Correct Answer - Option 1 : Cochran
Explanation:
Natural circulation:
If the circulation of water takes place due to the difference in density caused by the temperature of the water, then it is called a natural circulation boiler.
Boiler with the natural circulation of water:
- Lancashire boiler
- Babcock-Wilcox boiler
- Cochran boiler
Forced circulation:
If the circulation water takes place with the help of an external pump, then it is called a forced circulation boiler.
Boiler with forced circulation of water:
