The installation of an ERV (Energy Recovery Ventilation) system in São Tomé and Príncipe (São Tomé and Príncipe) requires consideration of local climate and architectural characteristics. 

The following are key considerations and applicable scenarios:

1. Climate Adaptability

São Tomé and Príncipe has a tropical maritime climate characterized by high temperatures and high humidity year-round. Therefore, ERV systems require a moisture- and corrosion-resistant design. 

Stainless steel or galvanized ducts and brackets are recommended.

The system should include efficient dehumidification to cope with the high humidity during the rainy season (October to May).

2. Recommended Building Types

Hotels and Resorts: São Tomé and Príncipe has a developed tourism industry, and coastal resort hotels require ERV systems to balance indoor and outdoor temperature and humidity for enhanced comfort.

Medical Facilities: Hospitals on São Tomé Island, for example, must ensure that their ventilation systems meet hygiene standards to prevent cross-infection.

Commercial Buildings: Shopping malls and office buildings in the capital, São Tomé, are suitable for ERV systems to reduce air conditioning energy consumption. 3. Installation Technical Key Points

Duct Fixing: Fiberglass ducts exceeding 20 meters in length require additional fixing brackets and expansion joints.

Hanger Spacing: The spacing between main and branch duct hangers should be ≥ 200mm. Anti-sway brackets must be installed at elbows and valves.

Flange Sealing: The flange bolt hole spacing should be adjusted according to the supply air pressure (≤ 200mm for low pressure, ≤ 100mm for medium pressure). The gasket thickness should be ≥ 5mm.

4. Maintenance Recommendations

Regularly check the seals of duct joints to prevent corrosion caused by high humidity.

Clean filters before the rainy season to prevent mold growth that affects air quality.

For specific project examples or local supplier information, search for "São Tomé and Príncipe ERV System Suppliers" or "Ventilation Project Case Studies in Tropical Regions."