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1959 One boiler 1959 Steam line 1970 One boiler 71 School 7500 KW Turbine Accumulated Total Capital ADDING BOILERS additional capital investment additional investment Annual Electric Consumption annual operating cost back pressure turbine-generators back pressure turbines boiler additions boiler and associated boilers and back BTU Required Capital Cost 1959 Central Campus central heating coal handling system condensing turbines connecting Washington Street cubic foot Detroit Edison DETROIT EDISON COMPANY economical electric load Estimated Capital Cost existing boilers Figure fly ash heating steam Huron River plant Huron River site kilowatthours lb per hour line connecting Washington Peak Electric Demand peak steam plan is shown plans considered present Washington Street purchased power Required for Electric retired Saturated Boiler spare boiler capacity Spring Fall SSOCIATES Steam and Electric Steam line connecting steam requirements Student Enrollment tons turbine and associ turbine-generator units two-unit building University of Michigan Washington Street plant