Move from room air-change requirements to equivalent duct size, fan power, and a sensible cooling-load screen for industrial HVAC planning.
Use as a checklist, not an automated design workflow. Complete and verify each calculation independently. Only explicit carry-forward links move a compatible value; all other inputs remain your responsibility.
What this workflow covers
Move from room air-change requirements to equivalent duct size, fan power, and a sensible cooling-load screen for industrial HVAC planning.
This 4-step checklist is intended for hvac engineer. Confirm each linked calculator's units, formula, assumptions and operating limits before using the result in a project decision.
Checklist progress0 of 4 steps checked
Sequence Execution
1
Factory Air Exchange & Ventilation
Scope-limited calculation
Calculate required ventilation airflow (CFM or m³/hr) based on building volume and required Air Changes per Hour (ACH).
WORKFLOW INSTRUCTION:Estimate required room airflow from measured volume and the selected air-change target; validate contaminant and heat-removal criteria separately.
2
Duct Diameter from Airflow & Velocity
Scope-limited calculation
Estimate circular duct diameter and cross-sectional area from airflow and a target air velocity.
WORKFLOW INSTRUCTION:Convert the airflow duty and target velocity into an equivalent circular duct diameter and area.
3
Fan Power from Airflow & Static Pressure
Scope-limited calculation
Estimate fan shaft input power from airflow, static pressure, and fan efficiency.
WORKFLOW INSTRUCTION:Estimate fan input power from airflow, total static pressure, and fan/drive efficiency at the intended duty point.
4
Airflow Sensible Cooling Load
Scope-limited calculation
Estimate sensible cooling capacity from air volume flow, air density, specific heat, and temperature difference.
WORKFLOW INSTRUCTION:Screen sensible cooling capacity from air mass flow and dry-bulb temperature difference; add latent and envelope loads before equipment selection.