1.  1% excess air reduction will increase 0.6% efficiency of combustion in boiler.

2.    Feed water and Blow-down TDS of a boiler should be lesser than 100 ppm and 3500 ppm respectively.

3.    20 degree Celsius rise in inlet air of boiler increases thermal efficiency by 1%.

4.    Pressure drop of steam should be below 0.1 bar per 50m of transmission

5.    Every 22°C increase in temperature in boiler reduces thermal efficiency by 1%.

6.    Every 3mm soot in boiler increases fuel consumption by 2.5%

7.    Install all steam pipes with a fall of 1% [1:100] in direction of steam flow towards steam traps

8.    4 degree Celsius rise in air compressor inlet air temperature increases the energy consumption by 1%

9.    Increasing pipe diameter from 1 ½” to 2” reduces Pressure Drop by 75% of air compressor.

10.  Design the header size of compressor to maintain air velocity below 6 m/sec and a maximum pressure drop of 2 psi in the compressor room.

11.  Design the piping to maintain air velocity below 9 m/sec and a maximum pressure drop of 3 psi to the farthest point of use from air compressor.

12.  A 3-phase induction motor consumes energy equal to its purchase price in less than 2 months.

13.  An imbalanced voltage can de-rate motor by 3 – 5%

14.  5% or more voltage drop observed at motor input, while motor shifts to high load, indicates undersized cables

15.  Star connection reduces the voltage across the motor windings to 58% of the Delta connection

16.  For every 10°C increase in motor operating temperature over recommended peak, the motor life is estimated to be reduced by 50%.