Principles of Boiler Design for High Steam Temperatures

For years, engineers have striven for better and more efficient boilers in their efforts to produce electric power at the lowest possible cost. Their success has been such that today the best possibilities for still greater economy lie in directions other than increased boiler efficiency. These possibilities include improvements in the heat cycle, in the methods of firing, in functional operation, and in the maintenance of boiler units. As the field for improvement narrows, the greatest attention is being focused on increased cycle efficiency as probably the most promising possibility for further reducing the cost of a kilowatthour.