Steam Boilers, Engines, Nozzles and Turbines
Relative percentage of heat absorbed through the heat transfer of (i) Furnace water wall (ii) Boiler tank (iii) Superheater (iv) Economizer (v) Air-heater of a typical boiler of 200 MW capacity would be of the order of

7 : 15 : 20 : 10 : 48
20 : 48 : 7 : 15 : 10
48 : 20 : 15 : 7 : 10
10 : 7 : 15 : 20 : 48

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Steam Boilers, Engines, Nozzles and Turbines
The equivalent evaporation is defined as

The amount of water evaporated or steam produced in kg per kg of fuel burnt
The evaporation of 15.653 kg of water per hour from and at 100°C
The ratio of heat actually used in producing the steam to the heat liberated in the furnace
The amount of water evaporated from and at 100°C into dry and saturated steam

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Steam Boilers, Engines, Nozzles and Turbines
Equivalent evaporation of water is the evaporation for a feed water supply at 100°C

Conversion into steam at atmospheric condition
And its corresponding conversion into dry steam at desired boiler pressure
Conversion into steam at the same pressure at which feed water is supplied
And its corresponding conversion into dry saturated steam at 100°C and 1.033 kg/cm²

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