Based on available information, Chad, a Central African country, faces ventilation needs in industrial and specialized environments, particularly in the following scenarios, 

suitable for ERVs (Energy Recovery Ventilators) or similar high-efficiency ventilation equipment:

High-Temperature Industrial Workshops

Chad's hot climate often creates challenges for factory workshops, including high temperatures and odors. ERV fans achieve air convection through powerful exhaust. 

Their large-diameter blades can cover an area of 200 square meters. Their rust-resistant housing and low-noise motor make them suitable for industrial environments 

such as metalworking and textiles. Some case studies have shown that installing such equipment has reduced electricity costs by 30% and reduced heatstroke rates among employees by 80%.

Aquaculture and Agricultural Facilities

Negative pressure fans are particularly effective in greenhouses, quickly removing odors and introducing fresh air. They offer flexible installation and stable operation. 

For large-scale farms in Chad, these devices can improve air quality and reduce energy consumption.

Mining and Tunneling

Axial flow fans for mining require high air pressure, explosion protection, and corrosion resistance, particularly in gas-prone mines. ERV fans with similar features 

(such as IP55 protection and low-noise design) can be used in mining or tunnel construction applications in Chad.

Power-Restricted Areas

Some axial fans support dual voltages of 220V/380V, making them suitable for areas with unstable power infrastructure. The pure copper motor design extends equipment life and reduces maintenance.

Notes:

Select a model that matches local power conditions.

Automatic temperature control features, such as automatic acceleration at 38°C, are preferred in high-temperature environments.

If special certifications (such as explosion-proof) are required, confirm that the equipment complies with international standards.

(Note: The current search results do not directly mention local cases in Chad. Further consultation with local suppliers or on-site verification of environmental compatibility is recommended.)