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A second type of heat sink fin arrangement is the straight fin. A variation on the straight fin heat sink is a cross-cut heat sink. A third type of heat sink is the flared fin heat sink, where the fins are not parallel to one another. Flaring the fins decreases flow resistance and makes more air go through the heat-sink fin channel; otherwise ...
This is the ratio of the fin heat transfer rate to the heat transfer rate of the fin if the entire fin were at the base temperature, = ˙. in this equation is equal to the surface area of the fin. The fin efficiency will always be less than one, as assuming the temperature throughout the fin is at the base temperature would increase the heat ...
The fin material should preferably have high thermal conductivity. In most applications the fin is surrounded by a fluid in motion, [ 1 ] which heats or cools it quickly due to the large surface area, and subsequently the heat gets transferred to or from the body quickly due to the high thermal conductivity of the fin.
The reaction is exothermic, releasing heat to soften the fats. Drain cleaners can also contain aluminum, which reacts with sodium hydroxide to produce bubbles of hydrogen gas that help to break up the clog. [11] The pressure buildup by gas generation can cause weaker pipes to burst, [11] and the heat generation can also soften plastic PVC pipes.
The Ajax brand was extended to a line of household cleaning products and detergents, which enjoyed its greatest success in the 1960s and beginning of the 1970s. Ajax All Purpose Cleaner with Ammonia, introduced in 1962, was the first major competitor to Procter and Gamble's Mr. Clean (debuted 1958). Ajax's success as the so called "White ...
A drain cleaner, also known as drain opener, refers to a person, device, or product used to unblock sewer pipes or clear clogged wastewater drains.This term typically applies to chemical, enzymatic, or mechanical tools such as commercial chemical cleaners, plumber’s snakes, drain augers, bio-enzyme solutions, or toilet plungers.
It is a freshwater fish that inhabits rivers and creeks, sometimes entering pools and riffles, and found from headwaters to areas near tidal influence. It eats insects, especially flies and mayflies. Spawning occurs in spring and summer, with individuals spawning several times over a season. The eggs are laid in cracks and crevices, under rocks ...
Finish detergent tablet. Finish is the brand name of a range of dishwasher detergent and cleaning products sold by the consumer products manufacturer Reckitt.The tablets, based on the original product, contain surfactants which counteract water hardness and break down foods containing starches and proteins, and remove bleachable stains and produce enzymes and foams.