Illustrations of the theory and practice of ventilation : with remarks on warming, exclusive lighting, and the communication of sound (1844)
Reid, D. B. (David Boswell), 1805-1863 · London : Longman, Brown, Green, & Longmans · leaf 274
MILD HOT-WATER APPARATUS. 249 593. The most desirable arrangement of hot-water apparatus,in many large establishments where the apartments are not liableto be crowded, consists in providing a central warm water reser-voir a, Fig. 171, from which the whole building can be heated, Fig. 171. … the warm surface being expanded where great equality of tem-perature is necessary throughout the whole basement, as in b, c,d, and e. The warm water passes from a boiler to a, proceedingthen to b, c, d, and e, and returning ultimately at a lower levelto the boiler ; c and d are supposed to be…