دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a cooling agent, usually a fluid, such as the liquid applied to the edge of a cutting tool to carry off frictional heat or a circulating fluid for cooling an engine.

n: see water pump.

n: coolant, such as water, that circulates through spaces in the engine block.

n: a temperature-sensitive device installed on engines in extremely cold climates, such as in Alaska and Siberia. Before the engine is started, the switch senses very cold coolant and turns on an immersion heater in the coolant tank, thus ensuring that the engine warms up quickly.

n: on an engine, a device through which engine lubricating oil is circulated to reduce its temperature to acceptable levels. Some oil coolers depend on the surrounding air to reduce the temperature, but on most large engines, the oil is circulated through tubes that are surrounded by engine coolant.

n: on an engine, the tube or tubes through which engine coolant is circulated. These tubes bend back and forth several times so that the coolant will have plenty of surface to contact as it flows through them. Very thin metal plates (fins) are attached to the tube, which radiate heat in the coolant to the surrounding air.

n: on an engine, very thin metal plates that are attached to the radiators tubes. Because there are hundreds of these plates in contact with the surrounding air, they efficiently radiate heat from the coolant circulating through the tubes.

n: on an engine, one of usually two flexible, reinforced tubes that conduct coolant in or out of the engine to or from the radiator. One hose is at the top of the engine and conducts hot coolant to the radiator;the other is at the bottom of the engine and conducts cooled coolant from the radiator back into the engine.

n: on an engine radiator, the piping through which coolant travels, usually from top to bottom, through the radiator. Radiator tubes usually have fins attached to them, which radiate (give up) heat to the surrounding air.

n: in an engine radiator, the distance between the tubes through which coolant flows and the fins on the tubes that radiate heat into the air. The manufacturer must put enough tubes and fins on the radiator to adequately cool the engine on which the radiator will be mounted, yet not so many that some tubes block the flow of air across other tubes.