back pressure

back pressure
pressure in direct opposition to the normal flow

English contemporary dictionary. 2014.

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  • Back pressure — usually refers to the pressure exerted on a moving fluid by obstructions or tight bends in the confinement vessel along which it is moving, such as piping or air vents, against its direction of flow. For example, an automotive exhaust muffler… …   Wikipedia

  • Back pressure — Back Back, a. 1. Being at the back or in the rear; distant; remote; as, the back door; back settlements. [1913 Webster] 2. Being in arrear; overdue; as, back rent. [1913 Webster] 3. Moving or operating backward; as, back action. [1913 Webster]… …   The Collaborative International Dictionary of English

  • Back pressure — Pressure Pres sure (?; 138), n. [OF., fr. L. pressura, fr. premere. See 4th {Press}.] 1. The act of pressing, or the condition of being pressed; compression; a squeezing; a crushing; as, a pressure of the hand. [1913 Webster] 2. A contrasting… …   The Collaborative International Dictionary of English

  • back pressure — [1] The resistance to the flow of exhaust gases through the exhaust system. By rerouting the exhaust gases for noise suppression, a muffler causes back pressure, but a straight pipe alone causes only minimal back pressure. Some engines require… …   Dictionary of automotive terms

  • back pressure — noun 1. : residual pressure on the exhaust side of a steam engine piston against which the steam on the intake side must work 2. : opposition to flow of a liquid or gas due to friction, inertia, gravity, or other cause * * * back pressure noun… …   Useful english dictionary

  • back pressure — atgalinis slėgis statusas T sritis fizika atitikmenys: angl. back pressure; backpressure; return pressure vok. Gegendruck, m; Rückdruck, m rus. обратное давление, n pranc. contre pression, f; pression de retour, f …   Fizikos terminų žodynas

  • back pressure-arm lift method — n artificial respiration in which the operator kneels at the head of the prone victim, compresses the chest manually by pressure on the back, and then pulls up the elbows thereby expanding the lungs called also Holger Nielsen method …   Medical dictionary

  • back pressure valve — atbulinis vožtuvas statusas T sritis Energetika apibrėžtis Vamzdyno vožtuvas, praleidžiantis skysčio ar dujų srautą vamzdynu ar kanalu tik viena kryptimi. atitikmenys: angl. back pressure valve; back flow valve vok. Rückschlagventil, n rus.… …   Aiškinamasis šiluminės ir branduolinės technikos terminų žodynas

  • back-pressure turbine — priešslėgio turbina statusas T sritis Energetika apibrėžtis Turbina, kurios naudoto ir iš turbinos išeinančio garo slėgis viršija atmosferos (aplinkos) slėgį. atitikmenys: angl. back pressure turbine vok. Gegendruckturbine, f rus. турбина с… …   Aiškinamasis šiluminės ir branduolinės technikos terminų žodynas

  • back pressure modulated — See negative back pressure modulated valve …   Dictionary of automotive terms

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