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What You Need to Know About an Electric Heater Electric heaters can provide warm air quickly when required. They are usually rated for a specific room size and come with features like thermostats, overheat switch, and timers. Electric heaters convert electrical energy into heating in joules. The heating element is comprised of nichrome wire and ceramic insulators. Resistor The resistor is a part that reduces voltage and absorbs some of it in the form of heat. It converts electrical energy into thermal energy, wasting only a fraction of a watt. This is a standard process that is found in electric light bulbs as well as heating elements. The thickness, material and other properties of the resistor determine its resistance. It is crucial to remember that the higher the resistor's resistance, the more energy it can dissipate. fireplacesandstove is due to higher currents leading to more electrons within the resistor, and more electrons mean more collisions between them. The more collisions occur, the higher the temperature. Resistors have a maximum power rating they are able to safely eliminate. This usually ranges between 1/8W (0.125W), and 1W. Resistors with a high power rating can be distinguished by their larger packaging. You can determine the maximum power rating by looking at the packaging or by comparing it to other resistors with known power ratings. Electric heaters are specialized types of power resistors that are designed to convert electrical energy into warmth. They can generate convective heat or radiant heat by emitting infrared rays. They are often employed in conjunction with fans to improve the efficiency of heating. If a resistor's maximum power rating exceeds the power rating the resistor will heat up and can damage adjacent components. In extreme situations, the resistor may reach a point where it self-ignites causing an explosion. To avoid this from happening, a limiting resistor is required to be incorporated into the circuit. Heater resistors have a color code that indicates their value as well as other information like a manufacturing accuracy and temperature coefficient. A six-banded resistance, for instance, has five bands to indicate its digits and the sixth band will tell you the multiplier and tolerance. There are numerous online calculators that you could use to calculate the value for your own resistor. Coil Electric heating coils form the central component of any device powered by electricity that makes use of heat to warm objects or liquids. They use a process known as conduction to convert electricity into heat. They can be made in a variety of forms based on the purpose for which they are used. Electric heating coils are also capable of generating a significant amount of heat in a short amount of time which makes them ideal for applications that require quick temperature changes or high levels of thermal efficiency. The heart of an electrical heating coil is a tightly twisted structure of wires made of metal. This structure is tightly packed, allowing for the maximum number wires to be contained in a small area, improving conductivity. The coil can be protected in a variety ways, based on the use. For instance the insulation of an electric heater used for liquid immersion can be made of a non-flammable material such as polyvinyl chloride (PVC) or polyester or polyimide, while a coil used for cryogenic applications is usually insulated with molybdenum disilicide. In addition to protecting against the elements, these materials also offer resistance to oxidation and corrosion which makes them suitable for a wide range of industrial applications. Stainless steel is the most common element for a heater coil, but nickel-chrome and iron-chromium-aluminum alloys are also commonly used. These alloys are a great combination of cost, corrosion resistance and resistance to oxidation. Metals in a heating element are exposed to extreme temperatures and corrosive environments. They need to be protected. This includes coatings, sealants, better drainage and ventilation, and regular maintenance and inspections. Moisture ingress is a different issue that needs to be addressed, as it can damage the internal components of a heater, and reduce its lifespan. Coils are also used in other devices such as ovens and furnaces, as well as water tanks. They can be made into a variety of shapes to suit the needs of the application, and they are often printed on substrates like aluminum 6061-T6, muscovite or Phlogopite mica sheets, or conductive plastic. They can be coated in various materials, including nickel, silver and gold to enhance their appearance. Thermostat While you probably don't think about it often your thermostat is a very important component of your home's comfort system. The primary function of a thermostat is to turn the heater ON and off so that it maintains your preferred temperature setting. It also has the ability to adjust the temperature based on your routine which is a major advantage for those with unpredictable schedules. The most popular type of thermostat is the electronic digital type that you can program using an app on your smartphone or computer interface. The latest models also come with a learning feature that automatically adapts to your unique lifestyle, so you'll never have to worry about when you should be at home for dinner. In the older thermostats that weren't digital the electrical circuit would be controlled by a bimetal coil or metal band that would expand or shrink based on the temperature. As the strip expanded and contracted it was tipped by a mercury switch into action, activating the relay that switched on the heating. As the strip cooled, it bent back and snapped out of its initial position, which shut off the heating. Modern electric thermostats are more precise than electromechanical ones, utilizing the use of a temperature sensor and a tiny relay. However, it's still possible to understand the workings of an electromechanical thermostat by looking at its components. A thermometer coil with mercury in it is among the most important components. When you move the thermostat lever upwards or downwards the coil spins and tilts the mercury switch in one direction or the other. If the mercury switch is tilted to the left, it will activate the relay and activate the heater. As the room warms, the mercury switches to the right, which breaks the circuit. The heater then turns off. When the room cools, the mercury reverts to its initial position and the heater comes back on. If you are constantly changing the temperature of your electric thermostat, it may have to work overtime to keep up with the changes. This can cause it to consume more energy than it needs to. Timer A wall heater timer is an efficient device that helps you schedule your lighting and heating. It is equipped with a built-in clock that will automatically turn on and off your heaters or lights at the time you set. It also helps you save money on your energy bills by avoiding unnecessary use. They are typically used in the home however they can also be found at industrial and commercial facilities. By controlling the time when circuits are turned on and off, they offer convenience, energy efficiency and security. They can be used to control appliances like water pumps, lights and ovens. They are a great choice for people who want to control their electrical appliances without the need for a complicated programming system or computer. You can set a timer switch by simply plugging it into an outlet or extension cord. Connect the appliance you wish to control. Based on the model, you can also plug in several devices at once. Certain models have a socket at the center of the timer, while others have an outlet on the side or below it. You can select from various plug-in switches for instance, those that can be controlled with a smartphone or tablet. Most mechanical timers have a dial with hour and half-hour marks. You can also utilize the teeth to set an “ON” and “OFF” time. There are models that have multiple sets. This allows you to set the time for various days. It's important to remember that mechanical timers don't always work properly, especially when the internal clock becomes slightly off. Verify the wiring and ensure that all pins are properly connected to the timer. If you're still having trouble getting it to function, it's best to consult a professional for assistance. Alternately, you can replace the timer with a fresh one. It is also recommended to keep the timer in a safe place away from children and pets.