As an arid sub-Saharan country, Niger's climate and industrial demands place special demands on ventilation system selection. The following is an analysis of 

specific scenarios suitable for installing ERV (Energy Recovery Ventilation) systems:

I. Climate Adaptability

High Humidity Control Requirements

During Niger's rainy season (June-September), humidity can reach over 70% in some areas. ERV systems can balance the difference between indoor and outdoor humidity and prevent condensation.

When buildings in cities like the capital, Niamey, use shading systems, ERVs can complement natural ventilation to reduce the accumulation of hot and humid air.

Industrial Areas with Large Diurnal Temperature Differences

Uranium mines and oil extraction bases on the edge of the Sahara Desert experience diurnal temperature fluctuations of up to 25°C. ERVs can recover heat from exhaust air and 

maintain constant operating temperatures for equipment.

II. Specific Location Recommendations

Medical and Public Buildings

Facility such as the jointly constructed Sino-Nigerian hospital requires strict temperature and humidity control. ERVs offer superior humidity exchange capabilities compared to traditional 

HRVs and align with their passive design concept of shading and ventilation.

Industrial Plants

In photovoltaic/wind hybrid energy facilities, ERVs can reduce humidity in diesel generator compartments, minimizing the risk of equipment corrosion (case studies have shown a 76% reduction in CO₂ emissions).

Data Centers

In hot, dry environments, ERVs can maintain an ideal humidity range of 40%-60% in server rooms, preventing electrostatic damage.

III. Technical and Economic Benefits

Cost-Effectiveness: Although the initial investment in an ERV is 15%-20% higher than an HRV, its energy-saving features can pay for themselves within 3-5 years in Niger, where diesel power generation costs are high.

Maintenance Advantages: The ERV's dust-resistant design is suitable for dusty environments, reducing the frequency of filter replacements (extending maintenance intervals by 30% compared to HRVs).

Note: Oil and gas producing regions such as the Niger Delta require specific operating conditions. High-sulfur environments may require a customized, corrosion-resistant ERV system.