Semi-integrated nozzle duct in the ceiling

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At the Gripen school in Nyköping the desire was to hold the suspended ceiling up while the nozzle duct would not reach too far down.

Repus has delivered a nozzle duct where the suspended ceiling is half the height of the diffuser. The nozzles are equipped with air directors that spread the air obliquely downwards and create an even air distribution.

We can also supply nozzle ducts with an L-profile mounted directly on the diffuser for a simpler installation in the ceiling.

The mother of Nozzle diffusers celebrates 40 years!

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It has been 40 years since the Repus nozzle saw the light of day. It was a beautiful day when the HVAC consultant at K-konsult was driving his car with a sunroof. The consultant reflected on the air only passing by the opening in the ceiling, and up went his hand and the air was immediately brought down in the passenger compartment.

Alas, the idea was born of using the dynamic pressure for supplying air. You will get the same result with punched holes in a duct. The air will pass the holes first and not until a lid is mounted on the end and a static pressure is built-up the air will be pushed though the holes. If you instead create a nozzle that diverts the air you can get a more even air distribution as well as lower pressure drop compared to a pipe without nozzles.

The technique is particularly suitable for variable air flow as much of the static pressure vanishes at the lower flow while the dynamic pressure stays in the duct.

Today, Repus offers a wide range of nozzle ducts: round, rectangular, quarter round and half round which all are tailored according to the customer's specific needs.

More recently, many have seen the advantage of integrating the rectangular nozzle ducts in the ceiling instead of installing several ceiling diffusers. From a nozzle duct for a dining room you can get 4-800 l/s from a duct 5-15 m long. You will get an easy installation with few silencers and dampers.

With this technique, you can save plenty of fan power and achieved low SFP-values.
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Original drawing of the nozzle
 
REPUS Ventilation


REPUS Ventilation Incorporated is a company that was established in Sweden 30 years ago. We develop and market our own, patented products, mainly displacement diffusers and nozzle ducts. We focus on high quality products and advanced know-how within our areas of expertise. We strive to deliver excellent ventilation solutions, at all times adjusted to specific contexts and requirements. We also strive to not only meet but exceed our customers’ expectations.

 

 

Easy get technical data for Repus displacement diffusers and nozzle ducts with the user-friendly Repus Calculator.

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News



25-1-2018

At the Gripen school in Nyköping the desire was to hold the suspended ceiling up while the nozzle duct would not reach too far down.

Repus has delivered a nozzle duct where the suspended ceiling is half the height of the diffuser. The nozzles are equipped with air directors that spread the air obliquely downwards and create an even air distribution.

We can also supply nozzle ducts with an L-profile mounted directly on the diffuser for a simpler installation in the ceiling.


17-05-2017

The mother of Nozzle diffusers celebrates 40 years!

It has been 40 years since the Repus nozzle saw the light of day. It was a beautiful day when the HVAC consultant on K-konsult was driving his car with a sunroof. The consultant reflected on the air only passing by the opening in the ceiling, and up went his hand and the air was immediately brought down in the passenger compartment.


15-08-2016

Nina Pentti is back!

Our experienced indoor sales person Nina Pentti is back at Repus. Nina will work with sales, orders, distribution and invoicing. Repus, our customers and our suppliers all welcome her back!


01-07-2016

New distributor in the UK

Repus has new distributor! We are happy to announce that Coleman Air distribution is our new distributor in the UK.


21-12-2015

New standard colour

Repus has now changed to RAL 9003 as standard colour on its products. Still we can produce in a special colour according to your needs.

We want to wish everyone a Merry Christmas and a Happy New Year




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