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Video of a Venturi meter used in a lab experiment Idealized flow in a Venturi tube. The Venturi effect is the reduction in fluid pressure that results when a moving fluid speeds up as it flows from one section of a pipe to a smaller section. The Venturi effect is named after its discoverer, the 18th-century Italian physicist Giovanni Battista ...
For air with a heat capacity ratio =, then =; other gases have in the range 1.09 (e.g. butane) to 1.67 (monatomic gases), so the critical pressure ratio varies in the range < / <, which means that, depending on the gas, choked flow usually occurs when the downstream static pressure drops to below 0.487 to 0.587 times the absolute pressure in ...
Pressure drop (Δp) Liquid-to-gas ratio (L/G) Liquid-inlet pressure (p L) Removal efficiency: Applications: Gases: 1.3–13 cm of water 7-13 L/m 3: 100-830 kPa 95% for very soluble gases Pulp and paper industry Chemical process industry Food industry Metals processing industry Particles: 0.5-5 in of water 50-100 gal/1,000 ft 3: 15-120 psig 1 ...
Pressure drop (Δp) Liquid-to-gas ratio (L/G) Liquid-inlet pressure (p L) Removal efficiency: Applications: Gases: 4–25 cm of water (1.5-10 in of water) 0.3-1.3 L/m 3 (2-10 gal/1,000 ft 3) 280–2,800 kPa (40-400 psig) Only effective for very soluble gases Mining operations Drying operations Food processing Foundries Particulates: 2-3 μm ...
A simplified version of the definition is: The k v factor of a valve indicates "The water flow in m 3 /h, at a pressure drop across the valve of 1 kgf/cm 2 when the valve is completely open. The complete definition also says that the flow medium must have a density of 1000 kg/m 3 and a kinematic viscosity of 10 −6 m 2 /s , e.g. water.
Darcy–Weisbach equation calculator; Pipe pressure drop calculator Archived 2019-07-13 at the Wayback Machine for single phase flows. Pipe pressure drop calculator for two phase flows. Archived 2019-07-13 at the Wayback Machine; Open source pipe pressure drop calculator. Web application with pressure drop calculations for pipes and ducts
A high pressure drop corresponds with a higher resistance to airflow. Pressure drop is calculated by determining the difference in total pressure at two points, typically the inlet and outlet. Filter drag is the resistance across the fabric-dust layer. The air-to-cloth ratio (ft/min or cm/s) is defined as the amount of gas entering the baghouse ...
The Kozeny–Carman equation (or Carman–Kozeny equation or Kozeny equation) is a relation used in the field of fluid dynamics to calculate the pressure drop of a fluid flowing through a packed bed of solids. It is named after Josef Kozeny and Philip C. Carman.
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