Angola has a diverse climate, with the terrain primarily consisting of lowlands along the western coast and a high plateau in the east. The coastal areas are hot and humid, 

while the inland highlands experience significant temperature swings. These conditions make ERV (energy recovery ventilation) systems particularly advantageous 

in areas requiring efficient temperature and humidity control. The following provinces are suitable for installing ERV systems:

Luanda Province: Home to the capital, the city boasts dense urban construction and a concentrated population, creating high ventilation needs. However, the province's safety risk rating is orange (high risk).

Namibe Province: The southern coast boasts abundant wind energy resources and high humidity, making ERV systems a viable option for integrating with renewable energy.

Kwanza Norte Province: Active infrastructure projects (such as new water supply systems) and clear building ventilation needs make ERV technology suitable for integration.

Inland highland provinces (such as Huambo or Huila) are located at high altitudes, with large diurnal temperature swings. ERV can effectively recover energy and maintain indoor comfort; 

however, Huila Province is considered a high-risk area, so caution is advised. During design, ventilation regulations, such as minimum fresh air volume (for example, residential buildings must 

have openings covering 5%-10% of a room's floor area) and air exchange requirements (for example, kitchens must have at least three air changes per hour), should be considered to 

ensure system compliance and efficiency.

The following are successful cases and technical references related to ERV ventilation systems in the Republic of Angola:

I. Key Industrial Project Case Studies

Lobito 10 Million-Ton Refinery Project (Luanda Province)

This Angolan national strategic project, undertaken by China National Chemical Corporation (CNCIC), utilizes an integrated solution of advanced ventilation and environmental control technologies. 

The project utilizes a variable air volume (VAV) system for precise temperature control. Combined with energy-saving design, it reduces energy consumption by 30% while also preventing condensate contamination. 

The system is equipped with static pressure sensors and fan inverters to dynamically maintain stable pipe pressure, ensuring efficient operation of large-scale industrial facilities. Project Details

II. Key Technology Application References

Variable Air Volume (VAV) System Integration

Energy Savings: 30% energy savings compared to traditional fan coil systems. Air supply volume is adjusted to match real-time loads, reducing inefficient energy consumption.

Environmental Control: The all-air system prevents ceiling condensation contamination and improves indoor air quality through fresh air conditioning.

Flexibility: The vent and hose connection design facilitates secondary renovations and adapts to changes in building space.

Static Pressure Control: Sensors monitor duct pressure in real time and control fan speed via a variable frequency drive to ensure system stability.

Negative Pressure Ventilation Technology Migration (Agriculture to Industry)

Drawing on the negative pressure control logic of small windows in livestock farms: By adjusting the exhaust fan speed and vent area, a negative pressure environment is created indoors to 

guide airflow in a targeted manner. 

This strategy is suitable for dust control in industrial workshops or heat dissipation in high-temperature areas. III. Potential for Cross-Disciplinary Technology Synergy

Medical Building Ventilation Reference: The immune microenvironment regulation mechanisms mentioned in anlotinib research (such as the AN-IMPACT study) provide theoretical insights into 

ventilation strategies for ERV systems in high-risk pathogen transmission settings (such as hospitals), such as through airflow organization design to block the spread of pollutants.

Notes

Implementation in high-risk areas (such as Huila Province) requires enhanced safety and protective design, referencing the "safety facility integration" experience of oil refinery projects.

Civil projects can optimize the adaptability of ERV systems by integrating with local regulations (e.g., minimum fresh air opening area ≥ 5-10% of the room floor area).

Note: The above cases focus on industrial scenarios. Publicly available data on ERV cases in civil buildings is limited. It is recommended to prioritize tracking the developments of 

Chinese companies' infrastructure projects in Angola.