دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: losses that occur to hydrocarbon liquids as the lighter components vaporize and leave the liquid.

n: the existence of a substance in the gaseous state.

n: see bubble point.

n: the pressure exerted by the vapor of a substance when the substance and its vapor are in equilibrium. Equilibrium is established when the rate of evaporation of a substance is equal to the rate of condensation of its vapor.

the pressure exerted by the gas phase (vaporized liquid) in equilibrium with the system conditions.

n: a system or method by which vapors are retained and conserved.

n: (VRU) 1. in petroleum refining, a process unit consisting of a scrubber and a compressor. It is designed to recover petroleum from hydrocarbon vapors and safely to handle toxic gases produced from some wells. 2. in production operations, equipment designed to recover light ends that are released from oil in a stock or other tank.

a device that removes mists and vapors from gas in a tank or enclosure.

n: the partition coefficient, usually designated as K, which is equivalent to y/xm, where y is the mole fraction of a given component in the vapor phase that is in equilibrium with x, the mole fraction of the same component in the liquid phase. K is a function of temperature, pressure, and composition of the particular system.

n: The light be fixed in the pyrex glass shade ,which can prevent catching fire when the light blasting.

n: a tank of conventional shape intended primarily for the storage of volatile liquids such as gasoline and so constructed that it can withstand pressures differing only slightly from atmospheric. Such tanks are equipped with special devices that permit gauging without opening the tank to the atmosphere.

n: 1. the act or process of converting a substance into the vapor phase. 2. the state of substances in the vapor phase.