pressure leakage

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• Pressure exchanger — A pressure exchanger transfers pressure energy from a high pressure fluid stream to a low pressure fluid stream. Many industrial processes operate at elevated pressures and have high pressure waste streams. One way of providing a high pressure… …   Wikipedia

• leakage —    1. The flow of water from one hydrogeologic unit to another. The leakage may be natural, as through semi impervious confining layer, or manmade, as through an uncased well [22].    2. The natural loss of water from artificial structures as a… …   Lexicon of Cave and Karst Terminology

• pressure — 1. A stress or force acting in any direction against resistance. 2. (P, frequently followed by a subscript indicating location)In physics and physiology, the force per unit area exerted by a gas or liquid against the walls of its container or… …   Medical dictionary

• Duct leakage testing — A duct leakage tester is a diagnostic tool designed to measure the airtightness of forced air heating, ventilating and air conditioning (HVAC) ductwork. A duct leakage tester consists of a calibrated fan for measuring an air flow rate and a… …   Wikipedia

• Magnetic flux leakage — (MFL) is a magnetic method of nondestructive testing that is used to detect corrosion and pitting in steel structures, most commonly pipelines and storage tanks. The basic principle is that a powerful magnet is used to magnetize the steel. At… …   Wikipedia

• Positive airway pressure — A typical CPAP machine houses the air pump in a case lined with sound absorbing material for quieter operation. A hose carries the pressurized air to a face mask or nasal pillow …   Wikipedia

• Intracranial pressure — (ICP) is the pressure inside the skull and thus in the brain tissue and cerebrospinal fluid (CSF). The body has various mechanisms by which it keeps the ICP stable, with CSF pressures varying by about 1 mmHg in normal adults through shifts in… …   Wikipedia

• Intraocular pressure — (IOP) is the fluid pressure inside the eye. Physiology and measurementIntraocular pressure is mainly determined by the coupling of the production of aqueous humor from the eye s ciliary body and its drainage through the trabecular meshwork and… …   Wikipedia

• Negative room pressure — Schematic of negative pressure room, showing the inflow, but not outflow, of air from the corridor and other rooms into the negative pressure room used for isolation. Exhaust air is remove via a ventilation system. Negative room pressure is an… …   Wikipedia

• detrusor leak point pressure — as the bladder fills without an increase in abdominal pressure, the level of pressure at which leakage of urine through the urethra occurs; this is a measure of both strength of the urethral sphincters and compliance of the detrusor urinae muscle …   Medical dictionary

• leak point pressure — as the bladder fills, the pressure at which leakage occurs through the urethra, used as a measure of strength of the urethral sphincters. See detrusor leak point p. and Valsalva leak point p …   Medical dictionary