Defence Exam > Defence Questions > The purpose of surge tank is ________.a)To co...
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The purpose of surge tank is ________.
- a)To control the pressure variations due to rapid changes in pipe line flow
- b)To eliminate water hammer possibilities
- c)To regulate flow of water to turbines by providing necessary retarding head of water
- d)All options are correct
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
The purpose of surge tank is ________.a)To control the pressure variat...
A surge tank (or surge chamber) is a device introduced within a hydropower water conveyance system having a rather long pressure conduit to absorb the excess pressure rise in case of a sudden valve closure.
It also acts as a small storage from which water may be supplied in case of a sudden valve opening of the
turbine. In case of a sudden opening of turbine valve, there are chances of penstock collapse due to a negative pressure generation. If there is no surge tank.
Surge tanks are usually provided in high or medium - head plants when there is a considerable distance between the water source and the power unit, necessitating a long penstock. The main functions of the surge tank are:
1. When the load decreases, the water moves backwards and gets stored in it.
2. When the load increases, an additional supply of water will be provided by the surge tank.
Most Upvoted Answer
The purpose of surge tank is ________.a)To control the pressure variat...
Purpose of Surge Tank
The purpose of surge tank in pipelines is to provide additional storage capacity to handle rapid changes in pipeline flow, prevent water hammer, and regulate the flow of water to turbines by providing necessary retarding head of water. Let's discuss each purpose in detail.
Control Pressure Variations
Surge tanks control pressure variations in pipelines caused by sudden changes in flow rate. When a valve is rapidly opened or closed, water flow can cause pressure waves that travel along the pipeline, and if left unchecked, can cause damage to pipelines or equipment. The surge tank absorbs these pressure waves and maintains the pressure in the pipeline at a constant level, protecting the pipeline.
Eliminate Water Hammer
Water hammer is a phenomenon that occurs when water flow is suddenly stopped or slowed down, causing a shock wave that can damage pipes or equipment. Surge tanks help to eliminate water hammer by providing additional storage for water, allowing the pressure wave to be dissipated safely.
Regulate Flow of Water
Surge tanks are also used to regulate the flow of water to turbines by providing the necessary retarding head of water. The surge tank is located at a higher elevation than the turbines, and water is stored in the tank. When the turbines require more water, water is released from the tank to the turbines, providing the necessary head of water for efficient operation.
Conclusion
In summary, surge tanks are an essential component of pipeline systems used to control pressure variations, eliminate water hammer, and regulate the flow of water to turbines. These tanks provide additional storage capacity to handle rapid changes in pipeline flow, protecting the pipeline and equipment from damage.
The purpose of surge tank in pipelines is to provide additional storage capacity to handle rapid changes in pipeline flow, prevent water hammer, and regulate the flow of water to turbines by providing necessary retarding head of water. Let's discuss each purpose in detail.
Control Pressure Variations
Surge tanks control pressure variations in pipelines caused by sudden changes in flow rate. When a valve is rapidly opened or closed, water flow can cause pressure waves that travel along the pipeline, and if left unchecked, can cause damage to pipelines or equipment. The surge tank absorbs these pressure waves and maintains the pressure in the pipeline at a constant level, protecting the pipeline.
Eliminate Water Hammer
Water hammer is a phenomenon that occurs when water flow is suddenly stopped or slowed down, causing a shock wave that can damage pipes or equipment. Surge tanks help to eliminate water hammer by providing additional storage for water, allowing the pressure wave to be dissipated safely.
Regulate Flow of Water
Surge tanks are also used to regulate the flow of water to turbines by providing the necessary retarding head of water. The surge tank is located at a higher elevation than the turbines, and water is stored in the tank. When the turbines require more water, water is released from the tank to the turbines, providing the necessary head of water for efficient operation.
Conclusion
In summary, surge tanks are an essential component of pipeline systems used to control pressure variations, eliminate water hammer, and regulate the flow of water to turbines. These tanks provide additional storage capacity to handle rapid changes in pipeline flow, protecting the pipeline and equipment from damage.
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The purpose of surge tank is ________.a)To control the pressure variations due to rapid changes in pipe line flowb)To eliminate water hammer possibilitiesc)To regulate flow of water to turbines by providing necessary retarding head of waterd)All options are correctCorrect answer is option 'D'. Can you explain this answer?
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