The Venturi effect and its application
with Mostiglass®

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Explication flux Venturi

What is the Venturi effect?

The Venturi effect is a physical phenomenon which is based on the principle of conservation of flow.

When a fluid, such as air, moves through a conduit and reaches an area where the conduit narrows, the quantity of fluid entering this area must be equal to that leaving it, according to the principle of continuity.

In the case of a reduced section of the conduit, the fluid is forced to pass through a more restricted space.

So that the quantity of fluid passing remains the same despite the reduction in the area, its speed must increase.
The narrow zone forces the fluid to accelerate to maintain the same flow rate, which results in a drop in pressure according to Bernoulli's principle.

Mostiglass® and temperature reduction

Mostiglass is a buffer designed to regulate the temperature between the interior and exterior of a building.
Its main objective is to create a pressure difference which makes it possible to effectively manage the climatic conditions inside the room.
Here are some key points concerning the operation of Mostiglass®:

  • In Summer:
    Mostiglass® limits the entry of hot air inside the building and lowers the temperature of the incoming air when it exceeds 25° C.
    The effectiveness of lowering the temperature increases with the increase of the outside temperature, reaching up to 9°C difference between the inside and the exterior.
  • In Winter:
    Mostiglass® acts as a thermal buffer, allowing gentle ventilation without drafts.
    It reduces heat loss by maintaining thermal regulation.
  • Air passage:
    Mostiglass® allows air to pass through while avoiding unwanted drafts.
    Aeration is soft, ensuring beneficial air exchange without compromising the thermal comfort of the interior.

Mostiglass® offers a versatile solution for regulating indoor temperature every season.
In Summer, it limits the entry of hot air while cooling the incoming air, while in Winter it maintains gentle ventilation while minimizing heat loss.
This contributes to a more comfortable indoor environment while being energy efficient.

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Optimize the action of Mostiglass®

The installation of Mostiglass® requires several points to be respected to ensure effective thermal regulation and optimal comfort.

Installation before the arrival of hot air

It is recommended to install Mostiglass® before hot air settles into the room.
This helps prevent excessive heat build-up inside.

Equip at least 2 openings

To promote air intake, it is recommended to equip at least two openings with Mostiglass®.
This facilitates air circulation and optimizes the efficiency of the system.

Sun protection

It is important to protect Mostiglass® from direct exposure to sunlight.
This can be achieved by using sun protection devices such as awnings, blinds or curtains.

Room sealing

It is crucial to ensure the airtightness of the room by preventing outside air from entering through other openings.
This ensures that Mostiglass® operates efficiently by controlling the flow of incoming air.

Activation of air circulation

Air circulation is activated after a few minutes, depending on the configuration of the installation and the room.
This allows the thermal regulation process to be initiated.

Perception of ventilation

The feeling of ventilation becomes perceptible more than 1 meter from the opening equipped with Mostiglass®.
This indicates that the system is working effectively to ensure beneficial air exchange.

Natural air circulation

The air finds its way naturally, and the phenomenon occurs autonomously.
By opening the doors between the rooms a little, we can facilitate the circulation of air.

Continuous or regular ventilation

It is recommended to ventilate with Mostiglass® continuously or as often as possible to maintain a cool and comfortable indoor atmosphere.

Mostiglass® products

Discover our installation systems adapted to every type of opening

Magnetic Mostiglass® glazing

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Magnetic Mostiglass® glazing

Sliding Mostiglass® frame

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Sliding Mostiglass® frame

Mostiglass® for roof and skylight

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Mostiglass® for roof and skylight

Surface-mounted Mostiglass® glazing

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Surface-mounted Mostiglass® glazing

Mostiglass® frame with knobs

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Mostiglass® frame with knobs

Mostiglass® sash frame

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Mostiglass® sash frame

Double sliding Mostiglass® frame

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Double sliding Mostiglass® frame

Mostiglass® door

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Mostiglass® door

Mostiglass® double door

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Mostiglass® double door