Conduction, convection and radiation are three forms of what?
Mass transfer
Drying
Heat transfer
Pocket ventilation
Multi cylinder drying uses what technique for water removal?
Infra red
Contact
Air impingement
Microwave
The drying of paper can be divided into how many stages?
3
4
5
6
What do we call the point at which the sheet temperature rises and the evaporation rate falls?
Critical point
Dry point
End point
Static point
As the machine speed increases from zero to 350 m per minute, the condensate inside a drying cylinder is in one of four phases. Which is phase 3?
Puddleing
Climbing puddle
Rimming
Cascading
Syphons, (sometimes known as straws), are used to remove condensate from the inside of drying cylinders. What other equipment can also be used?
Pipes
Scoops
Spades
Trowels
What name do we give to the system of reusing steam, where blow-through steam from one section is fed into the next section?
Economiser
Recycling
Flow forward
Cascade
What is the major cause of sheet flutter?
Dryer fabric permeability
Machine width
Cylinder diameter
Pocket ventillation units
What name is given to the technique of using ONE dryer fabric rather than two in a conventional two-tier drying cylinder system?
Uniflow
Unifabric
Pocketless
Slalom
Yankee and MG cylinders should never be left stationary or they will deform under their own weight. How do we describe this technique for slowly turning the cylinder?