turbine à vapeur à contre pression
- Domaine
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- génie mécanique turbine à vapeur
- Date
Note :
Dans le cycle de cette turbine, la vapeur utilisée est envoyée au condenseur en lui conservant une certaine pression pour la maintenir à température assez élevée. La chaleur de ces turbines est destinée au chauffage industriel ou au chauffage des locaux.
Terme :
- turbine à vapeur à contre pression n. f.
Traductions
-
anglais
Date :Définition
A type of steam turbine in which all the exhaust steam is used for heating purposes. Steam at low pressure for heating purposes or process work must be free from contaminants. Turbine exhaust finds use in industrial areas such as textiles, laundries, sugar refining and paper manufacture.
Note :
To utilize a steam turbine plant for heating purposes it is necessary to raise the temperature of energy rejection, that is, to raise the pressure in the condenser - the higher the pressure, the higher, too, the temperature attainable by the coolant. Back-pressure plants are smaller than cold condenser plants because the low pressure stages of the turbine are eliminated and the steam in the turbine reaches a smaller volume. An additional advantage is the elimination of the cooling towers of conventional power stations. On the other hand, the power output is reduced. For modest back pressures this amounts to some 1 per cent per 3°C increase in condensing temperature.
Terme :
- back-pressure steam turbine