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Q. |
Which type of boilers use orifice to control the flow circulation? |
A. | natural circulation boilers |
B. | forced convection boilers |
C. | once-through boilers |
D. | positive forced circulation boilers |
Answer» B. forced convection boilers | |
Explanation: in these boilers water is circulated by using an additional pump. these boilers often use orifices to control the flow circulation. orifices are located at the bottom of the tubes that ensure even distribution of flow through water wall tubes. these boilers can generate steam upto about 200 bar. |
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