Displacement: A technology that we’ve been developing and installing for many high-profile food and drinks brands for well over 25 years.

We show you how, when correctly managed, the natural buoyance of air in your factory is your key to unlocking energy savings whilst at the same time protecting your processes, products and people.

There’s a bit more to it than that and a 2-minute read will enlighten you on the technology and actual energy savings.

How does Displacement work?

The principle: Warm air rises due to buoyancy effects.

By supplying low velocity cool air at relatively low level and allowing it to gradually mix with the warmer air as it rises, displacement ventilation creates a stratified temperature profile within the space.

The result: Cooler air near the occupied zone and Warmer air near the ceiling/roof.

This can result in improved thermal comfort, better indoor air quality, and impressive energy savings compared to traditional mixing ventilation systems.

Displacement air handling systems often consist of low/mid-level supply diffusers or textile socks and high-level return or exhaust grilles near the ceiling/roof.

The Benefits to You

Recent project brief for a leading bakery product manufacturer

A medium care packing area with a total room volume of 4185m³and a ceiling height of 5.5m is to be maintained at 22°C all year round. The calculated heat load is 100kW.

The following data illustrates the differences between a mixing and displacement design and the energy saving benefits for you, the client.

The above example is taken from a recent design with a very modest roof height. With displacement, as the height of extraction increases so does the temperature gradient, resulting in reduced air volumes and increased energy savings.

For example, if the roof height was 7m instead of 5.5m, the energy saving would be ~£13,200 pa.

The “control point” i.e the height at which the design temperature is required, is not affected by the extract height.

What is Air Handling?

At the centre of environmental control in your production area is an Air Handling Unit. A correctly operating unit is critical to the energy efficiency and cost management of your processes.  It’s vital for maintaining a comfortable and healthy indoor environment. Planned management of all aspects of the AHU will deliver significant benefits to your bottom line and operational efficiency. Penmann is here to share our considerable experience of this technology.

At Penmann, we pride ourselves on our depth of knowledge in Air Handling and welcome any questions you may have regarding the above topic or other areas within your Air Handling plant.

If you feel you would like to learn more, then please tap into our knowledge and expertise by arranging a brief online meeting with one of our team.

Or email info@penmann.co.uk

Introducing insights from Penmann. Facts, advice, helpful information plus hints and tips; designed to give answers to your most common questions, offer solutions to your challenges and deliver energy saving benefits. We hope you find insights from Penmann useful. Please share with colleagues.

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