. The launderer. A practical treatise on the management and the operation of a steam laundry . ists of a large elevated tank, used forstorage, and the water passing into this tank, and thenthrough an exhaust steam heater, becomes heated fromexhaust steam. There are many makes of hot-water heaters, butwhere there is a mineral deposit in the water, the authoradvises the use of that class of heater which not onlyheats the water, but also removes the greater percentageof mineral deposit. In this kind of heater the steamis exhausted at the bottom of a large steel tube; at thebottom of this tube is
. The launderer. A practical treatise on the management and the operation of a steam laundry . ists of a large elevated tank, used forstorage, and the water passing into this tank, and thenthrough an exhaust steam heater, becomes heated fromexhaust steam. There are many makes of hot-water heaters, butwhere there is a mineral deposit in the water, the authoradvises the use of that class of heater which not onlyheats the water, but also removes the greater percentageof mineral deposit. In this kind of heater the steamis exhausted at the bottom of a large steel tube; at thebottom of this tube is placed excelsior, and above theexcelsior several sections of plates of iron. Water isadmitted at the top, flows over these plates, and as itfalls it j^asses through the steam, when the mineraldeposit is ^precipitated, the water becomes heated, andis into the elevated tank. This class of heaterhas an oil separator, which removes all oil that theremay be in the exhaust steam, and prevents any of itfrom getting into the hot water. An example of thisform of heater is shown in Fia;. Fig. 3. MONITOR ?WATER PXTRIFIEK. (Monitor Water Purifier Co.) Another form of heater, which is much used, con-sists of an arrangement similar to the one already de-scribed, except tliat the inside is filled with coils ofcopper pipe, through which the exhaust steam heater is filled with cold water, and receives theheat from the steam bj radiation through the copperpipe, whence it flows by pressure into the tank. Withthis kind of heater no pump is required. A very cheaj) method of heating water is as follows:Have an elevated tank, in the bottom of which has beenplaced a coil of steam pijie, through which the steam isto be exhausted from the engine so that the steam heatwill radiate through the pipes into the water. Thecoil, in this case, should be sufficient to radiate all theheat in the steam, and should any steam escape whenthe tank is filled with cold water, it would indicate t
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