What makes Cumulus unique?

  • Read more

    Chilled beam with stratifying ventilation principle

    A layered ventilation principle entails stratification of the air temperature, which gives a greater difference between supply air temperature and extract air temperature.

    This means that a higher heating effect can be carried away from the living area, with the same amount of air as for a mixing ventilation system.

  • Read more

    High capacity in small packaging

  • Read more

    Maximizes the power in different operation cases

  • Read more

    Flexible construction and project adaptation

  • Read more

    Cumulus gives good effect even when heated

A selection of references

What is the advantage of a one-way blowing chilled beam?

A one-way blowing cooling beam creates a stratifying ventilation principle. A multi-way blowing beam spreads the air out evenly, creating a mixing principle of ventilation. Cumulus supplies the air where it is needed the most; in the living area. It provides the opportunity to reduce the cooling capacity by 20-30% while maintaining the thermal indoor climate (also verified by the University of Gävle).

This means that the temperature in the residence zone will be about 1-2 degrees lower than in a traditional system.

Most common question: How does Cumulus work when there is no access to walls, for example in open landscapes?

Cumulus is normally installed in connection to a wall, but it can also be installed in an open landscape. In open landscapes Cumulus, should be placed at corridor lanes or along the facade wall.

When placing along the façade, several advantages arise. In the case of sunlight (summer time), the window will be cooled down, which reduces problems with hot surfaces at windows. Even cold down draught from the the window will be reduced winter time, as the air is warmer than the window.

How does Cumulus work?

Cumulus is designed to create a thin vertical stream of air along the wall with the help of the Coanda effect, ensuring that the air effectively reaches the living area. By collaborating with the thermal forces from the heat sources, an energy efficient indoor climate is created, where fresh air is effectively supplied to the people in the room, while heated polluted air can rise in the room and be removed by the exhaust air system. This not only ensures that the best possible indoor climate is created, but also requires less resources compared to a traditional mixing ventilation system.

Stratification of the air temperature in the room, gives a greater difference between the supply air temperature and exhaust air temperature, which means that a higher heat output can be carried away with the same air volume as for a mixing ventilation system. The result is simply a better thermal indoor climate.

Placement of Cumulus

Cumulus is placed in ceilings and suspended ceilings and can advantageously be installed in the rear edge / corridor wall, partition wall or facade wall. Due to its small size, it is easy to handle and install. Cumulus is a one-way blowing baffle and mainly uses the wall to bring the air down to the living area, therefore the baffle works best when installed with a nearby wall and can then create a stratified indoor climate with high air exchange efficiency.

Cumulus can also be used in large-room environments and open landscapes, and with a little imagination, Cumulus can also act as a two-way blowing baffle, by placing two baffles next to each other. When not placed adjacent to a wall, Cumulus works like a traditional mixing chilled beam, but has an extremely high capacity compared to similar chilled beams of the same size class.

In general, there are no restrictions, but Cumulus can be used wherever water-based cooling is traditionally used.

What happens if I place a desk or a piece of art on the wall where the air is going to travel?

The efficiency of the air will not be affected, but larger objects can affect the immediate zones. Important not to forget is that this is a problem even for traditional mixing systems.

A art piece does not significantly affect the spread of the air, however, we recommend that larger objects are placed a few centimeters from the wall in order for the chilled beam to have maximum function. The worst thing that can happen is that we get the same efficiency as in a mixing system.

Dimensions & connections

Product nameHeightLength (L)WidthConnection waterConnection vent K-factor
Cumulus 12002001192293121002,2
Cumulus X 12002001192293121004,3
Cumlus 1800 2001792293121003,5
Cumulus X 18002001792293121006,5

Capacity- & adjustment diagram Cumulus

Capacity- & adjustment diagram Cumulus X (extra air)