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What You Need to Know About an Electric Heater Electric heaters can provide warm air quickly when needed. They are usually rated for a specific size room and include features like thermostats, overheat switches, and timers. An electric heater converts electrical energy into heat through heating in joules. The heating element is made of ceramic insulators and nichrome wire. Resistor The resistor is an electrical element that blocks the flow of electricity in a circuit by cutting down its voltage and absorption of some of it as heat. It does this by converting electrical energy into thermal energy, and wasting only a fraction of a Watt. This is a typical method used in electric light bulbs as well as heating elements. The resistance in the resistor is determined by its thickness, material and other characteristics. The higher the resistance of the resistor, the greater energy will be lost. This is due to higher currents leading to more electrons in the resistor and more electrons lead to more collisions between them. The more collisions that occur, the higher the temperature. Resistors have a maximum power level they can safely dissipate. This is usually between 1/8W (0.125W), and 1W. Resistors that have a high power rating can be identified by their larger packaging. The power rating of a particular resistor can be deduced from the packaging it is packaged in or by comparing its physical size to other resistors that have a known power rating. Electric heaters are a specific kind of power resistor that is designed to convert electricity into heat. They produce convective heat by circulating air over the resistor or radiant heat by emitting infrared radiation. They are typically used in conjunction with fans to boost the heating efficiency. If a resistor's maximum power rating exceeds the power rating the resistor will begin to become hot and may damage nearby components. In extreme instances the resistor can get to a point at which it self-ignites and causes the fire to spread. To avoid this from happening, a limiting resistor is recommended to be placed in the circuit. The heater resistors are identified with an identifier color that indicates its value as well as other information, like manufacturing accuracy and temperature coefficient. A six-banded resistor, for example, will have five bands that represent its digits, and the sixth band will provide the multiplier and tolerance. If you're looking to determine the value of your resistor, there are a variety of online calculators that can be used. Coil Electric heating coils are at the heart of any electrically powered device which makes use of heat to heat liquids or objects. They use a process known as conduction to convert electricity into heat. They can be shaped in a variety shapes depending on their application. Electric heating coils can also generate a lot of heat in a short period of time, which makes them ideal for applications requiring fast temperature changes or high thermal efficiency. The heart of an electrical heating coil is an intricately twisted arrangement of metal wires. This tightly packed structure allows the most wires to be contained in a small space, improving conductivity. The coil is then insulated using various different materials, depending on the requirements of the specific application. Insulation for an electric heater that is used for liquid immersion can be made of a non-flammable polyvinylchloride (PVC), polyester or polyimide. A coil used in cryogenics would typically be insulated using molybdenum diilicide. These materials are not just resistant to oxidation and corrosion and oxidation, but also offer 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. Metals in a heating element are exposed to high temperatures and harsh environments. They need to be protected. These protections include sealants and coatings, improved drainage and ventilation, regular maintenance and inspections. Moisture intrusion is another problem that must be taken care of. It can cause damage to heater's internal components, and shorten its lifespan. Coils can also be utilized in other devices, such as ovens, water tanks, and furnaces. They can be formed in a variety of shapes to suit the needs of the application and are usually printed on substrates like aluminum 6061-T6, muscovite or Phlogopite mica sheets, or conductive plastic. They can be coated with a variety of materials to improve their appearance and performance, including silver, gold and nickel. Thermostat You probably don't give it much thought, but your thermostat is an important element of your home's comfort system. The thermostat's main function is to turn the heater on and off so that it is able to maintain the temperature you prefer. It can also adjust the temperature based on your daily routine, which is a big advantage for those with an unpredictable schedule. The majority of thermostats are digital electronic models that can be programmed using a computer interface or smartphone app. Some models have a learning feature that adapts to your lifestyle. You'll never have to wonder when you should be home to eat dinner. In the old thermostats that weren't digital, the electrical circuit would be controlled by a bimetal coil or metal band, which would expand or shrink based on the temperature. As the strip expanded or contracted, it triggered an aluminescent switch to tip, which then activated the relay that started the heating system. Then, as the strip cooled, it bent back and snapped away from its original position, which shut off the heating. Modern electronic thermostats are more precise than electromechanical ones, utilizing an electronic temperature sensor and a small relay. It's still simple to understand the workings of an electromechanical thermostat through examining its components. One of the most important components is a thermometer, which has a piece of mercury in it. When you turn the lever on the thermostat upwards or down, it rotates the coil and tips the mercury switch one way or the other. If the mercury switch is tipped to the left, it will activate the relay and turn on the heater. As the room warms the mercury turns to the right and interrupts the circuit. The heater then turns off. As the room cools down, the mercury returns back to its initial position. The heater then switches on. If you continue to change the temperature on your electric thermostat, it could have to work overtime to keep up with your evolving preferences, which causes it to use more energy than it has to. Timer A wall heater timer lets you to schedule your lighting and heating. It comes with a built-in clock that automatically turns on and off your heaters or lights according to the time you set. You can also save money on your energy bills by avoiding excessive use. They are mostly utilized in homes however they are also found in industrial and commercial establishments. They offer energy efficiency, convenience, and security by regulating the time that electric circuits are turned off and on. They can be used to control appliances such as lights, water pumps, and ovens. They are a great choice for those who need to control electrical appliances without a computer or complex programming. You can set a timer by connecting it to an outlet or extension cord. Connect the appliance you want to control. Based on the model, you can also connect several devices simultaneously. Certain models have a socket in the center of the timer. While others have a socket on the side or beneath it. There are electric fires stoves of plug-in timer switches, including ones which can be controlled using a smartphone or tablet. The majority of mechanical timers have an hour and half-hour marks. They also have little teeth that you can pull outwards to set the “ON” time, and then push backwards to set the “OFF” time. There are also models with multiple sets that allow you to alter the on and off times for different days of the week. Keep in mind that mechanical timers can not always work correctly especially if their internal clock is a little off. Check the wiring and make sure that all pins are connected to the timer. If you still can't get it to function, it's best to contact a professional for help. Alternately, you can replace the timer with a fresh one. You should also keep the timer safe away from pets and children.