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Di norma, i ventilatori sono dimensionati e installati in base alle esigenze di ventilazione massime, ma non sempre è necessaria la massima capacità di ventilazione, l’installazione di un inverter infatti permette di controllare la velocità del motore del ventilatore per soddisfare le reali esigenze di ventilazione. Riducendo la velocità del motore si riduce la quantità di energia necessaria per alimentarlo (fino a 8 volte), il che a sua volta riduce i costi e di conseguenza le emissioni di co2.

Quando sono collegati ad un sistema di sensori, gli inverter possono rivelarsi ancora più efficaci controllando le prestazioni del motore in base a un numero qualsiasi di impostazioni predefinite come la temperatura, il flusso, l’umidità, ecc., eliminando la necessità di una regolazione manuale.

Come funziona un inverter?

La manipolazione della frequenza con un inverter consiste nel convertire la tensione di rete in entrata da AC a DC utilizzando un circuito di raddrizzamento ad onda intera. C’è poi un secondo stadio di collegamento CC che appiana la forma d’onda e assicura che l’inverter rimanga carico durante il suo utilizzo. Lo stadio finale comporta la creazione di un’uscita di tensione pulsata a onda quadra per simulare una forma d’onda AC come mostrato di seguito:

Gli inverter possono giocare un ruolo chiave nei progetti di risparmio energetico, ma i benefici non si fermano qui. Ridurre la quantità di tempo in cui il motore funziona a piena velocità non solo farà risparmiare energia, ma ridurrà anche lo sforzo sul motore stesso e su qualsiasi componente collegato. Questo significa minori esigenze di manutenzione e, ancora una volta, una riduzione dei costi. L’installazione di un inverter su un sistema più vecchio e soggetto all’usura può persino contribuire a prolungare la sua vita utile.

 

Scopri l’intera linea di convertitori di frequenza Invertek Drives che è possibile accoppiare ad un nuovo impianto di ventilazione o a quello già esistente nella tua azienda, clicca qui.

SCARICA L’APP per calcolare il tuo risparmio ORA!

 

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Regulating temperature and air quality in large commercial and industrial spaces can be difficult. Proper ventilation and airflow are essential to help maintain consistent temperatures throughout the space and keep operating costs down.

Fans are commonly used to help cool and ventilate large spaces, but not all fans are up to the job or work effectively. It is therefore important to choose a fan that has been designed for this type of application.

What makes an industrial fan different?

There are two types of fans available on the market today, general purpose fans and industrial fans. At first glance they may seem identical, but there are substantial differences:

Durability: Industrial fans are built to last under heavy and continuous use. General purpose fans, on the other hand, are designed for lighter and/or intermittent use in homes or offices. The difference is in the details. An industrial fan is characterised by stronger materials and bearings, stronger welds and construction, and a more powerful motor, allowing it to last longer and maintain its performance over time.

Size/Capacity: Industrial fans are usually larger, and therefore capable of generating more pressure, with airflows of up to 100,000 m³/h.

Why are larger industrial fans more suitable for large spaces?

Better air flow: It takes up to 34 small conventional fans to do the job of one large industrial fan. The column of air produced is able to move more efficiently around obstacles, distributing the air throughout the space.

Lower energy costs: For the same volume of air, an industrial fan requires much less electricity than a number of small fans, leading to considerable savings.

Quieter working environment: Small fans need a high operating speed and are therefore noisier. A suitably sized industrial fan, on the other hand, can move large volumes of air effectively even at lower speeds, while remaining quiet. The result is greater comfort for employees and improved productivity.

An industrial fan can make a huge difference to your facility's energy bills, safety and productivity. Investing in a quality industrial fan is a value-based decision that will reward you for years to come.

Contact us, one of our consultants will be ready to help you find the most effective solution for your company, click here.

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In the relevant markets, the term 'industrial fan' does not have a clear definition and in this article we want to explain what industrial fans are, specifically axial and centrifugal models and their differences.

An axial fan is a fan in which the extracted air is forced to move parallel to the shaft around which the blades rotate. Centrifugal fans, on the other hand, extract air perpendicular to the fan inlet, and spin it towards the outlet due to deflection and centrifugal force. The impeller rotates, allowing air to enter the fan near the shaft and move perpendicularly from the shaft towards the opening in the fan casing.

Axial fans replace the centrifugal fan in certain fields of application from a functional point of view, operating at higher specific speeds with smaller diameters.

An axial fan, with the same flow rate and pressure, has the following differences to a centrifugal fan:

  • has a smaller impeller diameter
  • has a higher dynamic pressure
  • has a significantly higher operating speed
  • the peripheral speed is greater
  • has lower efficiency and therefore higher energy consumption
  • is much louder
  • is significantly smaller and lighter, and less expensive

The most significant data in this comparison are weight, operating speed and noise. The operating speed comparison shows that the same flow and pressure characteristics can be obtained from axial fans at higher operating and peripheral speeds than centrifugal fans. Since there is a limit to the stresses in the rotating bodies, and hence to their peripheral speeds, we can safely say that pressures of a certain magnitude are more easily obtained with centrifugal fans than with axial fans.

Axial fans are generally noisier and it is often the case that an axial fan requires the use of silencers to reduce noise, whereas a centrifugal fan would not.

But these negative aspects are countered by a lower weight, less space occupied, a lower cost and the parallelism of the two suction and discharge nozzles, which make it easy to fit into the system, where the axial fan becomes nothing more than a piece of pipe, while the centrifugal fan requires a more complex solution.

Discover the entire line of Meridiana vacuum cleaners and choose the model that best suits your company's needs, click here.

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We are pleased to launch the new web platform for a more incisive online communication of our company. The web site is strongly oriented towards the informative richness of our products and the dissemination and development of case studies.  A participatory and informative dialogue that relates the complexity of certain issues and the ability to develop customised solutions.

 

 

A close dialogue between our company and the customer, to further strengthen that relationship based on profound transparency and which conveys a message that identifies the desire for a pathway of innovative technologyincreasingly aimed at meeting the needs of a changing market. continuous evolution.

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