Boiler types: The Cornish boiler is a horizontal, internally fired, fire-tube boiler with a single large furnace flue. State whether the following statement is correct: “Cornish boilers are multi-tubular boilers.”

Introduction / Context:
Cornish and Lancashire boilers are often contrasted in exams. Knowing their internal gas-path configuration is crucial to classify them correctly and avoid mixing the two.

Given Data / Assumptions:

• Cornish boiler uses a single furnace flue tube through the shell.
• Lancashire has two parallel furnace flues.
• Galloway cross-tubes may be fitted inside the main flue for heat transfer but do not create multiple main furnace tubes.

Concept / Approach:
“Multi-tubular” typically denotes several small fire-tubes carrying hot gases (as in locomotive boilers) or multiple large furnace flues (Lancashire vs Cornish). The Cornish boiler has one main flue; hence it is not multi-tubular in the normal classification sense.

Step-by-Step Solution:
Identify the count of main furnace flues in Cornish → one.Compare with Lancashire → two; locomotive → many small tubes.Apply definition → Cornish is not multi-tubular.Conclude statement → False.

Verification / Alternative check:
Standard boiler diagrams and textbooks depict a single, large, central furnace flue for Cornish boilers.

Why Other Options Are Wrong:
“True” variants confuse added Galloway tubes with multiple main furnace flues.

“Only Lancashire is multi-tubular” is partly descriptive but still misses the correct True/False evaluation asked.

Common Pitfalls:
Counting Galloway cross-tubes as separate furnace tubes; conflating Cornish with Lancashire layouts.

Final Answer:
False