. L'alimentation en eau chaude et cuisine connexions chaudière : un manuel sur l'installation d'eau chaude dans des résidences de services et d'autres bâtiments et les méthodes de connexion de chaudières à vapeur, gamme et chauffe-eau à gaz. d'être remplacé par l'eau froide qui entersthrough la liaison inférieure. Ce processus est assisté par thedesign du jet, qui brise la vapeur dans minute par-ticulier et le passe dans la cuve ou co-termedin événement car c'est une direction ascendante, ce qui tend à accélérer la vitesse de thecirculation à la chaudière. Dans ce type de bougies peut-être le réservoir sous pression si la pression doe

• Contributeur: The Reading Room / Alamy Banque D'Images
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. Hot water supply and kitchen boiler connections : a text book on the installation of hot water service in residences and other buildings and methods of connecting range boilers, steam and gas water heaters. being replaced by cold water which entersthrough the lower connection. This process is assisted by thedesign of the jet, which breaks up the steam into minute par-ticles and passes it into the vessel or co-mingler as it is termedin an upward direction, thus tending to hasten the speed of thecirculation to the boiler. In this type of heater the tank maybe under pressure if the pressure does not exceed that carriedin the steam boiler and if check valves are placed on the steam HEATING WATER BY STEAM. 137 supply line to prevent water from the tank finding its way intothe steam boiler should the pressure fall. Steam as an Auxiliary Heater. A tank may be connected with both steam coils and a waterheater of the usual type as shown in Fig. 101. This is commonlydone where steam is available from the heating system in thewinter time while the water may be heated from the tank heater Sfeom Supply fo CoH—, .Controlling Valveio Steam Coil Main Supply fo Building.;--^, Mo in Cold Water^-?Supply. Heater Supply^ f-O-- 6-i ?•.V.O: . .??l<i. / Heater PitConcreie StepsSides and Bottom .??•? Fig. 101. Method of Connecting Steam Coil and Heater to Hot Water Tank. at such times as the heating system is not in use. In the illus-tration the heater is placed in a pit but this need only be donewhen constructional obstacles prevent the raising of the boileren a stand to such height as will allow of a return to the heaterby gravity of the return water. Valves are also shown on thesupply to both heater and tank, these being intended to enablethe cold supply to the heater to be closed at such times as thewater is being heated by steam, and so when the by-pass valveis opened and that on the return connection lower down isclosed, cause the circulation to the building to take a shorter

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