Electrical news and engineering . S^rt^rs. rjvrxs OiXmDO innce Smcu. of 86,000 Kw. Elect pressure of 300 lb. and is fed into the super-heater, flowingoutside of the super-heater tubes. It is then passed througha reducing valve, which reduces it to 150 lb. pressure, andit is fed into the super-heater again, passing inside thesuper-heater tubes and thence to the main steam line. Thesteam at 150 lb. pressure inside the tubes, being at 366° P.,absorbs heat from the 300 lb. pressure steam outside thetubes, which is at a temperature of 420° F., and passes tothe main steam line in a super-heated cond
Electrical news and engineering . S^rt^rs. rjvrxs OiXmDO innce Smcu. of 86,000 Kw. Elect pressure of 300 lb. and is fed into the super-heater, flowingoutside of the super-heater tubes. It is then passed througha reducing valve, which reduces it to 150 lb. pressure, andit is fed into the super-heater again, passing inside thesuper-heater tubes and thence to the main steam line. Thesteam at 150 lb. pressure inside the tubes, being at 366° P.,absorbs heat from the 300 lb. pressure steam outside thetubes, which is at a temperature of 420° F., and passes tothe main steam line in a super-heated condition. The con-densate from the super-heater is drained back into theboiler feed. In a super-heater designed to super-heat 20,-000 lb. of steam per hour at 150 lb. pressure from 2 percent moisture to 50° of super-heat the total heat to betransfered was 616,000 per hour. The mean tem-perature difference was 30° F., and the heat transferred persquare foot of heating surface per degree temperature dif- TH E K L K f T R 1 C A I. .\ \. \V S ferencc was ()
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