This module introduces the student to the underlying principles, design and operation of mechanical and natural ventilation systems in buildings. The module introduces the student to the principles and methods used in reducing and recovering the energy used in ventilation systems.
Ventilation System Fundamentals;
- The reasons for ventilation in modern buildings.
- The function and performance requirements of ventilation systems in buildings
- Units and quantities used in ventilation system design; air volume flowrate, air changes per hour, velocity, pressure.
- Using ventilation air to add & remove heat,
- Using ventilation to add and remove moisture.
Ventilation Systems and Energy;
- Factors affecting energy consumption by ventilation systems
- Heat recovery methods and technology
- Reducing energy use in ventilation systems through occupancy and CO2 based control
Ventilation Systems Design;
- The elements of a basic ventilation system and their function.
- Recommended design criteria; fresh air rates, air changes per hour for different applications
- Principles of natural ventilation in buildings, stack effect and cross ventilation.
- Principles and methods of mechanical ventilation systems
- Fire and ventilation
Ventilation system components;
- Different fan types, ductwork and fittings, materials, dampers, grilles and diffusers, filters, attenuators.
- Air distribution patterns, grilles and diffusers
- Ductwork design and sizing.
- Introduction to the principles of fan sizing
- Typical system design for commercial applications; offices, toilets, kitchens
- Designing for access & maintenance
