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What You Need to Know About an Electric Heater Electric heaters are an excellent way to provide a quick burst of warmth whenever you need it. They are typically rated according to the size of the room and include features like thermostats, overheat switches, and timers. Electric heaters convert electrical energy into heating in joules. The heating element is comprised of the nichrome wire as well as ceramic insulators. Resistor The resistor is a component of the electrical circuit that blocks the flow of electricity in a circuit by cutting down its voltage and absorption of some of it as heat. It works by converting electrical energy into thermal energy, using just a fraction of Watt. This process is found in a variety of electric light bulbs as well as heating elements. The resistance in the resistor is determined by its thickness, material and other properties. It is important to keep in mind that the greater the resistor's resistance, the more power it will dissipate. This is because higher resistances result in more electrons, and more collisions. The higher the temperature, the more collisions occur. In general, resistors have a maximum power rating that they can safely dissipate, which is typically between 1/8W (0.125W) and 1W. Resistors with a high power rating can be recognized by their larger packaging. You can determine the power rating by looking at the packaging or by comparing it to other resistors of known power ratings. Electric heaters are special kinds of power resistors designed to convert electrical energy into warmth. white log burner electric www.fireplacesandstove.com produce convective heat by circulating air over the resistor, or radiant heat by emitting infrared radiation. They are typically used with fans to improve the efficiency of heating. If the power rating of a resistor exceeds the power rating, the resistor will become hot and may damage nearby components. In extreme situations it could even reach a point of self-ignition and result in a fire. To prevent this from happening, a limiting resistance should be installed in the circuit. Heater resistors come with a color code which indicates their value and other data like manufacturing accuracy and temperature coefficient. For instance, a 6-banded resistor will have five bands that will tell you its digits, and the sixth band will tell you its multiplier and tolerance. There are numerous online calculators that you could use to calculate the value of your own resistor. Coil Electric heating coils form the core of any electrically powered appliance that makes use of heat to warm objects or liquids. They use the process of conduction to convert electricity into heat. They can be designed in a variety shapes depending on their purpose. Heating coils made of electric are capable of producing a large amount of heat in a short period of time and are therefore suitable for applications that require quick temperature changes or high levels of thermal efficiency. The core of an electric heating coil is an intricately twisted arrangement composed of wires made from metal. This tightly packed structure allows for the maximum number wires to be able to fit in a small area, improving conductivity. The coil is then insulated using a variety of different materials, depending on the needs of the particular application. For instance, the insulation of an electric heater used in liquid immersion can be made of non-flammable materials like polyvinyl chloride (PVC), polyester, or polyimide, while a coil used for cryogenic applications is usually coated with molybdenum disilicide. These materials are not just resistant to corrosion and oxidation, but also provide protection from the elements. This makes them ideal for a 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 have a great balance of cost, oxidation resistance and corrosion resistance. Since the metals used in the heating coil are exposed to high temperatures and corrosive environments, they need to be protected from damage. These protections include coatings, sealants, improved drainage and ventilation, and regular inspections and maintenance. Moisture ingress is a different issue that needs to be addressed because it can cause damage to the internal components of a heater, and decrease its life expectancy. Coils can also be used in other devices, including water tanks, ovens and furnaces. They can be made into various shapes to suit the needs of the application and are usually printed on substrates such as aluminum 6061-T6, muscovite, Phlogopite mica sheets, or conductive plastic. They can be coated with a range of materials to enhance their appearance and performance, such as silver, gold and nickel. Thermostat You probably don't think about it, but your thermostat is a crucial component of your home's comfort system. The thermostat's main function is to turn the heater ON and off so that it can maintain the temperature you prefer. It can also adjust the temperature according to your daily routine which is a major advantage for those with an unpredictable schedule. The majority of thermostats are digital electronic models that can be programmed via a computer interface or an app for your smartphone. The latest models also come with a learning feature that automatically adapts to your specific lifestyle, so you'll never have to worry about when you should be at home for dinner. In older non-digital thermostats, the electrical circuit was controlled by a bi-metal conductive coil or metal strip that would expand or contract depending on the temperature. When the strip expanded or contracted, it activated a mercury switch to tip, which then activated the relay, which turned on the heating system. As the strip cooled down it swung backwards, and snapped out from its initial position. This turned off the heating. Modern electronic thermostats have replaced electromechanical ones with a more precise technology that utilizes a temperature sensor and small relays to perform the same job. It's still simple to understand the mechanics of an electromechanical thermostat through examining its components. One of the main components is a thermometer coil, which has a piece of mercury inside it. When you turn the thermostat lever upwards or downwards the coil turns and tilts the mercury switch in one direction or the other. If the mercury switch tips to the left, current is flowing through it and turns on the relay, which turns on the heater. But as the room gets hotter, the mercury shifts to the right and interrupts the circuit so that the heater turns off. As the room cools the mercury reverts to its initial position. The heater then switches on. If you continue to change the temperature of your electric thermostat, it may require overtime to keep up with your changing preferences, which causes it to consume more energy than it needs to. Timer A wall heater timer permits you to set the timing of your heating and lighting. It is equipped with a built-in clock that will automatically turn on and off your lighting or heaters at the time you specify. You can also save money on your monthly energy bill by avoiding excessive use. They are typically used in the home, but can also be found at industrial and commercial facilities. By controlling the timing of when circuits are turned off and off, they provide convenience, energy efficiency, and security. They can be used to control appliances such as lights, water pumps, and ovens. They are a great option for those who want to control electrical appliances without a computer or complicated programming. Plugging a timer switch into an extension cord or outlet will allow you to set it. Then, plug in the appliance you wish to control. Based on the model, you can also plug in several devices at once. Some models have a plug at the center of the timer, while others have sockets on the sides or below it. There are a variety of plug-in switches, including ones that can be controlled by tablets or smartphones. Most mechanical timers come with 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 lets you set the time for different days. It's important to note that mechanical timers may not work as expected, particularly when the internal clock becomes a little off. Check the wiring and ensure that all pins are properly pressed into the timer. If you still can't get it to work, it's best to contact a professional for help. You may also try replacing the timer. It's also a good idea to keep the timer in a safe place, where it won't be easily disturbed by pets or children.