Electrostatic Precipitator Calculator
Calculate ESP collection efficiency using Deutsch-Anderson equation. Solve for efficiency, drift velocity, area, or gas flow rate.
What is the Electrostatic Precipitator Calculator?
The Electrostatic Precipitator Calculator is a free online tool for designing and analyzing ESP systems using the Deutsch-Anderson equation. It calculates collection efficiency based on electrode area, particle drift velocity, and gas flow rate. You can also solve for drift velocity, electrode area, or gas flow rate.
This calculator is essential for environmental engineers, power plant operators, cement manufacturers, and industrial hygienists working on particulate emission control systems.
How to Use the ESP Design Calculator
Select what you want to solve for from the dropdown menu. Enter the known parameters, and the calculator instantly computes the result with a detailed step-by-step breakdown of the Deutsch-Anderson formula.
Understanding the Deutsch-Anderson Equation
The Deutsch-Anderson equation predicts ESP collection efficiency: R = 1 - e^(-A · Vd / Q). R is collection efficiency (0 to 1), A is total collecting electrode area (m²), Vd is particle drift velocity (m/s), and Q is gas flow rate (m³/s).
Applications of Electrostatic Precipitators
- Coal-fired power plants: removing fly ash from flue gas
- Cement manufacturing: controlling kiln dust emissions
- Steel mills: capturing iron oxide fume from furnaces
- Pulp and paper: collecting sodium sulfate fume
- Oil refining: removing catalyst fines from exhaust
Frequently Asked Questions
How efficient are electrostatic precipitators?
Modern ESPs routinely achieve 99-99.9% collection efficiency for particulate matter. Large coal-fired power plants may use ESPs with collecting areas exceeding 10,000 m² to meet stringent emissions standards.
What is the Deutsch-Anderson equation?
The Deutsch-Anderson equation R = 1 - e^(-A·Vd/Q) predicts ESP collection efficiency as an exponential function of electrode area, particle drift velocity, and gas flow rate. It was independently derived by Walther Deutsch (1922) and Evald Anderson (1924).
What determines drift velocity in an ESP?
Drift velocity depends on electric field strength, particle size, particle charge, and gas viscosity. Larger particles and stronger electric fields produce higher drift velocities. Typical values range from 0.03 m/s for fine submicron particles to 0.2 m/s for coarse fly ash.
How do you size an ESP?
Start with the required efficiency and gas flow rate. Estimate the drift velocity for the specific dust type. Then calculate electrode area using A = -Q × ln(1 - R) / Vd. Add 10-20% safety margin for non-ideal conditions.
What is the difference between dry and wet ESPs?
Dry ESPs collect particles on dry plates and remove them by rapping. Wet ESPs use a water film on collecting surfaces, preventing re-entrainment and capturing acid gases and fine mists. Wet ESPs are preferred for sticky or high-resistivity particles.
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