. The book of the garden. Gardening. THE TANK MODE OF HEATING. 211 of the boiler, as will be seen by the ac- companying sketch, fig. 281, to be carried along the front of the pit immediately under the glass, and to terminate at the extreme end of the return-tank a ; b b is the boiler; c c the tanks; d the steam- pipe. When the steam-pipe is to be used, the flow-pipe from the boiler into the tank is intended to be stopped. Our objection to the use of steam in this case is, that the water in the boiler must be kept at such a temperature as to supply the steam-pipe at 212°; for below that point s
. The book of the garden. Gardening. THE TANK MODE OF HEATING. 211 of the boiler, as will be seen by the ac- companying sketch, fig. 281, to be carried along the front of the pit immediately under the glass, and to terminate at the extreme end of the return-tank a ; b b is the boiler; c c the tanks; d the steam- pipe. When the steam-pipe is to be used, the flow-pipe from the boiler into the tank is intended to be stopped. Our objection to the use of steam in this case is, that the water in the boiler must be kept at such a temperature as to supply the steam-pipe at 212°; for below that point steam would condense, or rather would not be generated. Such a temperature as this is seldom desirable wherever hot water is employed in heat- ing. It would be much better to use a 3-inch hot-water pipe, furnished with a cock, so that the water could be allowed to flow through it when required. One pipe, in this case, would do, as it could empty itself into the return-tank; and this pipe must be on a level with the water in the tank, or be upon the siphon principle. The former, where it can be conveniently adopted, is the simplest and best. Wherever the tank system is used, unless for the purpose of heating borders or pits for particular purposes, we would recommend, as an absolute condition in insuring complete success, to employ a hot-water pipe in conjunction with the tank, for supplying atmospheric heat, and that unaccompanied with so much humidity as would be given out by the tank alone. Tanks, as we have seen, are usually divided, thus forming a flow and return circulation. An instance, amongst some others, has been shown by F. Harrold Fenn, where this mode is departed from. He employs a brick-cemented gutter, which passes directly round the house from the boiler to it again. Another rather unusual feature in this case is, that the water, in passing from the boiler to the tank or gutter, has to fall under the level of the doorway, and rise again, through a leaden pipe, to
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectgardening, bookyear18
