Cornish boiler: typical shell diameter range Recall the common dimensions used in a single-flue Cornish fire-tube boiler. Choose the correct diameter range for the boiler shell.
Mechanical Engineering
Steam Boilers and Engines
Difficulty: Easy
Choose an option
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A0.5 to 1 m
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B1 to 2 m
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C1.25 to 2.5 m
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D2 to 3 m
Answer
Correct Answer: 1 to 2 m
Explanation
ConceptCornish boilers are horizontal, fire-tube, single large-flue units. Typical shells have diameters around 1–2 m and lengths around 4–7 m. Lancashire boilers are larger (often 2–3 m diameter) with two flues.
Elimination0.5–1 m is too small for a practical Cornish shell; 2–3 m is typical of Lancashire, not Cornish. 1.25–2.5 m overlaps but the standard textbook range is 1–2 m.
Final Answer1 to 2 m