The author points out that the temperature of the pulverized coal should be kept as high as posible to increase the pulverizing capacity and combustion efficiency. This paper describes an experimental result concerning the temperature control system of boiler pulverized coal and the boiler dynamic characteristics.

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The economic load dispatch of the variable steam power stations of a system can bedetermined by an electronic self balancing type analog computer using the incremental rate method.
The total power of the system is compared with demanded load and the computer adjusts. incremental cost λ continuously so that each station generates optimum output for any given system load on the economical basis.
The computer also can be used for short-range operation of hydraulic power station, having: regulatable pond to set up a suitable equivalent cost of water.

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