Cyclopedia of heating, plumbing and sanitation; a complete reference work . nace gases and the water in a hot-waterheater, as compared with steam, the heating surface will be moreefficient and a smaller heater can be used. While this i- true to acertain extent, different authorities agree that this advantasmall that no account should he taken of it, and the general propor-tions of the heater should be calculated in the same manner as forsteam. Fig. 70 shows a form of hot-water heater made up of slabsor sections similar to the sectional -team boiler shown in Part size can be increased in
Cyclopedia of heating, plumbing and sanitation; a complete reference work . nace gases and the water in a hot-waterheater, as compared with steam, the heating surface will be moreefficient and a smaller heater can be used. While this i- true to acertain extent, different authorities agree that this advantasmall that no account should he taken of it, and the general propor-tions of the heater should be calculated in the same manner as forsteam. Fig. 70 shows a form of hot-water heater made up of slabsor sections similar to the sectional -team boiler shown in Part size can be increased in a similar manner, by adding moresections. In this case, however, the boiler is increased in width in-stead of in length. This has an advantage in the larger sizes, a- asecond fire door canbe added, and allparts of the gratecan be reached ;i-well in the large sizesas in the small. Fig. 80 shows adifferent form of sec-tional boiler, in whicht h e s ect i o n s areplaced one above an-other. These boiler-are circular in formand well adapted todwelling-houses andsimilar
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