ECE5320 Mechatronics Assignment#01: Literature Survey on Sensors and Actuators Topic: Electric Heating ElementsOutlineReference listTo explore further (survival pointers of web references etc)Major applicationsMajor applications cont.Major Applications Cont.Basic working principle (Ref 4)Typical sample configurationTypical configuration cont.Kinds of basic heating elements (Ref 1)Kinds of basic heating elements cont.Major SpecificationsTypes of Heating Elements (Ref 6)Types of Heating Elements cont.LimitationsHow to chooseCost InformationWhere to buyWhere to buy cont.ECE5320 MechatronicsAssignment#01: Literature Survey on Sensors and Actuators Assignment#01: Literature Survey on Sensors and Actuators Topic: Electric Heating ElementsPrepared by:Kaleb NelsonDept. of Electrical and Computer Engineering Utah State UniversityE: [email protected] ; T: (435)760-7749; F: (435)797-3054 (ECE Dept.)3/6/200901/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-2Outline –Reference list–To probe further–Major applications–Basic working principle illustrated–A typical sample configuration in application–Major specifications–Limitations–And many more relevant issues in applications (such as, how to choose, cost information, where to buy etc.)01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-3Reference list•http://en.wikipedia.org/wiki/Heating_element (1)•http://www.thomasnet.com/products/heating-elements-37950805-1.html (2)•http://www.watlow.com/products/heaters/index.cfm (3)•http://en.wikipedia.org/wiki/Joule_heating (4)•http://en.wikipedia.org/wiki/Trace_heating (5)•http://www.wattco.com/products.html (6)01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-4To explore further (survival pointers of web references etc) •http://www.thefreedictionary.com/heating+element •http://en.wikipedia.org/wiki/Heating_element01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-5Major applications •Electric range•Space heater•Electric oven•Duct heatersMajor applications cont. •Hair dryers/straighteners •Electric blanket•Toaster oven•Other food industry applications01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-6Major Applications Cont.•Under floor heating•Snow/ice prevention/melting•Frost protection•Frost protection•Anti-condensation01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-7Basic working principle (Ref 4) 01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-8•The main idea behind electric heaters is that when you run a current through a conducting material, it releases heat.•This is sometimes referred to as “Joule heating”•This is also sometimes referred to as ohmic or resistive heatingTypical sample configuration•A heating element can often just be represented by a resistor in a circuit.•This resistor is connected to a power supply at a constant voltage01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-9Typical configuration cont.•A typical application circuit is as shown.01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-10Kinds of basic heating elements (Ref 1) •“Bare Nichrome wire or ribbon”•“Screen-printed metal–ceramic tracks deposited on ceramic insulated metal (generally steel) plates”•“Tubular (sealed element): a fine coil of Nichrome wire in a ceramic binder, sealed inside a tough metal shell”01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-11Kinds of basic heating elements cont.•“Heat lamp: a high-powered incandescent lamp usually run at less than maximum power to radiate mostly infrared instead of visible light.”•“PTC ceramic: This material is named for its Positive Thermal Coefficient of resistance.”–“Becomes extremely resistant above a composition-dependent threshold temperature”–“Acts as its own thermostat”01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-12Major Specifications•Supply voltage•Operating temperature•Heating element watt density01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-13Types of Heating Elements (Ref 6) •Tubular•Finned tubular•Flange•Boiler•Screwplug•Circulation•Over The Side Immersion•Strip01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-14Types of Heating Elements cont.•Finned strip•Cartridge•Band•Silicone rubber•Open coil•Duct•Infrared radiant01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-15Limitations•Since there are so many types of electric heating elements, there are very few limitations that apply to all types.01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-16How to choose•PTC Ceramics are good for applications where you don’t want to get too hot.•High temperature furnaces use materials such as platinum, molybdenum disilicide, and silicon carbide (1)01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-17Cost Information•The cost information is very variable.•This is due to the huge variation in product types. Obviously, small tubular heaters are going to be cheaper than heating elements for high temperature ovens. 01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-18Where to buy•There are countless numbers of places to buy heating elements.•www.Thomasnet.com (product/service) searching under “electric heating elements” comes up with many different suppliers including:– Wattco.com–Hi-Temp Products Corp.–Accu Therm, Inc.–And many more.01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-19Where to buy cont.•If you are looking for a product that uses a heating element, you can find countless numbers of the previously mentioned applications at almost any store.01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and
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