“condenser”的概念、定义、翻译、参考文献-科学参考

condenser

Physics

1. A mirror or set of lenses used in optical instruments, such as a microscope or film projector, to concentrate the light diverging from a compact source. A common form consists of two plano-convex lenses with the plane faces pointing outwards.

2. A device used to cool a vapour to cause it to condense to a liquid. In a steam engine the condenser acts as a reservoir that collects the part of the steam’s internal energy that has not been used in doing work on the piston. The cooling water passed through the condenser is warmed and is used as fresh feedwater for the boiler.

3. See capacitor.

Chemistry

A device used to cool a vapour to cause it to condense to a liquid. See Liebig condenser.

Chemical Engineering

A type of heat exchange used to cool a vapour at constant pressure to a temperature that is sufficiently low as to change the state from a vapour to a liquid, and to carry away the heat from the vapour–liquid mixture. The latent heat is removed using a coolant. The coolant evidently increases in temperature but it is the phase change action that is the important function.

Condensers fall into two classes: those that condense vapour using a coolant separated in a shell and tube device, and those called contact condensers in which coolant and vapour are mixed and leave together in a single stream. They are used with distillation columns to produce reflux to control top temperatures and product quality. They are also used for steam turbines to produce condensate and to maximize the energy from the steam.

Electronics and Electrical Engineering

An obsolete term for capacitor.

Geology and Earth Sciences

In microscopy, a hemispherical lens or series of lenses which helps to direct the optimum amount of light through varying sizes of aperture in objectives of various magnifications. Condensers are usually placed on the microscope below the stage, between the polarizer and the mineral specimen. In the control of illumination, the area of light from the illuminator is normally cut by the condenser to equal the field of view, thus minimizing glare due to interference from marginal light.

单词	condenser
释义	condenser Physics 1. A mirror or set of lenses used in optical instruments, such as a microscope or film projector, to concentrate the light diverging from a compact source. A common form consists of two plano-convex lenses with the plane faces pointing outwards. 2. A device used to cool a vapour to cause it to condense to a liquid. In a steam engine the condenser acts as a reservoir that collects the part of the steam’s internal energy that has not been used in doing work on the piston. The cooling water passed through the condenser is warmed and is used as fresh feedwater for the boiler. 3. See capacitor. Chemistry A device used to cool a vapour to cause it to condense to a liquid. See Liebig condenser. Chemical Engineering A type of heat exchange used to cool a vapour at constant pressure to a temperature that is sufficiently low as to change the state from a vapour to a liquid, and to carry away the heat from the vapour–liquid mixture. The latent heat is removed using a coolant. The coolant evidently increases in temperature but it is the phase change action that is the important function. Condensers fall into two classes: those that condense vapour using a coolant separated in a shell and tube device, and those called contact condensers in which coolant and vapour are mixed and leave together in a single stream. They are used with distillation columns to produce reflux to control top temperatures and product quality. They are also used for steam turbines to produce condensate and to maximize the energy from the steam. Electronics and Electrical Engineering An obsolete term for capacitor. Geology and Earth Sciences In microscopy, a hemispherical lens or series of lenses which helps to direct the optimum amount of light through varying sizes of aperture in objectives of various magnifications. Condensers are usually placed on the microscope below the stage, between the polarizer and the mineral specimen. In the control of illumination, the area of light from the illuminator is normally cut by the condenser to equal the field of view, thus minimizing glare due to interference from marginal light.
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