Newsletter 30.12.2008


Stravent to deliver air curtains for the new head-office of the Tapiola Concern.

Stravent Oy has signed a contract with Kaariputki Oy for delivery of air curtains and 60 silent fan-coils for the new head-office of the Tapiola Concern. The system minimizes draft problems and saves energy. The delivery includes 14 air curtains and the value of the contract exceeds the amount of 150.000 €. The delivery will take place in summer 2009.

The Stravent biddle air curtain effectively reduces the amount of heated air escaping from the building. The constantly downwards flowing air mass will – up to the extent of 90% – be integrated in the natural air circulation of the room, creating an agreeable draft-free zone close to the entrance.

The Stravent biddle air curtain system includes a patented rectifier that eliminates the turbulence caused by the fan. The dense air stream from the device is directed downwards, and due to the optimized directing of the jets, a minimal amount of air is needed to cover the entrance down to the floor level: this provides good cover for the entrance. The use of traditional air curtains require a high level air supply that makes the air curtain spread out increasing the energy consumption. The Stravent biddle does not have these drawbacks.

The Stravent biddle air curtain device also works with a standard fan speed. The system includes a smart valve construction enabling the air jet to be adjusted. Due to this solution even an increased effect does not change the air velocity. even an increased effect does not change the air velocity. As the valve As the valve opens up, the outlet enlarges, and the broadening air stream provides more heating without increased air velocity, thus remaining almost imperceptible.

The patented Stravent biddle technique creates an effective, draft-free and silent air curtain using a considerably reduced amount of air compared to any traditional air curtain. The heated out-door air is always directed agreeably at the occupied zone. Thanks to the effective laminar flow the building will benefit from up to 90% of the heating energy, the operation costs will be reduced, and the satisfaction of the workers and the customers ensured.

Stravent Oy
Timo Karkulahti
Managing Director


Ecoclime products support our customers' environmental strategy with their lower life-cycle costs, longevity and their maintenance-free and durable polymer structure. They improve quality, reduce waste and promote sustainable development.


The site on the edge of the old church park will become Helsinki’s largest congress hotel. The office building will be renovated into a 350-room hotel and is scheduled for completion in summer 2022. 


According to Jussi Ainamo, Design Director, the long-term cooperation between Sweco Talotekniikka Oy and Stravent Oy is based on a good product, the correctness of dimensions and professionalism. 


The second phase of the West Metro is under construction from Matinkylä in Espoo to Kivenlahti. In all, a seven kilometre long line and five new stations are under construction: Finnoo, Kaitaa, Soukka, Espoonlahti and Kivenlahti.

Stravent Oy
Piispantilankuja 4
02240 Espoo
(09) 4241 3630
Satanolla Oy