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The entrance hall at 1 Bishopsgate building in London features a new Zen air curtain from British air curtain specialist JS Air Curtains following the building’s recent refurbishment.

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Integrating seamlessly into the environment, the air curtain is helping to keep the large reception warm while minimising heat-loss from the entrance. The main heat loss from 1 Bishopsgate’s entrance hall was through the glass lobby fronting onto the street. The high ceiling called for air curtains that could easily be suspended above the lobby door and could deliver the heating output required to warm the generously proportioned reception area. Due to the prominent location, it was also specified that the air curtains must complement the modern architectural style of the building’s interior.

PIP Electrics worked closely with JS Air Curtains to select the unit best suited to the building’s requirements and found the 1.5m model suitable that provides a heating output of up to 22.5kW. The flexibility of installation with the Zen was a key benefit as the installers were able to hang it with drop rods to the required height. Its smart, minimalist design was another factor. The anodized aluminium fascia was chosen to complement the entrance.

Zen air curtains are offered in half metre lengths from 1 to 2.5m, with electric or water heaters, and as an air only model. The discharge vents have airfoil shaped vanes to direct the airflow creating a tighter seal across a doorway. Low noise, double inlet centrifugal fans with external rotor motors provide up to 6,475m3/h airflow making it suitable for use on doorways up to 3.5m.

The 1 Bishopsgate office refurbishment was the first in the UK to achieve a Gold SKA rating and helped the Grade 2 listed building in the city of London to achieve in excess of 30% savings in energy and CO2.