Electrostatic precipitator design should consider about efficiency because it determine overall efficiency of power plant. There are some factors affecting the efficiency of electrostatic precipitator as follow:
- The amount of dust collector plates
Amount of plates and surface area of collector plate can affect the magnitude of desired efficiency. The more number of plates and larger area of collector plates will make higher efficiency which can be obtained.
- Velocity of flue gas
Increased flow velocity of flue gas which is sucked by Induced Draft (ID) fan may lead dust are not ionized by the rod electrodes perfectly. Furthermore dust particles are not attached on collector plates. If velocity of flue gas is too high will make electrostatic precipitator difficult to catch dust particle and finally decrease electrostatic efficiency.
Changes of temperature in electrostatic precipitator can affect changes in efficiency. If temperature in electrostatic precipitator decrease can lead dust will be moisture and dust particle will be attached permanently on collector plates and difficult to clean it. Thermocouple is installed in electrostatic precipitator to measure temperature in this equipment.
The selection process of fuel for steam boiler combustion is very important, besides the economic aspect also concern about resulted efficiency. The fuel is commonly used is coal or oil palm shell. The amount of fuel which is used depends on the load generated and calorie content of fuel.