Analysis of Chad's Regional Suitable Areas for ERV Ventilation Systems

I. Climate Suitability

Northern Desert and Semi-Desert Regions

This region has a dry and hot climate with large diurnal temperature swings. ERV systems can reduce fresh air load and air conditioning energy consumption through sensible heat recovery, 

while also preventing excessive drying of the interior air.

Southern Savanna Region

During the rainy season, humidity is high. ERV's full heat exchange function balances indoor and outdoor temperatures and humidity, preventing the introduction of excessive moisture. 

During the dry season, it recovers moisture from exhaust air to maintain indoor humidity.

II. Building Type Requirements

Enclosed Buildings (e.g., office buildings, residential buildings): ERVs are suitable for scenarios requiring continuous ventilation but energy conservation, such as the modern buildings in the capital, N'Djamena.

Industrial Facilities: Factories in areas surrounding Lake Chad (e.g., oil production areas) can use ERVs to treat high-temperature and high-humidity outdoor air, improving worker comfort.

III. Special Applications

Healthcare Facilities: ERVs control cross-infection while maintaining efficient air exchange, making them suitable for hospitals and laboratories.

New Energy Vehicles: Local electric or hybrid vehicles can be integrated with ERV systems, utilizing residual battery heat to pre-condition the interior air.

IV. Precautions

Maintenance Cycle: The ERV (Exhaust Regenerator) requires replacement of its paper core every 3-5 years. Dust and sand in desert areas may shorten maintenance intervals.

Energy Efficiency Advantage: Compared to HRVs, ERVs perform better in Chad's year-round climate fluctuations, particularly in humidity management.