Stage enthalpy diagram for degree of reaction = 1D 2 in a turbine and pump.
2.
"' Variation of the degree of reaction with flow coefficient and air angle at rotor entry "'
3.
From the relation for degree of reaction, | | ?2 < ?3 which is also shown in corresponding Figure 7.
4.
Degree of reaction ( "'R "') is an important factor in designing the blades of a turbine, compressors, pumps and other turbo-machinery.
5.
Degree of reaction can be defined as the ratio of pressure energy change in the blades to total energy change of the fluid.
6.
If R = then from the relation of degree of reaction, | | ?2 = ?3 and the velocity triangle ( Figure 4 . ) is symmetric.
7.
Modern steam turbines frequently employ both reaction and impulse in the same unit, typically varying the degree of reaction and impulse from the blade root to its periphery.
8.
If the degree of reaction is zero it means that the energy changes due to the rotor blades is zero, leading to a different turbine design called Pelton Turbine.
9.
The "'pozzolanic activity "'is a measure for the degree of reaction over time or the reaction rate between a pozzolan and Ca 2 + or Ca ( OH ) 2 in the presence of water.
10.
For example, if the degree of reaction is given to be 50 %, that means that half of the total energy change of the fluid is taking place in the rotor blades and the other half is occurring in the stator blades.
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