. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . SUPERHE.\TER HE.\ SHOWING Xtinilol .\TT.\CHING UNITS. locomotives has now entered the field ofstationary practice with a design which itcalls the Elesco superheater. The principle of this superheater isidentical with that used for locomotive certain fundamentals governing the choiceof this location that is applicable to allboilers. The fact that the temperature of thesuperheated steam i higher than that of which should be the coolest water in theboiler, just before reaching the
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . SUPERHE.\TER HE.\ SHOWING Xtinilol .\TT.\CHING UNITS. locomotives has now entered the field ofstationary practice with a design which itcalls the Elesco superheater. The principle of this superheater isidentical with that used for locomotive certain fundamentals governing the choiceof this location that is applicable to allboilers. The fact that the temperature of thesuperheated steam i higher than that of which should be the coolest water in theboiler, just before reaching the , then, requires that the superheatershould be so located in the gas passagesthat, after the products of combustion. ELlvSCO SUFERHEATER ADAPTED TU RETURN TYPE BOILER, work. That is to say, there is a headerconnected to the boiler which serves as areceiver of the superheated steam. Fromthis header a number of small pipes leadoff forming loops in the passage for theproducts of combustion and returning toa similar header into which they deliverthe steam that has become superheater the saturated steam from which it isformed, and as the water in the boiler isof approximately the same temperature asthat of saturated steam, it follows that thosuperheated steam will extract less heatfrom gases of a given temperature underthe same conditions than will the water,because the ■ passage of heat through have swept over them, they should passover other and cooler heating surfaces be-fore reaching the uptake. It also indicatesthat it should be located as close as possi-ble to the point of the highest tempera-ture of the furnace without interferingwith the process of
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