The Library of Congress > Linked Data Service > LC Subject Headings (LCSH)

Automobiles--Windows and windshields--Defrosters

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  • Components

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    • found: Work cat: Cole, J. The effects of outlet geometry on automotive demister performance, 2000:abstr. (The established method of clearing a misted car windshield or of maintaining a clear view under misting conditions is through the application of an air supply via jet outlets in the instrument panel. The ability of such arrangements to perform adequately is a function of the prevailing environmental conditions, the vehicle speed, the condition of the demist air source and the geometry and arrangement of the jet outlets)
    • found: How the defroster works -- YourMechanic advice, via WWW, Jan. 5, 2020(by Tim Charlet on November 20, 2015. ... The car defroster is a component that is commonly used. Front defrosters usually use air current, while rear defrosters are electric. In simple terms, the front defroster works by circulation of air, while the rear defroster is electrically charged. The front defroster has vents on the dashboard that face the windshield and front windows. The fan and blower motor that operate the heating and air conditioning will also circulate air through these vents to defrost the windows. ... The rear defroster is electric for most vehicles. The rear window will have thin lines running across the window. These lines are electrical fibers embedded in the glass that heat up as they are activated)
    • found: Lifewire ... How do car defrosters work?, via WWW, Jan. 5, 2020(by Jeremy Laukkonen, updated July 02, 2019 ... Regardless of the specific name you use---defroster, defogger, demister, or anything else---there are really only two different devices that you can activate by pushing one of those little squiggly-lined buttons. The first type uses your vehicle's heating, ventilation and air conditioning (HVAC) system to blow air (typically both dehumidified and warm) at foggy or iced-over glass, and the other defogs and de-ices via the mechanism of resistive heating. ... Defrosters that don't use a car's HVAC system are sometimes referred to as "secondary" systems since they are designed to defrost things like rear windshields and mirrors. These systems typically use wire grids and resistive heating to physically warm up the surface of the glass, which can effectively melt ice and remove condensation)
    • found: How does a car defroster work? -- It still runs, via WWW, Jan. 5, 2020( ... On the majority of production vehicles that exist today, the front defroster will consist of vents. It utilizes the same blower motor and fan that the heating and air conditioning systems use. The vents are placed directly below the windshield, facing up toward the roof of the car. When the vehicle's coolant reaches temperature and the thermostat opens, it allows the hot water to cycle through the heater core. The blower fan then directs this hot air up through the defroster vents (selected on the heater/AC panel) and warms up the temperature of the windows, removing any condensation that may have built up. ... The rear window on most automobiles has tiny lines going through it. These are actually electrical wires, which heat up when current flows through them. In this manner, the resulting heat is used to displace the condensation on the inside of the window, but can also work on the outside. The heating elements have very low heat ... They put out just enough heat to combat the moisture built up on the window. They are usually wired along the roofline of the car, underneath the headliner)
  • LC Classification

    • TL271.9
  • Change Notes

    • 2020-02-09: new
    • 2020-05-13: revised
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