Mastering power production ; the industrial, economic and social problems involved and their solution . perating records. Undoubtedly, in many cases of this kinda cooperation between the central station service and the iso-lated plant is the most desirable solution of the problem bothfrom a financial and a conservation viewpoint. During theperiod when heating is needed, central stations have heavy loadsand should not care to add to their peaks while the isolatedplant, utilizing the exhaust steam could attain very high econ-omy. On the other hand, when no heating is required the iso-lated plant
Mastering power production ; the industrial, economic and social problems involved and their solution . perating records. Undoubtedly, in many cases of this kinda cooperation between the central station service and the iso-lated plant is the most desirable solution of the problem bothfrom a financial and a conservation viewpoint. During theperiod when heating is needed, central stations have heavy loadsand should not care to add to their peaks while the isolatedplant, utilizing the exhaust steam could attain very high econ-omy. On the other hand, when no heating is required the iso-lated plant in a general case becomes wasteful and the pur-chase of electric service is desirable, while central stations withdecreased summer demands should appreciate the opportunityto improve their load and machine factor, reduce idleness, and obtainother obvious advantages from seasonal consumers. Yet, movedby motives beyond the scope of this chapter such seasonal serv- 3§7 ice is usually refused by the public utilities and some publicservice commissions failed to reach a decision favorable to the LEGEND. |[|<- 1916 -H Fig. 128.—Comparison of Promised Saving and Actual Costs The rates for purchased electric power appear very favorable when comparedwith the operating cost of a poorly managed plant. When instead of purchasingelectricity from outside, methods of management and operation were bettered,the offered rates proved to be far in excess of the actual operating expense. Nocredit has been allowed for the use of exhaust steam. public and beneficial for the fuel conservation. Small isolatedplants working purely for light or power are seldom warrantedeconomically or financially. Inefficient equipment as compared 388 with central stations, heavy overhead or small output, liability forbreakdowns and similar handicaps are generally so pronounced thatreplacement of such plants by Central service is the most ad-visable course readily disclosed by a cost analysis. Yet a seriouslimitat
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