Weekly topic: 5 wealth points for those who answer correctly, 2 wealth points for participation； Question 99
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The weekly topic for the advanced version: let’s rush to complete 100 questions – everyone is encouraged to participate! Question: In polymer processing, why is a section of converging pipe typically used to connect pipes with varying diameters? (For reference only) Answer: Avoiding the existence of any dead zones reduces the decomposition of polymers due to prolonged retention; it also helps to minimize the overall pressure drop caused by intense disturbances during the flow process, thereby reducing energy consumption, minimizing flow defects, and improving product quality as well as equipment production capacity.
The main purpose is to eliminate any dead zones, thereby reducing the decomposition of the polymer that occurs due to its prolonged presence there. It also helps to reduce the overall pressure drop caused by intense disturbances during the flow process, thus lowering energy consumption, minimizing flow defects, and improving product quality as well as the production capacity of the equipment
It’s probably due to considerations of connection convenience and strength
Avoid dead zones, reduce polymer degradation, lower energy consumption, and improve product quality and equipment production capacity.
In polymer processing, why is a section of converging pipe typically used to connect pipes with varying diameters? It prevents the formation of any dead zones, reduces the decomposition of polymers due to prolonged exposure, helps to lower the overall pressure drop caused by intense disturbances during the flow process, reduces energy consumption, minimizes flow defects, and improves product quality as well as the production capacity of the equipment.
Answer: It prevents the formation of any dead zones, reduces the decomposition of polymers due to prolonged exposure, helps to lower the overall pressure drop caused by intense disturbances during the flow process, reduces energy consumption, minimizes flow defects, and improves product quality as well as the production capacity of the equipment.
It prevents the formation of any dead zones, reduces the decomposition of polymers due to prolonged exposure, helps to lower the overall pressure drop caused by intense disturbances during the flow process, reduces energy consumption, minimizes flow defects, and improves product quality as well as the production capacity of the equipment.
Answer: It prevents the formation of any dead zones, reduces the decomposition of polymers due to prolonged retention, helps to lower the overall pressure drop caused by intense disturbances during the flow process, reduces energy consumption, minimizes flow defects, and improves product quality as well as the production capacity of the equipment.
Answer: It prevents the formation of any dead zones, reduces the decomposition of polymers caused by prolonged retention, helps to lower the overall pressure drop resulting from intense disturbances during the flow process, reduces energy consumption, minimizes flow defects, and improves product quality as well as the production capacity of the equipment.
In the derivation, it is assumed that the length L of the capillary is infinitely long; in reality, it is finite. As the fluid flows through the inlet, its velocity increases as it moves from the larger opening to the smaller one, and the flow lines converge. Therefore, when the material is forced into the capillary through the inlet, viscous frictional energy is dissipated between different velocity layers. On the other hand, as the fluid flows from the larger opening to the smaller one, a velocity gradient is created in the flow direction, resulting in elastic deformation, which also consumes energy. These two losses of energy cause the pressure drop at the inlet of the capillary to not reflect the true pressure drop. If there is no inlet effect, the shear stress acting on the long L-tube is lower than that with an inlet effect; therefore, the pressure drop caused by this inlet effect must be deducted.
In polymer processing, why is a section of converging pipe typically used to connect pipes with varying diameters? Answer: It prevents the formation of any dead zones, reduces the decomposition of polymers due to prolonged exposure, helps to lower the overall pressure drop caused by intense disturbances during the flow process, reduces energy consumption, minimizes flow defects, and improves product quality as well as the production capacity of the equipment.