Can the length of the horizontal air conditioning box be reduced when there is insufficient plane space?

Whether the length of the horizontal air-conditioning box can be compressed should be evaluated section by section in terms of function, air flow development, humidification absorption, water blocking and maintenance needs. It cannot be shortened according to a uniform proportion. A shorter device profile may bring drag, air unevenness or maintenance difficulties, and only rechecked structural adjustments are suitable for manufacturing.

Divide the total length into spaces with tasks

In addition to the coil and filter body, transition, mixing, flow equalization, humidification and component removal also take up space. These lengths do not seem to directly produce cooling capacity, but they may be conditions for normal function. Mark out the tasks that must be retained first, and then evaluate changing the interface direction, local structure, or overall layout instead of directly deleting the blank segments.

The requirements for air treatment, air distribution and maintenance must be met; those that can be evaluated and adjusted include the direction of the air outlet, structural connection and functional combination; those that need to be recalculated are resistance, fan points, air status and maintenance paths. The three types of spaces correspond to different processing methods and cannot be shortened only in proportion. On what basis should the sequence of functional sections of the air conditioning box be determined? Please refer toOn what basis should the sequence of functional sections of the air conditioning box be determined?。

The mixing section and flow equalizing section cannot be compressed at will.

The mixing section needs to be long enough to allow the fresh air and return air to fully mix, otherwise local low temperature or high humidity areas may occur at the coil inlet. When the flow equalization section is insufficient, the head wind speed of the coil and filter will be unevenly distributed, and the heat exchange and filtration effects will be affected. Compressing these transition sections may shorten the appearance of the unit, but the air treatment effect will deviate from the design.

How long is the mixing section required? Please refer toHow long is the air mixing distance required in the mixing section of the air conditioning box? . For the influence of wind speed facing the coil, please refer toWhat impact does the coil head-on wind speed have on heat exchange and water entrainment in the air conditioning box?。

Humidification absorption distance and water blocking section should be retained

After steam humidification, sufficient distance is required for the steam to be absorbed by the air flow. Insufficient distance may cause water droplets to enter downstream components. The water retaining section behind the wet coil also needs space to prevent water droplets from being carried to the filter or fan. Compressing these sections may cause moisture in the downstream, increase in filter resistance, or cause water to be carried by the fan.

How to combine the slope of the water pan of the air-conditioning box with the layout of the drain outlet, please refer toHow to combine the slope of the water pan of the air-conditioning box with the layout of the drain outlet? . What needs to be considered when arranging the filter section before and after the fan? Please refer toWhat needs to be considered when arranging the filter section before and after the fan?。

After compression, the resistance and fan operating point will change

The shortening of the unit length may change the internal air path, and elbows, diameter changes, and cross-sectional changes may increase local resistance. The original fan operating point may deviate from the high efficiency area, resulting in a decrease in air volume or an increase in power. The compression scheme should recheck these resistance changes and confirm whether the fan has sufficient margin.

What functional segments should be included in the internal resistance of the air conditioning box? Please refer toWhat functional segments should be included in the internal resistance of the air conditioning box? . How to establish the fan pressure budget, please refer toHow is the total pressure of the air conditioning box fan determined by the internal resistance and external demand? . Why should the fan efficiency range be checked? Please refer toWhy should we check the efficiency range when selecting air-conditioning box fans?。

Maintenance space and component extraction cannot be sacrificed

Space is needed for filter extraction, coil cleaning, fan removal and sensor maintenance. After the length is compressed, the component extraction path may be blocked and the access door may not be fully open. Even if the equipment can be placed in the computer room, subsequent maintenance may become difficult.

When the horizontal air-conditioning box is arranged against the wall, which side should be left for inspection? Please refer toWhen a horizontal air conditioning box is placed against a wall, which side should be left for inspection? . Horizontal and vertical types require different space, please refer toWhat kind of space do horizontal air conditioning boxes and vertical air conditioning boxes require?。

How to make decisions when you really don’t have enough space

The designer and equipment side can jointly evaluate the disassembly of the unit, adjust the installation location or change the system plan, and list the new interfaces and construction impacts. Any compression scheme should have updated validation graphs and performance conditions. Only modifying the length in the outline drawing without reviewing the internal layout can easily postpone on-site problems to the installation and operation stages.

What unchangeable conditions must be locked first for non-standard customization? Please refer toWhat unchangeable conditions should be determined first for non-standard customization of air-conditioning boxes? . How to choose between combined and integral types, please refer toHow to choose between combined and integrated air conditioning boxes?。

Aili industrial supporting equipment

Aili Industrial can evaluate non-standard structures based on the actual site and provide unchangeable space dimensions and interface locations, which helps determine which adjustments are feasible. Aili's industrial manufacturing end covers the independent research and development and production of motors and fans, control systems, sheet metal, air filters and complete machine assembly. The length of the box, the configuration of functional sections and the working point of the fan can be matched in the same package; non-standard boxes can be adjusted according to on-site space and transportation conditions.

Product form can be viewedAir handling unit andFan box page; clean air supply package can be combinedFFU fan filter unit andEFU equipment end fan filter unit verification; terminal particle filtration can be combinedHEPA/ULPA filter confirmation; when it comes to gaseous pollution control, you can communicate separatelyChemical filter solutions. The specific length adjustment, performance 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 installation inspection and performance test results.

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

Related questions and answers

Can the length of the horizontal air conditioning box be shortened proportionally?
Not recommended. Each functional segment undertakes different tasks and should be evaluated by segment and cannot be compressed uniformly in proportion.

What is the reason for the decrease in air volume after compressing the length?
Changes in the internal air path may increase local resistance and shift the fan operating point. The resistance and fan margin need to be rechecked.

Can Aili Industrial help evaluate compression solutions?
Feasible adjustments can be evaluated based on site space, functional section requirements and wind turbine conditions. The specific plan needs to be confirmed based on project conditions.

Related articles

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

2. How long is the air mixing distance required in the mixing section of the air conditioning box?

3. When a horizontal air-conditioning box is arranged against a wall, which side should be left for inspection?

4. What unchangeable conditions should be determined first for non-standard customization of air-conditioning boxes?

Key points for selection and acceptance inspection