. The book of the garden. Gardening. HEATING BY HOT-WATER PIPES. 167 outside casing openings, one on Fig. cast upon it, with two each side, called the ingress and egress pipes; the one convey- ing the cold water, and the other taking away the warm, which causes the circulation within the cis- tern ; while the third case or outside cover- ing is placed about 4 inches ¥ from the double IIL covering, leav- ing sufficient room for a continued current of air to pro- ceed into the chamber to be heated. It is here where so many blunder. Air ought not to be roasted or boiled; it ought to be grad
. The book of the garden. Gardening. HEATING BY HOT-WATER PIPES. 167 outside casing openings, one on Fig. cast upon it, with two each side, called the ingress and egress pipes; the one convey- ing the cold water, and the other taking away the warm, which causes the circulation within the cis- tern ; while the third case or outside cover- ing is placed about 4 inches ¥ from the double IIL covering, leav- ing sufficient room for a continued current of air to pro- ceed into the chamber to be heated. It is here where so many blunder. Air ought not to be roasted or boiled; it ought to be gradually heated to a certain temper- ature, and that tem- perature must not range beyond 85° to 95°:" MrRettie tak- ing summer heat at 75°, which is the tem- perature he aims at producing in struc- tures heated upon his principle. On the cut a steam gauge-tube of glass will be seen, which will show at all times the height of water in the boiler and cistern; the draught and consequently the combustion of fuel are regulated by a well-contrived air-tight door and ash- pit register. For heating greenhouses and conserva- tories, where a more powerful and more permanent apparatus might be found difficult to place, this would be found a useful substitute, as for such purposes it might be fitted up in a portable state, having the pipes attached to it by union or flange j oints. To be of use as a radiator of heat from its sides, or for heating air made to pass between the outer casings, it would require to be placed inside the house. 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 McIntosh, Charles, 1794-1864. Edinburgh and London, W. Blackwood
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectgardening, bookyear18
