Room and zone applications
Outstanding indoor air quality is the prerequisite for our daily well-being and health.
The following parameters are the focus of the zone. They should be similar or identical within a zone:
- Air temperature
- Air humidity
- Air quality
Comfort, health and productivity
Room and zone applications
The following documentation is dedicated to the room and zone application and aims to explain it in a simple and holistic way and thus to communicate application knowledge. The solutions for the introduction of heat, cold and air into the zone are explained, and the advantages and disadvantages of different design strategies are discussed. A special focus is on the use and arrangement of field devices.
Table of contents
- Intro
- General principles
→ Comfort and health
→ Air types as well as heating and cooling circuit
- Water applications – basics
→ Distribution systems for hot and cold water
→ Heat and cold emission for water
- Water applications – components
→ Control valves – pressure-independent vs. pressure-dependent
→ Various types of heat emission elements
- Ventilation applications – basics
→ Ventilation types
→ Air supply and room air flows
- Ventilation applications – components
- Combined applications and other systems
→ Fan coils/induction units/VRF system
- Building automation
→ Levels in building automation
→ Zone and room solutions in building automation
- Zone control
→ Overview of field devices and functionality
→ Example schematics of zone control
Download Links
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Application book – Room and zone applications
(pdf -
20.35 MB)
Pressure-dependent vs. pressure-independent
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Pressure-dependent: One consumer has closed its valve, and the water now flows as surplus to the other consumers. |
Pressure-independent: One consumer has closed its valve, and the other consumers receive only the flow rate that they require. |
Cooling with underfloor heating
In underfloor cooling, the cooling is achieved mainly through radiation from the bottom up, while the importance of convection diminishes. The cooling performance is limited, as the water temperatures should not drop below 19°C in order to maintain comfort and avoid moisture damage. A different cooling system is needed when more cooling is required.
The principle of displacement ventilation
Displacement ventilation requires heat sources to move the air gently into the room. Cold supply air is needed to generate thermals. Insufficient airflow leads to mixed air. Ideal for larger-sized rooms where chilled air remains at lower levels. Extract air zone above the occupancy area improves air quality. The position of the displacement ventilation diffusers should support natural thermals.
Example from Chapter 9: control and regulation of zones
