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Focusing on return air filtration, indoor load and circulating air supply needs, fans, coils, filters and control configurations are coordinated and matched.
Aili industrial circulating air handling units are used to filter indoor return air that is allowed to be recycled, complete cooling, heating and other treatments according to project needs, and then return it to the service area through supporting air ducts.
The unit can process return air, or a mixture of return air and treated fresh air, depending on the system design. When selecting the type, it is necessary to clarify the return air status, target air supply status, indoor load, circulating air volume and system resistance, and coordinate the configuration with the fresh air, exhaust air and terminal filtration equipment. Air handling units regulate, distribute and recover air through ducts and are a common system application.
Aili Industrial has motors, fans, air filters, control systems, sheet metal processing and complete machine assembly capabilities. It can check component performance, structural interfaces and operation methods in the same project, providing support for standard selection and non-standard customization.
→ Combination of return air filtration and hot and cold treatment → Circulating air volume is calculated according to system requirements
→ Matching of fan and filter resistance → Support structure and control interface customization
processing tasks |
Selection concerns |
|---|---|
Return air filtration |
Determine filtration configuration based on return air conditions and back-end system requirements |
Handle indoor sensible heat load |
Calculate cooling capacity based on loads such as equipment, personnel, and building envelopes |
Adjust air supply status |
Clarify return air conditions and target supply air temperature, and check humidity treatment as needed |
Provide circulating air supply power |
Check the circulating air volume, internal resistance and external static pressure |
Cooperate with fresh air system |
Clarify the fresh air access location, air condition and control division of labor |
Adapt to load changes |
Determine speed regulation, valve regulation and linkage requirements according to operating mode |
Aili Industrial has motor manufacturing and independent fan R&D and production capabilities. It can determine the fan working point based on the designed circulating air volume, filter and coil resistance, air duct and terminal resistance.
For projects that run for a long time or require time-sharing adjustment, the motor and speed regulation configuration can be communicated based on load changes to check the applicable range under different operating conditions. The specific performance is subject to the selection data.
Aili Industrial can confirm the filter grade, rated air volume, initial resistance, installation seal and replacement direction together with the box structure.
Relying on the air filter manufacturing capabilities, consumable specifications can be checked simultaneously, and filter resistance changes can be taken into account in fan selection to facilitate subsequent operation and maintenance management.
The coil unit of the circulation unit should be selected based on the actual inlet air temperature and humidity, target air supply status, cold water conditions and processing load.
If it is operated under dry conditions, the coil surface temperature and air dew point need to be checked; if condensation exists, corresponding water connection, drainage and insulation structures need to be configured. You cannot judge whether drainage is needed just by the name 'circulation unit'.
According to the size of the computer room, return air path, air supply duct direction and maintenance space, the box size, air inlet and outlet direction, pipe side and maintenance method can be communicated.
Aili Industrial has sheet metal processing and complete machine assembly capabilities, and can implement the installation interface, component extraction space and on-site transportation conditions into the structural plan, supporting original equipment replacement and non-standard projects.
Can communicate start and stop, speed adjustment, supply air or return air temperature adjustment, filter pressure difference prompt and equipment linkage according to project needs.
Aili Industrial has the ability to develop control system software and hardware, and can determine the control logic by combining sensors, regulating valves, fans and external systems. The specific functions and communication interfaces are clarified in the planning stage.
equipment |
Main processing objects |
Key points in selection |
|---|---|---|
Fresh air treatment unit |
Fresh outdoor air |
Fresh air volume, outdoor design conditions and target air supply status |
Circulating air handling unit |
Return air or mixed air as permitted by design |
Circulating air volume, return air status and distributed indoor load |
Terminal filter air supply equipment |
Air sent to the use area |
Filtration requirements, air supply form, air volume and resistance |
Circulation units cannot replace the necessary fresh air supplementation to the system. The project should clearly define the division of fresh air volume, circulating air volume, and cooling and heating loads, and then coordinate the control strategies.
The manufacturing system covers motors, fans, filters, control systems, sheet metal and complete machine assembly. It can simultaneously check air volume and static pressure, filter resistance, box layout and operation mode, reducing matching deviations after components are configured separately.
For the renovation of the original circulation system, the original equipment information, on-site photos and air duct diagrams can be combined to evaluate the equipment size, interface location, filter configuration and control compatibility.
Relying on the R&D and manufacturing cooperation between Suzhou and Guangde, components, processing, assembly and testing can be coordinated around the confirmed plan. Multiple equipment projects can have unified configurations, interface directions and spare parts specifications to facilitate installation, maintenance and management.
The circulating air handling unit can be combined with Aili Industrial'sHEPA/ULPA air filter、high-efficiency air supply vents and other products.Collaborative selection of
useFor the FFU fan filter unit project, it is also necessary to clarify the circulation power and pressure difference distribution to avoid repeated configuration or air volume mismatch.
Parameter items |
Configuration instructions |
Parameter items |
Configuration instructions |
|---|---|---|---|
Design circulating air volume |
Determined according to load and system air supply requirements |
External static pressure |
Determine according to external air path resistance |
Air intake status |
Determine return air or mixed air temperature and humidity |
Target air supply status |
Determined according to service area and system requirements |
Hot and cold processing capabilities |
Calculated according to design conditions |
Cold and heat source conditions |
Confirm water temperature, flow or other energy parameters |
Filter configuration |
Select according to return air and back-end system requirements |
Fans and motors |
Match according to working point and speed regulation requirements |
Cabinet size |
Determine based on components and installation space |
Air inlet and outlet methods |
Determine based on return air path and air duct interface |
Drainage and insulation |
Determined according to coil operating conditions |
Control method |
Configuration according to load changes and linkage requirements |
Specific air volume, power, cooling heat, noise and size are subject to the confirmed selection data.
Application scenarios |
Main needs |
|---|---|
Electronics and precision manufacturing workshop |
Return air filtration, indoor load treatment and circulating air supply |
Clean room supporting system |
Coordinated configuration with fresh air and terminal filtration equipment |
Precision optics and instrument production area |
Temperature treatment, filtration and operation regulation |
Industrial plant air conditioning renovation |
Adapt to original air ducts, cold and heat sources and control conditions |
The circulation unit mainly handles return air or the mixed air allowed by the design; the fresh air unit mainly handles outdoor air. The inlet air conditions, processing loads and design air volumes of the two are different, and they need to be selected separately.
The equipment can be configured according to return air conditions, but the fresh air and exhaust air supplement required for the entire service area should be determined by the system design and cannot be replaced by air circulation alone.
It needs to be judged based on process pollutants, cross-contamination control and project requirements. Air containing pollutants that are not suitable for reuse should be handled according to the corresponding system design.
Not equivalent. Circulating air handling units usually include fans and corresponding filtration, heat exchange and other units; dry coils are heat exchange components used in dry working conditions, and their specific functions are different from the air circulation power.
It is also necessary to check the static pressure, hot and cold treatment capacity, air inlet and outlet status, filter resistance, interfaces, power supply and control methods to confirm that the whole machine matches the existing system.
The configuration can be jointly confirmed based on project requirements, and the technical parameters and scope of supply can be clarified by combining the R&D and manufacturing capabilities of fans, motors, filters, structures and control systems.
Provide circulating air volume, external static pressure, return air status, target air supply status, cold and heat sources, filtration requirements and installation dimensions to facilitate further determination of equipment configuration. If you already have fresh air system or terminal equipment information, you can submit it for verification simultaneously.
Contact Aili Industrial immediately to obtain product information and selection support for circulating air handling units.
→ Submit circulating air volume and load requirements → Consult return air filtration and cooling configuration
→ Communicate about fresh air and terminal equipment → Learn about non-standard customization and batch project support
Aili Industry - From motors, fans and filters to sheet metal, control and complete machine assembly, it provides collaborative manufacturing and technical support for industrial and clean room circulating air treatment projects.
