Heating elements
Resistance Wire Heating Element
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Coiled wire that heats when current passes
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Used in toasters, heaters, ovens
2️⃣ Tubular Heating Element
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Wire inside a metal tube filled with insulating powder
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Used in water heaters, boilers
3️⃣ Ceramic Heating Element
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Wire embedded in ceramic
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Used in room heaters, hair dryers
4️⃣ Infrared Heating Element
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Produces infrared radiation heat
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Used in industrial drying, grills
Devices Using Heating Elements
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Electric iron
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Electric kettle
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Water heater
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Electric stove
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Hair dryer
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Furnace
Other Details:
Features:
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A typical heating element (like in an electric heater or iron) has these parts:
1️⃣ Resistance wire (Nichrome)
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Main heating part
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High electrical resistance
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Can withstand high temperatures
2️⃣ Insulating material
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Usually ceramic, mica, or magnesium oxide powder
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Prevents electric leakage while allowing heat transfer
3️⃣ Metal sheath (outer tube)
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Protects the heating coil
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Made of stainless steel or copper
4️⃣ Terminals
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Points where electrical supply is connected
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Heating elements are of various types:
- •Tubular heater
- •Catridge heaters
- •Ceramic band heaters
- •Finned heaters
- •Duct heaters
- •Immersion heaters
Applications:
- •heating
- •Drying
- •Sealing
- •Curing