The turbulence consideration in predicting efficiency of electrostatic precipitation for ultrafine aerosols from small-scale biomass combustion

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27650%2F22%3A10248661" target="_blank" >RIV/61989100:27650/22:10248661 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0263224121013026?via%3Dihub#b0105" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0263224121013026?via%3Dihub#b0105</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.measurement.2021.110412" target="_blank" >10.1016/j.measurement.2021.110412</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The turbulence consideration in predicting efficiency of electrostatic precipitation for ultrafine aerosols from small-scale biomass combustion

Popis výsledku v původním jazyce

This work investigates the efficiency of electrostatic precipitation for ultrafine particulate matter (PM) emissions from small-scale heating units with solid fuel combustion. The removal efficiency for particles smaller than 50 nm was of research interest. The effect of electric parameters and operation conditions of precipitation was studied. Some appropriate models considering the impact of turbulent diffusion have been used to predict the efficiency of a specific electrostatic precipitator (ESP). The electric field in studied ESP was intensified from 1.8 x 105 V/m to 2.8 x 105 V/m, and Nt-product (the product of number concentration of ions and charging time) was varied from 1.1 x 1014 ions x s/m3 to 7.1 x 1014 ions x s/m3. The prediction correctness is considered by comparing to experimental measurements carried out at the ESP used to control emissions from a 160-kW boiler. The changes in number particle concentration were measured with two technics simultaneously. It was found that an increase in field strength in mentioned range affects the ESP removal efficiency strongly and evenly. In contrast, the effect of growing Nt-product has a limit on precipitating efficiency of 4 x 1014 ions x s/m3. The results of the present work could be helpful in the practical engineering of electrostatic precipitation. (C) 2021 Elsevier Ltd

Název v anglickém jazyce

The turbulence consideration in predicting efficiency of electrostatic precipitation for ultrafine aerosols from small-scale biomass combustion

Popis výsledku anglicky

This work investigates the efficiency of electrostatic precipitation for ultrafine particulate matter (PM) emissions from small-scale heating units with solid fuel combustion. The removal efficiency for particles smaller than 50 nm was of research interest. The effect of electric parameters and operation conditions of precipitation was studied. Some appropriate models considering the impact of turbulent diffusion have been used to predict the efficiency of a specific electrostatic precipitator (ESP). The electric field in studied ESP was intensified from 1.8 x 105 V/m to 2.8 x 105 V/m, and Nt-product (the product of number concentration of ions and charging time) was varied from 1.1 x 1014 ions x s/m3 to 7.1 x 1014 ions x s/m3. The prediction correctness is considered by comparing to experimental measurements carried out at the ESP used to control emissions from a 160-kW boiler. The changes in number particle concentration were measured with two technics simultaneously. It was found that an increase in field strength in mentioned range affects the ESP removal efficiency strongly and evenly. In contrast, the effect of growing Nt-product has a limit on precipitating efficiency of 4 x 1014 ions x s/m3. The results of the present work could be helpful in the practical engineering of electrostatic precipitation. (C) 2021 Elsevier Ltd

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20704 - Energy and fuels

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Measurement

ISSN

0263-2241

e-ISSN

1873-412X

Svazek periodika

188

Číslo periodika v rámci svazku

January 2022

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

nestrankovano

Kód UT WoS článku

000742844600008

EID výsledku v databázi Scopus

2-s2.0-85120505326