Online economiser efficiency calculator

 

Economiser efficiency is calculated as below.

ηEco. = (Economiser outlet feed water temperature Two-Economiser inlet feed water temperature Twi)  X 100 / (Economiser inlet flue gas temperature Tfi- Economiser inlet feed water temperature Twi)

Example:

Calculate the economiser effectiveness, whose feed water inlet & outlet temperatures are 150 Deg C & 220 Deg C respectively & flue gas inlet & outlet temperatures 385 deg C & 215 deg c respectively.

 Solution:

 Twi = 150 deg C

Two = 220 deg C

Tfi = 385 deg C

Tfo = 215 deg C

ηEco = (Two-Twi) X 100 / (Tfi-Twi)

ηEco = (220-150 ) X 100 / (385-150)

ηEco= 29.78%

Boiler Economiser Efficiency Calculator

Enter all temperatures in degree Celsius (°C)

Feedwater Inlet Temperature (T_w,in) Feedwater Outlet Temperature (T_w,out) Flue Gas Inlet Temperature (T_g,in) Flue Gas Outlet Temperature (T_g,out)

Results

Temperature Rise in Water (ΔT_w): °C

Temperature Drop in Flue Gas (ΔT_g): °C

Economiser Efficiency: %

Formula Used:
Efficiency = (T_w,out − T_w,in) / (T_g,in − T_g,out) × 100