More than just hot air: heat insulation with Airwalls

According to the Federal Environment Agency, more than half of the energy generated in Germany is used for heating. The larger the room, the more expensive heating is - and the more difficult it is to maintain the desired temperature. Better insulation lowers heating costs and reduces the ecological footprint. But to consistently keep heat indoors, doors and gates must also be protected against heat loss, especially cold draughts. Airwalls are suitable for this, keeping the cold air where it should stay: outside.

Most cold insulation ends at the hall door

Logistics companies and businesses with large halls know the problem: when products have to be loaded in winter, heat escapes from the interior rooms. Doors must be kept open so that employees can work without delay. Many companies therefore attach plastic curtains to the doors to keep the draught at bay even when the doors are open.

The problem is also well known in the retail sector: At many entrances to department stores or grocery shops, air curtains are found that blow warm air into the entrance area to hold back cold air. Alternatively, revolving doors are often used to reduce the loss of heated air. High-speed doors can ice up, airlocks are only helpful if a door remains closed. These solutions are not efficient.

None of these measures solve these problems. Plastic curtains are unsuitable because they do not adequately stop draughts and at the same time make it difficult to work with loading aids such as forklift trucks or autonomous logistics vehicles. Revolving doors push expensively heated air outside and frustrate customers. Air curtains are imprecise and consume a lot of energy themselves to heat the outflowing air. So how can the problem be solved? With airwalls.

Reaching the goal with speed: Airwalls keep cold air out

Airwalls are the ideal solution for reliably keeping out cold air and reducing operating costs at the same time. Layers of air can be separated Due to the high air speed, little air volume is required, so that energy consumption is lower than with air curtains. With heating coils, airwalls themselves can generate warm air in an energy-efficient way, maintaining an even temperature indoors. They are also effective insulation, when vehicles are parked in open loading bays or many employees need to pass through for an extended period of time.

Read our casebooks to find out how versatile our technologies are.

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AT A GLANCE

What our airwalls can do:

reduce energy consumption
keep heat in the places where it is needed
seal access points without making them impassable for employees
increase well-being in the workplace
can themselves become part of the heating system with its fan coils

We have high sustainability goals and are pleased to have found in LWT GmbH a supplier who takes the United Nations' "Agenda for Sustainable Development" as seriously as we do.

Martin Schäfer,
Site management Grammetal plant
Döllken Profiles GmbH

Due to the clean separation between warm and cold air, the colleagues near the air wall have one of the coolest workplaces in summer and one of the warmest in winter!

Harald Schillinger, Senior Manager Maintenance and Sales Development,
OBI Germany

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FAQ

What is an airwall and how does it work?

Airwalls are systems that accelerate air to high speeds with the help of fans and compress it into a thin jet via a patented nozzle (pressure linear module). The generated air jet prevents layers of air from mixing. Our units can be mounted on the side of gates or above doors. The air jet then separates the air over the entire height. This keeps cold air outside in winter, for example, and does not cool the air indoors. Airwalls are modular and therefore have a lot of planning freedom. They can therefore also be retrofitted without any problems.

What is the difference to air curtains?

How time-consuming is the installation of Airwalls?

When does it start paying off to invest in an airwall?