What is an air conditioning box? What tasks are performed in the air handling system?

The air conditioning box is a device that centrally processes and transports air according to design requirements. Common functions include filtration, cooling, heating, humidification and air supply. Air handling unit is a more complete technical name, and AHU is a common English abbreviation. What processing the equipment can do depends on the function segment it is equipped with. You cannot judge whether it has a built-in refrigeration system just by its name.

1. Understand equipment tasks from the air path

The working method of the air conditioning box is to let the air pass through several functional sections along a designed path, complete a processing task in each section, and finally be sent out by the fan. Starting from the air inlet, first confirm that the air comes from outdoor, return air or a mixture of the two; then check the filtration and hot and cold moisture treatment units, and finally check the fan and air supply interface. The cold water coil requires an external water system, the fan is only responsible for transporting air, and the high-efficiency filter is configured according to the system's filtration division. These three tasks cannot replace each other. Understanding this path is more important than remembering the name of the functional segment.

The basic components involved in this section can be viewed separately in Aili Industrial'sAir handling unit page,fan box page andHEPA/ULPA filter page. For the design basis for the arrangement of functional segments, please refer to the articleOn what basis should the sequence of functional sections of the air conditioning box be determined?。

2. What problems do common functional segments solve?

Each paragraph corresponds to a testable result, rather than a general 'process'. The filter section looks at the particle efficiency and resistance, the coil looks at the air inlet and outlet status and cold heat, and the fan looks at the pressure and power at the target air volume. Only by writing these results clearly can the selection be based.

The filtration section can be understood by combining the hierarchical configuration of primary, intermediate and terminal high-efficiency filters. Particle filtration products can be viewedHEPA/ULPA filter page; learn more when you need to control gaseous pollutantsChemical filter solutions. The air supply section involves matching the fan and motor, please refer to the articleWhy should we check the efficiency range when selecting air-conditioning box fans? . When Aili Industrial equips air handling units, it will check the fans, motors, filters, sheet metal and control configurations in the same set of selection data to reduce missing interfaces between functional segments.

3. The names are the same, but the abilities may be much different.

Also called an air conditioning box, the supply may only be the unit, or it may include electronic controls or some accessories. Some projects have cold water coils, some only do filtration and air supply; some have humidification sections, and some don't. When enquiring, list the cold sources, valves, air ducts, installation and debugging separately, so that you can know what the equipment and engineering parties are responsible for. The cleanliness level and room temperature and humidity still need to be achieved by the entire system and cannot be promised by one unit alone.

For the selection of structural form, please refer to the articleHow to choose between combined and integrated air conditioning boxes? , you can refer to it when the installation space is limited.What kind of space do horizontal air-conditioning boxes and vertical air-conditioning boxes require? . The clean air supply end can also be combined withCheck the FFU fan filter unit and high-efficiency air supply outlet together.

4. Explain the air tasks before selecting the model

When describing the requirements to the manufacturer, first talk about what air tasks the unit needs to complete, and then talk about the shape and size. Air volume, external static pressure, air inlet and outlet status, cold and heat source conditions and installation space are the five basic inputs for model selection. Without any of these, the device configuration is tentative. List the determined parameters and the parameters to be verified separately so that there will be a convergence path for subsequent technical confirmation.

Pressure caliber is easy to confuse, please refer to the articleWhat is the difference between static pressure, total pressure and static pressure outside the air conditioner box? ;For a complete list of information, please refer toWhat project information should be prepared before selecting an air-conditioning box? . When it comes to clean room air supply, the corresponding relationship between MAU's fresh air tasks and process exhaust air can be referred toHow does the fresh air task of the clean room MAU correspond to the process exhaust air?。

5. Aili Industrial Supporting Equipment

For equipment such as air-conditioning boxes, Aili Industrial usually checks the air task first, rather than deciding on the model first and then filling in the parameters. Aili Industrial can check the fan, motor, filter, sheet metal and control configuration together; when communicating, first explain the air tasks that the unit needs to complete, and then submit performance and interface data. The manufacturing end covers independent R&D and production of motors and fans, control systems, sheet metal, air filters and complete machine assembly. The interfaces and operating points between functional segments can be confirmed in the same package.

Product form can be viewed at Aili Industrialair handling unit page andFan box page; equipment side or clean air supply package can be combinedFFU fan filter unit、EFU equipment end fan filter unit andHEPA/ULPA filters are checked together; projects involving gaseous pollution control can be communicated separatelyChemical filter solution; when group control or multiple linkages are required, you can learn moreFFU computer group control system . Supporting method of The specific performance, applicable environment and delivery scope still need to be verified based on the corresponding configuration data and on-site working conditions. Actual results are subject to on-site leak detection and performance test results.

Submit project parameters:https://ailigy.com/contactus.html

6. Related questions and answers

Does the air conditioning box come with its own refrigeration system?
uncertain. Cooling capacity is usually provided by an external cold water system or direct evaporation. Whether the equipment has its own cold source depends on the specific functional segment and cannot be judged by the name alone.

Are air handling units and air conditioning boxes the same thing?
In most contexts, it refers to the same type of equipment. Air handling unit is the more complete technical name, and AHU is the English abbreviation. Actual capabilities still depend on configuration.

What air-conditioning box packages can Aili Industrial provide?
It can be jointly checked around fans, motors, filtration, sheet metal and control, and can be connected to products such as FFU, EFU, HEPA/ULPA filters and chemical filters. The specific configuration needs to be confirmed based on the air task and site conditions.

7. Related articles

1. How to choose between combined and integrated air conditioning boxes?

2. On what basis should the sequence of functional sections of the air conditioning box be determined?

3. What project information should be prepared before selecting an air-conditioning box?

4. What part of the air does the AHU, MAU and circulating unit handle respectively?

8. Key points for selection and acceptance inspection