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Natural gas with heating value 1,044 Btu/ft3 supplies a boiler that provides 85,000 lb/hr of saturated...

Natural gas with heating value 1,044 Btu/ft3 supplies a boiler that provides 85,000 lb/hr of saturated steam at 265 psia. Feedwater to the boiler is 190 deg.F. Boiler heating efficiency is 0.82, find the flowrate of natural gas to the boiler. [Answer: 103,600 ft3 natural gas/hr.]

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