SC Heating Practice Questions - South Carolina Heating Contractor Examination Exam

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A water-tube boiler has 80 tubes, each 2 inches in diameter and 20 feet long. Using the full-circumference heating-surface rule and π = 3.14, what is the heating surface, and what developed boiler horsepower does that represent at 10 ft²/BHP?

419 ft²; 42 BHP 628 ft²; 63 BHP 838 ft²; 84 BHP 1,256 ft²; 126 BHP

Correct Answer:

838 ft²; 84 BHP

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