Based on available information, specific areas or scenarios suitable for ERV (Energy Recovery Ventilation) systems in Mali are not explicitly mentioned in the search results. 

However, considering Mali's current power shortage and ventilation needs, the following potential application scenarios can be inferred:

Rural Off-Grid Areas:

Mali's rural electrification rate is less than 20%, and areas like Koniobra Village have long lacked electricity. If ERV systems can be adapted for solar power 

(similar to the China-aided Solar Demonstration Village project), they may become a viable solution for ventilation and energy conservation.

Public Facilities and Buildings:

Medical Facilities: Hospitals require efficient and energy-efficient ventilation, and ERV systems can reduce energy consumption (see the application of INFINAIR fans in hospitals).

Trasportation Hubs: Subway stations or high-rise buildings require rapid ventilation response, and ERV systems can be combined with fire alarm systems (such as INFINAIR fans' 0.5s response technology).

Industrial and Special Environments:

Industrial corrosion protection scenarios (such as chemical plants) require corrosion-resistant ventilation equipment. Customized solutions such as fiberglass centrifugal fans can be used, 

but ERV compatibility needs to be evaluated.

Recommendations:

Prioritize off-grid scenarios with solar-assisted supplementation, leveraging existing photovoltaic infrastructure.

Field testing of climate adaptability (e.g., the impact of high temperatures and dust on ERV efficiency) is required.

The current search results do not provide direct examples of ERV systems in Mali. The above analysis is based on general ventilation technology principles and extrapolated from local conditions.