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Pressure washing or power washing is the use of high-pressure water spray to remove loose paint, mold, grime, dust, mud, and dirt from surfaces and objects such as buildings, vehicles and concrete surfaces. The volume of a mechanical pressure washer is expressed in gallons or liters per minute, [1] often
Air and dust are sucked at high speed into the collection vessel at a direction tangential to the vessel wall, creating a fast-spinning vortex. Roughly speaking, the dust particles and other debris spiral outward to the wall of the vessel by centrifugal force , where they fall due to gravity into the bottom of the collection bin.
A dust spray can often be used as a freeze spray. Many gas dusters contain HFC-134a (tetrafluoroethane), which is widely used as a propellant and refrigerant. HFC-134a sold for those purposes is often sold at a higher price, which has led to the practice of using gas dusters as a less expensive source of HFCs for those purposes.
Four views of a typical suction excavator. A suction excavator, or vacuum excavator, is a construction vehicle that removes heavy debris or other materials from a hole on land using vacuuming.
A high concentration of dust is in the inlet stream; The dust is sticky or has a tendency to plug openings; The gaseous contaminant is very soluble or chemically reactive with the liquid; To maximize the absorption of gases, venturis are designed to operate at a different set of conditions from those used to collect particles.
Wikipedia articles on energy and the environment and other many other subjects rely on data from US government web sites, which are generally regarded as authoritative. There is a significant likelihood that many or all of these sites will be taken offline after January 20, 2025 when the US administration changes over.