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Questions and Answers
What is the definition of 'two-phase flow'?
What is the definition of 'two-phase flow'?
- A mixture of fluid and steam coexisting in a flow, both in gaseous form
- A mixture of fluid and steam coexisting in a flow, in different forms like bubbles or droplets (correct)
- A flow where one phase is condensate and the other phase is dry steam
- A flow where one phase is saturated water and the other phase is superheated steam
How are two-phase flows classified based on the character of the mutual phase flow?
How are two-phase flows classified based on the character of the mutual phase flow?
- By the intensity of interaction
- By the flow pattern (correct)
- By the relative disposition of phases
- By the time character of the processes
Which type of two-phase flow is characterized by a flow pattern consisting of small, distinct packets of one phase in continuous flow of another phase?
Which type of two-phase flow is characterized by a flow pattern consisting of small, distinct packets of one phase in continuous flow of another phase?
- Dispersed-annular flow
- Homogeneous model
- Dispersed flow
- Slug flow (correct)
In two-phase flows, what does 'non-equilibrium' refer to?
In two-phase flows, what does 'non-equilibrium' refer to?
What distinguishes 'stationary' two-phase flows from 'non-stationary'?
What distinguishes 'stationary' two-phase flows from 'non-stationary'?
What is the purpose of the Na3PO4 additive in water cleansing?
What is the purpose of the Na3PO4 additive in water cleansing?
Which corrective additives are commonly used in water treatment to suppress oxygen and carbon dioxide?
Which corrective additives are commonly used in water treatment to suppress oxygen and carbon dioxide?
What is the impact of low hardness in feed water on the Water Cleansing Regime (WCR)?
What is the impact of low hardness in feed water on the Water Cleansing Regime (WCR)?
Which of the following is not a possible solution for water cleansing as mentioned?
Which of the following is not a possible solution for water cleansing as mentioned?
How is scaling removal promoted by adding Trilon B to salt-free water?
How is scaling removal promoted by adding Trilon B to salt-free water?
What determines the allowed thickness of scaling in steam generators?
What determines the allowed thickness of scaling in steam generators?
What parameter is represented by Reynolds number ReV and ReL in the context of two-phase flows?
What parameter is represented by Reynolds number ReV and ReL in the context of two-phase flows?
What does the coefficient X² represent in the context of two-phase flows?
What does the coefficient X² represent in the context of two-phase flows?
Which term accounts for drops due to local resistances in two-phase flows?
Which term accounts for drops due to local resistances in two-phase flows?
What is the purpose of the parameter 'ρ′fin, ρ′in' in equation for drops due to acceleration in two-phase flows?
What is the purpose of the parameter 'ρ′fin, ρ′in' in equation for drops due to acceleration in two-phase flows?
What contributes to the static pressure drop in two-phase flows according to the text?
What contributes to the static pressure drop in two-phase flows according to the text?
In two-phase flows, what does the term 'steam quality' x represent in the equation for drops due to acceleration?
In two-phase flows, what does the term 'steam quality' x represent in the equation for drops due to acceleration?
What is the condition for unambiguous HDC according to the text?
What is the condition for unambiguous HDC according to the text?
What are the consequences of incorrect water chemical regime at NPP SG as per the text?
What are the consequences of incorrect water chemical regime at NPP SG as per the text?
What is the main method suggested in the text to fight thermal maldistribution?
What is the main method suggested in the text to fight thermal maldistribution?
What does medium subcooling to saturation temperature represent in the context provided?
What does medium subcooling to saturation temperature represent in the context provided?
Why is resistance of the evaporation zone Δpev dependent on medium flow rate G?
Why is resistance of the evaporation zone Δpev dependent on medium flow rate G?
What is the purpose of ensuring a correct water chemical regime at NPP SG?
What is the purpose of ensuring a correct water chemical regime at NPP SG?
What is the main method suggested for preventing tube-to-tube temperature imbalance?
What is the main method suggested for preventing tube-to-tube temperature imbalance?
In the context provided, what factor may lead to the transition of some tubes into an impaired heat transfer mode?
In the context provided, what factor may lead to the transition of some tubes into an impaired heat transfer mode?
What type of calculation adjustments are mentioned in the text?
What type of calculation adjustments are mentioned in the text?
To prevent thermal maldistribution, what is suggested regarding balancing headers?
To prevent thermal maldistribution, what is suggested regarding balancing headers?
What is recommended as a method for the prevention of tube-to-tube temperature imbalance?
What is recommended as a method for the prevention of tube-to-tube temperature imbalance?
What may happen if the tube wall temperature exceeds a certain permissible temperature in evaporators?
What may happen if the tube wall temperature exceeds a certain permissible temperature in evaporators?
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