natural gas boiler load curve

Boiler Efficiency | How to balance steam loads efficiently ...

Aug 26 2011 · The first step is to understand the load-versus-efficiency characteristics of a typical package boiler. Table 1 shows performance variation as a function of load. The boiler with an economizer generates 100000 lb/h of saturated steam at 400 psig using natural gas. At load the exit gas temperature is 320 °F. Excess air is 15%.

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