1. How to choose efficient air supply vents for ISO 5 clean rooms?

ISO 5 clean room optionsFor efficient air supply outlets , one thing should be clarified first:

The specifications of high-efficiency air supply vents are not determined solely based on the three words 'ISO 5'.

Actual selection requires a combination of:

ISO 5 cleanliness level → Room size → Air flow organization → Design air supply volume → HEPA/ULPA filter → Air outlet specifications → Installation method

Among them, ISO 5 is only one of the clean room design conditions.

Different processes, room sizes, equipment layouts and airflow organization methods will lead to different number, air volume and specifications of the final air supply outlets.

2. Why do ISO 5 clean rooms need to pay attention to efficient air supply vents?

ISO 5 clean rooms need to control suspended particles in the air, so the air entering the clean area usually needs to be filtered with high efficiency.

Common system processes are:

Air treatment equipment → Air duct → High-efficiency air supply outlet → HEPA/ULPA filter → ISO 5 clean area

High-efficiency air supply outlets, as terminal air supply equipment, need to be matched with filters, air ducts and clean room air flow organizations.

Therefore, when selecting high-efficiency air supply outlets for ISO 5 projects, the focus is not to compare different air outlets individually, but to see whether the entire terminal air supply system matches.

3. Should you choose HEPA or ULPA for an ISO 5 clean room?

This needs to be determined based on project design requirements.

HEPA and ULPA belong to different high-efficiency air filter categories, and their filtration efficiency and applicable conditions are different.

In an ISO 5 clean room, the corresponding HEPA or ULPA filter can be selected according to the project design requirements.

It is recommended to confirm when selecting:

• filter efficiency

• Filter rated air volume

• initial resistance

• final resistance

• filter size

• Sealing method

• Usage environment

• Replacement method

Just because the clean room is ISO 5, it does not mean that all projects must use the same filter.

4. How to determine the air volume of ISO 5 high-efficiency air supply outlet?

ISO 5The air volume of the efficient air supply outlet needs to be determined based on the overall design of the clean room.

If the project uses the air change method for preliminary estimation, you can use:

Total air supply volume = room volume × design air exchange times

For example:

Clean room:

• Length: 10m

• Width: 8m

• Height: 3m

• Design air exchange rate: 30 times/h

Room volume:

10 × 8 × 3 = 240m³

Total air supply volume:

240 × 30 = 7200m³/h

If the design air volume of a single high-efficiency air outlet is 500m³/h:

7200 ÷ 500 = 14.4

The actual project needs to be adjusted based on the air outlet layout and air flow organization.

It should be noted that the number of air changes is not a fixed value in ISO 5, and the specific design should be determined based on project conditions and relevant design requirements.

5. Does ISO 5 clean room must use one-way flow?

It cannot be simply assumed that ISO 5 clean rooms must use one-way flow.

The ISO cleanliness level is mainly used to stipulate the cleanliness requirements for suspended particles in the air, and the airflow organization method needs to be determined according to the specific clean room design.

Different regions may use:

• One-way flow

• non-unidirectional flow

• Mixed airflow organization

If the project adopts a one-way flow design, the terminal air supply area, air supply speed, filter arrangement and return air method need to be configured according to the corresponding design.

If non-unidirectional flow is used, the number and layout of the air supply outlets also need to be determined based on the room volume, design air supply volume, and pollution control requirements.

6. What parameters do you need to pay attention to for efficient air supply vents in ISO 5 clean rooms?

It is recommended to establish a complete parameter list during the procurement or design stage:

7. How to choose the size of high-efficiency air supply vents for ISO 5 clean rooms?

The size of high-efficiency air supply openings cannot be determined solely based on the clean room grade.

Usually you need to consider:

Filter size + design air volume + installation space + ceiling module + air flow organization

For example, after the filter specifications are determined, the air supply box needs to match the size of the filter, and a reasonable installation and maintenance structure needs to be reserved.

If you use a modular ceiling, you also need to confirm the size relationship between the air outlet and the ceiling panel.

Therefore, it is recommended to confirm first when making actual selection:

Filter → Air volume → Box → Ceiling installation dimensions

Instead of determining a box size first and then looking for a suitable filter.

8. How to determine the number of ISO 5 high-efficiency air supply outlets?

First, calculate the total design air supply volume of the clean room.

For example:

Clean room design total air supply volume:

10000m³/h

If a single 1000m³/h high-efficiency air supply outlet is used:

10000 ÷ 1000 = 10

If 500m³/h is used:

10000 ÷ 500 = 20

Theoretically, the air volume of a single air outlet is different, and the required quantity is also different.

But the final quantity cannot be determined based on mathematical calculations alone, it also needs to be considered:

• Ceiling arrangement

• Device location

• Operator activity area

• Return air outlet location

• airflow organization

• Filter surface wind speed

• Duct system resistance

9. How to arrange the efficient air supply vents in ISO 5 clean rooms?

The placement of efficient supply air vents should be considered together with the return air system.

The basic logic is:

Air supply → clean area → pollutant control area → return air

For different clean rooms, the specific locations of the air supply vents and return air vents may be different.

In equipment-intensive clean rooms, factors such as equipment height, equipment exhaust, heat sources, and personnel activities also need to be considered.

Therefore, 'even distribution' cannot be simply adopted as a fixed layout method for all ISO 5 clean rooms.

10. How does ISO 5 clean room high-efficiency air supply outlet reduce the risk of bypass leakage?

After the high-efficiency filter is installed, if the seal between the filter and the box is not reasonable, the air may bypass the filter material and enter the clean area.

Therefore, when selecting efficient air supply outlets for ISO 5 projects, you need to pay attention to:

• Filter installation structure

• Sealing method

• compression structure

• Box processing quality

• filter size match

• On-site installation quality

• Post-installation leak detection and verification

Especially for projects that require clean room acceptance, corresponding filter and system tests should be completed according to project requirements.

11. Is it necessary to consider filter resistance when selecting ISO 5 high-efficiency air supply outlets?

need.

High-efficiency filters will create resistance to the air, so when selecting a high-efficiency air supply outlet, you cannot only consider the filtration efficiency of the filter.

Also needs to be combined with:

Design air volume + filter resistance + duct resistance + end resistance + fan static pressure

If the system design air volume is 500m³/h, then it is necessary to confirm the resistance of the filter under this working air volume and whether the system fan can provide the corresponding static pressure.

This is also a parameter that is easily overlooked in the selection of efficient air supply outlets.

12. Can ISO 5 clean rooms use 500m³/h high-efficiency air supply vents?

Project selection can be made, but cannot be judged based on ISO 5 alone.

Assume a clean room:

• Area: 50m²

• Height: 3m

• Design air exchange rate: 30 times/h

Theoretical total air supply volume:

50 × 3 × 30 = 4500m³/h

If a high-efficiency air supply outlet of 500m³/h is used:

4500 ÷ 500 = 9

Then 9 can be used as the preliminary air volume configuration.

If the clean room area, floor height or design air supply conditions change, the required quantity will also change.

Therefore, whether 500m³/h is appropriate needs to be calculated based on the specific project.

13. The complete process of selecting high-efficiency air supply vents for ISO 5 clean rooms

It is recommended to proceed in the following order:

Determine the ISO 5 design requirements → Determine the room size → Determine the air flow organization → Determine the design air supply volume → Determine HEPA/ULPA → Determine the air volume of a single air outlet → Determine the number of air outlets → Determine the air outlet size → Check the air duct and fan → Confirm the installation and maintenance method

This process is more reasonable than searching for a standard specification directly according to 'ISO 5 high-efficiency air supply outlet'.

14. How does Aili Industrial provide efficient air supply vents for ISO 5 clean rooms?

Aili Industry can design the clean room according to the design conditions of the clean room project.Equipped with high-efficiency air supply vents and filters.

When selecting, you can choose from:

Cleanliness level → Room size → Design air volume → Filter → Air supply outlet structure → Ceiling size → Installation and maintenance

Confirm item by item.

Aili Industrial also produces high-efficiency filters, HEPA/ULPA filters, FFU, EFU, fans, motors and control systems, and can combine products according to different clean room system forms.

For ISO 5 clean rooms that use central air conditioning and duct air supply, you can focus on the terminal filtration solution of high-efficiency air supply outlets + HEPA/ULPA; for areas that require modular air supply or equipment-side clean air treatment, you can configure it in combination with FFU, EFU and other equipment.

This allows equipment to be selected based on the actual air handling methods of the project, rather than using one type of equipment for all clean room scenarios.

15. Frequently asked questions about selecting efficient air supply vents for ISO 5 clean rooms

1. What high-efficiency air supply vents are used in ISO 5 clean rooms?

The selection should be based on the design air supply volume, air flow organization, HEPA/ULPA filter specifications, ceiling size and installation method.

2. Is ULPA required for ISO 5 clean rooms?

uncertain. The specific use of HEPA or ULPA needs to be determined based on project design requirements, target cleanliness and process conditions.

3. How much air volume is required for an efficient air supply outlet in an ISO 5 clean room?

There is no uniform fixed value. It needs to be determined based on the total designed air supply volume, number of air outlets and air flow organization of the clean room.

4. Can 500m³/h high-efficiency air supply vents be used in ISO 5 clean rooms?

It can be calculated as an air volume specification, but whether it is suitable needs to be confirmed based on the room area, height, design air supply volume, filter specifications and air outlet layout.

5. Do ISO 5 clean room high-efficiency air supply vents need to be tested?

When a clean room is put into use and accepted, it is usually necessary to verify the cleanliness, air volume, pressure difference, filter integrity and other items according to the requirements of the project and relevant standards. The specific testing items are subject to the engineering requirements.

6. Is it better to have more efficient air supply outlets in an ISO 5 clean room?

no. The number of air outlets needs to match the design air supply volume, filter working conditions and airflow organization.

in conclusion

When selecting high-efficiency air supply vents for ISO 5 clean rooms, you should not only look at the 'ISO 5' level, nor should you choose based solely on the size of the air vents.

It is recommended to focus on confirming:

Clean room size → Air flow organization → Design air supply volume → HEPA/ULPA → Filter resistance → Air volume of a single air outlet → Number of air outlets → Installation method → ​​System verification

For centralized air duct air supply systems, high-efficiency air supply outlets are usually used as terminal filtration and air supply equipment, used in conjunction with HEPA/ULPA filters.

Aili Industrial can select high-efficiency air supply vents and related clean air treatment equipment based on the cleanliness level, design air volume, filter specifications and installation conditions of the project.