دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: an atmospheric fin tube exchanger that utilises air for cooling. Ambient air contacts the external fins by fanforced or natural draft. Also called air-fin unit or aerial cooler.

adj: having inadvertent mechanical incorporation of air into a liquid system.

n: a glass-stem thermometer totally encased in a glass sheath, which provides air space between the thermometer and the liquid in which the unit is immersed.

n: a body designed to provide a desired reaction force when in motion relative to the surrounding air.

n: a warning device triggered by the presence of abnormal conditions in a machine or system. For example, a lowwater alarm automatically signals when the water level in a vessel falls below its preset minimum. Offshore, alarms are used to warn personnel of dangerous or unusual conditions, such as fires and escaping gases.

preset value of a monitored parameter at which an alarm is actuated to warn of a condition that requires corrective action.

the oldest terrain from the Cretaceous period.

carbon and hydrogen compounds that may be branched of straight chained. Aliphatics may be paraffin (saturated) or olefinic (unsaturated).

n pi: hydrocarbons that have a straight chain of carbon atoms. Compare aromatic hydrocarbons.