Les centrales à vapeur, leur conception et leur construction . chauffage à la chaudière. Si le bain wellis pas fournis avec des éponges ou des matériaux disposés à filterthe huile de la décharge de la pompe à air, un filtre en tissu doivent être placedbetween des pompes d'alimentation et les chaudières. Chaque bougie de shouldhave un by-pass, et dans la conduite menant à chaque bougie deux valvesshould être placés, l'un utilisé comme une soupape d'arrêt et l'autre comme un regu-relative qui doit être ajusté lorsque la plante n'est pas démarré, les centrales à vapeur. 83 de sorte qu'environ la même quantité d'eau va passer par des appareils de chauffage. Il s'agit d'un petit mor

• Contributeur: The Reading Room / Alamy Banque D'Images
• ID de l’image: 2ANJB40
• Taille du fichier: 7,1 MB (264,7 KB Téléchargement compressé)
• Autorisations: Modèle - non | Propriété - non
• Dimensions: 1393 x 1793 px | 23,6 x 30,4 cm | 9,3 x 12 inches | 150dpi

Informations supplémentaires

Cette image appartient au domaine public, ce qui signifie que le droit d’auteur a expiré ou que le titulaire du droit d’auteur a renoncé à ses droits. Les frais facturés par Alamy couvrent l’accès à la copie haute résolution de l’image.

Cette image peut avoir des imperfections car il s’agit d’une image historique ou de reportage.

Steam power plants, their design and construction . heater to the boilers. If the hot wellis not provided with sponges or some material arranged to filterthe oil from the air pump discharge, a cloth filter should be placedbetween the feed pumps and the boilers. Each heater shouldhave a by-pass, and in the pipe leading to each heater two valvesshould be placed, one used as a stop valve and the other as a regu-lating valve, which should be adjusted when the plant is started, STEAM POWER PLANTS. 83 SO that approximately equal amounts of water will pass throughthe heaters. It involves a little more complication to do this, butit insures each heater doing its full work. The arrangement shown in Figure 29 provides for the use of aheater of the closed type between the engine and condenser forof course an open heater could not be used in such a situation.It is not often the custom to place a heater between the engineand condenser and where that is not done an open heater mightbe used to receive the exhaust steam of the auxiliaries, and if so, . Figure 31.—Arrangement Auxiliaries Boston Electric LightCompanys Station. the arrangement of the feed-water piping would have to be dif-ferent from that shown. If the plant shown diagrammatically inFigure 29 was provided with jet condensers the boiler feed pumpsmight be arranged to draw their supply from the air pump dis-charge, as well as from the source of the fresh water supply andpump it through the heaters to the boilers. If ample feed water atlow cost was available the air pump discharge would probably beallowed to go to waste because of the grease in it and the pumps 84 STEAM POWER PLANTS. connected to draw fresh water. If the latter was under pressurethe water could be passed to an open heater first and the pumparranged to draw the water from it. This arrangement combinedwith an economizer is shown diagrammatically in Figure 32. Ifa surface condenser was used the air pump discharge might beled to an open hot well, arranged t

Recherche dans la banque de photos par tags

• bookcentury1900
• bookdecade1900
• bookpublishernewyorkmcgraw
• librury