Classification of Ventilation Systems
It is common to classify ventilation systems by functions, distribution strategies, ventilation principles - or by combinations of them all.
Classifying by Function
It is common to classify a ventilation system by function:
- Ventilation - Supply and evacuating of air with the main purpose to keep the atmospheric climate according the requirements
- Climate - Supply and evacuating air with main purpose to keep the temperature and the atmospheric climate according requirements
- Heating or cooling - Recycling system with the main purpose to supply the building with necessary heat or cooling
- Combined system - The functions above more or less combined in one system
Classifying by Distribution
A ventilation system can also be classified by distribution:
- Centralized - A central plant supplies and extract air to and from the whole building
- Decentralized - Each room/area of the building has it's own ventilation unit
- Combined - Both centralized and decentralized systems used
Classifying by Ventilation Principle
A ventilation system can also be classified by the ventilation principle and air flow:
- Displacement air flow through the room - CAV (Constant Air Volume) or VAV (Variable air volume
- Mixed air flow through the room - CAV (Constant Air Volume) or VAV (Variable air volume.
Examples of Ventilation Systems Classifications
- Single-Zone Constant-Volume System
- Single-Zone Constant-Volume System with Reheating
- Multi-zone System
- Induction Unit System
- Variable-Air-Volume System
- Dual-Duct System
Related Topics
• Ventilation
Systems for ventilation and air handling - air change rates, ducts and pressure drops, charts and diagrams and more.
Related Documents
Comfort Environments - Selecting Ventilation System
A quick selection guide of ventilation system in comfort environments.
Design of Ventilation Systems
Design procedure for ventilation systems - air flow rates, heat and cooling loads, air shifts according occupants, air supply principles.
Duct Systems - Pressure Classifications
Duct systems are commonly divided into three pressure classifications.
Velocity Classification of Ventilation Ducts
Recommended air velocities in ventilation ducts
Ventilation Systems - Acoustic Calculation Procedure
Acoustic noise calculation procedure HVAC systems.