A treatise on architecture and building construction (1899)
International Correspondence Schools · Scranton, The Colliery engineer co. · leaf 246
Fig. 32. 81, Fig-. 32 shows an extended surface loop which is espe-cially designed for indirect heating. These loops, or ^^^//^;/.y, arecoupled together by nipples, as illustrated at a and c in Fig. 31. Another variety which is in extensive use for indirectheating is shown in Fig. 33. This is… … Fig. 83. because the extensions of the heating surface are made inthe shape of small conical pins. The sections may be coupledat both top and bottom, as shown. 82. Radiators of the kind shown in Fig. 31 should havesupports at short distances apart, particularly when the so HEATING AND VENTILATION…
Architecture · Building
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