. Power, heating and ventilation ... a treatise for designing and constructing engineers, architects and students. Hot-Water Gen-erator with Mercury Seal. HOT-WATER HEATING BY GRAVITY CIRCULATION 137 danger of freezing, a circulating pipe is carried to a nearby returnin order to keep the water constantly moving through it. Whenin action the entire space between the mercury seal and the ex-. CONNECTION FROM SYSTEM Fig. 98. CONNECTIONFROMSYSTEM Fig. Tanks for Hot-Water Systems. pansion tank is filled with water. As the temperature in theheating system rises and the water expands, th
. Power, heating and ventilation ... a treatise for designing and constructing engineers, architects and students. Hot-Water Gen-erator with Mercury Seal. HOT-WATER HEATING BY GRAVITY CIRCULATION 137 danger of freezing, a circulating pipe is carried to a nearby returnin order to keep the water constantly moving through it. Whenin action the entire space between the mercury seal and the ex-. CONNECTION FROM SYSTEM Fig. 98. CONNECTIONFROMSYSTEM Fig. Tanks for Hot-Water Systems. pansion tank is filled with water. As the temperature in theheating system rises and the water expands, the surface of themercury is forced down in C, which causes it to rise in E. This 138 HEATING AND VENTILATING PLANTS continues until enough has been forced out of the cylinder C touncover the end of the tube, the effect of which is to allow thesurplus water to pass upward through the mercury into the cham-ber D and thus to the expansion tank with which it connects. Inthe meantime, the pressure must be maintained at a point suffi-cient to hold the surface of the mercury slightly below the endof the tube in order to provide an outlet for the water as it in-creases in volume. Other forms of generators make use of spring valves in placeof a mercury seal. Expansion Tank.—Every system for hot-water heating shouldbe connected with an expansion tank placed at a point somewhatabove the highe
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectventilation, bookyear
