The following parameters need to be measured, as applicable for the computation of boiler efficiency and performance.

a)     Flue gas analysis

        1.Percentage of CO2 or O2 in flue gas

        2.Percentage of CO in flue gas

        3.Temperature of flue gas

b)     Flow meter measurements for

        1.Fuel

        2.Steam

        3.Feed water

        4.Condensate water

        5.Combustion air

c)     Temperature measurements for

        1.Flue gas

        2.Steam

        3.Makeup water

        4.Condensate return

        5.Combustion air

        6.Fuel

        7.Boiler feed water

d)     Pressure measurements for

        1.Steam

        2.Fuel

        3.Combustion air, both primary and secondary

        4.Draft

e)     Water condition

        1.Total dissolved solids (TDS)

        2.pH

        3.Blow down rate and quantity

The various parameters that were discussed above can be measured with the instruments that are given in Table 1.1.