WHB2 (CHP2) is also a conventional Aalborg AX-4 water tube waste heat boiler producing superheated high pressure steam with a maximum rated output of 75 te/hr and an unfired output of approximately 14 te/hr.
WHB2 is similarly equipped with twin R & V in-duct register burners for supplementary firing. NOx levels from WHB2 are not an issue (due largely to the much lower NOx levels from GT2.
The much larger burner capacity (49 MW max heat input when supplementary firing, 60 MW on fresh air firing) means that the minimum firing capacity (4 MW on supplementary firing and 6 MW on fresh air firing) are correspondingly higher than for WHB1 and therefore even on minimum firing, will produce a significant quantity of steam.
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