| dbo:abstract |
المكثف السطحى هو مكثف شائع الاستخدام لمبادل حرارى أنبوبى غلافى لتبريد المياه يتم تركيبه على مخرج التربينة البخارية لتكثيف البخار الخارج في محطات الطاقة.هذه المكثفات هي مبادلات حرارية تحول البخار من الحالة الغازية إلى الحالة السائلة عند ضغط يكون اقل من الضغط الجوى. يمكن استخدام الهواء لتبريد البخار بدلا من الماء في حالة عدم توافرها. مكثف المستخدم للهواء يكون ثمنه عالي جدا، أما المكثف المستخدم للماء في التبريد فيصل بالبخار إلى ضغط منخفض جدا عن الذي يصل له في حالة المكثف المستنخدم للهواء. (ar) Un condenseur par surface (en anglais surface condenser) est un terme couramment utilisé pour désigner un échangeur de chaleur coque et tube refroidi à l'eau, installé sur le flux de vapeur d'échappement d'une turbine à vapeur dans des centrales thermiques. Ces condenseurs sont des échangeurs de chaleur qui convertissent la vapeur de son état gazeux à son état liquide à une pression inférieure à la pression atmosphérique. Lorsque l’eau de refroidissement est rare, un condenseur à air est souvent utilisé. Cependant, un condenseur à air est nettement plus coûteux et ne peut atteindre une pression (et une température) d'échappement de turbine à vapeur aussi basse qu'un condenseur à surface refroidi à l'eau. Les condenseurs de surface sont également utilisés dans des applications et des industries autres que la condensation des gaz d'échappement des turbines à vapeur dans les centrales électriques. (fr) A surface condenser is a water-cooled shell and tube heat exchanger installed to condense exhaust steam from a steam turbine in thermal power stations. These condensers are heat exchangers which convert steam from its gaseous to its liquid state at a pressure below atmospheric pressure. Where cooling water is in short supply, an air-cooled condenser is often used. An air-cooled condenser is however, significantly more expensive and cannot achieve as low a steam turbine exhaust pressure (and temperature) as a water-cooled surface condenser. Surface condensers are also used in applications and industries other than the condensing of steam turbine exhaust in power plants. (en) 表面冷凝器（surface condenser）是指安装在火力发电站的水冷，用于冷凝蒸汽轮机排出的蒸汽。表面冷凝器是一种换热器，在低于大气压的压力下将蒸汽从气态转化为液态，同時這些液態水還能輸送至蒸汽发生器或锅炉中繼續使用。 (zh) |
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المكثف السطحى هو مكثف شائع الاستخدام لمبادل حرارى أنبوبى غلافى لتبريد المياه يتم تركيبه على مخرج التربينة البخارية لتكثيف البخار الخارج في محطات الطاقة.هذه المكثفات هي مبادلات حرارية تحول البخار من الحالة الغازية إلى الحالة السائلة عند ضغط يكون اقل من الضغط الجوى. يمكن استخدام الهواء لتبريد البخار بدلا من الماء في حالة عدم توافرها. مكثف المستخدم للهواء يكون ثمنه عالي جدا، أما المكثف المستخدم للماء في التبريد فيصل بالبخار إلى ضغط منخفض جدا عن الذي يصل له في حالة المكثف المستنخدم للهواء. (ar) 表面冷凝器（surface condenser）是指安装在火力发电站的水冷，用于冷凝蒸汽轮机排出的蒸汽。表面冷凝器是一种换热器，在低于大气压的压力下将蒸汽从气态转化为液态，同時這些液態水還能輸送至蒸汽发生器或锅炉中繼續使用。 (zh) A surface condenser is a water-cooled shell and tube heat exchanger installed to condense exhaust steam from a steam turbine in thermal power stations. These condensers are heat exchangers which convert steam from its gaseous to its liquid state at a pressure below atmospheric pressure. Where cooling water is in short supply, an air-cooled condenser is often used. An air-cooled condenser is however, significantly more expensive and cannot achieve as low a steam turbine exhaust pressure (and temperature) as a water-cooled surface condenser. (en) Un condenseur par surface (en anglais surface condenser) est un terme couramment utilisé pour désigner un échangeur de chaleur coque et tube refroidi à l'eau, installé sur le flux de vapeur d'échappement d'une turbine à vapeur dans des centrales thermiques. Ces condenseurs sont des échangeurs de chaleur qui convertissent la vapeur de son état gazeux à son état liquide à une pression inférieure à la pression atmosphérique. Lorsque l’eau de refroidissement est rare, un condenseur à air est souvent utilisé. Cependant, un condenseur à air est nettement plus coûteux et ne peut atteindre une pression (et une température) d'échappement de turbine à vapeur aussi basse qu'un condenseur à surface refroidi à l'eau. (fr) |
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مكثف سطحي (ar) Condenseur par surface (fr) Surface condenser (en) 表面冷凝器 (zh) |
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