Scholarlink

<p>This article experimentally evaluates how inlet air mass flow rate affects heat output, gaseous emissions, particulate matter (PM), and the collection efficiency of a four-tube electrostatic precipitator (ESP) installed downstream of an automatic pellet boiler. Measurements were conducted at five fan settings corresponding to inlet air mass flow rates of 89.18–143.64&#xa0;kg·h⁻¹, with the ESP mode (ON/OFF). Increasing air mass flow caused a slight reduction in heat output (from 8.6 to 9.9&#xa0;kW for ESP-OFF and 8.6–10.3&#xa0;kW for ESP-ON) and a strong increase in CO at 10% O₂ (from 609 to 1512&#xa0;mg·m⁻³ for ESP-OFF and 494–1670&#xa0;mg·m⁻³ for ESP-ON), while NOₓ at 10% O₂ remained within a narrow range (128–146&#xa0;mg·m⁻³ for ESP-OFF; 128–145&#xa0;mg·m⁻³ for ESP-ON). The ESP mode (ON/OFF) had no measurable influence on heat output, CO, or NOₓ trends. During ESP-OFF mode, total PM showed a nonlinear dependence on air supply and reached a maximum at fan setting 4 (total PM concentration at 10% O₂ was 21.35–28.77&#xa0;mg·m⁻³). During ESP-ON mode, total PM at 10% O₂ decreased to 2.34–4.85&#xa0;mg·m⁻³, yielding overall collection efficiencies of 81.48–91.24%, with the maximum efficiency (91.24%) at 128.92&#xa0;kg·h⁻¹ (fan setting 4). Quadratic regression captured strong dependencies of heat output on airflow (R² = 0.88–0.98), CO (R² ≈ 1), and NOₓ (R² = 0.93–0.99). The results demonstrate that the four-tube ESP provides high PM reduction (&gt; 80%) under varying air-supply conditions without systematically altering heat output or gaseous emissions trends.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Operation of four-tube electrostatic precipitator during pellet combustion in small-scale heat source under varying inlet air mass flow rate

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年3月17日

查看全文
  • Nikola Čajová Kantová,
  • Alexander Backa,
  • Róbert Cibula,
  • Pavol Belány

摘要

This article experimentally evaluates how inlet air mass flow rate affects heat output, gaseous emissions, particulate matter (PM), and the collection efficiency of a four-tube electrostatic precipitator (ESP) installed downstream of an automatic pellet boiler. Measurements were conducted at five fan settings corresponding to inlet air mass flow rates of 89.18–143.64 kg·h⁻¹, with the ESP mode (ON/OFF). Increasing air mass flow caused a slight reduction in heat output (from 8.6 to 9.9 kW for ESP-OFF and 8.6–10.3 kW for ESP-ON) and a strong increase in CO at 10% O₂ (from 609 to 1512 mg·m⁻³ for ESP-OFF and 494–1670 mg·m⁻³ for ESP-ON), while NOₓ at 10% O₂ remained within a narrow range (128–146 mg·m⁻³ for ESP-OFF; 128–145 mg·m⁻³ for ESP-ON). The ESP mode (ON/OFF) had no measurable influence on heat output, CO, or NOₓ trends. During ESP-OFF mode, total PM showed a nonlinear dependence on air supply and reached a maximum at fan setting 4 (total PM concentration at 10% O₂ was 21.35–28.77 mg·m⁻³). During ESP-ON mode, total PM at 10% O₂ decreased to 2.34–4.85 mg·m⁻³, yielding overall collection efficiencies of 81.48–91.24%, with the maximum efficiency (91.24%) at 128.92 kg·h⁻¹ (fan setting 4). Quadratic regression captured strong dependencies of heat output on airflow (R² = 0.88–0.98), CO (R² ≈ 1), and NOₓ (R² = 0.93–0.99). The results demonstrate that the four-tube ESP provides high PM reduction (> 80%) under varying air-supply conditions without systematically altering heat output or gaseous emissions trends.