatures, high pressures, corrosion, and so on. They have a longer carrier life, which reduces the cost and manufacturing interruption caused by routine device substitution.
• Its features include ease of installation and protection. The cylindrical heater’s shape is really basic, the installation process isn’t usually hard, and it’s simple to use when protection or replacement is required minimizing the protection price and downtime of company equipment.
• In commercial manufacturing, space is typically a valuable resource. The cylindrical heater’s compact design allows it to easily adapt to various constrained installation places, providing additional freedom for the layout and format of business devices.
• In addition, the cylindrical Industrial Heaters can provide a homogeneous heating effect. This is vital for company strategies that demand uniform heating, such as positive chemical reactions, fabric handling, and so on, to improve product quality and manufacturing stability.
• The cylindrical heater allows for proper customization. Various factors, such as size, power, temperature range, and so on can be customized by exceptional business software goals to meet a variety of unique heating needs.

Final Words 

Cartridge heaters offer multiple benefits this is the reason that they are used in a wide variety of industrial applications. One of the top Indian manufacturers and suppliers of heaters is Shiva Products. We produce and supply high-quality, low-power heaters. Visit our website and get in touch with us to learn more about the range of our products.

Reasons for the Immersion Heater Failure

Shelf Life

Most electric immersion heaters have a limited shelf life. There is almost no certainty of how long typical heaters will survive. A variety of things can influence tenure. These include environmental circumstances, humidity, temperature changes, usage frequency, maintenance efficiency, and product quality.

Damage

There may be issues with the electric heater fan that are preventing your heat source from functioning properly. After opening the casing, thoroughly check the circuits for breakage in the electrical path.

Replacements

Rather than purchasing a new heater, it is sometimes a smart idea to replace specific sections of an existing one. If you discover that the resistors or circuits are producing problems, replace the components.  

Immersion Water Heater Repairs: Steps to Figure Out and Solve the Problem

Tripped circuit breakers

Consider your immersion heater to be a hard worker who is eager to heat your water before taking an unexpected rest. This break occurs frequently as a result of tripped circuit breakers. Check your electrical panel for any tripped breakers and reset them to restore power to your dependable heater. 

Issues with the heating element

Consider the heating element to be the central component of your immersion heater. It might become clogged with limescale or deteriorate with time, causing the entire system to suffer. Turn off the power, check the element for symptoms of corrosion or scale development, and give it the attention it deserves.

Faulty thermostats

Consider the thermostat the conductor of your immersion water heater symphony. If it goes out of tune, you will receive either scalding hot or lukewarm water. Adjust the thermostat settings carefully, and if there is no change in water temperature, it may be time to replace this musical maestro.

Sediment accumulation

Empty the tank or cylinder and look within for any indications of sediment accumulation. Flush the tank or cylinder with vinegar or a descaling solution to dissolve and remove the sediment if there is a lot of it. The anode rod- a metal rod inside the tank or cylinder that stops corrosion also needs to be replaced. It is possible for the heating element to corrode more quickly and fail earlier if the anode rod is absent or worn out.

Problems with the wiring

Immersion heater’s wiring is similar to the intricate network of roadways in a city. If there is a traffic delay or a detour, your heater will not operate properly. Inspect the wire for apparent flaws, fraying, or loose connections. If you notice any problems, consider contacting an electrician to reroute traffic.

Final Words

A heater is a helpful appliance that can heat water. But, it occasionally may not work properly for a variety of reasons, just like any other device. Some of the most frequent issues with immersion heaters can be resolved on your own or with professional assistance by using the above troubleshooting techniques. You can once again enjoy hot water by doing this and reactivate your immersion heater. To obtain additional details about heaters and related goods please visit the website of Shiva Heaters, a prominent producer and supplier of industrial heaters. 

How do heating elements work?

Heating components may be found in a range of things, including boilers, electric heaters, toasters, and showers. These instruments use the Joule heating, often known as resistive, a technique to transform electrical energy into heat. The element experiences resistance when the electric current flows through it and generates the necessary heat.

There are several types of heating elements such as metal, ceramic, semiconductor, liquid, PTC, and thick film heaters. Metal, composite, and PTC are used as industrial heating elements.

One benefit of heating components is that they offer a variety of heating choices. Many manufacturers offer heating elements for conduction, space, radiant, liquid, and convection heating. 

Choose the Right Heating Element

The diversity of heating components available might make it difficult to select the best equipment for your business. Conduction heating components are among the most prevalent. If you have a cartridge, strip, drum/IBC, nozzle, band, ring, mica plate, or Kapton film heater, this is the part you require. In recent years, radiant heating has grown in popularity, with ceramic and quartz components becoming popular alternatives for a variety of enterprises.

Convection heating is another prominent option, which may be found in finned strips and semiconductor heaters. Infrared space heaters are perfect for heating both indoor and outdoor areas, such as a beer garden at a tavern. We also stock a few liquid heating devices, such as immersion.

How long should a heating element last?

The heating element’s lifespan will be determined by its material and the conditions in which it is used. However, most heating components will last at least five years. Most heating components, with proper care, may last between 8 and 15 years.

Do heating elements lose power and fail with time?

Many mechanical and electrical equipment may lose power and fail over time because of wear and tear. The elements’ resistance might grow with age and result in a loss of power and heat. This will cause the element to fail. You should replace the heating components to increase their lifespan.

What are the different kinds of heating elements?

There are several types of heating components. The five are metal, ceramic, and semiconductor, thick film, polymer PTC, and liquid. Some others are toasters, furnaces, and underfloor heating all use metallic heating components.

How do I know which industrial heating solution is best for my business?

The amount of various heating elements available makes it difficult to choose which industrial heater is best for your business. You’ll need to consider things like maintenance needs, kind, and budget. Electric and radiant heaters are popular among industrial enterprises because they provide efficient warmth.