Engineering study 05 / 06
HVAC Zoning Study
An illustrative study of how rooms are grouped onto air handling units by cleanliness grade, product exposure, containment, operating schedule and recirculation strategy, and how that zoning supports the pressure cascade.
This is an engineering study on a generic scenario. It shows how ALVEDA SOLUTIONS reasons through the engineering question; it is not an executed project, and it names no client, location, date, size or measured result.
Study sheet
ES-05- Study type
- Illustrative study
- Sector
- Multi-grade pharmaceutical facility
- Scenario
- Production, laboratory and support areas — generic scenario
- Focus
- Grouping rooms onto air handling units
- Status
- Engineering study — not an executed project
Related services
- 02.06HVAC EngineeringAir systems designed for cleanliness, pressure, temperature and humidity control.
- 02.05Cleanroom Classification & Pressure CascadeRoom classifications, adjacencies and pressure relationships defined as one documented cascade.
- 01.03Basic EngineeringConverting the concept into a coordinated technical basis for detailed design.
Design questions
- 01
Which areas must not share an air handling unit because of containment, product or operating differences?
- 02
Where is recirculation acceptable, and where is once-through air needed?
- 03
How does zoning affect filtration, controls, redundancy and energy use?
Study method
- Step 01
Tabulate each room’s grade, exposure, containment need, schedule and heat and moisture loads.
- Step 02
Group compatible rooms and document the reason for every separation.
- Step 03
Check each group against the pressure cascade and the airlocks between zones.
- Step 04
Record the zoning in AHU schedules and the control philosophy for basic engineering.
What the study establishes
The study demonstrates a documented way to reach AHU zoning decisions. Air volumes, setpoints and equipment sizes are not given because they are project-specific.
Stated as study intent. An engineering study on a generic scenario reports no measured result.
Next step
Planning a pharmaceutical project?
Share the product type, the current stage and the main constraints. We will respond with a proposed scope and next steps.
+20 101 171 1700