เคสระบายอากาศสำหรับโรงงานสิ่งทอ POPULA ในกรุงธากา
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POPULA fan textile factory ventilation planning in Dhaka must address high ambient temperature, seasonal humidity, machinery heat, airborne lint and long production shifts. This representative engineering case explains how a garment and weaving facility could evaluate a wall-mounted axial exhaust system without presenting unverified site results as measured performance.
The project is anonymized and the design values are preliminary engineering assumptions. Final equipment selection must be checked against the approved factory layout, actual heat load, air-change target, make-up air path, electrical supply and local safety requirements.
Textile Factory Ventilation Challenge
The representative workshop contains rows of textile machinery in a long production hall. Heat from motors, lighting and process equipment accumulates beneath the roof, while humid outdoor air limits the cooling effect available from ventilation alone. Lint can also collect on guards, motors and blades if inspection access is poor.
The initial review identified three priorities: remove warm air from the production zone, create a clear path for replacement air and avoid short-circuiting between supply openings and exhaust fans. The engineering team also needed to keep high-velocity air away from sensitive production points and provide safe access for cleaning.
POPULA industrial fan solutions are selected from the required airflow and system conditions rather than fan diameter alone. Useful inputs include workshop dimensions, occupancy, machine heat, indoor and outdoor temperature, humidity, existing openings, operating hours and the location of nearby buildings.
Preliminary Airflow Planning
For a large open workshop, wall-mounted axial fans can provide high-volume air exchange where system resistance is low. However, the required quantity cannot be determined from floor area alone. The calculation should consider building volume, internal heat generation, desired air-change rate and the effective free area available for replacement air.
Before equipment release, the proposed fan duty should be checked for airflow, pressure, motor power, noise and installation losses. Louvers, guards, shutters and weather protection all add resistance and must be included in the review.
POPULA Fan Selection and Installation Concept
The preliminary concept used blue cylindrical industrial axial fans with protected impellers, mounted in reinforced wall openings along the warmer side of the workshop. The fans were arranged to support a consistent cross-flow path rather than concentrating all exhaust capacity in one corner.
Each proposed installation included a structural frame, protective grille, weather consideration and adequate clearance around the inlet and discharge. Replacement air was planned through openings on the opposite side of the hall so that fresh air could travel across occupied production zones before reaching the exhaust line.
Key selection and installation checks included:
- confirmed airflow at the expected installation resistance;
- motor voltage, frequency, phase and protection level;
- safe blade guard spacing and secure mounting;
- access for cleaning lint from the grille and impeller;
- rain protection without excessive airflow restriction;
- vibration isolation and fastener inspection;
- separation between exhaust points and make-up air openings;
- coordination with fire, electrical and production-safety requirements.
Why Make-Up Air Matters
Exhaust fans cannot deliver useful airflow if the building does not admit enough replacement air. Excessive negative pressure can reduce fan output, make doors difficult to operate and draw untreated air through uncontrolled gaps. In a textile workshop, poorly placed openings can also disturb processes or move lint into unwanted areas.
The proposed layout therefore treated exhaust and make-up air as one system. Large, low-resistance inlet areas were distributed to reduce drafts and improve airflow coverage. Where natural openings were insufficient, powered supply air or additional louvers would need to be evaluated.
Maintenance Planning for Lint and Humidity
Textile lint can accumulate quickly on fan guards and blades, reducing airflow and disturbing balance. The maintenance plan should define inspection frequency based on actual production conditions rather than a fixed generic interval. Motors, cables, guards, mounting frames and protective coatings should also be checked for moisture, contamination and looseness.
Commissioning Checks Before Production Handover
A credible ventilation case must separate expected performance from verified performance. After installation, the project team should measure airflow or velocity at agreed locations, confirm motor current and rotation direction, inspect vibration and verify that replacement air reaches the intended work zones.
Recommended commissioning records include:
- fan model, serial information and installed location;
- voltage, current, frequency and rotation direction;
- airflow or velocity measurements using an accepted method;
- indoor temperature and humidity at representative points;
- noise and vibration observations;
- door operation and building pressure behavior;
- photos of guards, frames, shutters and electrical connections;
- maintenance access and cleaning instructions.
If measured airflow is below the design requirement, the team should first inspect blocked inlets, restrictive louvers, incorrect rotation, low voltage, unexpected pressure resistance and recirculation around the discharge. Adding more fans before identifying the cause can increase power consumption without correcting the airflow path.
Procurement Lessons from the Dhaka Design Case
This representative Dhaka case shows why textile factory ventilation should begin with the building and process, not a fan catalogue page. A suitable แฟน POPULA configuration depends on the required duty, available make-up air, installation resistance, lint conditions and maintenance plan.
For a textile or garment factory enquiry, buyers can send POPULA the workshop drawing, dimensions, machine layout, operating schedule, temperature and humidity information, existing openings, electrical supply and photographs of the proposed fan locations. The engineering team can then review axial, centrifugal or mixed-flow options and identify the missing data needed for final selection.
The practical objective is a balanced and maintainable airflow system: warm air leaves through controlled exhaust points, replacement air crosses the occupied production area, and every installed fan remains accessible for inspection. This approach gives contractors and factory managers a stronger basis for procurement, installation and commissioning.
This article is an anonymized representative engineering design case. It does not claim measured energy savings, temperature reduction or completed-site performance.