. The street railway review . hird of the return condensation would go to the sewer. The objectin using a surface condenser is to be able to save all the condensa-tion for the boilers, thus using very little new water. This can beaccomplished only by connecting the float valve .to the pump steam Mail is, i)os1 RAILWAY , 167 OliMicilion, :liicI if il is dcsiri-d ;il ;iiiy liiiii lo skim off (lit- lup of theluMlir w:ilii tills ri-adily lie iloiic hy sliiilliiiK slcarii fifT llie|jii]iip for a iiiiiiutr (ir s(i. The licakT niamifacliinT will possiliiy oiiposc this style of
. The street railway review . hird of the return condensation would go to the sewer. The objectin using a surface condenser is to be able to save all the condensa-tion for the boilers, thus using very little new water. This can beaccomplished only by connecting the float valve .to the pump steam Mail is, i)os1 RAILWAY , 167 OliMicilion, :liicI if il is dcsiri-d ;il ;iiiy liiiii lo skim off (lit- lup of theluMlir w:ilii tills ri-adily lie iloiic hy sliiilliiiK slcarii fifT llie|jii]iip for a iiiiiiutr (ir s(i. The licakT niamifacliinT will possiliiy oiiposc this style of Kverriint;. ilaitiiiiiK lii i is imt tln regular iiiclhod. For all other applica-liiins llii-ir niclliid as shown liy FiR. 26 is correct but for surfacetoiidiiiscr il IS rarlirally wroiiR. The absurd claim is soinctitncsmade- Ihat wluii a heavy load comes 011. the boilers would evaporatewater to a low water level and it should be possible for the firemanto spee<l up the piunii in order to increase the water in the FIG. 27. The velocity uf steam m pipe lines should not be taken at less than1,000 ft. per minute and with this speed it would take about 5 secondsfor steam to leave the boiler, reach the condenser, and be con-densed ready to deliver back to the heater. The fireman would nothave time to even see the change in the boiler water level by thelime the feed pumps were under control of the changed condition. The system shown in hig. 25 is not suitable for a non-condensingor for a jet condenser plant, but it is desirable for the returns of ahealing system which is also a surface condenser. In Fig. 26 ;nowii the regular method of heater connections using a float controlvalve in the water supply line. Line A is the discharge from the^teani traps, etc., which must be left open at all times. This wouldalso be the discharge from tlie wet vacuum pump in case Fig. 2() JJ JJ ^/.•^ % Coo/. /A/S nc. 28. were used for a surface condenser system. The line A should de-
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
