SHANTHI AIRCOOLER IN COIMBATORE A **roof exhaust** is a ventilation system installed on the roof of a building to expel hot air, moisture, fumes, or pollutants from the interior of a building. It helps maintain air quality, regulate temperature, and ensure that harmful gases or vapors are removed from the air. Roof exhaust systems are commonly used in commercial, industrial, and residential buildings for efficient air management. ### Key Features: 1. **Ventilation**: The primary function is to remove stale air from the building and replace it with fresh, outdoor air, improving overall air circulation. 2. **Temperature Regulation**: Helps reduce indoor temperatures by expelling hot air from the building's upper regions, which can help lower cooling costs. 3. **Moisture Control**: Useful in areas prone to high humidity or moisture, such as kitchens, bathrooms, or industrial spaces where moisture buildup can be a concern. 4. **Pollution Control**: Effective in extracting fumes, odors, or smoke from areas like kitchens, manufacturing facilities, or chemical storage areas. 5. **Energy Efficiency**: Since roof exhausts do not rely on compressors or refrigerants, they can be an energy-efficient way of ventilating and cooling spaces. ### Types of Roof Exhaust Systems: 1. **Static Roof Vents**: These are passive vents that rely on natural airflow and pressure differences to expel air. Common in residential buildings. 2. **Mechanical Exhaust Fans**: Powered by motors, these fans actively draw hot or polluted air out of a building, often used in industrial or commercial applications. 3. **Turbine Vents**: These use wind energy to rotate a turbine, which helps to expel air from the building. Often used in warehouses or factories. 4. **Continuous Ridge Vents**: Installed along the ridge of a building, these vents allow hot air to escape continuously along the roofline. ### Benefits: - **Prevents Overheating**: Especially useful in preventing heat buildup in attics, factories, or warehouses. - **Improves Air Quality**: Reduces indoor pollutants and moisture, which can improve health conditions for building occupants. - **Reduces Energy Costs**: By maintaining proper ventilation and temperature, the