. Greenhouse construction and heating: containing full descriptions of the various kinds of greenhouses, stove houses, forcing houses, pits and frames, with directions for their construction, and also descriptions of the different types of boilers, pipes, and heating apparatus generally, with instructions for fixing the same. Greenhouses. Fig. 103. Wherever three rows of piping are placed together they should be arranged in a similar manner, for this reason, that with a single flow pipe the hot water is carried much more quickly to the ? 3r\ farther end of the house than in a double one, while
. Greenhouse construction and heating: containing full descriptions of the various kinds of greenhouses, stove houses, forcing houses, pits and frames, with directions for their construction, and also descriptions of the different types of boilers, pipes, and heating apparatus generally, with instructions for fixing the same. Greenhouses. Fig. 103. Wherever three rows of piping are placed together they should be arranged in a similar manner, for this reason, that with a single flow pipe the hot water is carried much more quickly to the ? 3r\ farther end of the house than in a double one, while the current flows back more slowly and easily through the double return pipes, and the heat is consequently more evenly distributed than it could be with a double flow , and single return, though this plan is not infrequently adopted. In houses of moderate width it is an excellent plan to carry the single flow pipe along the front or near the outside wall, and the single or double return in or near the path- way at the back of the bed or stage, 3ft., 4ft., or possibly a little farther still from the first. In heating a span-roofed structure of considerable size, all that is necessary is to double this system, placing one set on each side, as shovm in Fig. 104, where the two returns are shown fixed one above the other on one side of the house, and side by side on the other. Of course, in such a case there must be two separate connections from the main flow pipe, each being fitted with a valve to open or close the current at Fig. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ravenscroft, B. C. London, L. U. Gill; New York, C. Scribner's sons
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectgreenho, bookyear1901
