How to choose H13 filter when configuring EFU? Matching method of efficiency, resistance and rated air volume
Direct answer: When EFU configures the H13 filter, it must first clarify the efficiency standards and detection methods used in the project, and secondly check the resistance of the filter under the target air volume. Filters with the same efficiency level may have different resistance and dust holding characteristics due to different filter materials, folding numbers, effective areas and structures.
Confirm efficiency requirements and detection caliber
Technical documents should state the efficiency level, corresponding standards and necessary testing requirements, and avoid just writing 'high efficiency'. If the project has requirements for unit-by-unit scanning for leak detection, factory reports or on-site verification, these should be clarified during the procurement stage.
Check filter against target air volume
The rated air volume of the filter should cover the EFU working air volume. If the air volume is operated higher than the applicable air volume for a long time, the surface wind speed and resistance may increase; if the area is too large, the box size may be increased.
Leave the initial resistance and final resistance to the fan selection
The initial resistance affects the working point of the new machine, and the final resistance affects the ability to maintain air volume after a period of use. The fan and speed control system should retain a reasonable margin within the target resistance range.
Size and sealing cannot be ignored
Check the overall dimensions, thickness, frame, gasket position, pressing method and installation direction. Bypass air leakage will not pass through the filter material, so the sealing inspection of the whole machine is as important as the efficiency of the filter material.
Determine replacement method based on maintenance conditions
When the space at the equipment end is limited, you should confirm which direction the filter is taken out from, whether the fan or equipment guard needs to be removed, and how to check the sealing and recovery parameters after replacement.
FAQ
Can the H13 filter replace the original H14 filter?
Cannot replace by size only. Efficiency, resistance and process requirements all need to be re-confirmed.
Is the lower the H13 filter resistance, the better?
Low resistance is beneficial to air volume and energy consumption, but it must also meet efficiency, strength and usage requirements.
Do filters have to be replaced on a fixed monthly basis when they expire?
A more reasonable judgment should be based on pressure difference, air volume, cleanliness, operating time and environment.
Aili Industry provides EFU complete machines and core components.
The operating effect of the EFU depends on the matching between the box structure, fan, motor, control system and air filter. Aili Industries focuses on the equipment-end clean air supply needs and carries out R&D and production of EFU complete machines and related components, which can be configured according to equipment space, target air volume, system static pressure, filtration efficiency and control methods.
For equipment with compact structure, limited installation height or requiring special interfaces, the EFU dimensions, air inlet conditions, air supply area, maintenance direction and electrical interfaces can be confirmed based on the equipment drawings, and the air volume, noise and operating status can be checked through prototype testing to determine a unified configuration for subsequent mass production.
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Conclusion: H13 is a filtration efficiency level, which does not mean that any H13 filter can be directly replaced. EFU selection also needs to match the size, rated air volume, resistance, thickness, sealing method and project detection method.
