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Electrostatic Precipitator (ESP) Efficiency Calculator engineering
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Electrostatic Precipitator (ESP) Efficiency Calculator

Calculate industrial electrostatic precipitator collection efficiency, required Specific Collection Area (SCA), plate surface area, and migration velocity.

Flue Gas & Target Capture

Typical: 0.20-0.45 ft/s for coal ash, cement, biomass.

Precipitator Sizing Results

Required Collecting Plate Area
-- sq ft
-- m² collecting plate area
Specific Area (SCA)
--
ft² / 1,000 ACFM
Outlet Dust Loading
-- gr/ACF
-- mg/Nm³
Penetration Rate (1 - η): --%
Corona Power Estimate: -- kW T-R power
The classic Deutsch-Anderson equation governs ESP sizing: increasing collection efficiency from 99.0% to 99.9% requires doubling the total plate collecting area.

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Frequently Asked Questions

What is the Deutsch-Anderson equation and its limitations?

The Deutsch-Anderson equation (η = 1 - exp(-A·we / Q)) is the fundamental design relationship for electrostatic precipitators. It assumes completely uniform gas velocity and infinite particle re-mixing. Real-world precipitators experience sneakage and rapping re-entrainment, often requiring a Modified Deutsch (Matts-Ohnfeldt) exponent of 0.5.

What determines the particle migration velocity (we)?

Migration velocity represents the lateral speed of charged dust particles drifting toward the grounded collection plates. It depends on particle diameter, electric field strength (kV/cm), gas viscosity, and ash electrical resistivity. High-resistivity ash (>10¹⁰ ohm-cm) causes back-corona discharge, slashing migration velocity.

What is Specific Collection Area (SCA)?

Specific Collection Area is the ratio of total grounded collecting plate area to gas volumetric flow rate, expressed as ft² per 1,000 ACFM. Modern utility coal boilers and cement kilns typically require SCAs of 350 to 550 ft²/kCFM to meet strict sub-15 mg/Nm³ particulate emission limits.