Cochran boiler orientation check State whether this statement is correct: A Cochran boiler is a horizontal multi-tubular boiler.

Difficulty: Easy

Correct Answer: No

Explanation:


Introduction / Context:
The Cochran boiler is widely cited in basic boiler courses. Getting its classification right helps avoid confusion with other small shell boilers. The key identifiers are its vertical orientation and multi-tubular fire-tube construction.


Given Data / Assumptions:

  • Cylindrical vertical shell with a domed (hemispherical) top.
  • Internal furnace at the bottom and multiple small fire tubes carrying hot gases.
  • Natural circulation and moderate pressure capability.


Concept / Approach:
Because the shell is vertical and the tube bank rises upward to the smoke box, the Cochran boiler is a vertical multi-tubular fire-tube unit. A “horizontal multi-tubular boiler” describes locomotive or horizontal shell types, not Cochran.


Step-by-Step Solution:
Check orientation: Cochran shell is vertical, not horizontal.Check tube arrangement: many small fire tubes (multi-tubular).Therefore, the given statement claiming “horizontal” is incorrect.


Verification / Alternative check:
Textbook figures consistently show a vertical cylindrical shell with hemispherical crown and fire tubes—signature Cochran features.


Why Other Options Are Wrong:
Any option affirming “horizontal” misidentifies the design; references to superheaters or service type do not change the fundamental orientation.


Common Pitfalls:
Confusing Cochran with locomotive boilers, which are horizontal and multi-tubular.


Final Answer:
No

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