Classification of Ventilation Systems
Ventilation systems can be classified by functions, distribution strategies or by ventilation principles.
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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
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