POPULA HL3-2A Mixed Flow Fan for Stairwell Pressurization in Bangkok, Thailand

In a commercial building project in Bangkok, Thailand, the fire protection team needed a more stable air supply solution for stairwell pressurization during emergency smoke control operation. The project faced limited installation space, long duct routing, and the need for reliable airflow support to help keep evacuation routes clear when smoke spread risk increased. To support this requirement, POPULA recommended the POPULA HL3-2A Mixed Flow Fan as a practical ventilation solution for the building’s stairwell pressurization system.

POPULA HL3-2A Mixed Flow Fan for Stairwell Pressurization Airflow Support

In fire protection ventilation systems, stairwell pressurization is important because it helps reduce smoke entry into escape routes during emergency conditions. In this project, the building required a fan solution that could provide stronger pressure support than a standard axial fan while still maintaining a compact structure for easier installation in a limited mechanical area. The airflow path also included duct sections and vertical delivery requirements, so stable air movement and practical system matching were both necessary for the project.

Why HL3-2A Was Selected

The POPULA HL3-2A Mixed Flow Fan was selected because it combines some of the airflow advantages of an axial fan with the pressure characteristics of a centrifugal fan. This model is suitable for low- and medium-pressure ventilation conditions, and its product design offers compact structure, light weight, high efficiency, relatively low noise, and convenient installation. For a building stairwell pressurization application, these features make HL3-2A a practical choice when the project requires reliable airflow support, controlled duct delivery, and better use of limited installation space.

POPULA Fan Layout for Project Ventilation Support

For this project, the HL3-2A mixed flow fan was arranged as part of the stairwell air supply system connected to the building’s fire ventilation ductwork. The fan layout was planned to deliver air into the protected stairwell zone so that positive pressure support could help reduce smoke leakage from adjacent fire-affected areas. Based on the building shaft condition and airflow requirement, the system could be configured with suitable fan size, duct connection, and airflow control components, allowing the stairwell ventilation support to respond more effectively during smoke control operation.

Practical Value for Stairwell Pressurization Ventilation

By applying the POPULA HL3-2A Mixed Flow Fan in the stairwell pressurization system, the project gained a more practical ventilation solution for emergency airflow support, especially where installation space and airflow resistance both had to be considered. The compact structure helped simplify equipment arrangement, while the mixed flow design provided more suitable pressure performance for stairwell supply conditions. For commercial building fire protection projects that need dependable ventilation support, POPULA continues to provide practical fan solutions for smoke control, stairwell pressurization, and building safety ventilation applications.