Evaluation of a proposed area equation for improved exothermic process control

Area of Science:

• Engineering
• Environmental Science
• Industrial Hygiene

Background:

• Ventilation engineering for manufacturing processes has evolved since Hemeon's 1955 work.
• Refined heat transfer and meteorological theories are crucial for modern engineering control design.

Purpose of the Study:

• To develop a new equation for estimating buoyant plume area (A).
• To compare the accuracy of the proposed equation against existing ACGIH and Hemeon models.

Main Methods:

• Developed a theoretical equation for buoyant plume area (A).
• Collected laboratory data on plume velocity and area using a thermal anemometer and scale-model exothermic process.
• Statistically compared laboratory data with proposed, ACGIH, and Hemeon equations using t-tests or Wilcoxon signed-rank tests.

Main Results:

• The proposed equation yielded results not significantly different from laboratory data.
• ACGIH and Hemeon equations provided significantly lower plume area values compared to laboratory data.
• The proposed equation demonstrated higher accuracy than ACGIH and Hemeon equations within the investigated parameter range.

Conclusions:

• The proposed buoyant plume area equation is more accurate than current ACGIH and Hemeon recommendations.
• Accurate plume area estimation is vital for effective exothermic process control.
• Further validation of the proposed equation across a wider range of parameters is warranted.