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During a boiler test, a boiler burned 836.031 kg of coal with a heating value of 29,000 kJ/kg. The boiler generated 7,000 kg of dry

During a boiler test, a boiler burned 836.031 kg of coal with a heating value of 29,000 kJ/kg. The boiler generated 7,000 kg of dry steam at 4,000 kPa at saturated condition, from feedwater at 90 degrees Celsius. Determine the boiler efficiency.

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