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10.10.2024

Decentralised ventilation systems without heat recovery: function, advantages and areas of application

 
The quality of indoor air has a significant impact on people’s well-being and health. In modern, energy-efficient buildings in particular, targeted ventilation is essential to remove pollutants and moisture and supply fresh air. Decentralised ventilation systems play an important role here, especially in times of increasing demands for climate protection and energy efficiency. In this article, we focus on decentralised ventilation systems without heat recovery, highlight their function, advantages and areas of application and discuss the associated challenges. Why and when are systems without heat recovery in particular an interesting option?
 
With a clear focus on the function and benefits of these systems, we will delve deeper into the subject matter in this article. From the basic concepts to the specific areas of application, we will shed light on everything you need to know about decentralised ventilation systems without heat recovery. Read on to learn more about the workings, benefits and potential applications of these modern ventilation systems and discover why they can be a real asset to any building.

 

Basics of decentralised ventilation technology

Definition and mode of operation Decentralised ventilation systems are systems that are usually integrated directly into the external walls of rooms. In contrast to centralised ventilation systems, which operate via an extensive duct system, decentralised ventilation systems work locally and on a room-by-room basis. Their operating principle is simple and effective. Essentially, these ventilation systems use fans to extract the stale air in a room and simultaneously supply fresh outside air. While fresh outside air is channelled into the room by a fan, the stale air is extracted via a separate outlet. The air exchange ensures continuous and healthy air circulation, effectively reducing sultriness, odours and pollutants. A key advantage of these systems is the ability to individually control when and how much air is exchanged in each room. Each unit therefore functions independently and offers the option of selectively ventilating individual rooms or areas. The decentralised design also eliminates the need for complex pipework or large ventilation centres, which makes installation and maintenance much easier. Opting for a decentralised ventilation system without heat recovery can be a strategic decision in certain scenarios where specific factors and requirements outweigh the benefits of heat recovery (HRV). In spaces that do not require significant heating or cooling (e.g. areas with mild climates or infrequently used buildings), the energy efficiency gains from heat recovery may not be large enough to justify the additional cost and complexity. Ventomaxx extract air fans are characterised by their high performance and quiet operation, ideal for use in residential and working environments. Flexible in installation and customisable, decentralised systems from Ventomaxx offer an efficient solution for different room sizes and requirements. These systems can be easily integrated into existing building structures and ensure needs-based ventilation. Typical components of a decentralised ventilation system without heat recovery from Ventomaxx are
 
1- Room-side panel:
  • With adjustable air flow
  • Quick installation plug-in / without drilling
  • Tool-free revision / filter change
  • Smallest dimension: 200x200x12 mm
2- Robau set for the reveal:
  • Modularly extendable/shortenable
  • Adjustable and adjustable flat duct termination
  • Condensate drainage integrated at the reveal end
3- System support unit with fan
  • Energy-efficient EC fan
  • Particularly quiet operation
  • Mechanical air non-return damper
  • Change from exhaust air to supply air function possible
  • Can be inspected without tools
4- Hygiene filter / SD element
  • With G3 filter as standard / F6 pollen filter optionally available
  • Filter change without tools
  • Additional protection against external noise through optional fitting of SD elements possible at any time without tools
5- Façade finish
  • Homogeneous / discreet appearance
  • Highest material quality
  • Reveal connection due to reveal end
  • Smallest dimensions
  • Available in any RAL colour on request

Advantages of decentralised ventilation systems without heat recovery

Decentralised ventilation systems without heat recovery offer a number of advantages that are relevant for both residential buildings and commercial premises. One major advantage is the simple installation of these systems. As no complex air ducting is required, decentralised ventilation systems without heat recovery can be installed quickly and cost-effectively.
 
Simple installation One of the outstanding advantages of decentralised ventilation systems without heat recovery is their simple and flexible installation. As no complex duct system is required, these systems can be retrofitted relatively easily in existing buildings. This makes them particularly attractive for renovations, where structural alterations are often costly and time-consuming. Installation is usually carried out by inserting the ventilation unit into the external wall, which minimises the need for extensive structural measures. This simplicity of installation reduces overall costs and enables rapid implementation.
 
Cost efficiency Decentralised ventilation systems without heat recovery are cheaper to purchase than systems with heat recovery. The lower material and installation costs make them an attractive option for many building owners and renovators. This cost efficiency can be decisive, especially for projects with a limited budget. In addition to the purchase costs, maintenance costs are often lower. As these systems are less complex, the maintenance requirements are manageable. This can represent a significant saving for owners.
 
Lower maintenance costs Another advantage is the lower maintenance requirements. Decentralised ventilation systems without heat recovery generally require less regular maintenance compared to complex systems with heat recovery. Maintenance work is often limited to replacing filters and cleaning the fans, which is usually simple and inexpensive.
 
Accessibility and user-friendliness The individual controllability of decentralised ventilation systems makes them extremely user-friendly. Each room can be treated separately, which means that users can customise the ventilation to their specific needs. This is particularly beneficial in residential buildings, where different rooms have different air quality requirements. The flexibility in control allows ventilation to be activated or deactivated as required, saving energy and increasing comfort.

 

Function and performance

In some buildings, it may be more important for health reasons to ensure a constant flow of fresh air than to save heat. This applies in particular to rooms where controlling air pollution or humidity is more important than temperature control. For example: bathrooms, kitchens or other areas where moisture and odours need to be removed quickly regardless of the temperature.
 
Air exchange rates The air exchange rate is a decisive criterion for the effectiveness of a ventilation system. It describes how often all the air in a room is exchanged per hour. An air exchange rate of 0.5 to 1.5 is often recommended for living spaces, depending on the use and size of the room. In decentralised ventilation systems without heat recovery, the air exchange is often controlled manually or by preset timers. This means that the frequency of air exchange can be adjusted to meet the specific requirements of the room. A well-chosen volume flow is crucial to ensure the necessary supply of fresh air and prevent the accumulation of pollutants.
 
Influence of outdoor conditions Decentralised ventilation systems without heat recovery are dependent on external weather conditions. At very low temperatures, air exchange can cause unwanted heat loss, while particularly high temperatures can impair comfort. It is important to take climatic conditions into account when planning and selecting the ventilation system in order to maximise efficiency and ensure comfort. If necessary, the use of ventilation systems with heat recovery is then recommended.
 
Noise development A frequently discussed topic is the noise generated by decentralised ventilation systems. While modern fans are generally designed to operate quietly, noise can still be generated depending on where they are placed and how they are used. Choosing a high-quality fan with sound-insulated housings can help to minimise noise development. In addition, the arrangement of the ventilation openings should be designed in such a way that disturbing noises are avoided.

Areas of application

Decentralised solutions without heat recovery are used in a wide range of applications. Especially in buildings where a centralised ventilation system is not practical or not desired. A frequent area of application is residential construction, especially in apartment blocks or detached houses, where individual and demand-orientated ventilation of the rooms is required.
 
Residential construction They are ideal for detached houses, flats and renovations where a flexible and cost-effective solution for improving air quality is required. In living spaces that are frequently used, these systems can help to maintain a healthy indoor climate by supplying fresh air and extracting stale air.
 
Trade and industry Decentralised ventilation systems without heat recovery are also used in commercial and industrial applications. They are particularly suitable for smaller offices, sales rooms or warehouses where constant ventilation is required to create a pleasant working environment. In such environments, these systems help to increase the productivity and well-being of employees.
 
Special applications In addition, decentralised ventilation systems without heat recovery can also be used in specialised applications to promote the well-being of occupants. Here, decentralised systems can be installed individually to ensure fresh and healthy indoor air. In schools and educational establishments, for example, they enable continuous ventilation of classrooms, which promotes the concentration and performance of pupils.

Conclusion: Decentralised ventilation systems without heat recovery

Decentralised ventilation systems without heat recovery offer an effective and uncomplicated solution for ventilating rooms without the additional expense of heat recovery. Thanks to their simple design and installation, they are particularly suitable for individual rooms or smaller buildings where no centralised ventilation system is required. The function of these ventilation systems is based on the principle of air exchange, in which fresh air is drawn in from outside and stale air is discharged to the outside. This continuous air exchange ensures optimum indoor air quality and helps to reduce humidity and unwanted odours. The advantages of decentralised ventilation systems without heat recovery lie in their simplicity, cost efficiency and flexibility. They can be customised to the needs of different rooms and offer an effective solution for air circulation in buildings. Thanks to their uncomplicated installation and maintenance, these ventilation systems are a practical and efficient option for building owners, architects and building services planners. They can be used in residential buildings, offices, schools and other public buildings where effective ventilation is required. Overall, decentralised ventilation systems without heat recovery are a sensible addition to other ventilation systems and offer a simple but effective solution for ensuring healthy and pleasant indoor air quality.
 
Decentralised ventilation systems without heat recovery are ideal for: Bathrooms, kitchens or other areas where moisture and odours need to be removed quickly regardless of the temperature… Garages, storage rooms, holiday homes or outbuildings with minimal heating requirements.

 

More exciting articles

If you would like to find out more about decentralised ventilation systems with heat recovery, we recommend that you take a look at the information provided by Ventomaxx. This innovative technology not only ensures improved indoor air quality, but also helps to reduce energy costs.
Decentralised ventilation systems without heat recovery offer an efficient and flexible solution for targeted air circulation in various areas of application. Their simple operation and versatile benefits make them an attractive option for building owners and project planners. The function and performance of these systems help to improve the air quality in buildings without having to resort to costly heat recovery. Whether in the commercial, public or private sector, decentralised ventilation systems without heat recovery are an innovative solution for ensuring a pleasant indoor climate and promoting energy efficiency. Despite some challenges and limitations, these systems demonstrate their strengths in numerous areas of application and offer a sustainable alternative to conventional ventilation systems.

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