Cyclopedia of heating, plumbing and sanitation; a complete reference work . dto the boiler by means of a pumpor return trap. Types of Radiating radiation used indirect-steamheating is made up of cast-ironradiators of various form-, piperadiators, and circulation coils. Cast=Iron Radiators. Thegeneral form of a east-iron sec-tional radiator is shown in Radiators of this type aremade up of sections, the number depending upon the amount of heating surface required. Fig. Hishows an intermediate section of a radiator of tins is simply a loop with inlet and outlet at the
Cyclopedia of heating, plumbing and sanitation; a complete reference work . dto the boiler by means of a pumpor return trap. Types of Radiating radiation used indirect-steamheating is made up of cast-ironradiators of various form-, piperadiators, and circulation coils. Cast=Iron Radiators. Thegeneral form of a east-iron sec-tional radiator is shown in Radiators of this type aremade up of sections, the number depending upon the amount of heating surface required. Fig. Hishows an intermediate section of a radiator of tins is simply a loop with inlet and outlet at the bottom. Theend sections are the same, except that they have legs. as shown inFig. 1. These sections are connected at the bottom by specialnipples, so that steam entering at the end tills the bottom of theradiator, and, being lighter than the air. rises through the loops andforces the air downward and toward the farther end, where it is dis-charged through an air-valve placed about midway of the lasl are many different designs varying in height and width, to. Fig. 15. Common Type •?( Cast-Iron 3 :>ual Radiator. 53 1-1 HEATING AND VENTILATION Miii all conditions. The wall pattern shown in Fig. 18 is very con-venienl when it is desired to place the radiator above the floor, as in bathrooms, etc.; it is also a con-venient form to place under thewindows of halls and churchesto counteract the effect ot colddown drafts. It is adapted tonearly every place where the or-dinary direct radiator can beused, and may he connected upin differenl ways to meet the \a-rious requirements. A low and moderately shallowradiator, with ample space for thecirculation of air between thesections, is more efficient than adeep radiator with the sectionsclosely packed together. ne- and tWO-Column radiators, so called, are preferable to three-and four-column, when there is sufficient space to use them. O m> i Show in -ii^ i ighl) )ia\ e legs.
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