18 Questions
What is the main disadvantage of using a vertical tube evaporator for thermolabile solutions?
Repetitive contact with a hot surface via the influence of central down take
Why is a basket tube evaporator unable to concentrate solutions effectively?
Presence of narrow tubes between two tube sheets
What differentiates the operation of a basket tube evaporator from a vertical tube evaporator?
Movement of solution from bottom to top inside tubes for heat transfer
Why is a vertical tube evaporator considered more efficient in terms of heat transfer compared to a basket tube evaporator?
Continuous convection currents enhancing heat transfer
Which feature of a long tube evaporator prevents particles from moving down in the narrow tubes?
High uprising velocity of molecules adjacent to the tubes
What characteristic makes basket tube evaporators unsuitable for use with viscous solutions?
Repetitive contact with hot surface via central down take
What type of solutions is the horizontal tube evaporator used for?
Non-viscous solutions that do not deposit crystals
Why is the horizontal tube evaporator considered inefficient?
Low evaporation rate due to the cutting of convection current by horizontal tubes
What type of solutions cannot be processed using a horizontal tube evaporator?
Viscous solutions and thermolabile materials
What is a notable advantage of a horizontal tube evaporator in terms of cost?
Low cost per square meter of heating surface
Why can't a horizontal tube evaporator be used for concentrating viscous solutions?
Continuous cutting of convection current by horizontal tubes
How does heat transfer occur in a vertical tube evaporator?
By natural convection only
Which type of evaporator allows the basket to be removed for cleaning, repairing, and maintenance?
Basket Tube Evaporator
What is a disadvantage of using the Basket Tube Evaporator?
Repetitive contact with hot surfaces
How does heating in the Long Tube Evaporator lead to bubble formation?
Small air bubbles form and increase in number and size over time
Why can't the Basket Tube Evaporator be used for thermolabile solutions?
Due to repetitive contact with hot surfaces
What is the advantage of using a Long Tube Evaporator?
Reduced entrainment
What characteristic prevents the Basket Tube Evaporator from being used for thermolabile solutions?
Continuous contact with hot surfaces
Learn about the operation and advantages of a Vertical Tube Evaporator, where molecules are heated up causing a reduction in density and promoting upward movement. Explore how the design prevents particles from moving down in narrow tubes.
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