Will ULPA air supply affect temperature and humidity stability? System coordination and working condition verification

Changes in the air supply of the ULPA filter may affect the temperature and humidity distribution and control response, but the ULPA particle filtration itself cannot undertake complete temperature and humidity treatment. It needs to be coordinated with air conditioning, return air, heat load and control strategy. The relationship between air supply and temperature and humidity is easily misunderstood: Some people think that if the ULPA filter is replaced, the temperature and humidity control will become worse; others think that ULPA can improve the temperature and humidity. Neither understanding is accurate. ULPA is responsible for particle filtration, and temperature and humidity are handled by the air conditioning system. The way ULPA affects temperature and humidity is indirect - changes in air supply volume change the air flow distribution and heat exchange conditions in the space, thereby affecting the temperature and humidity distribution. Aili Industry isFFU fan filter unit andIn the matching of the fan filter unit at the EFU equipment end , the air supply parameters and operation control are checked in the same plan.The FFU computer group control system records the air volume and operating status of the zones. When the air supply changes, the impact on temperature and humidity can be evaluated based on actual measured data.

1. Differentiate processing functions: filter tube particles, air conditioning tube temperature and humidity

The filter is responsible for particle control, and cooling, heating, dehumidification and humidification are completed by the corresponding system. Replacing the filter element cannot be regarded as a complete measure for temperature and humidity rectification.

ULPA's efficiency index is based on particle size and does not involve temperature and humidity. Room temperature and humidity are controlled by the surface cooler, heater, humidifier and dehumidification equipment of the air conditioning system. Replacing the ULPA filter will not directly change the supply air temperature and humidity, but it will affect the air supply volume through resistance changes, thereby affecting the heat exchange and humidity distribution in the space. Aili Industry isIn the HEPA/ULPA filter selection, it is specified that the filter only assumes the particle control function, and the temperature and humidity treatment is handled by the project air conditioning system.FFU fan filter unit package. Confirm the air supply parameters and the interface of the air conditioning system separately in the The relationship between levels and filtering requirements can be found inISO cleanliness level comparison。

2. Check the air volume and heat load: changes in air supply will change local conditions

Changes in filter element resistance, fan speed regulation and equipment heating will affect local conditions, and measurements should cover process points and representative periods.

The impact of changes in air supply volume on temperature and humidity depends on space heat load and air flow organization. When the air supply volume decreases, the heat and moisture in the space are taken away slower, and the local temperature and humidity may rise; when the air supply volume increases, the cooling and dehumidification effects may be enhanced, but it may also cause local overcooling. Measurements should cover process points and representative periods, rather than just looking at the average room temperature and humidity. Aili Industry isThe FFU fan filter unit package supports EC DC speed regulation, and the air supply volume can be adjusted according to actual needs.The FFU computer group control system records partition air volume and equipment operating status. The impact of air supply changes on temperature and humidity can be evaluated based on actual measured data. The relationship between air volume and heat load can be referred toHEPA FAQs and Selection Guide。

3. Joint debugging and control: air return, air conditioning settings and sensors should be looked at together

Confirm the air supply, air conditioning settings and related sensors to prevent different control links from interfering with each other. Check stability and condensation risk after adjustment.

Temperature and humidity control involves air supply systems, return air systems, air conditioning units and multiple sensors. After the ULPA is replaced, if you only adjust the air supply volume without adjusting the air conditioner settings, or only adjust the air conditioner without considering changes in air supply, the control links may interfere with each other. Aili Industry isIn scenarios related to temperature and humidity at the EFU equipment end fan filter unit , check the air supply parameters according to the equipment operating mode and local heat load.The FFU computer group control system records the air supply and return parameters and operating status. During joint debugging, the control response can be confirmed based on the data of each link. Please refer to the key points of temperature and humidity joint debugging.ULPA ultra-high efficiency filter FAQ and selection guide。

4. After upgrading ULPA, when the air volume decreases and local heat dissipation becomes worse, the air supply and air conditioning should be rematched.

When the air volume decreases and local heat dissipation becomes worse after upgrading ULPA, the air supply and air conditioner should be re-matched instead of just lowering the temperature setting. Just lowering the temperature setting may increase the load on the air conditioner, but local heat will still not be discharged, and the problem of uneven temperature distribution will still exist.

Aili Industry isIn the non-standard ULPA filter upgrade project, the impact of air volume is evaluated based on the resistance change after the upgrade.The FFU fan filter unit can compensate for the air volume through speed adjustment.The FFU computer group control system records the air volume and temperature and humidity data before and after the upgrade, making it easier to determine whether there is insufficient air volume or an air conditioning setting problem;Tank seal ULPA filter andThe structural differences of the partition-less ULPA ultra-high-efficiency filter are also considered in the upgrade plan. Please refer to the method for temperature and humidity adjustment after the upgrade.HEPA FAQs and Selection Guide。

5. Related questions and answers

Can humidity be reduced with ULPA?
It is not intended to be used as a dehumidification device; humidity must be controlled by an appropriate air handling system.

If the temperature and humidity fluctuate after replacing the ULPA, is it definitely a filter problem?
uncertain. Changes in air supply volume, air conditioning setting adjustments and sensor status may affect temperature and humidity, and should be investigated according to system links.

After the air supply volume drops, can lowering the temperature setting solve the problem?
uncertain. When local heat cannot be discharged, lowering the temperature setting may increase the air conditioning load, but the improvement will be limited. The air supply and air conditioning should be rematched.

6. Related articles

ULPA ultra-high efficiency filter FAQ and selection guide

FFU computer group control system

No partition ULPA ultra high efficiency filter

HEPA FAQs and Selection Guide

7. Key points for selection and acceptance inspection

8. Product matching and technical support from Aili Industrial

Aili Industry isFFU fan filter unit andIn the matching of the fan filter unit at the EFU equipment end , the air supply parameters and operation control are checked in the same plan.The FFU computer group control system records the air volume and operating status of the zones. When the air supply changes, the impact on temperature and humidity can be evaluated based on actual measured data.In HEPA/ULPA filter selection, it is clear that the filter only has the function of particle control.The air supply parameters and air conditioning system interface in the FFU fan filter unit package are confirmed separately, and EC DC speed regulation is supported to adjust the air supply volume according to actual needs;the EFU equipment end fan filter unit equipment end, check the air supply parameters according to the equipment operating mode and local heat load.In the temperature and humidity related scenarios of The FFU computer group control system records the air supply and return parameters and operating status to facilitate joint debugging.The non-standard ULPA filter upgrade project evaluates the impact of air volume based on the resistance change after the upgrade.The FFU fan filter unit can compensate for the air volume through speed adjustment.The FFU computer group control system records air volume and temperature and humidity data before and after the upgrade.Tank seal ULPA filter andThe structural differences of the partition-less ULPA ultra-high-efficiency filter are also considered in the upgrade plan. Provide process objectives, installation drawings, operating conditions and acceptance requirements, and can further communicate ULPA standard specifications, non-standard interfaces, samples and batch matching. The specific parameters and test range are based on the confirmed model and technical documents.